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Yale Scientific<br />

THE NATION’S OLDEST COLLEGE SCIENCE PUBLICATION • ESTABLISHED IN 1894<br />

DECEMBER 2023<br />

VOL. 96 NO. 4 • $6.99<br />

THE<br />

FAILURE<br />

ISSUE


TABLE OF<br />

VOL. 96 ISSUE NO. 4<br />

SPECIAL ISSUE<br />

12<br />

Rediscovering Cosmic Origins<br />

David Gaetano<br />

For centuries, the mysteries of our solar system’s origins have intrigued scientists and thinkers alike.<br />

In a 1941 edition of the Yale Scientific Magazine, a Yale professor cast doubt on the major theories<br />

of the time, without raising any of his own. New technology over the past decade, however, has<br />

made these unanswerable questions now well-understood.<br />

14 Is Alcohol Use Disorder In Our Genes?<br />

Matthew Blair & Lea Papa<br />

Over the last century, alcohol use disorder has been a unique case study of the ‘nature versus<br />

nurture’ debate. Scientists have long argued about whether the condition is primarily caused by<br />

the environment, or if it is inherited and can be attributed to our genes. Today, our understanding<br />

reveals a more complex answer.<br />

16 The Ticking Clock to Fight Ticks<br />

Cindy Mei<br />

Lyme disease, a tick-borne illness that can have dangerous health effects if not detected early,<br />

has been on the rise since 2000. Despite promising studies highlighting the potential of a Lyme<br />

disease vaccine appearing over three decades ago, there is still no vaccine available today. Recently,<br />

researchers have discovered a strategy to develop an “anti-tick” mRNA vaccine that may be able to<br />

protect against not only Lyme disease, but also other tick-borne illnesses.<br />

19 Revisiting The "Brilliant Future" of PFAS<br />

Evelyn Jiang<br />

Since the 1950s, PFAS—dubbed ‘forever chemicals’—seemed to have a brilliant future ahead, with<br />

uses in various products like waterproof clothing, non-stick pans, and firefighting foam. However,<br />

with more evidence suggesting that PFAS is toxic to our environment and bodies, PFAS serves as a<br />

stark reminder of what can happen when scientific innovation goes unchecked.<br />

22 Gene Therapy For Parkinson's Disease<br />

Madeleine Popofsky & Risha Chakraborty<br />

In 1992, <strong>YSM</strong> reported on a novel gene therapy for Parkinson’s disease, which has since failed. However,<br />

decades later, two new approaches show promise in treating this neurodegenerative disease at its<br />

genetic source. For patients, this could mean a better option than today’s most common treatment,<br />

Levodopa, which loses effectiveness over time and with more advanced forms of the disease.<br />

2 Yale Scientific Magazine December 2023 www.yalescientific.org


CONTENTS<br />

More articles online at www.yalescientific.org & https://medium.com/the-scope-yale-scientific-magazines-online-blog<br />

4<br />

6<br />

8<br />

9<br />

25<br />

34<br />

LETTER<br />

TIMELINE<br />

Q&A<br />

PROFILES<br />

FEATURES<br />

SPECIALS<br />

Special <strong>Issue</strong>: Joint Letter from the Editors<br />

• Alex Dong, Madison Houck, and Sophia Li<br />

A Brief History of Scientific Failures • Keya Bajaj<br />

Why Is "Disruptive" Science Dwindling, While "Hype" Language<br />

Is On The Rise? • Sunny Vuong<br />

Ammonium Chloride: Fertilizer Ingredient, Pickling Agent…<br />

Or The Sixth Taste? • Ethan Powell<br />

Brian Nosek • Nathan Wu<br />

Marc Abrahams • Mia Gawith<br />

Stuart Firestein • Kavya Gupta<br />

Faster Than Lightspeed • Genevieve Kim<br />

Seawater Squabbles • Brandon Ngo<br />

This Metal-Free Reaction Contains... Metal • Lawrence Zhao<br />

From “Not Good Enough” to Nobel Prize Winner • Annli Zhu & Michael Sarullo<br />

Life on Venus! Actually, No! Actually, Maybe? • William Archacki<br />

Room Temperature Superconductors? Not So Fast…<br />

• Yossi Moff & Yamato Takabe<br />

<strong>YSM</strong> Archives vs. Today: The Rise of "Thinking Machines" • Ian Gill<br />

Science in the Spotlight: Hype and Failure • Ximena Leyva Peralta<br />

Science in the Spotlight: Serendipitous Science • Jamie Seu<br />

Counterpoint: Reckoning With The Ghosts of <strong>YSM</strong>’s Past • Samantha Liu<br />

Perimeter: A New Precipitation • Molly Hill<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 3


Letter from the Editors<br />

THE FAILURE ISSUE<br />

Preface: The last magazine of each calendar year is, as per Yale<br />

Scientific Magazine tradition, a themed special issue. This letter,<br />

co-written by your outgoing 2023 managing team—Alex Dong,<br />

Madison Houck, and Sophia Li—examines why we have chosen<br />

to focus on failure as our central theme. We will also explain how<br />

each section of this special issue has been modified to cover a<br />

different aspect of our theme, while highlighting several notable<br />

articles exclusive to this magazine. We hope you enjoy reading<br />

Vol. 96 No. 4: The Failure <strong>Issue</strong>!<br />

<br />

As anyone from an undergraduate student to a tenured<br />

professor could tell you, failure is a natural, necessary part<br />

of science. The scientific method is predicated on a constant<br />

cycle of failures and successes that drive experimental work<br />

forward. Arguably, a failed experiment can be more generative<br />

than a successful one, yielding new questions and research<br />

directions. And yet, most major scientific journals exclusively<br />

publish success stories. These stories are then picked up by<br />

journalists and communicated to the public, while a long<br />

history of failed experiments remains obscured from view. It’s<br />

an open secret—we all know success doesn’t come easy, but we<br />

don’t seem to want to hear about a series of mistakes without<br />

groundbreaking innovation to show for it.<br />

When the 2023 Nobel Prize in Physiology or Medicine was<br />

announced in October, science journalists began reporting on<br />

the incredible stories of Katalin Karikó and Drew Weissman.<br />

Although their contributions to the mRNA COVID-19 vaccine<br />

have undoubtedly shaped our world today, their work was<br />

consistently underestimated and disregarded for years until<br />

the right set of circumstances recently led to a breakthrough<br />

(pg. 30). Inspired by their story and its subsequent public<br />

reception, our final issue of the year seeks to examine the<br />

theme of failure broadly across science and science journalism.<br />

How do scientists regard failure? How have initial failures led<br />

to great progress? And how have overhyped innovations fallen<br />

by the wayside?<br />

In this spirit, we also asked: How has our own magazine<br />

failed in the past? The Yale Scientific Magazine (<strong>YSM</strong>), the<br />

nation’s oldest collegiate science publication, has existed<br />

in some form or another for 130 years. It’s easy to evaluate<br />

the failures of others critically and even to perceive them as<br />

avenues for growth, but it’s much more difficult to examine<br />

oneself. This year, as we moved our historical archives from<br />

our old offices in Welch Hall and 305 Crown Street to the<br />

Benjamin Franklin College Library, we had the opportunity to<br />

delve into the evolution of <strong>YSM</strong> over time.<br />

Our magazine’s past has included missteps ranging from<br />

the comical—like the “Troubled Years” where <strong>YSM</strong> rebranded<br />

to focus on student affairs rather than science from 1918 to<br />

1926—to the incredibly serious, like the magazine’s promotion<br />

of eugenics and other pseudoscientific ideas in the 1900s.<br />

Ultimately, this is another reason why our managing team felt<br />

that “The Failure <strong>Issue</strong>” was so important to create. As our<br />

magazine continues to grow and change, it is our responsibility<br />

as young journalists to understand our organization’s past and<br />

to learn from it.<br />

<br />

In this special issue, we have modified our usual sections to<br />

reflect this endeavor of examining and reflecting upon failure.<br />

Our “Shorts” section, which has replaced “News,” begins with<br />

a timeline of notable scientific failures throughout the ages—<br />

whether that be Aristotle’s disproven theory of spontaneous<br />

generation in the 4th century BC or the fall of the nowinfamous<br />

biotech company Theranos (pg. 6). This section then<br />

presents short profiles of three unconventional scientists: Brian<br />

Nosek, who studies the reproducibility of new discoveries and<br />

how to make the research process more transparent (pg. 9);<br />

Marc Abrahams, who founded a magazine and prize ceremony<br />

to honor unusual, imaginative, and humorous science (pg.<br />

10); and Stuart Firestein, who investigates why failure is the<br />

driving factor behind scientific success (pg. 11).<br />

For our Full-Lengths section, we went back to <strong>YSM</strong>’s archives<br />

and selected decades-old articles to examine how our scientific<br />

understanding of various subjects has evolved—or been<br />

subverted—over time. For instance, a <strong>YSM</strong> article written in 1941<br />

discredited one hypothesis about the origins of the solar system<br />

that has, in fact, developed into the theory widely accepted by<br />

physicists today (pg. 12). In another article, we reflected on a<br />

Lyme disease vaccine covered by <strong>YSM</strong> in 1993 with a seemingly<br />

promising future that was never actualized (pg. 16).<br />

Our Features section focuses on more contemporary scientific<br />

discourse and the trial-and-error nature of experimentation.<br />

For example, a 130-year-old assumption about seawater ion<br />

distribution was recently debunked (pg. 26), bringing forth a<br />

need to reevaluate past research that relied on it. Over the past<br />

three years, there have also been intense back-and-forths in<br />

science, such as an ongoing debate about life on Venus (pg.<br />

30) and the multiple attempts—and failures—to create roomtemperature<br />

superconductors (pg. 32).<br />

These ideas, decades ago, might have sounded like the stuff<br />

of science fiction. In our Special Sections, we have included<br />

a reprint of a 1951 <strong>YSM</strong> article interrogating the impact<br />

that intelligent robots may have on society through this lens<br />

of science fiction (pg. 34). We then wrote a side-by-side<br />

comparison of those ideas with the very real developments of<br />

artificial intelligence and machine learning today (pg. 35).


So, what have we learned? Some inventions and innovations were hailed<br />

as the next big breakthrough, only to fall short of expectations. Other<br />

discoveries were not given a second glance but turned out to have worldchanging<br />

impacts. Either way, failure in science is ubiquitous. With the<br />

benefit of hindsight, it can be easy to discount the striving and the seemingly<br />

innumerous number of times we’ve barked up the wrong tree. Yet we must<br />

keep in mind that no experiment will be the “final one” or the “capstone” of a<br />

field—the work will never be finished. There will always be something more<br />

to question or explore.<br />

<br />

With that, it is now time for us to pass over the reins to the next masthead.<br />

It has truly been an honor to serve you all as your 2023 <strong>YSM</strong> Managing<br />

Team this year. We would like to thank our incredible contributors across all<br />

five branches—Editorial, Production, Business, Web, and Synapse—without<br />

whom none of this would have been possible, as well as our 35 masthead<br />

members for their leadership, initiative, and tenacity.<br />

We would also like to express our deepest gratitude to the Yale Science<br />

and Engineering Association and its president, Milton Young, for their<br />

instrumental guidance and support this year. Finally, thank you, our readers,<br />

for your continued engagement with <strong>YSM</strong>—you are the reason we do what<br />

we do. Here’s to science, to striving, and to failure.<br />

Sincerely,<br />

MASTHEAD<br />

December 2023 VOL. 96 NO. 4<br />

EDITORIAL BOARD<br />

Editor-in-Chief<br />

Managing Editors<br />

News Editor<br />

Features Editor<br />

Special Sections Editor<br />

Articles Editor<br />

Online Editors<br />

Copy Editors<br />

Scope Editors<br />

PRODUCTION & DESIGN<br />

Production Manager<br />

Layout Editors<br />

Art Editor<br />

Cover Artist<br />

Photography Editor<br />

BUSINESS<br />

Co-Publishers<br />

Operations Manager<br />

Subscriptions Manager<br />

Outreach Manager<br />

Alex Dong<br />

Madison Houck<br />

Sophia Li<br />

Sophia Burick<br />

Anavi Uppal<br />

Hannah Han<br />

Kayla Yup<br />

Krishna Dasari<br />

Mia Gawith<br />

William Archacki<br />

Matthew Blair<br />

Jamie Seu<br />

Samantha Liu<br />

Anya Razmi<br />

Malia Kuo<br />

Madeleine Popofsky<br />

Sydney Scott<br />

Kara Tao<br />

Catherine Kwon<br />

Jenny Wong<br />

Lucas Loman<br />

Dinara Bolat<br />

Tori Sodeinde<br />

Georgio Maroun<br />

Yusuf Rasheed<br />

Alex Dong, Editor-in-Chief<br />

Madison Houck, Managing Editor<br />

About the Art<br />

Sophia Li, Managing Editor<br />

Rather than trying to visually<br />

represent all the science from the<br />

articles in this issue, I instead went<br />

with the overarching idea that<br />

scientists are always looking to reach<br />

new heights in their discoveries<br />

and innovations. Oftentimes, these<br />

attempts can fail, as symbolized by<br />

the falling ladders. However, the<br />

journey towards discovery persists,<br />

which I represented through the<br />

leaping figures.<br />

Catherine Kwon, Cover Artist<br />

OUTREACH<br />

Synapse Presidents<br />

Synapse Vice President<br />

Synapse Outreach Coordinators<br />

Synapse Events Coordinator<br />

WEB<br />

Web Managers<br />

Head of Social Media<br />

Social Media Coordinators<br />

STAFF<br />

Sanya Abbasey<br />

Luna Aguilar<br />

Ricardo Ahumada<br />

William Archacki<br />

Dinesh Bojja<br />

Risha Chakraborty<br />

Kelly Chen<br />

Leah Dayan<br />

Steven Dong<br />

Chris Esneault<br />

Erin Foley<br />

Mia Gawith<br />

Simona Hausleitner<br />

Tamasen Hayward<br />

Katherine He<br />

Miriam Huerta<br />

Sofia Jacobson<br />

Jenna Kim<br />

Catherine Kwon<br />

Charlotte Leakey<br />

Ximena Levya Peralta<br />

Yurou Liu<br />

Samantha Liu<br />

Helena Lyng-Olsen<br />

Kaley Mafong<br />

Georgio Maroun<br />

Cindy Mei<br />

Lee Ngatia Muita<br />

Lea Papa<br />

Hiren Parekh<br />

Himani Pattisam<br />

Emily Poag<br />

Madeleine Popofsky<br />

Tony Potchernikov<br />

Zara Ranglin<br />

Yusuf Rasheed<br />

Alex Roseman<br />

Ilora Roy<br />

Ignacio Ruiz-Sanchez<br />

Noora Said<br />

Hannah Barsouk<br />

Sofia Jacobson<br />

Jessica Le<br />

Kaley Mafong<br />

Lawrence Zhao<br />

Anjali Dhanekula<br />

Abigail Jolteus<br />

Emily Shang<br />

Elizabeth Watson<br />

Keya Bajaj<br />

Eunsoo Hyun<br />

Jamie Seu<br />

Kiera Suh<br />

Yamato Takabe<br />

Joey Tan<br />

Kara Tao<br />

Connie Tian<br />

Van Anh Tran<br />

Sheel Trivedi<br />

Robin Tsai<br />

Sherry Wang<br />

Elise Wilkins<br />

Aiden Wright<br />

Elizabeth Wu<br />

Nathan Wu<br />

Johnny Yue<br />

Iffat Zarif<br />

Hanwen Zhang<br />

Lawrence Zhao<br />

Celina Zhao<br />

Matthew Zoerb<br />

The Yale Scientific Magazine (<strong>YSM</strong>) is published four times a year by Yale<br />

Scientific Publications, Inc. Third class postage paid in New Haven, CT<br />

06520. Non-profit postage permit number 01106 paid for May 19, 1927<br />

under the act of August 1912. ISN:0091-287. We reserve the right to edit<br />

any submissions, solicited or unsolicited, for publication. This magazine is<br />

published by Yale College students, and Yale University is not responsible<br />

for its contents. Perspectives expressed by authors do not necessarily reflect<br />

the opinions of <strong>YSM</strong>. We retain the right to reprint contributions, both text<br />

and graphics, in future issues as well as a non-exclusive right to reproduce<br />

these in electronic form. The <strong>YSM</strong> welcomes comments and feedback. Letters<br />

to the editor should be under two hundred words and should include the<br />

author’s name and contact information. We reserve the right to edit letters<br />

before publication. Please send questions and comments to yalescientific@<br />

yale.edu. Special thanks to the Yale Science and Engineering Association.


SPECIAL<br />

Timeline<br />

Timeline of Scientific<br />

ailures<br />

The scientific method—observation, analysis, and conclusion—optimistically presumes a cycle of discovery without errors. But on the lab<br />

bench, in the chemical hood, and under the lens of the most well-resolved microscope, any successful research project is also fraught with failure.<br />

This timeline aims to chronicle a brief history of scientific failures—to acknowledge the mistakes and missteps built into the process of scientific<br />

discovery, and thereby to better appreciate what it takes to discover the science that makes it into the pages of a textbook and scrawled onto a<br />

classroom blackboard. The pursuit of scientific knowledge is continuous and unrelenting—a test of patience and tenacity. We hope to demystify<br />

the process of scientific discovery by shedding light on the struggles it entails both for the novice and the seasoned researcher alike.<br />

4th Century BC<br />

Spontaneous Generation<br />

Aristotle formalized the theory of spontaneous generation, which<br />

stated that living organisms could be generated spontaneously out<br />

of nonliving matter. Common beliefs dictated that snails came<br />

from mud, scallops came from sand, and fleas came from dust. The<br />

theory wasn’t formally disproved until the 19th century.<br />

1828<br />

The Life—and Death—of Vitalism<br />

Vitalism was the theory that organic molecules<br />

could only be made by living systems that possessed<br />

a “vital force” integral to synthesis. In 1828,<br />

Frederick Woehler heated ammonium cyanate<br />

and produced urea, artificially synthesizing an<br />

organic molecule and discrediting the theory.<br />

1862<br />

A Guesstimation Gone Wrong<br />

Various Times<br />

All That Glitters Is Not Gold<br />

Lord Kelvin used thermodynamic<br />

calculations to estimate the age of the<br />

Earth and the Sun. His numbers—that<br />

Earth was somewhere between twentyfour<br />

million and four hundred million<br />

years old—were a gross underestimation.<br />

Today, we know Earth’s true age is about<br />

4.5 billion years.<br />

For centuries, alchemy attracted scores of scientists,<br />

including Isaac Newton, who hoped to transform<br />

base metals into gold and discover the elixir of life. Of<br />

course, these attempts were wholly unsuccessful. Still,<br />

they paved the way for chemistry as we know it today.<br />

BY KEYA BAJAJ | ART BY ANNLI ZHU<br />

Early 1700s<br />

The Theory That Burned Out<br />

In the 18th century, the existence of a<br />

fire-like element called phlogiston was<br />

posited. Advancements in chemistry<br />

revealed that it was flawed, and by the end<br />

of the century, the theory was abandoned.<br />

Phrenology was the widespread belief that<br />

the shape of one’s skull could be examined<br />

to determine personality traits. The theory<br />

proposed that the brain was composed of a<br />

variety of muscles with different functions<br />

that were smaller or larger depending<br />

on how frequently they were used. This<br />

practice of measuring the skull’s lumps to<br />

assess a person’s mental traits was largely<br />

disproven by the 1840s and was eventually<br />

dismissed as pseudoscience.<br />

1840s<br />

The Failure of Phrenology<br />

1887<br />

The Disappearing Act<br />

In the 19th century, it was believed that<br />

the medium for light waves was an unseen<br />

substance that filled the universe: aether.<br />

In 1887, Michelson and Morley performed<br />

an experiment to detect aether wind. They<br />

compared the speed of light in perpendicular<br />

directions to detect the relative motion of matter<br />

through “aether wind.” Unsurprisingly, light<br />

traveled at the same speed in both directions,<br />

leading to the dismissal of this theory.<br />

6 Yale Scientific Magazine December 2023 www.yalescientific.org


2022<br />

Theranos: From A Single Drop To A Huge Flop<br />

In November 2022, Elizabeth Holmes, former<br />

CEO of infamous health tech company<br />

Theranos, was sentenced to over eleven years<br />

in prison for defrauding Theranos investors.<br />

Valued at ten billion dollars at the heights of<br />

its hype, Theranos claimed to have developed<br />

a blood test that could use just a single drop<br />

of blood to rapidly and accurately diagnose<br />

an array of health conditions. However, it was<br />

revealed shortly thereafter that Theranos had<br />

never in fact developed a functional blood test<br />

device, resulting in Holmes’ eventual arrest.<br />

1962<br />

Reversing Cellular Irreversibility<br />

1928<br />

The Serendipity of Penicillin<br />

In 1928, Dr. Alexander Fleming noticed mold<br />

growing on his Petri dish on staphylococcus<br />

bacteria. Something seemed to prevent the<br />

surrounding bacteria from growing—which<br />

we now know to be penicillin. This accidental<br />

discovery paved the way for the rise of<br />

antibiotics and their therapeutic benefits.<br />

1912-1953<br />

The Paleontological Prank<br />

www.yalescientific.org<br />

Until the late 19th century, it was widely<br />

believed that cell differentiation was<br />

irreversible: a cell, once specialized,<br />

could not return to its original stem cell<br />

state. In 1962, John Gurgeon, among<br />

others, proved this wrong by defining<br />

the cell reprogramming technique,<br />

cloning frogs using nuclear transfer<br />

from differentiated cells, thus reversing<br />

differentiation.<br />

In 1911 and 1912, fossils discovered in<br />

Piltdown, England were believed to be<br />

those of the Piltdown Man, the missing link<br />

between apes and humans and the “earliest<br />

Englishman.” However, by 1953, it was<br />

discovered that the fossils were nothing but an<br />

elaborate forgery, involving a modern human<br />

skull and orangutan jawbone.<br />

In November 2017, the first annual Flat Earth<br />

International conference was held in Raleigh,<br />

North Carolina. Contrary to popular belief, the<br />

“scientific” theory that the Earth was flat rather<br />

than a sphere was most popular in the late 19th<br />

and early 20th century. Despite overwhelming<br />

(and obvious) evidence of Earth's spherical nature,<br />

a small, yet vocal, contingent of people continue to<br />

promote the theory of a flat Earth.<br />

In 1953, Watson and Crick famously<br />

announced their discovery of DNA’s double<br />

helix. Just earlier that year, though, chemist<br />

Linus Pauling, a two-time Nobel Prize<br />

winner, proposed that DNA comprised<br />

three intertwined strands, which we know<br />

today to be false. In stark contrast with the<br />

success of his model for protein structure,<br />

his DNA model was incorrectly built insideout,<br />

with three strands instead of two.<br />

Timeline<br />

SPECIAL<br />

2017<br />

Flat Earth Fanatics<br />

1998<br />

A Vexing Claim About Vaccines<br />

In 1998, Andrew Wakefield of the Royal Free<br />

Hospital School of Medicine published a study<br />

in The Lancet claiming that the measles, mumps,<br />

and rubella vaccine caused autism. The medical<br />

community quickly condemned the research<br />

study as clearly flawed in its design, and it was<br />

eventually retracted and declared fraudulent in<br />

2011. However, Wakefield remains a popular<br />

figure among the growing anti-vax movement.<br />

1953<br />

Pauling’s Triple Trouble<br />

1918-1926<br />

<strong>YSM</strong>’s “Troubled Years”<br />

The Yale Scientific Monthly, founded in 1894, was<br />

the predecessor to the Yale Scientific Magazine.<br />

While it took off in its early years, it faced its<br />

biggest hurdle in its 19th volume. The editorial<br />

board of the Monthly began focusing on student<br />

affairs at Yale’s Sheffield Scientific School. This<br />

choice diluted scientific content, until 1926, when the magazine was<br />

revived in its original vision as the Yale Scientific Magazine, which<br />

launched in 1927. The period from 1918 to 1926 has been dubbed by<br />

<strong>YSM</strong>’s Wikipedia page as “The Troubled Years.”<br />

December 2023 Yale Scientific Magazine 7


&<br />

By Sunny Vuong<br />

WHY IS “DISRUPTIVE” SCIENCE<br />

DWINDLING, WHILE “HYPE”<br />

LANGUAGE IS ON THE RISE?<br />

Find yourself wondering where the hype is? Look no further<br />

than recent language trends in science. Researchers in Japan<br />

and Canada examined 901,717 successful grant application<br />

abstracts submitted to the National Institutes of Health and found<br />

a significant increase in the use of promotional language from 1985<br />

to 2020. The 2022 study, published in the Journal of the American<br />

Medical Association, identified 139 adjective forms associated with<br />

hype, such as “novel,” “critical,” and “key,” with 130 of these showing<br />

an increase in frequency by 1,378 percent.<br />

In a separate trend, researchers from the Universities of Minnesota<br />

and Arizona explored whether scientific innovation is becoming<br />

more or less disruptive. They created the CD index, which measures<br />

disruptiveness by examining whether subsequent works cite the study<br />

itself (an indicator of greater disruptiveness) or the study’s references.<br />

The findings, published by Nature in January 2023, revealed<br />

that papers published since 1945 are less likely to be disruptive<br />

and more likely to consolidate existing knowledge. While older<br />

manuscripts from the 1950s tended to use words evoking discovery<br />

(such as “produce” or “determine”), recent research favored words<br />

referring to incremental progress (such as “improve” or “enhance”).<br />

Researchers concluded that a balance between disruptive research,<br />

which pushes boundaries, and incremental research, which refines<br />

existing knowledge, is essential to scientific advancement.<br />

Although these phenomena are revealing about modern scientific<br />

trends, it’s still unclear what the reasoning is behind them. Hype<br />

language and disruptiveness in science have yet to be declared as<br />

inherently good or bad—that may be for scientists now exploring<br />

these tendencies to decide. ■<br />

AMMONIUM CHLORIDE:<br />

FERTILIZER INGREDIENT,<br />

PICKLING AGENT...<br />

OR THE SIXTH TASTE?<br />

By Ethan Powell<br />

Sweet, sour, salty, and bitter were long believed to be the four<br />

basic human tastes. In the early twentieth century, a Japanese<br />

scientist claimed that the savory taste found in soy sauce was<br />

unique, and by 2002, "umami" was accepted as the fifth basic taste.<br />

Now, the discovery of a potential sixth taste—ammonium chloride—<br />

has brought scientists at the University of Southern California to the<br />

forefront of gastronomic research.<br />

Detectable in Scandinavian licorice, ammonium chloride has an<br />

enigmatic quality that recalls the sharpness of sea air or an earthy<br />

brininess. The compound, found in batteries and fertilizers, changes<br />

our perception of taste by modulating the flow of hydrogen ions,<br />

or protons, through OTOP1 receptors—protein channels in our<br />

taste bud cells associated with the detection of sourness. When<br />

dissolved in water, some ammonium molecules lose a hydrogen ion<br />

to form ammonia, which diffuses into our taste bud cells and lowers<br />

the intracellular proton concentration. The difference in proton<br />

concentration across the cell membrane drives their movement<br />

through the OTOP1 receptors, affecting our perception of taste.<br />

Researchers speculate that ammonium chloride’s distinctive flavor<br />

provided an evolutionary signal that steered ancient humans away<br />

from harmful substances. In experiments involving human cell<br />

cultures and live mice, researchers observed that mice with an intact<br />

OTOP1 receptor showed avoidance behaviors when introduced to<br />

ammonium chloride, while those without OTOP1 did not exhibit<br />

any reaction.<br />

As gastronomes and scientists alike await further studies, this<br />

research paves the way for not only a new category of taste but also<br />

a deeper understanding of the origins behind our dietary choices. ■<br />

8 Yale Scientific Magazine December 2023 www.yalescientific.org


Profile<br />

SHORT<br />

BRIAN NOSEK, GRD ‘02<br />

A CRISIS OF RESEARCH REPRODUCIBILITY<br />

BY NATHAN WU<br />

Replication is a key tenet of the scientific method. In theory, any<br />

discovery should be reproducible with identical procedures.<br />

However, scientists have become increasingly aware that<br />

in practice, most studies’ findings may be irreplicable, hinting at<br />

systemic flaws deep within scholarly research.<br />

After all, how can science be trusted if it<br />

builds upon unrepeatable results?<br />

Few understand these flaws better than<br />

Brian Nosek (GRD ‘02), co-founder and<br />

director of the Center for Open Science<br />

(COS). In 2015, Nosek and the COS<br />

made waves when they published a<br />

study in Science in which less than<br />

half of their attempts to replicate<br />

one hundred psychology<br />

experiments were successful.<br />

The study was among the first<br />

to empirically characterize the<br />

extent of the reproducibility crisis,<br />

drawing attention from scientists<br />

and non-scientists alike.<br />

Nosek traces his interest in<br />

interrogating the scientific process to a<br />

research methods class taken during his<br />

PhD at Yale. Nosek recalls reading papers<br />

detailing common issues in scientific practice,<br />

from publication bias to ignoring null results, and<br />

their solutions. What shocked him was that these studies dated back<br />

to the ‘60s. “We’re reading these papers in the 1990s, and for me, it<br />

was like, ‘wait a second—we’ve known the problem, we’ve known the<br />

solution; thirty years later, we’ve done nothing… what’s going on?’”<br />

Nosek said.<br />

This lack of progress led Nosek to take an interest in improving<br />

his own research methodology. One year, he collected data at the<br />

beach to obtain larger sample sizes. The next, he created a website<br />

to collect data on implicit biases, long before online data collection<br />

was commonplace. This would grow to become Project Implicit—<br />

since its creation, over twenty million people have taken an implicit<br />

association test on the site.<br />

When Nosek became a professor at the University of Virginia,<br />

his focus shifted beyond improving just his own methodology. “We<br />

started thinking about how we could build tools to help others do<br />

the same,” Nosek said. However, this technology-building work<br />

was ineligible for most grants, limiting its scope. All this changed<br />

in 2013 when Nosek received five million dollars from the Arnold<br />

Foundation to scale up his operations, thus creating the COS.<br />

The COS was originally centered around two projects from Nosek’s<br />

lab: the psychology “reproducibility project” and the creation of<br />

www.yalescientific.org<br />

Image Courtesy of the Center for Open Science<br />

the Open Science Framework (OSF). The OSF is a tool to help<br />

researchers document and share their experimental progress, all<br />

while promoting open science practice: making the entire research<br />

process transparent. Unlike the traditional system of only publishing<br />

completed work, the OSF tracks a project’s whole journey,<br />

including the initial research plan, any changes to it,<br />

null results, and more.<br />

The COS has grown substantially since its<br />

creation. In 2020, it introduced the Transparency<br />

and Openness (TOP) Factor, a metric to<br />

evaluate research journals’ adoption of the<br />

best practices of open science.<br />

In 2021, it released the results of a<br />

replication project focusing on cancer<br />

biology research. Open science has<br />

been growing, too. “If you look at<br />

every key performance indicator,<br />

the growth over the last decade<br />

has been nonlinear,” Nosek said. The<br />

OSF now has over half a million users,<br />

and many others have conducted studies<br />

evaluating replicability in fields from ecology<br />

to economics.<br />

Nosek hopes to add tools to the COS to help<br />

not only those producing research, but also<br />

those utilizing it. “What we want to do in the next ten<br />

years is [add] in the interaction between the research<br />

producer and the research consumer,” Nosek said. “The consumer<br />

could be policymakers or people way outside of the process.”<br />

Facilitating dialogue between research producers and consumers<br />

could hold researchers accountable for the thoroughness of their<br />

experimentation and reporting.<br />

So, how do we fix the reproducibility crisis?<br />

Nosek believes that changes to the publication process are<br />

required. Under the current model, scientists are rewarded for<br />

producing publishable findings. His proposed alternative is the<br />

“Registered Reports” model, where peer review is conducted prior<br />

to data collection, shifting the focus from getting results to having<br />

watertight methods. “Registered Reports changes the reward system<br />

for researchers… the decisions at journal level are no longer about<br />

the outcomes—they’re about the questions,” Nosek said.<br />

Despite his familiarity with the challenges of the knowledge<br />

production process, Nosek’s belief in science is unwavering. “The<br />

reason to trust science is because science doesn’t trust itself,” Nosek<br />

said. While mistakes are inevitable when pushing the boundaries<br />

of knowledge, what matters is that science is open for revision. For<br />

all the flaws plaguing the research process, science’s self-correcting<br />

nature remains ever-present. ■<br />

December 2023 Yale Scientific Magazine 9


Profile<br />

SHORT<br />

MARC ABRAHAMS<br />

MISSION IMPROBABLE<br />

BY MIA GAWITH<br />

Have you ever<br />

wondered about<br />

the physics behind<br />

why our cereal becomes<br />

soggy in milk, the most<br />

efficient way to turn a<br />

doorknob, an advanced<br />

toilet that analyzes what<br />

we excrete, or a method of<br />

identifying narcissists by<br />

looking at their eyebrows?<br />

The ideas may seem<br />

silly—improbable, even—<br />

but this is exactly the<br />

type of research that Marc<br />

Abrahams celebrates.<br />

After graduating in applied<br />

mathematics from Harvard<br />

University, Abrahams spent<br />

the early years of his career running a software company and writing<br />

humorous, inquisitive articles about science. But one day, a question<br />

struck him: Were there any journals that would publish the type of<br />

bemusing—yet very real—topics he wrote about?<br />

In 1995, Abrahams took matters into his own hands and cofounded<br />

a magazine that did just that: the Annals of Improbable<br />

Research (AIR). AIR’s website reads: “Real research, about anything<br />

and everything, from everywhere—research that’s maybe good or<br />

bad, important or trivial, valuable or worthless.” Four years earlier,<br />

Abrahams had also founded the Ig Nobel Prize Ceremony—an honor<br />

bestowed to researchers of both the unusual and the imaginative.<br />

Every year, traditional Nobel Laureates award Ig Nobel Prizes<br />

to the winners in a grand ceremony, which took place at Harvard<br />

University before the COVID-19 pandemic. Thousands of award<br />

nominations come in every year, but only a select few are chosen.<br />

1,100 spectators crowd into a room as paper airplanes fly in a<br />

dizzying flock above their heads and mini opera songs are bellowed<br />

across the stage. And looming above it all is the official mascot,<br />

“The Stinker”—a rendition of Auguste Rodin’s The Thinker statue<br />

fallen onto its back with its buttocks in the air.<br />

If that mental image made you pause and chuckle (internally<br />

or externally), then the ceremony did exactly what it intended.<br />

Abrahams’ work injects fun into science—the AIR and the Ig Nobel<br />

Prizes are united by an important goal: “to honor achievements<br />

that make people LAUGH, then THINK.”<br />

Abrahams argues that research is a process of discovery, one<br />

that ascribes importance to topics over time. Sometimes, the<br />

most important scientific advancements can be overshadowed<br />

for many years, their importance not discovered until much later.<br />

“Sometimes it’s years, sometimes it’s decades, and sometimes it’s<br />

centuries before people realize you can use [a discovery] to do<br />

something, and it changes everything,” Abrahams said. “The fact<br />

that something doesn’t seem important doesn’t really mean it’s not.”<br />

As such, Abrahams brings attention to research that is often<br />

overlooked in the scientific community, and which the public may<br />

otherwise never learn about. From this perspective, humor acts<br />

as the driving force behind the success of the AIR and Ig Nobel<br />

Prizes. On the one hand, humor can draw in both scientists and<br />

non-scientists alike. It’s one thing to sit in a crowded auditorium<br />

and watch researchers be solemnly awarded prizes; it’s another<br />

thing to watch the same researchers present their research in an<br />

exciting, often quick-witted way.<br />

At the same time, people may begin to pause and contemplate<br />

scientific research in ways they never had before. If you heard<br />

about a group of scientists who invented a toilet that analyzes<br />

excrement, you might be slightly grossed out at first, but you<br />

might also start to wonder: What technologies did they develop?<br />

Does this have applications for public health? Can we utilize the<br />

technology somewhere else?<br />

“This is a way of bringing a lot of stuff to people’s attention—stuff<br />

they would probably try to normally stay away from,” Abrahams<br />

said. “But now it’s the thing they want to know about most.”<br />

Abrahams is known by many monikers: “the Puck of Science” by<br />

the Journal of the American Medical Association and “the nation’s<br />

guru of academic grunge” by The Washington Post, to name a few.<br />

But talking to him, while he cracks jokes with a blown-up banner<br />

of “The Stinker” behind him, reveals who he is at heart: a scientist,<br />

guided by humor, with a profound drive to revitalize science. ■<br />

PHOTOS COURTESY OF MARC ABRAHAMS<br />

10 Yale Scientific Magazine December 2023 www.yalescientific.org


Profile<br />

SHORT<br />

STUART FIRESTEIN<br />

FASCINATION WITH FAILURE<br />

Stuart Firestein, the former chair of Columbia<br />

University’s Department of Biological<br />

Sciences, is a neuroscientist who studies<br />

the olfactory system, but he’s also an expert<br />

in something else—failure. In 2015, Firestein<br />

released a book, titled Failure: Why Science Is<br />

So Successful, that places failure at the heart<br />

of the scientific process.<br />

Firestein’s journey toward the topic of failure<br />

began while he was teaching a large cellular<br />

and molecular neurobiology lecture course<br />

at Columbia. For many years, his students<br />

were expected to read an excessively long<br />

textbook, titled Principles of Neuroscience.<br />

“It’s a book about the brain that weighs twice<br />

as much as the brain,” Firestein said.<br />

Firestein noticed a critical gap between<br />

what students were learning in the classroom<br />

and what the researchers were doing in the<br />

lab. “[Students] must have thought that the<br />

process of science is to get a lot of facts, put<br />

them in these books, and force [students] to<br />

memorize them and spit them back up on an<br />

exam, which is a very unpleasant experience,”<br />

he said. “And that’s not true either. [Scientists] don’t accumulate<br />

facts —we accumulate questions.”<br />

The experience led him to create a new course called “Ignorance,”<br />

which consisted of a variety of science faculty members meeting<br />

with students once a week for two hours to talk about everything<br />

they don’t know. “What’s their question?” Firestein asked. “Why<br />

did they settle on that as the important question? What are the<br />

other questions they’re ignoring while looking at this one? What<br />

are the questions this question will lead to?”<br />

The course became very popular as students began to<br />

understand scientific research not as a quest for facts, but rather<br />

as an investigation of ignorance. This course not only inspired<br />

Firestein’s first book, Ignorance: How It Drives Science, but also<br />

served as a jumping-off place for his contemplation of the role<br />

of failure in science.<br />

According to Firestein, failure is the best way to identify<br />

the questions that lay at the root of our scientific ignorance.<br />

“Let’s say you do an experiment, and it fails,” Firestein said.<br />

“There must be something you didn’t know when you set this<br />

up. We have to do some experiments before this experiment to<br />

figure out what it is we’re missing.” In Firestein’s view, failure<br />

IMAGE COURTESY OF STUART FIRESTEIN<br />

BY KAVYA GUPTA<br />

is an essential part of the scientific<br />

process that reveals our ignorance<br />

in actionable ways. Failure points<br />

the finger at what we don’t know,<br />

which allows us to then turn around<br />

and ask more meaningful questions<br />

about science. “It’s a way of gaining<br />

knowledge in the same way as a<br />

successful experiment. It is no less<br />

valuable, no less important, and no<br />

less a part of the process,” Firestein<br />

said. “So, things should fail. In fact,<br />

I think they should fail at a fairly<br />

high rate.”<br />

Despite its importance to scientific<br />

discovery, many students still struggle<br />

greatly with embracing failure. “We<br />

tend not to accept failure easily,”<br />

Firestein said. “We tend to see it as a<br />

negative.” He looks at natural failures<br />

in our environment to justify why we<br />

should be more open to failing.<br />

“If you look at the top predators, like<br />

lions and tigers, I think most of us think<br />

that they can just go out anytime they get a little hungry and<br />

bag a snack somewhere,” Firestein said. “But that’s not actually<br />

true. When you look at the predator-prey literature, you find<br />

these big critters are successful fewer than twenty-five percent<br />

of the time they go after something. Seventy-five percent of<br />

the time, the critter escapes.” Even the top of the top encounter<br />

failures, yet they learn from them and continue to try, whether<br />

by changing their methods or trying a new approach.<br />

Similarly, Firestein argues that accepting the natural likelihood<br />

of failures is especially important. “It is a regular part of the<br />

process,” he said. “It’s not like success and failure are two sides<br />

of a coin, but rather like two horses pulling a wagon in the same<br />

direction in their own particular way.”<br />

This is sometimes hard to understand, especially for young<br />

scientists who have struggled with accepting their failures in the<br />

past, but it’s a key part of finding the most fascinating scientific<br />

questions. “The truth, the correct answer, is narrow,” Firestein<br />

said. “It’s just narrow, and it doesn’t go anywhere. Whereas<br />

there are endless ways to screw up, and many of them are quite<br />

interesting. They take you down new pathways. Quite often, the<br />

screw-ups are really where the data comes out.” ■<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 11


FOCUS<br />

Cosmology<br />

REDISCOVERING<br />

COSMIC ORIGINS<br />

THE BIRTH OF THE SOLAR SYSTEM<br />

BY DAVID GAETANO | ART BY ANNLI ZHU<br />

It is easy to take for granted the vast scope<br />

of scientific understanding that humans<br />

have acquired over hundreds of thousands<br />

of years on Earth. Today, for example, the<br />

origin of the solar system is relatively well<br />

understood. But not too long ago, we were<br />

searching for an answer among a sea of<br />

endless theories.<br />

An article from the 1941 edition of the<br />

Yale Scientific Magazine (Vol. 15 No. 4), titled<br />

“The Origin of the Solar System,” is a time<br />

capsule that provides a firsthand account of<br />

the scientific community’s understanding<br />

of the solar system’s origins at the time. The<br />

writer, Lyman Spitzer Jr., was a well-respected<br />

Yale faculty member who earned his PhD<br />

in physics from Princeton University in<br />

1939. In his piece, Spitzer sought to analyze<br />

contemporary understanding of the origin<br />

of the solar system and place doubt on the<br />

existing theories of the time.<br />

Eighty years later, this article revisits<br />

Spitzer’s analysis. By reflecting on evolving<br />

scientific understanding, we can help<br />

provide motivation for further scientific<br />

advancement, as the cosmos still leaves much<br />

to be discovered.<br />

Early Theories<br />

“The rise and subsequent decline of the<br />

most important theories of the origin of the<br />

solar system are an instructive chapter in<br />

the history of science and cast light on the<br />

problems which an ultimately successful<br />

theory must face,” Spitzer wrote. At the time<br />

of his article, there were many different<br />

hypotheses surrounding the formation of<br />

the solar system, yet none could truly be<br />

rigorously proven. In fact, Spitzer criticized<br />

two of the leading hypotheses for their lack of<br />

concrete evidence.<br />

The first theory he analyzed was the<br />

nebular hypothesis, which argued that the<br />

sun was first created out of a huge, rotating<br />

cloud of gas and dust in space, which was<br />

then flattened into a disk. This disk would<br />

have subsequently condensed to form the sun<br />

and various planets seen in the solar system<br />

today. He argued that this hypothesis was<br />

impossible due to the conservation of angular<br />

momentum, which means that the sun would<br />

12 Yale Scientific Magazine December 2023 www.yalescientific.org


Cosmology<br />

FOCUS<br />

have to rotate much faster than observed to<br />

maintain the known laws of the universe.<br />

The second hypothesis Spitzer examined<br />

was coined the encounter theory. This idea<br />

proposed that the solar system was formed<br />

from the collision of two stars. This would<br />

give rise to the planar nature of the observed<br />

solar system as well as the debris and planets<br />

that orbit around the sun. However, Spitzer<br />

was not a fan of this hypothesis either. He<br />

argued that the debris pulled from the nearcollision<br />

of two stars would not have been<br />

able to condense into planetary objects like<br />

the ones observed today in the solar system.<br />

Such rapid cooling of the nebular gasses<br />

would have manifested into something more<br />

akin to an explosion rather than spherical<br />

planets, according to his theoretical<br />

calculations. “The origin of the solar system<br />

may well be a riddle which science will never<br />

wholly solve,” he concluded.<br />

Advancements in Scientific Technology<br />

The foundation of scientific study is<br />

rooted in empirical evidence and a rigorous<br />

commitment to skepticism. Spitzer’s article<br />

did not seek to reject ideation, but rather to<br />

adhere to the scientific method’s demands<br />

that theories be substantiated with empirical<br />

data. “There's nothing wrong with having an<br />

idea of how something might work without<br />

being able to go out and measure it,” said<br />

Charles Bennett, a professor of physics and<br />

astronomy at Johns Hopkins University. “In<br />

the end, you need to match simulations with<br />

observations to know that what you're doing<br />

is right.”<br />

Spitzer’s critiques shed light on the<br />

technological limitations of his time, which<br />

prevented many scientists from being able<br />

to experimentally prove their conclusions.<br />

Spitzer acknowledged that the mathematics<br />

required to go back two billion years is an<br />

“ambitious calculation” that would probably<br />

never be attempted.<br />

Today, the scientific landscape has evolved<br />

significantly. Technological advancements,<br />

particularly in computing technology and<br />

simulation power, have revolutionized<br />

our ability to create intricate models of the<br />

formation of the solar system. Further, the<br />

Hubble Space Telescope has even been used<br />

www.yalescientific.org<br />

to photograph stars surrounded by accretion<br />

disks of gas and dust, signaling an early stage<br />

of planetary formation. These new findings<br />

have proven pivotal: while Spitzer discounted<br />

the nebular hypothesis in his article, now we<br />

know it was not far off.<br />

The Winning Hypothesis<br />

Since Spitzer’s time, scientists have been<br />

able to conclude that the solar system was<br />

very likely created through the collapse<br />

of a nebular cloud of gas and dust from<br />

a nearby supernova. Today, the “solar<br />

nebula hypothesis” is widely accepted to<br />

be the most accurate account of the solar<br />

system’s origins.<br />

Avi Loeb, a renowned theoretical physicist<br />

and professor at Harvard, described the<br />

formation of the solar system as a series of<br />

events caused by a nearby supernova event,<br />

which is a massive explosion of a star that<br />

releases immense amounts of energy and<br />

material into space. The solar system formed<br />

about 4.6 billion years ago—just about onethird<br />

of the existence of the universe—from a<br />

giant cloud of gas and dust. The shockwaves<br />

from the supernova then triggered the<br />

collapse of this cloud. As it collapsed, gravity<br />

pulled the material together at the center,<br />

forming the sun, which is mostly composed<br />

of helium and hydrogen.<br />

Over time, small particles of leftover<br />

mass in the form of dust and gas began<br />

to condense in orbit around the early sun.<br />

This then created the rocky planets closest<br />

to the sun—where the hydrogen would<br />

be absorbed more quickly—leaving the<br />

gaseous planets like Jupiter and Neptune<br />

further away in orbit. “The universe started<br />

from a pretty uniform distribution of<br />

matter. There were small differences in the<br />

density of matter, and they grew over time<br />

because of gravity,” Loeb said. This process<br />

led to the diverse and fascinating solar<br />

system we know today.<br />

ABOUT THE AUTHOR<br />

One article, written by Michael Perryman<br />

of the University of Bristol, explained that this<br />

current “solar nebula hypothesis” accounts<br />

for early issues with the nebular hypothesis,<br />

such as the angular momentum discrepancy<br />

that Spitzer highlighted. Somehow the sun<br />

maintained most of the mass, but only a tiny<br />

percentage of the angular momentum of<br />

the solar system. The new theory reconciled<br />

this discrepancy by more chronologically<br />

describing the process by which the nebula<br />

compressed into a disk before beginning the<br />

sequential process of planetary formation.<br />

A Glimpse Forward: Finding Life<br />

Although the mystery of the origin of the<br />

solar system is somewhat resolved, there<br />

are natural questions that these resolutions<br />

leave unanswered. One such question is the<br />

existence of extraterrestrial life. By studying<br />

the formation of our solar system and the<br />

emergence of life on Earth, scientists can gain<br />

valuable insights into the potential habitability<br />

of other planets and celestial bodies. “Looking<br />

for life around stars is a very exciting frontier,”<br />

Loeb said. “One can search for signatures of<br />

microbial life. But one can also search for<br />

intelligent life.”<br />

Loeb highlighted the notion that the laws of<br />

physics, chemistry, and biology are universal,<br />

suggesting that the conditions conducive<br />

to life on Earth may very possibly exist<br />

elsewhere in the cosmos. This perspective<br />

enables scientists to assess the likelihood of<br />

life on exoplanets.<br />

Spitzer, eighty years ago, was simply<br />

hoping to figure out how the solar system<br />

formed. Now that we know the conditions<br />

that led to life within our solar system, we<br />

can launch a new quest for life beyond our<br />

planet. We have the means to explore the<br />

broader cosmic environment and likewise<br />

form new hypotheses, critiques, technologies,<br />

and conclusions in the ongoing pursuit of<br />

alternative forms of life. ■<br />

DAVID GAETANO<br />

DAVID GAETANO is a sophomore in Ezra Stiles College studying mechanical engineering. In addition to<br />

writing for <strong>YSM</strong>, he is involved in the rocketry subteam of the Yale Undergraduate Aerospace Association.<br />

THE AUTHOR WOULD LIKE TO THANK Avi Loeb and Charles Bennett for their time and enthusiasm<br />

for scientific advancement in cosmology.<br />

FURTHER READING:<br />

Loeb, A. (2023). Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars. Mariner Books,<br />

an Imprint of HarperCollins Publishers.<br />

December 2023 Yale Scientific Magazine 13


FOCUS<br />

Medicine<br />

NATURE<br />

VS NURTURE<br />

Is Alcohol Use Disorder in Our Genes?<br />

By Matthew Blair and Lea Papa<br />

It is no secret that the genes we inherit from<br />

our parents determine simple physical<br />

traits such as hair color and height. That<br />

comes down to a mixture of certain genes,<br />

which include a randomness component<br />

related to the allele—or gene variant—we<br />

inherit. But when it comes to more complex<br />

human features, the connection to our genes<br />

is less clear. The impact of genes on behavior<br />

like alcohol use or even sexual orientation has<br />

long been the subject of scientific debate.<br />

In an article published in the Yale Scientific<br />

Magazine in 1929 (Vol. 3 No. 2), Yale Professor<br />

R. P. Angier weighed in on this “nature vs.<br />

nurture” debate. He questioned if our traits<br />

are impacted not only by complex genetic<br />

combinations, but also by the environment<br />

in which we live. He discussed two major<br />

schools of thought: the instinctivists and the<br />

environmentalists. The former hold the belief<br />

that our instinct, which we inherit and thus<br />

have no control over, drives our actions. The<br />

environmentalists differ. They believe that<br />

only the most basic of actions—like knowing<br />

how to swallow or turn one’s head—are<br />

inherited, while all other actions are learned<br />

through a process of trial and error. Angier<br />

himself took a binary approach to this debate,<br />

concluding that traits fall into one category or<br />

the other. “Alcoholism used to be labeled as<br />

a hereditary trait,” he wrote, “No competent<br />

medical man thinks so nowadays.”<br />

Since then, the current understanding<br />

of genetics and environmental factors has<br />

combined these two schools of thought, with<br />

alcohol misuse serving as an interesting test<br />

case. Both genetics and our environment play<br />

a role. “One is not against the other, but rather<br />

they both contribute to the predisposition<br />

to psychiatric and behavioral traits,” said<br />

Renato Polimanti, an associate professor of<br />

psychiatry at the Yale School of Medicine. So,<br />

how did we come to prove Angier wrong?<br />

The Unique Case of Alcohol Use Disorder<br />

Alcohol use disorder (AUD) is a leading<br />

cause of death and disability worldwide and<br />

is characterized by frequent and problematic<br />

drinking behaviors, such as binge drinking,<br />

loss of control, and continued drinking<br />

despite harmful consequences. In the 170<br />

years since the term “alcoholism” was first<br />

classified as a behavior, problematic drinking<br />

has been a widely studied condition to settle<br />

the nature versus nurture argument.<br />

Early on, it was believed that alcoholism was<br />

inherited. This simple view, however, quickly<br />

started to change. By 1929, as Angier wrote,<br />

the general view had completely reversed:<br />

alcoholism was primarily seen as the result<br />

of environmental factors. When AUD was<br />

classified as a brain disorder in 1956, as we<br />

generally understand it today, this issue took<br />

a far more complicated turn.<br />

As it turns out, there is no “alcoholic” gene<br />

in the human genome, nor is there an absolute<br />

“AUD-causing” environment or situation.<br />

Art By Patricia Joseph<br />

14 Yale Scientific Magazine December 2023 www.yalescientific.org


Medicine<br />

FOCUS<br />

Alcoholism<br />

has a substantial<br />

impact on both mental and<br />

physical health and can present different<br />

features among affected individuals. Due to<br />

this, the mechanisms and possible causes of<br />

alcoholism cannot be as easily identified as<br />

diseases such as hemophilia, which presents<br />

clear physical symptoms. But in the decades<br />

since Angier’s article, scientists have made<br />

strides in figuring out the mystery of what<br />

really underlies this unique disease.<br />

Searching for AUD in Our Genes<br />

In 1990, an initially promising study of the<br />

genetic basis of alcoholism was conducted by<br />

Kenneth Blum, a professor at the University<br />

of Texas Health Science Center. The study<br />

found that there was a very strong connection<br />

between the D2 dopamine receptor gene and<br />

the development of alcoholism or problematic<br />

drinking behaviors. In their patient sample,<br />

the researchers found that in those with AUD,<br />

all had a higher frequency of one specific allele<br />

in the dopamine D2 receptor gene, suggesting<br />

that it was strongly associated with AUD.<br />

However, one year later, Joel Gelernter, a<br />

professor of genetics and neuroscience at the<br />

Yale School of Medicine, along with his team<br />

could not find the association between the D2<br />

dopamine receptor gene and AUD, showing a<br />

lack of replicability in the earlier study.<br />

While the D2 dopamine receptor gene did<br />

not have the effect expected on alcoholism,<br />

the study contributed to moving forward<br />

genetic research. “We know now that it was<br />

only a first step of a very long road of complex<br />

genetics,” said Renato Polimanti, a colleague<br />

of Gelernter at the Yale School of Medicine.<br />

In contrast to Angier’s conclusion that AUD<br />

is decided by the environment, scientists have<br />

since found multiple genetic players.<br />

The effort to uncover the genetic mysteries of<br />

AUD was—and is—long from over. Between<br />

the D2 dopamine receptor findings in the<br />

1990s and 2020, researchers have identified<br />

more than a dozen variants for AUD. In 2020, a<br />

research team including Gelernter, Polimanti,<br />

and Hang Zhou, an assistant professor of<br />

psychiatry at Yale, was able to greatly expand<br />

upon previous findings regarding alcoholism<br />

through a genome-wide association study<br />

published in Nature Neuroscience.<br />

www.yalescientific.org<br />

The team was able to identify twenty-nine<br />

genes linked to increased risk of problematic<br />

alcohol use—nineteen of them novel—in the<br />

human genome, extending the known genetic<br />

architecture of the disorder and giving other<br />

scientists a wider breadth of targets for followup<br />

studies. Researchers found that six to<br />

eleven percent of the phenotypic variation—<br />

referring to differences in what physical and<br />

behavioral traits are expressed—could be<br />

explained by genetic information.<br />

The goal of genetic studies, however, is<br />

not only to find associations but also to<br />

understand how these variants might promote<br />

the development of AUD. In their study,<br />

the Yale team discovered that the risk genes<br />

were correlated to changes in certain brain<br />

regions. This finding suggested to researchers<br />

that the risk variants promoted certain brain<br />

pathways that contribute to the development<br />

of behavior patterns and disorders.<br />

Such pathways are not exclusive to AUD.<br />

The researchers discovered a strong genetic<br />

correlation between problematic alcohol<br />

use and 138 other conditions, including<br />

substance abuse disorders, depression, and<br />

schizophrenia. “AUD has many variants<br />

across the genome that are involved in the<br />

predisposition of this trait, but these variants<br />

are not only predisposing to AUD, they are<br />

predisposing to many things,” Polimanti<br />

said. “It can depend on where [risk variants]<br />

play a role, maybe in sensitivity to a<br />

substance, or to addiction pathways in the<br />

brain, or to reward systems.”<br />

Moving Forward<br />

This research does not mean AUD is solely<br />

explained by genetics. Rather, in AUD, only<br />

about fifty percent of the risk appears to be<br />

attributed to our genes. This is relatively<br />

ABOUT THE<br />

AUTHORS<br />

small in comparison to schizophrenia,<br />

where genetics can explain eighty percent<br />

of the disease predisposition. Therefore, as<br />

research progresses, consideration must<br />

still be made for the environment—the<br />

“nurture”—that individuals were raised and<br />

live in. “Genetic variants among individuals<br />

cannot explain everything. We need to<br />

spend more time in gene discovery before<br />

bringing it into patient care,” Zhou said.<br />

Beyond addressing the nature versus<br />

nurture debate, this research has a broader<br />

aim. According to Polimanti and Zhou,<br />

geneticists hope to be able to bring their<br />

findings to human healthcare in order to<br />

help predict and treat certain illnesses. This is<br />

called precision medicine, wherein a person’s<br />

treatment plan can be specially tailored based<br />

on their unique genetic makeup.<br />

Until we get there, research will continue<br />

focusing on identifying genetic variants and<br />

possible mechanisms behind risk. Polimanti<br />

explained that for certain illnesses like<br />

cardiovascular disease, the field of genetics<br />

is expected to transform treatments in the<br />

coming years. “We will keep doing gene<br />

discovery and use increasingly advanced<br />

technology to deliver this information and get<br />

a deeper understanding of the role genetics<br />

play in human health,” Zhou said.<br />

The study of AUD has been marked<br />

by both successes and failures. Now, we<br />

enter an exciting time where genetic and<br />

environmental studies promise great strides<br />

for the understanding of our human genome<br />

and real changes in clinical care. Nature and<br />

nurture, instinctivists and environmentalists,<br />

the D2 dopamine receptor and twenty-nine<br />

other discovered genes, and, now, precision<br />

medicine, are all important themes in the<br />

long and evolving story of alcoholism and<br />

scientific discovery. ■<br />

MATTHEW BLAIR<br />

LEA PAPA<br />

MATTHEW BLAIR is a sophomore in Benjamin Franklin College from Manchester, NH, majoring in<br />

the History of Science, Medicine, and Public Health. In addition to copy editing for <strong>YSM</strong>, Matthew<br />

conducts lung cancer research in the Schalper Lab at the Yale School of Medicine and plays for the<br />

club ice hockey team.<br />

LEA PAPA is a sophomore in Ezra Stiles College from South Milwaukee, WI, studying neuroscience.<br />

Outside of <strong>YSM</strong>, Lea is involved in Yale’s Questbridge Chapter, is working towards becoming an EMT,<br />

and recently joined the Yale Undergraduate Research Journal Humanities Committee.<br />

THE AUTHORS WOULD LIKE TO THANK Renato Polimanti and Hang Zhou for their time and expertise.<br />

December 2023 Yale Scientific Magazine 15


FOCUS<br />

Infectious Disease<br />

THE<br />

TO FIGHT TICKS<br />

TICKING CLOCK<br />

THE LYME DISEASE VACCINE'S<br />

COMEBACK STORY<br />

BY CINDY MEI<br />

ART BY DIYA NAIK<br />

16 Yale Scientific Magazine December 2023 www.yalescientific.org


Infectious Disease<br />

FOCUS<br />

Tick spray might not be the first thing<br />

you think of when preparing to<br />

go backpacking. However, if gone<br />

undetected, these small arachnids can<br />

feed and feed, increasing the likelihood<br />

of transmission of dangerous bacteria.<br />

Named for the city of Lyme, Connecticut,<br />

where it was first detected, Lyme disease is<br />

most commonly spread by Ixodes ticks and<br />

is the most common tick-borne illness in<br />

the Northeast region of the United States.<br />

If left untreated, the disease can cause<br />

debilitating effects on the heart, joints,<br />

muscles, and nervous system. According<br />

to the CDC, reports of Lyme disease have<br />

doubled in the United States since 2000,<br />

reflecting a growing need for prevention.<br />

In 1993, the Yale Scientific Magazine<br />

reported on a novel vaccine being tested<br />

against Lyme disease (Vol. 67 No. 2). The<br />

writer, Emily Ho, estimated that the vaccine<br />

would be “available for the public sometime<br />

in 1995.” However, as of today, there are<br />

no Lyme disease vaccines available for<br />

humans. What went wrong?<br />

Revisiting the Past<br />

The story began in 1988, when Erol<br />

Fikrig—then a postdoctoral researcher—<br />

met with Richard Flavell, who was the<br />

newly appointed chair of immunobiology at<br />

the Yale School of Medicine. “We decided,<br />

why don’t we make a vaccine against Lyme<br />

disease?” said Fikrig, now the Waldemar<br />

von Zedtwitz Professor of Medicine at Yale.<br />

So, they started looking for a target.<br />

Lyme disease is caused by Borrelia<br />

burgdorferi, which is a pathogenic spirochete<br />

(a type of slender, spiral-shaped bacteria).<br />

It was known that a key part of protection<br />

against Lyme disease in animals is mediated<br />

by humoral immunity, a type of immune<br />

response that can be passive or active. In<br />

active immunity, B cells (a type of white blood<br />

cell) produce antibodies that specifically<br />

recognize and destroy an encountered<br />

foreign antigen, conferring future protection<br />

against that antigen. In passive immunity,<br />

blood serum containing these antibodies<br />

can be transferred to other animals to confer<br />

protection against the target antigen.<br />

Previously, it was shown that<br />

immunization of hamsters with serumcontaining<br />

antibodies against B. burgdorferi<br />

prevented infection when the hamsters<br />

were challenged with the bacterial strain.<br />

Dr. Erol Fikrig pipetting in the lab.<br />

PHOTOGRAPHY BY PAUL-ALEXANDER LEJAS<br />

However, scientists did not know what<br />

specific antigens trigger the production<br />

of protective antibodies against Lyme<br />

disease. Fikrig and Flavell would have to<br />

solve that mystery.<br />

In their 1990 paper published in<br />

Science, Fikrig and Flavell—along with<br />

collaborators Stephen Barthold and Fred<br />

Kantor—hypothesized that a possible<br />

candidate for the antigen was outer surface<br />

protein A (OspA), which is a lipoprotein (a<br />

particle composed of fats and proteins), on<br />

B. burgdorferi. To test this hypothesis, the<br />

gene for OspA in a B. burgdorferi strain<br />

was cloned into the bacteria E. coli, such<br />

that the E. coli would express OspA. Mice<br />

then received either the OspA-transformed<br />

bacteria or a control. Four weeks later, an<br />

antibody response was detected in mice that<br />

received the OspA-transformed bacteria,<br />

suggesting that humoral immunity had<br />

developed in response to OspA.<br />

The team found that the mice that received<br />

the OspA-transformed bacteria were<br />

successfully protected from infection from B.<br />

burgdorferi. While the control mice showed<br />

evidence of arthritis, inflamed heart tissue,<br />

and infection in blood and spleen cultures,<br />

mice that received the OspA-transformed<br />

bacteria showed no sign of infection—all<br />

signs pointed towards successful immunity.<br />

Lastly, the researchers found that the serum<br />

of the protected mice conferred similar<br />

prevention against infection when injected<br />

into new mice, demonstrating effective<br />

passive immunization.<br />

Studies like this one paved the way for a<br />

human vaccine against Lyme disease. Indeed,<br />

in the <strong>YSM</strong> article published thirty years ago,<br />

which covered a similar study highlighting<br />

the potential of the OspA vaccine, the<br />

writer was optimistic about<br />

the vaccine’s release<br />

in 1995. What happened, then, over these<br />

three decades?<br />

LYMErix and The Revival of The OspA<br />

Vaccine<br />

According to Fikrig, biopharmaceutical<br />

company GlaxoSmithKline signed an<br />

agreement with Yale to develop the<br />

vaccine. Fikrig and Flavell advised them<br />

as they developed a three-dose vaccine for<br />

humans, under the name LYMErix. The<br />

last phase of clinical trials for the vaccine<br />

enrolled over ten thousand patients in<br />

endemic areas, and demonstrated that<br />

LYMErix was safe and effective in reducing<br />

the occurrence of Lyme disease in humans.<br />

Following FDA approval, LYMErix was<br />

released to the public in 1998.<br />

Unfortunately, LYMErix’s success was<br />

short-lived. The vaccine was discontinued in<br />

2002, even though it remains FDA-approved.<br />

LYMErix’s brief time on the market saw<br />

low demand and a potential onslaught<br />

of lawsuits alleging the vaccine caused<br />

arthritis. “These rumors were circulating<br />

that the vaccine was making people sick.<br />

There was absolutely no evidence for that,<br />

and there still is absolutely no evidence for<br />

that,” said Flavell, who is now a Sterling<br />

Professor of Immunobiology at Yale.<br />

However, the controversy, combined<br />

with the lack of interest, was enough for<br />

GlaxoSmithKline to remove LYMErix<br />

from the general public. There has not<br />

been another Lyme disease vaccine for<br />

humans since then.<br />

However, that may soon change. Major<br />

pharmaceutical companies such as<br />

Pfizer and Valneva are now interested<br />

in developing a new Lyme vaccine. The<br />

principle behind how these new vaccines<br />

would function is similar to findings<br />

from past research. “You need a high<br />

titer [concentration] of OspA antibodies<br />

to work in both [the old and the new<br />

vaccines] . . . they’re fundamentally the<br />

same in that regard,” Fikrig said. The new<br />

vaccines are now being tested in clinical<br />

trials, offering the possibility that a human<br />

vaccine for Lyme disease may soon return<br />

to the market.<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 17


FOCUS<br />

Infectious Disease<br />

Beyond Lyme Disease:<br />

A Vaccine Against Ticks<br />

While pharmaceutical<br />

companies try to revive<br />

OspA vaccine efforts,<br />

Fikrig and Flavell have moved<br />

on. They are searching for success with a<br />

different approach—one that might be able<br />

to prevent all tick-borne illnesses. Besides<br />

Lyme disease, Ixodes ticks are also carriers<br />

of illnesses such as babesiosis, Powassan<br />

virus, and anaplasmosis, which can cause<br />

debilitating health effects in humans. Fikrig<br />

and colleagues utilized an anti-tick approach<br />

to a vaccine in their recent paper published<br />

in Science Translational Medicine in 2021.<br />

The idea of using an mRNA vaccine for tick<br />

immunity was formulated in 2019 in<br />

collaboration with Drew Weissman,<br />

who is now a co-winner of the<br />

2023 Nobel Prize in Physiology or<br />

Medicine for his work on mRNA<br />

vaccine technology (which was<br />

foundational for the development<br />

of the Pfizer-BioNTech COVID-19<br />

vaccine). The mechanism of these vaccines<br />

relies on the delivery of mRNA, which<br />

directs the production of a small, harmless<br />

piece of a target antigen in host cells so that<br />

the immune system will learn to mount a<br />

response against them if encountered again.<br />

Rather than targeting specific antigens<br />

associated with Lyme disease, the researchers<br />

focused on the source—proteins found in the<br />

tick’s saliva, which is secreted into humans at<br />

the site of the bite.<br />

After identifying nineteen salivary proteins<br />

with high immunogenicity (ability to trigger<br />

an immune response), the researchers created<br />

a cocktail of mRNA encoding those proteins.<br />

They placed this cocktail, called<br />

19ISP, in lipid nanoparticles—<br />

which protect the mRNA from<br />

premature degradation—for<br />

delivery. Two weeks after<br />

injecting it into guinea pigs,<br />

antibodies against ten of the<br />

nineteen proteins were detected<br />

in the serum of the immunized<br />

guinea pigs, while none were observed in<br />

the control group, suggesting that exposure to<br />

19ISP triggered a humoral response.<br />

Following this, the guinea pigs then<br />

underwent tests to examine whether 19ISP<br />

vaccination was effective in generating tick<br />

immunity and resistance against Lyme<br />

disease. “We showed that if you give [19ISP]<br />

to a guinea pig and then put ticks on it,<br />

the ticks feed very poorly, you get redness<br />

where the ticks feed, and the [ticks] detach<br />

and die quickly. And then we showed that if<br />

you put ticks that have the disease-causing<br />

agent in them, the guinea pigs will not get<br />

Lyme disease,” Fikrig said.<br />

In comparison, control guinea pigs<br />

had low rates of tick detachment, did not<br />

show redness, and were susceptible to B.<br />

burgdorferi. These results suggest that<br />

19ISP may be a viable solution in both<br />

the early detection of tick attachment<br />

and the facilitation of tick detachment. “I<br />

think we have a vaccine that can increase<br />

tick recognition and prevent Borrelia<br />

transmission,” Fikrig said. “And hopefully,<br />

at some point, that may be available<br />

to the public. We don’t know yet,<br />

but it may be useful in preventing<br />

more than just Lyme disease.”<br />

Future Directions<br />

The “anti-tick” approach is<br />

crucial because Ixodes represent just one<br />

genus of ticks that carry illness. Other<br />

ticks pose their own threats. Saliva from<br />

Amblyomma ticks, for example, is thought<br />

to cause red meat allergy in humans,<br />

according to Fikrig. The tick’s saliva<br />

proteins may contain the sugar<br />

molecule alpha-gal, which is<br />

found in most mammals but<br />

not in humans. When the tick’s<br />

ABOUT THE AUTHOR<br />

saliva is transferred to humans, alpha-gal<br />

is flagged as a foreign antigen, triggering a<br />

severe immune response when alpha-gal is<br />

encountered again, such as in red meat and<br />

milk. “I think that our anti-tick vaccine can<br />

be the first ever vaccine against an allergic<br />

condition,” Fikrig said. In the past, it was<br />

demonstrated that immunity to Ixodes<br />

ticks can protect against other diseasespreading<br />

tick species (e.g. Amblyomma<br />

and Dermacentor); however,<br />

their specific 19ISP cocktail<br />

has yet to be tested for this<br />

cross-protection.<br />

In addition to solving<br />

these mysteries, Fikrig<br />

and Flavell are working<br />

with a worldwide network of<br />

collaborators to explore whether the antiinsect<br />

approach can be applied to other<br />

infectious diseases. Flavell highlighted<br />

that this approach may be applicable<br />

to other creatures that spread disease.<br />

“We’ve brought together a consortium<br />

of people to develop this concept, and if<br />

we’re very lucky, we could hopefully make<br />

a dent in diseases like malaria, which is<br />

a huge problem," Flavell said. Despite<br />

previous roadblocks in the history of<br />

Lyme disease vaccines, the researchers<br />

have continued to forge ahead to meet<br />

greater success than before—and<br />

pioneered an approach that<br />

could revolutionize vaccines for<br />

allergies and broader infectious<br />

disease prevention. ■<br />

CINDY MEI<br />

CINDY MEI is a junior in Grace Hopper studying neuroscience. In addition to writing for <strong>YSM</strong>, she<br />

serves as vice president on the Junior Class Council and co-director of Yale Math Competitions. She also<br />

conducts epilepsy and Tourette’s syndrome research at the Yale School of Medicine.<br />

THE AUTHOR WOULD LIKE TO THANK Erol Fikrig and Richard Flavell for their time and enthusiasm<br />

about their research.<br />

CITATIONS:<br />

Fikrig, E., Barthold, S.W., Kantor, F.S., & Flavell, R.A. (1990). Protection of mice against the Lyme disease<br />

agent with recombinant OspA. Science, 250 (4980), 553-556. doi: 10.1126/science.2237407.<br />

Ho, E. (1993) Lyme Disease: Unmasking the Great Imitator. Yale Scientific Magazine, p. 62-64.<br />

Sajid, A., Matias, J., Arora, G., Kurokawa, C., Deponte, K., Tang, X., Lynn, G., Wu, M., Pal, U., Strank, N.O.,<br />

Pardi, N., Narasimhan, S., Weissman, D., & Fikrig, E. (2021). mRNA vaccination induces tick resistance<br />

and prevents transmission of the Lyme disease agent. Science Translational Medicine, 13 (620), doi:<br />

10.1126/scitranslmed.abj9827<br />

18 Yale Scientific Magazine December 2023 www.yalescientific.org


Chemistry<br />

FOCUS<br />

REVISITING PFAS<br />

What<br />

Happened To<br />

The “Brilliant<br />

Future” of<br />

Forever<br />

Chemicals?<br />

BY EVELYN JIANG<br />

ART BY LUNA AGUILAR<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 19


FOCUS<br />

Chemistry<br />

Life on Earth depends on interactions<br />

between carbon and hydrogen, as<br />

they come together to form bonds<br />

that serve as the backbone of many<br />

organic molecules. However, it is the<br />

element fluorine that forms the strongest<br />

single bond with carbon. Chemists tried<br />

to create these carbon-fluorine bonds in<br />

the late 1800s, and by the early 1930s, they<br />

succeeded by replacing hydrogen atoms<br />

with fluorine in organic molecules.<br />

Their breakthrough led to the<br />

development of some of the most resilient<br />

compounds in organic chemistry today:<br />

per- and polyfluoralkyl substances,<br />

or PFAS, which all contain fluorinecarbon<br />

chains. This extensive family<br />

of synthetic compounds comprises<br />

thousands of chemicals known for<br />

their exceptional durability and<br />

resistance to degradation, earning<br />

them the fitting nickname<br />

“forever chemicals.”<br />

Since their introduction into<br />

the market in the 1950s, PFAS have<br />

been incorporated into a wide range<br />

of products, from waterproof garments<br />

to non-stick pans to firefighting<br />

foam. However, mounting<br />

evidence indicates that<br />

these forever chemicals<br />

have infiltrated not only<br />

our consumer goods,<br />

but also our drinking<br />

water, our soil, and even<br />

our bodies.<br />

“A Wonder of Modern Science”<br />

The birth of PFAS can be traced to the<br />

so-called “Chemical Century,” which<br />

witnessed notable advancements in the<br />

field and the increasingly widespread use<br />

of synthetic chemicals across society. The<br />

chemical industry was deeply connected<br />

to military power and warfare during<br />

this period. For instance, DuPont’s Teflon<br />

(polytetrafluoroethylene)—one of the<br />

most notorious PFAS—was used during<br />

the Manhattan Project when creating<br />

warheads, liquid-fuel tanks, and even the<br />

atomic bomb dropped on Nagasaki in 1945.<br />

Several of the researchers involved in<br />

the Manhattan Project would go on to join<br />

the multinational company 3M to further<br />

develop PFAS. By 1951, the company began<br />

producing perfluorooctanoic acid (PFOA),<br />

a PFAS. PFOA was sent to a DuPont plant<br />

in Parkersburg, West Virginia, where<br />

commercial Teflon products would be<br />

manufactured. Around the same time, 3M<br />

also began producing Scotchgard, a brand<br />

of fabric stain and water-repellant sprays,<br />

using another PFAS called perfluorooctane<br />

sulfonic acid (PFOS).<br />

PFAS were also used in Apollo<br />

space missions and emerging medical<br />

technologies, as seals on ventilators and<br />

as a coating for medical catheters. It<br />

seemed PFAS could be used in everything,<br />

everywhere, and was heralded as a “wonder<br />

of modern science.” The optimism of the<br />

era is reflected in the pages of the May<br />

1956 issue of the Yale Scientific Magazine<br />

(Vol. 30 No. 8), which proclaimed that<br />

“from [Teflon’s] unique characteristics a<br />

brilliant future can be inferred.”<br />

Unique Chemical Characteristics<br />

As past <strong>YSM</strong> writer Robert J. Lontz laid<br />

out in that article, PFAS owed its industrial<br />

desirability to a unique combination of<br />

properties that made it well-suited for a<br />

wide range of applications.<br />

Lontz first pointed out that the strong<br />

dielectric properties of PFAS make it an<br />

excellent electrical insulator, capable of<br />

preventing the flow of electric current<br />

through the material. Due to the strength<br />

of its carbon-fluorine bonds, PFAS are<br />

also chemically inert, meaning they<br />

remain stable and unreactive when<br />

subjected to various other chemicals or<br />

environmental conditions.<br />

Teflon also offers, as Lontz wrote, a<br />

“waxy, slippery surface.” PFAS are wellknown<br />

for their non-stick and lowfriction<br />

properties, and have thus been<br />

used to create surfaces that do not adhere<br />

to other materials, making them easy<br />

to clean. Finally, PFAS are inherently<br />

water-repellent. They form a protective<br />

barrier on surfaces, making them ideal<br />

for applications such as water-resistant<br />

clothing or any materials that need to<br />

repel moisture.<br />

A Double-Edged Sword<br />

Nearly seventy years after Lontz’s article<br />

was published, it has become clear that the<br />

same unique characteristics that led to PFAS<br />

being dubbed “forever chemicals” are<br />

closely intertwined with their<br />

potential health and environmental<br />

risks. “Certain members of the PFAS family<br />

have come to light as biologically and<br />

environmentally persistent compounds with<br />

bioaccumulation potential in the last few<br />

decades,” said Gary Ginsberg, the director<br />

of the Center for Environmental Health for<br />

the New York State Department of Health,<br />

a former member of the EPA’s Science<br />

Advisory Board, and a clinical professor at<br />

the Yale School of Public Health.<br />

In contrast to other persistent organic<br />

compounds, which primarily accumulate<br />

in fats, PFAS behave differently. Being<br />

water-soluble, they can follow natural<br />

solubility pathways by dissolving in<br />

water and infiltrating groundwater. This<br />

dispersal can lead to additional ecological<br />

impacts, including uptake into fish and<br />

drinking water supplies.<br />

In 1998, Wilbur Earl Tennant, a farmer<br />

from Parkersburg, West Virginia, noticed<br />

his cows were dying from a mysterious<br />

illness. He approached lawyer Robert Bilott<br />

who would go on to investigate the DuPont<br />

company, whose chemical plant was<br />

located in the town. By 1999, Bilott filed a<br />

federal lawsuit against DuPont for dumping<br />

PFOA waste into local water supplies. In<br />

April 2003, the Environmental Protection<br />

Agency (EPA) initiated a comprehensive<br />

review of the synthetic chemical, raising<br />

concerns about its prevalence.<br />

Of particular concern to the EPA was<br />

the early evidence suggesting that traces<br />

of PFOA could already be detected in the<br />

blood of nearly all U.S. citizens. According<br />

to a study based on 2011-2012 data<br />

from the National Health and Nutrition<br />

Examination Survey (NHANES), PFAS<br />

was detected in the blood of ninety-seven<br />

percent of Americans tested.<br />

This statistic becomes all the more<br />

alarming when considering the wellestablished<br />

health hazards<br />

associated with PFAS<br />

exposure, which include<br />

20 Yale Scientific Magazine December 2023<br />

www.yalescientific.org


Chemistry<br />

FOCUS<br />

cancer, thyroid disorders, developmental<br />

issues, and disruptions to the immune<br />

system. “One of the main drivers for the<br />

dose-response [of PFAS] seems to be their<br />

unusual propensity to have long human<br />

half-lives on the order of three to six<br />

years,” Ginsberg said.<br />

Scares & Successes<br />

Both PFOA and PFOS were phased out<br />

of production and use in the U.S. in the<br />

mid-2000s through industry agreements<br />

with the EPA. Data from the NHANES,<br />

which has done bio-monitoring work<br />

since the late 1990s, has shown that levels<br />

of PFOA and PFOS levels in the U.S.<br />

population have been declining. Notably,<br />

blood PFOS levels declined by more than<br />

eighty-five percent from 1999 to 2018, and<br />

blood PFOA levels declined by more than<br />

seventy percent.<br />

Many state policymakers have been<br />

increasingly focusing on the issue of<br />

PFAS, particularly over the past five years.<br />

Notable actions were taken by Vermont,<br />

which established maximum contaminant<br />

levels for PFAS in water, and Minnesota,<br />

which prohibited specific flame-retardant<br />

chemicals in furniture and children’s<br />

products. In 2020 and 2021, states<br />

continued to address concerns about PFAS<br />

with numerous bills, targeting regulation<br />

in firefighting foam, consumer products,<br />

and drinking water.<br />

According to Ginsberg, current<br />

concerns include occupational<br />

exposures and the toxicology of<br />

newer generations of PFAS. Krystal<br />

Pollitt, an associate professor of<br />

epidemiology at the Yale School of<br />

Public Health, shared a similar view.<br />

“One of the challenges with measuring<br />

these chemicals is that there are over<br />

ten thousand PFAS and current EPA<br />

methods only cover about<br />

twenty of them,” she said.<br />

Given the known health<br />

risks associated with PFAS,<br />

it is perplexing that it took<br />

until March 2023 for the<br />

EPA to propose the National<br />

Primary Drinking Water Regulation<br />

(NPDWR). If enacted, the NPDWR would<br />

represent the first national drinking water<br />

standard for PFAS, imposing enforceable<br />

limits on levels of six common PFAS<br />

www.yalescientific.org<br />

chemicals—including PFOS and PFOA—<br />

in drinking water. Unfortunately, this<br />

much-needed measure arrives far too late<br />

for many who have already endured the<br />

adverse effects of PFAS exposure in the<br />

seven decades since its introduction into<br />

commercial use. Why did it take so long to<br />

take federal action against PFAS?<br />

The Precautionary Principle’s Call<br />

The heart of the issue lies within our<br />

regulatory systems. “The challenge lies not<br />

only in regulating PFAS but in regulating<br />

any chemical or substance,” Ginsberg said.<br />

He explained that it has been decades<br />

since the EPA last determined the need<br />

for a new maximum contaminant level or<br />

implemented additional regulations for<br />

any substance. This is due in part to the<br />

challenges surrounding implementing new<br />

regulations and navigating through multiple<br />

levels of governmental policy review.<br />

The story of PFAS and the NPDWR<br />

underscores a disconcerting reality that,<br />

for decades, there has been a failure within<br />

regulatory and legislative frameworks<br />

to proactively address emerging<br />

environmental and health threats. While<br />

the EPA is working to be more predictive of<br />

such threats by employing advanced Toxcast<br />

testing methods and their Unregulated<br />

Contaminant Monitoring Rule testing<br />

program to detect emerging contaminants<br />

in drinking water, it has become evident<br />

that creating meaningful change<br />

within this system is a process that<br />

takes time.<br />

ABOUT THE AUTHOR<br />

“The optimal way forward<br />

would be to regulate PFAS<br />

as a class,” Pollitt said. As<br />

of now, researchers<br />

including Pollitt<br />

are still working<br />

to understand<br />

the health<br />

impacts of PFAS. T h e y<br />

employ various methods, such<br />

as measuring PFAS levels in biological<br />

samples and collaborating with numerous<br />

epidemiologists to develop scalable<br />

solutions for assessing exposure. Had the<br />

precautionary principle, which advocates<br />

that a substance be proven safe before being<br />

released into the market, been integrated<br />

into our regulatory framework, this could<br />

have been a different story. We would not<br />

only foster a culture of prevention rather<br />

than reaction, but also show that public<br />

health and environmental safety take<br />

precedence over economic interests.<br />

The story of PFAS serves as an urgent<br />

call for change and as a stark reminder<br />

of what can happen when scientific<br />

innovation goes unchecked. And this story<br />

is not unique. “Look at pesticides and<br />

DDT; it was only after decades of broad<br />

use without appropriate safety testing<br />

and risk assessment when they were then<br />

phased out,” Ginsberg said. “PFAS is just<br />

one example of us not doing our homework<br />

before releasing chemicals to the market.” ■<br />

EVELYN JIANG<br />

EVELYN JIANG is a sophomore in Morse College majoring in neuroscience. In addition to writing for<br />

the <strong>YSM</strong>, she works at Yale’s Alzheimer’s Disease Research Unit and the Koleske Lab.<br />

THE AUTHOR WOULD LIKE TO THANK Krystal Pollitt and Gary Ginsberg for their time and<br />

enthusiasm in sharing their expertise.<br />

FURTHER READING<br />

Savvaides, T., Koelmel, J. P., Zhou, Y., Lin, E. Z., Stelben, P., Aristizabal-Henao, J. J., Bowden, J. A., & Godri<br />

Pollitt, K. J. (2021). Prevalence and Implications of Per- and Polyfluoroalkyl Substances (PFAS) in Settled<br />

Dust. Current environmental health reports, 8(4), 323–335. https://doi.org/10.1007/s40572-021-00326-4<br />

December 2023 Yale Scientific Magazine 21


FOCUS<br />

Gene Therapy<br />

RIGHT IDEA,<br />

WRONG TARGET?<br />

Gene Therapy For Parkinson's Disease<br />

BY MADELEINE POPOFSKY AND RISHA CHAKRABORTY<br />

ART BY JUNGBIN CHA<br />

22 Yale Scientific Magazine December 2023 www.yalescientific.org


Gene Therapy<br />

FOCUS<br />

Why do treatments fail?<br />

Sometimes there is an issue<br />

with the treatment’s target.<br />

Other times, the translation from an<br />

animal model to humans presents too big<br />

of a gap. Over the history of research on<br />

gene therapy, such failures have brought<br />

scientists closer to success.<br />

The idea behind gene therapy is to treat<br />

genetic diseases at their source by altering<br />

a missing or faulty gene. For Parkinson’s<br />

disease—in which loss of dopamineproducing<br />

(dopaminergic) neurons leads<br />

to slowness of movement and other severe<br />

motor symptoms in late stages—this<br />

approach has shown promise, but success<br />

has, thus far, been out of reach.<br />

Past research on gene therapy had<br />

targeted a part of the basal ganglia—which<br />

is responsible for motor control—called<br />

the striatum. In mouse models, this was<br />

quite successful, and several papers were<br />

published on different genes targeting this<br />

area. One of these papers, published in 1994,<br />

was covered in the Yale Scientific Magazine<br />

by Gautam Mirchandani (Vol. 66 No. 2), who<br />

called it a promising study. The proposed<br />

therapy was designed to target the gene for<br />

tyrosine hydroxylase (TH), an enzyme that<br />

is critical for synthesizing dopamine in a<br />

Parkinson-like disorder. “Hopes are that<br />

such a treatment will soon be available for<br />

human benefit,” Mirchandani wrote. Yet,<br />

these techniques have all since failed.<br />

The problem, in many of these cases, was<br />

actually the target. While easy to target in<br />

a mouse, the basal ganglia in humans has<br />

enlarged dramatically over the course of<br />

evolution. Since the striatum forms such a<br />

large part of the basal ganglia’s structure, it<br />

was simply too large of a target. “It is very<br />

difficult to cover it by injecting a virus,” said<br />

Jim Surmeier, a professor of neuroscience at<br />

Northwestern University Feinberg School of<br />

Medicine. He is one of the many scientists<br />

taking up the task of turning the coal of past<br />

failures into the future diamonds that will<br />

let gene therapy shine. “We fail more often<br />

than we succeed,” Surmeier said. “What<br />

distinguishes really good researchers is the<br />

ability to learn from your failures.”<br />

A New Target?<br />

Surmeier’s research challenges prevailing<br />

theories regarding the function of<br />

dopaminergic neurons and their site of<br />

action in Parkinson’s disease. Previous<br />

researchers had assumed that loss of<br />

dopamine in the striatum was sufficient<br />

to cause the primary motor symptoms<br />

associated with Parkinson’s. However,<br />

Surmeier developed a new animal model<br />

for Parkinson’s that involved<br />

disrupting Complex 1, an<br />

important protein for<br />

energy generation, in<br />

the mitochondria<br />

of dopaminergic<br />

neurons. The<br />

difference in this<br />

model was that,<br />

unlike most<br />

animal models<br />

for Parkinson’s<br />

which cause<br />

rapid onset of<br />

the severe motor<br />

symptoms, this<br />

model more closely<br />

mimicked human<br />

Parkinson’s with its slow<br />

onset. Motor symptoms only became<br />

apparent several months after gene editing.<br />

This more realistic model led to both a new<br />

potential cause of Parkinson’s in humans<br />

and a better lens through which to study<br />

how brain circuits contribute to the disease.<br />

Using this model, Surmeier discovered<br />

something unexpected. “When there was<br />

clear loss of striatal dopamine release, the<br />

animals were not Parkinsonian, contrary<br />

to the prediction of the classical model,”<br />

Surmeier said. His new theory takes into<br />

account the structure of the basal ganglia.<br />

While the striatum is a large complex within<br />

this structure, there are other nuclei—<br />

clusters of neurons that perform a specific<br />

function—modulated by dopaminergic<br />

neurons. One of these, which sits between<br />

the basal ganglia and the rest of the brain,<br />

is the substantia nigra pars reticulata (SNr).<br />

While the traditional model of Parkinson’s<br />

focuses on almost solely treating the<br />

striatum, Surmeier proposed the SNr as<br />

a new target for gene therapy. “The basal<br />

ganglia are organized like a funnel, with the<br />

SNr at the mouth of the funnel. Targeting<br />

the mouth of the funnel is the best way to<br />

control the output of the basal ganglia,”<br />

Surmeier said.<br />

Now armed with a location, Surmeier<br />

needed a gene. In his study published in<br />

Nature in 2021, he targeted aromatic acid<br />

decarboxylase (AADC), a key enzyme that<br />

converts the precursor levodopa into its final<br />

form of dopamine. Levodopa is commonly<br />

used as a treatment for Parkinson’s.<br />

However, its effects wear off with time and<br />

more advanced forms of the disease since<br />

the dopaminergic neurons that<br />

are dying are the primary<br />

producers of AADC.<br />

Thus, over time, the<br />

brain begins to lack<br />

sufficient AADC to<br />

convert levodopa<br />

into dopamine.<br />

In this trial in<br />

mice, Surmeier<br />

was able to use<br />

gene therapy to<br />

give a new group<br />

of neurons the<br />

ability to express<br />

A A D C — t h o s e<br />

in the SNr—which<br />

relieved motor deficits in<br />

Parkinsonian mice.<br />

Throughout the process, Surmeier<br />

emphasized that one has to be willing to<br />

both challenge past assumptions and learn<br />

from past failures. When he first received<br />

the data from his new Parkinsonian model,<br />

Surmeier was skeptical enough to ask<br />

others to repeat similar experiments, again<br />

and again, when his results did not match<br />

preconceived notions. “In science, we never<br />

have truth in our hands,” Surmeir said. “It is<br />

always an approximation.”<br />

Yet Another Target?<br />

Surmeier’s work is only the tip of the<br />

iceberg when it comes to developing<br />

gene therapies for previously intractable<br />

diseases. His successful process of choosing<br />

just the right nucleus for targeting, and just<br />

the right enzyme to target for modification,<br />

is the result of not just personal failures, but<br />

also the failures, and successes, of many of<br />

his colleagues.<br />

One such colleague is Krzysztof<br />

Bankiewicz at the Ohio State College of<br />

Medicine. Bankiewicz has been interested in<br />

dopamine and Parkinson’s disease since the<br />

1980s, when he joined one of the first clinical<br />

trials to restore normal dopamine levels in<br />

the brain to reverse Parkinsonian symptoms.<br />

The clinical trial intended to transplant<br />

cells that could produce dopamine into the<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 23


FOCUS<br />

Gene Therapy<br />

Striatum<br />

Basal ganglia<br />

Substancia nigra<br />

pars reticulata<br />

striatum. But despite trying many stem and<br />

fetal cell lines, many dopaminergic cells did<br />

not survive the transplantation process. It<br />

did not seem like cell transplantation was<br />

going to work.<br />

The advent of gene therapy, where a<br />

clinician can change just one gene at a time<br />

as opposed to transplanting entire new cell<br />

lines, was exciting to Bankiewicz. He began<br />

studying specific gene-delivery systems<br />

and experimenting with different targets in<br />

the brain for the delivery of enzymes that<br />

could convert levodopa into dopamine.<br />

He also tried many variations of the viral<br />

vector, which is used to deliver a properly<br />

functioning copy of a gene in gene therapy.<br />

After twenty years of repeated failure and<br />

learning, he has managed to launch clinical<br />

trials intended to deliver genes of interest<br />

to treat many neurodegenerative diseases,<br />

such as pediatric Parkinson’s disease. He<br />

looks at commonalities between diseases<br />

to figure out the best way to approach<br />

new ones. “In this way, the disease itself<br />

becomes more of an application for the<br />

operating systemsystem," Bankiewicz<br />

said. The operating system is the common<br />

pipeline that enables him to optimize a<br />

gene therapy’s chance of clinical success.<br />

Bankiewicz is currently trying to develop<br />

gene therapies for neurotrophic factors,<br />

which are proteins in the brain that support<br />

the development and maintenance of<br />

neurons (since neuronal damage and death<br />

characterizes various dementias). He has<br />

worked on increasing the production of the<br />

protective brain-derived neurotrophic factor<br />

to the entorhinal cortex, a key memory<br />

center in the brain, to slow and possibly even<br />

reverse memory loss in Alzheimer’s disease.<br />

He is currently working on a trial to increase<br />

the production of glial-derived neurotrophic<br />

factor that promotes dopaminergic neuron<br />

survival, which may ameliorate Parkinson’s<br />

disease symptoms. He says<br />

that there are other diseases<br />

to address through the<br />

neurotrophic factor pathway,<br />

including Huntington’s disease<br />

and childhood dementias.<br />

Bankiewicz’s theory also<br />

supports the development of various gene<br />

therapies to reduce and replace proteins<br />

that misfold and aggregate in various<br />

neurodegenerative diseases. For example,<br />

he is currently working on a trial to reduce<br />

levels of alpha-synuclein, which accumulates<br />

in Parkinson’s disease and multiple system<br />

atrophy, and is interested in developing a<br />

trial to replace the protein progranulin which<br />

leads to amyloid protein accumulation in<br />

patients with fronto-temporal dementia.<br />

Bankiewicz’s research is especially<br />

important because gene therapy can be a<br />

highly effective treatment that works for most<br />

patients, regardless of their disease etiology.<br />

This means that it does not matter whether a<br />

patient has a genetic cause for their disease<br />

or if their disease is idiopathic (unknown<br />

cause). For example, when patients are<br />

given levodopa, the drug addresses their<br />

symptoms regardless of the cause of their<br />

ABOUT THE<br />

AUTHORS<br />

Parkinson’s disease. Similarly, gene therapy<br />

addresses common disease pathology, such<br />

as loss of dopaminergic neurons or levodopa<br />

resistance in Parkinson’s disease, regardless of<br />

whether it is driven by idiopathic or familial<br />

factors. This means it has a higher chance of<br />

working across patient populations.<br />

Moreover, gene therapy is a one-time<br />

surgical treatment, which is clinically<br />

preferable for patients, whose alternatives are<br />

either to live with a deep-brain stimulation<br />

electrode within their head, spend the<br />

rest of their life taking a medication that<br />

progressively loses its effectiveness, or<br />

let their disease continually advance.<br />

Bankiewicz stated that his patients feel safe<br />

undergoing the treatment, knowing that<br />

its effects are very localized. “They love the<br />

idea of just getting one therapeutic for life,”<br />

Bankiewicz said.<br />

This field has made significant leaps since<br />

<strong>YSM</strong> last reported on the 1994 study on gene<br />

therapy. Bankiewicz’s and Surmeier’s clinical<br />

trials may bring treatment to hundreds of<br />

thousands of people who would otherwise<br />

live without the hope of recovering from<br />

or surviving their disease. Yet all this would<br />

not have been possible without countless<br />

mistakes. If Bankiewicz has learned one<br />

thing along the way, it is that scientists are<br />

hardly right every single time. “One lesson<br />

that I tell my students and scientists: don’t<br />

be afraid to try. You learn from your failures.<br />

So, don’t be afraid to fail,” he said. ■<br />

MADELEINE POPOFSKY<br />

RISHA CHAKRABORTY<br />

MADELEINE POPOFSKY is a sophomore Neuroscience major in Pauli Murray College. In addition to<br />

writing and doing graphic design for <strong>YSM</strong>, she debates in the Yale Debate Association, directs visual arts<br />

for Hippo Magazine, and volunteers for JDRF.<br />

RISHA CHAKRABORTY is a third-year Neuroscience and Chemistry major in Saybrook College. In<br />

addition to writing for <strong>YSM</strong>, Risha plays trumpet for the Yale Precision Marching Band and La Orquesta<br />

Tertulia, volunteers at YNHH, and researches Parkinson’s disease at the Chandra Lab.<br />

THE AUTHORS WOULD LIKE TO THANK Dr. Jim Surmeier and Dr. Krzysztof Bankiewicz for their time<br />

and enthusiasm for their research.<br />

FURTHER READING:<br />

González-Rodríguez, Patricia, et al. “Disruption of Mitochondrial Complex I Induces Progressive<br />

Parkinsonism.” Nature, 3 Nov. 2021, pp. 1–7, www.nature.com/articles/s41586-021-04059-0.<br />

Pearson, Toni S., et al. “Gene Therapy for Aromatic L-Amino Acid Decarboxylase Deficiency by MR-<br />

Guided Direct Delivery of AAV2-AADC to Midbrain Dopaminergic Neurons.” Nature Communications,<br />

vol. 12, no. 1, 12 July 2021, p. 4251, www.nature.com/articles/s41467-021-24524-8.<br />

Christine CW, Richardson RM, Van Laar AD, Thompson ME, Fine EM, Khwaja OS, Li C, Liang GS, Meier<br />

A, Roberts EW, Pfau ML, Rodman JR, Bankiewicz KS, Larson PS. Safety of AADC Gene Therapy for<br />

Moderately Advanced Parkinson Disease: Three-Year Outcomes From the PD-1101 Trial. Neurology.<br />

2022 Jan 4;98(1)<br />

24 Yale Scientific Magazine December 2023 www.yalescientific.org


FASTER THAN<br />

Physics<br />

FEATURE<br />

LIGHTSPEED<br />

THESE NEUTRINOS WERE FASTER THAN THE SPEED OF LIGHT—<br />

UNTIL THEY WEREN’T<br />

Physics-bending findings. Irreproducible results. In 2011,<br />

news of neutrinos, neutral particles with infinitesimal<br />

mass, traveling faster than the speed of light topped science<br />

headlines, prompting widespread debate about the truth of these<br />

findings. The debate stemmed from the fact that Einstein’s theory<br />

of special relativity says nothing can travel faster than light. But the<br />

Oscillation Project with Emulsion-tRacking Apparatus (OPERA)<br />

experiment at the underground Gran Sasso Lab (LNGS), had<br />

measured the velocity of neutrinos to be 0.0024 percent faster than<br />

lightspeed, contradicting Einstein. If OPERA’s results were true, a<br />

core theory of physics would be shaken.<br />

The premise of this measurement was simple: send a beam of<br />

neutrinos 730 kilometers from the European Organization for<br />

Nuclear Research (CERN) to the OPERA detector at LNGS and<br />

measure their time of flight. Yet, OPERA’s primary goal was not<br />

to measure neutrinos’ speed. The researchers conducted the<br />

additional measurement because OPERA was well suited to<br />

accurately determine neutrino velocity. The OPERA experiment<br />

had primarily been designed to test the phenomenon of neutrino<br />

oscillations, which occur when neutrinos oscillate between three<br />

known “flavors”: electron, muon, and tau. Located at the LNGS, the<br />

OPERA system aimed to be the first to detect the<br />

appearance of tau-neutrinos from the oscillation of<br />

muon-neutrinos during the 2.4-millisecond trip<br />

from CERN to Gran Sasso.<br />

The researchers exhaustively checked every part of<br />

the experiment that could have caused the unexpectedly<br />

fast neutrino speed. They debated whether the research<br />

should be made public. Some didn’t think the checks and<br />

tests on the equipment and experimental methods had<br />

been exhaustive enough. “I was skeptical—almost sure<br />

it was wrong,” said Laura Patrizii, a member of<br />

the OPERA Collaboration. Putting it to<br />

a vote, the researchers who pushed<br />

for sharing their potentially<br />

revolutionary findings won out.<br />

However, since many<br />

working on the project<br />

maintained that something had<br />

gone wrong, the Collaboration<br />

www.yalescientific.org<br />

BACKGROUND IMAGE COURTESY OF BERKELEY LAB<br />

BY GENEVIEVE KIM<br />

didn’t submit for publication in a scientific journal and instead posted<br />

to arXiv.org, a non-peer-reviewed open-access archive. Meanwhile,<br />

the OPERA researchers continued to investigate still-unknown<br />

systematic effects that could explain the anomalous result.<br />

“Exceptional results require exceptional checks,” Patrizii<br />

said, paraphrasing Carl Sagan, astronomer and famous science<br />

communicator. OPERA’s error-searching efforts proceeded in tandem<br />

with labs across the world that tried to replicate the results—to no avail.<br />

Other research groups noted that if the neutrinos were truly traveling<br />

at light-surpassing speed, they should have also been releasing energy.<br />

But no trace of this energy was seen in the experiment, increasing doubt<br />

about the measurements.<br />

In 2012, OPERA finally disproved its own findings. The Collaboration<br />

found that there were two sources of error that had caused the observed<br />

relativity-defying speed. First, a connector measuring the time delay<br />

from a GPS receiver to the OPERA Master Clock was faulty, and<br />

second, the frequency of the Master Clock was out of specification. The<br />

researchers had calibrated the connector when it was securely plugged<br />

in, but during the experiment it had been partially disconnected,<br />

resulting in a distortion and delay of the signal. After the time delay was<br />

calculated and accounted for, the neutrino interactions with OPERA<br />

lagged by sixty nanoseconds. The neutrinos hadn’t actually traveled<br />

faster than the speed of light—the timing itself was incorrect. The search<br />

for an explanation was finally over.<br />

In 2014 and 2015, OPERA papers shared the neutrino oscillation<br />

data. Like all other findings from CERN, they underwent multiple<br />

reviews and screenings before being released to the public. Today,<br />

the common worldwide policy for peer review even bans graduate<br />

students conducting research at CERN from including figures made<br />

for their own research in any university papers if the figures involve<br />

CERN projects that have not been finalized. Any results they do share<br />

from a non-finalized project leave CERN marked as “preliminary.”<br />

This rigorous peer-review process reflects how the scientific process<br />

preserves scientists’ credibility, just as researchers around the world<br />

constructively critiqued the neutrino speed findings.<br />

“The ‘case’ of superluminal neutrinos is frequently referenced as an<br />

example of how science operates, highlighting the effectiveness of the<br />

scientific method and its provando e riprovando (trying and trying again)<br />

approach,” Patrizii said. “Science is not a belief system; it operates without<br />

dogma.” The researchers’ desire to ensure their findings’ validity, even<br />

if it would negate what would otherwise be a groundbreaking finding,<br />

shows the scientific community’s dedication to better understanding the<br />

universe. This case of the too-fast neutrinos, rather than being a scientific<br />

failure, was actually an example of the success of the scientific process. ■<br />

December 2023 Yale Scientific Magazine 25


FEATURE<br />

Oceanography<br />

SEAWATER<br />

SQUABBLES<br />

BY BRANDON NGO<br />

OVERTURNING A 130-YEAR-<br />

OLD ASSUMPTION IN<br />

SEAWATER CHEMISTRY<br />

ART BY ANNA OLSZOWKA<br />

Look back on the beaches you’ve been to in the past<br />

decade. The serene sand, the soothing warmth of the<br />

sun, and most importantly, the refreshing splashes of the<br />

ocean waves. That same seawater may have contributed to a<br />

recent study that has overturned years of research. For over a<br />

century, scientists believed that charged particles, called ions,<br />

in seawater remained in relatively similar ratios across the<br />

ocean. However, a group of researchers have debunked this<br />

assumption, leading to concerns about the accuracy of past<br />

seawater studies that depended on it.<br />

Mario Lebrato, a station manager and chief scientist at the<br />

Bazaruto Center for Scientific Studies in Mozambique, led<br />

the team that challenged this assumption about seawater ion<br />

proportions. Interestingly, the original intent of their study wasn’t<br />

to test this assumption. “Originally, we were trying to understand<br />

how plankton grew in different seawater conditions,” Lebrato<br />

said. His research team organized seawater samples from different<br />

parts of the world to analyze plankton growth. After measuring<br />

the composition of a few samples, Lebrato noticed significant<br />

differences in ion proportions between seawater from different<br />

sources. “This really triggered the project,” he said.<br />

“It all started with the question of: why are these waters so<br />

different in terms of oceanic versus coastal?” Lebrato said. To<br />

further their investigation, his team organized partnerships with<br />

international universities, governments, and environmental<br />

agencies over seven years. They knew it would be hard to<br />

collect seawater samples worldwide without outside assistance<br />

or substantial funding. “It’s almost impossible for anybody to<br />

organize over a hundred research cruises,” Lebrato said. These<br />

partnerships ranged from organizations like the United States<br />

National Oceanic and Atmospheric Administration (NOAA) and<br />

Environment Canada, to small research cruises and individual<br />

scientists. Lebrato even received help from organizations that<br />

ventured into the Arctic Circle to retrieve seawater samples.<br />

At the end of their seven-year project, Lebrato’s team concluded<br />

that the original assumption about ion proportions in seawater<br />

was incorrect. According to Lebrato’s research, there were<br />

significant deviations in major seawater ion ratios between<br />

samples, specifically in the open ocean. “Everybody knew it was<br />

expected to find deviations from the coast, deviations near the<br />

rivers, and deviations in the poles near the ice. But nobody was<br />

expecting significant deviations on the open ocean,” Lebrato said.<br />

Upon discovering this flaw in this then-long-standing<br />

assumption on seawater ion ratios, Lebrato was initially worried<br />

about the international reaction to his team’s research. “I was prestressed<br />

because I was like, okay, maybe we’re doing something<br />

wrong,” Lebrato said. In the final stages of the research project,<br />

Lebrato’s team rechecked all of the data with the owners of the<br />

labs, ensuring the results were consistent. They remeasured<br />

open ocean samples up to five times to validate their results.<br />

After the researchers published the project, the international<br />

science community accepted the discovery. Lebrato was<br />

especially pleased with these results.<br />

However, Lebrato’s group of researchers could not pinpoint all<br />

of the exact causes for these deviations in ion ratios. It’s possible<br />

that ocean and earth processes—such as weathering, evaporation,<br />

particle movement from ocean waves, and ion production from<br />

sea animals—contribute to these variances in the ion ratios of<br />

seawater. However, it is difficult to isolate the exact reasoning<br />

without further work. “The research basically opened a Pandora’s<br />

box for people to start revising the topic and doing experiments<br />

on it,” Lebrato said. After their paper was published, a wave of<br />

research proposals formed, with some looking to explore the<br />

cause of these varying ion ratios. Other research proposals looked<br />

to reevaluate the accuracy of past papers that relied on the nowoverturned<br />

assumption.<br />

It’s important to keep in mind that overturning assumptions<br />

is necessary in scientific research and isn’t a way to target other<br />

researchers. “We’re not pointing fingers at anybody,” Lebrato<br />

said. Instead, by debunking this assumption, new research<br />

opportunities have arisen to further investigate ocean chemistry.<br />

Revising and experimenting with these assumptions is a natural<br />

part of the research process and plays a crucial role in maintaining<br />

accuracy in the vast expanses of scientific literature. ■<br />

26 Yale Scientific Magazine December 2023 www.yalescientific.org


Chemistry<br />

FEATURE<br />

THIS METAL-FREE REACTION<br />

CONTAINS . . . METAL<br />

Eliminating Palladium from the Suzuki Reaction<br />

BY LAWRENCE ZHAO<br />

It was the right time for a breakthrough, but was it too good<br />

to be true? In early 2021, a research group led by Professor<br />

Hua-Jian Xu at the Hefei University of Technology claimed<br />

to have found a new, nitrogen-based catalyst for the Suzuki<br />

reaction. The Suzuki reaction is a popular method among<br />

organic chemists to create new bonds between two carbon<br />

atoms, and in the past, it has always involved a palladium<br />

catalyst—a substance that speeds up a chemical reaction.<br />

However, researchers want to stop using palladium because<br />

the metal is toxic, difficult to recycle, and expensive, which<br />

limits their ability to use the Suzuki reaction to synthesize<br />

compounds in industry. Since 2003, scientists have promised<br />

a metal-free Suzuki reaction, but each time, they’ve found<br />

evidence of palladium contamination in their attempts. Mere<br />

traces of palladium on a dirty stir bar could be enough to start a<br />

Suzuki reaction, so researchers must be extra careful that there’s<br />

no palladium at all.<br />

So, when the scientific community heard about Xu’s claims<br />

of a palladium-free Suzuki reaction, they were immediately<br />

skeptical. Although the Xu group included safeguards to avoid<br />

palladium contamination, scientists on X (formerly Twitter)<br />

quickly pointed out that Xu had used a palladium compound<br />

to make their Suzuki catalyst. Could palladium have somehow<br />

snuck into Xu’s experiment, just like his predecessors’?<br />

Chemistry professor Robin Bedford at the University of Bristol<br />

has been working with catalysts for over 30 years. “I was one<br />

hundred percent confident that it was palladium-catalyzed,<br />

and I needed [more evidence] to be shifted from that position,”<br />

Bedford said.<br />

Bedford contacted other scientists who had doubted Xu’s<br />

work on social media and asked if they would join him in<br />

investigating his hunch that palladium contamination was at<br />

fault. After assembling a team of investigators, Bedford tried to<br />

figure out what might have gone wrong. To Bedford’s surprise,<br />

everything Xu did was reproducible to a remarkable degree—<br />

the numbers were within one to two percent of reported values,<br />

which is an unusual feat for synthetic chemistry. However, the<br />

main issue lay in what Xu didn’t do—a control experiment that<br />

created the catalyst without using palladium. When Bedford<br />

used a different, palladium-free route to make Xu’s catalyst, the<br />

catalyst no longer worked as advertised. Bedford did further<br />

testing which revealed that the metal was hiding in plain sight.<br />

ART BY KARA TAO<br />

Pd 3+<br />

It turned out that palladium had nestled itself<br />

in a stable compound that made it challenging<br />

to detect. Xu used a process that was unable to<br />

extract the palladium from these compounds,<br />

leading him to believe there wasn’t any<br />

palladium in the catalyst. However, when<br />

Bedford and his collaborators subjected it<br />

to hot, concentrated acid, the metal broke<br />

free. Unfortunately, Xu’s palladiumfree<br />

Suzuki coupling wasn’t so<br />

palladium-free after all. Nine<br />

months after Xu’s initial<br />

announcement, Nature<br />

Catalysis published<br />

the concerns that<br />

researchers like Bedford<br />

had voiced. In response<br />

to growing doubt, Xu<br />

swiftly retracted his paper.<br />

Although Xu failed to make a<br />

metal-free Suzuki reaction, his story is actually<br />

an example of success in the scientific method. “The scientific<br />

method is predicated on failure,” Bedford said. Science tends to<br />

fall in line with existing beliefs, but Xu pushed the boundary<br />

of what was conventionally thought to be possible. Because Xu<br />

had to retract his work, the research may seem to be, at first<br />

glance, reprehensible. In reality, his effort to expand the breadth<br />

of human knowledge is admirable. Retractions carry a negative<br />

stigma in the scientific community because they often arise<br />

from papers with manipulated data. To encourage scientists to<br />

retract papers with errors made in good faith, Bedford suggests<br />

creating a separate distinction for papers like Xu’s.<br />

Bedford continues to search for new sustainable pathways<br />

to synthesize organic molecules. He is currently in the midst<br />

of publishing a proof-of-concept of an iron-catalyzed Suzuki<br />

coupling. Backed by almost 400 pages of data, Bedford’s<br />

efforts underscore just how difficult it has been to eliminate<br />

palladium from the Suzuki reaction. While his work may not<br />

be more efficient than currently available procedures, it’s a big<br />

step towards replacing palladium once and for all. One day,<br />

we might be able to cheaply make life-saving pharmaceuticals<br />

using a metal-free Suzuki reaction. ■<br />

Zn 2+<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 27


FEATURE<br />

Special Profile<br />

FROM<br />

“NOT GOOD ENOUGH”<br />

TO NOBEL PRIZE WINNER<br />

KATALIN KARIKÓ'S PERSISTENT JOURNEY TO DEVELOPING THE MRNA VACCINE<br />

BY ANNLI ZHU & MICHAEL SARULLO | ART BY LUNA AGUILAR<br />

Early in her career, Katalin Karikó<br />

was confronted with a dilemma.<br />

As a researcher at the University<br />

of Pennsylvania, she had struggled to<br />

secure grant money and was faced with an<br />

ultimatum: either leave the university and<br />

abandon any hopes of becoming a tenured<br />

faculty member, or receive a demotion,<br />

setting her career back by years. It seemed<br />

that Karikó’s deep interest in mRNA would<br />

soon see its end. What followed, instead, is<br />

a story of incredible persistence, dedication,<br />

and brilliance.<br />

Beginning in the 1960s, scientists had<br />

connected the dots of DNA’s role in protein<br />

synthesis—the process responsible for almost<br />

all cellular functions—and mRNA was the<br />

critical missing piece. Short for messenger<br />

RNA, this helical strand of molecules<br />

represents DNA in a portable manner,<br />

allowing for information from the nucleus of<br />

the cell to be delivered to ribosomes where<br />

protein synthesis can occur.<br />

By the 1970s, the concept of synthetic<br />

mRNA—custom-created in the lab and<br />

introduced into the cells of patients—created<br />

the prospect of initiating healing processes<br />

from within cells. Immediately, the possible<br />

range of applications seemed endless: could<br />

mRNA revolutionize vaccine development<br />

by prompting cells to produce key antibodies<br />

against convoluted viral infections? Could<br />

mRNA therapy enhance the immune system’s<br />

abilities to detect and eliminate cancerous<br />

cells? Karikó’s fascination with the potential<br />

of mRNA therapy inspired her life’s research<br />

within the field, making the University<br />

of Pennsylvania’s disregard of her work<br />

absolutely crushing. To better understand<br />

why, we must start from the beginning.<br />

Katalin Karikó’s career in science began at<br />

the University of Szeged in her native Hungary,<br />

where she first learned about viruses and<br />

mRNA. There, she found herself surrounded<br />

by peers who seemed more academically<br />

prepared, whether more experienced in the<br />

lab or more fluent in English. In her recently<br />

published autobiography, Breaking Through:<br />

My Life in Science, Karikó reflects on her<br />

time at university and playing catch-up with<br />

her peers. “If I have any superpower, it has<br />

always been this: a willingness to work hard<br />

and methodically, and refuse to stop,” she<br />

wrote. This superpower would prove to be<br />

indispensable throughout her life.<br />

In 1985, the company that had funded<br />

Karikó’s postdoctoral research terminated<br />

her role. Following many fruitless attempts<br />

to secure a funded position across Europe,<br />

Karikó finally found an opportunity to<br />

continue her research at Temple University<br />

in Philadelphia. She arrived in America with<br />

her husband, her daughter, and $1,200 in<br />

cash sewn into the stuffing of her daughter’s<br />

teddy bear.<br />

While Karikó’s work was going well, her<br />

supervisor proved to be hostile, threatening<br />

to revoke her visa if she left his lab. But<br />

Karikó was determined to stay in America,<br />

and where there’s a will, there’s a way. In<br />

1989, she found a position in the cardiology<br />

clinic at the University of Pennsylvania’s<br />

medical school as a biochemist surrounded<br />

by doctors. “Working among MDs [gave<br />

me] the thing I valued most: a chance to<br />

learn,” Karikó wrote. “Besides, when hadn’t<br />

I been a fish out of water?”<br />

At first, her experience at UPenn was<br />

very positive. Alongside her boss, Dr. Elliot<br />

Barnathan, Karikó worked on using mRNA<br />

to deliver proteins that would reduce the<br />

risk of blood clots in target areas, and<br />

she became even more convinced of the<br />

potential of her research.<br />

28 Yale Scientific Magazine December 2023 www.yalescientific.org


Special Profile<br />

FEATURE<br />

IMAGE COURTESY OF WIKIPEDIA COMMONS<br />

Mural of Karikó located in Budapest, Hungary.<br />

Unfortunately, this conviction was not<br />

shared by many. A critical metric for scientific<br />

success was—and still is—attracting funding,<br />

and Karikó had been repeatedly rejected by<br />

grants that deemed her research too risky and<br />

slow. “I published more slowly than others,”<br />

she explained. “I didn’t want my scientific<br />

papers to be rushed. I didn’t want to be so<br />

eager to publish that I risked contaminating<br />

the scientific literature with dubious results.”<br />

Karikó found UPenn to be increasingly<br />

impatient with her lack of funding and as a<br />

result, dismissive of her work. “I was learning<br />

that succeeding at a research institution like<br />

Penn required skills that had little to do with<br />

science,” she wrote. “You needed the ability to<br />

sell yourself and your work.”<br />

In January 1995, Karikó was diagnosed<br />

with breast cancer. Soon after, her husband<br />

was forced to stay in Hungary due to visa<br />

complications. This time also marked five<br />

years since she joined UPenn, and per<br />

university policy, she must either be demoted<br />

or leave. Faced with a difficult decision at one<br />

of the most difficult points in her life, Karikó<br />

nonetheless stayed true to her scientific<br />

calling, taking the demotion in order to<br />

continue her mRNA research.<br />

Two years later, Karikó met Dr. Drew<br />

Weissman, an immunologist who had just<br />

joined the university. Weissman was interested<br />

in vaccines, and Karikó had just the expertise<br />

he needed to deliver antigens—molecules<br />

that trigger an immune response against<br />

viruses—with mRNA. The pair discovered<br />

that, by slightly altering one base nucleotide,<br />

they could safely administer mRNA without<br />

causing a negative inflammatory reaction.<br />

When combined with Karikó’s previous work<br />

on mRNA delivery, the team had the final<br />

piece of the puzzle.<br />

The pair excitedly submitted their mRNA<br />

vaccine research to Nature—but their paper<br />

was rejected as merely an “incremental<br />

contribution.” When they finally convinced<br />

another journal to publish their work, it<br />

gained little attention.<br />

Meanwhile, UPenn was again getting<br />

impatient, citing Karikó’s continued inability<br />

to secure funding. “[All they cared about<br />

was] dollars per net square footage,” she<br />

wrote. “The fact was, I barely cost this<br />

department anything… my salary was<br />

laughable compared with the neurosurgeons<br />

who surrounded me… I had no staff, no<br />

postdocs… I wasn’t even a faculty member!”<br />

When she appealed for her faculty position<br />

to be reinstated, the department responded<br />

that she was “not of faculty quality.”<br />

Fortunately, with their research finally<br />

published, Karikó and Weissman’s<br />

mRNA vaccines were recognized by a<br />

few. Realizing that UPenn was not going<br />

to support their work, the pair licensed<br />

their technology to the then-little-known<br />

BioNTech, where Karikó assumed the<br />

role of vice president in 2013. Working in<br />

industry was refreshing, Karikó explained.<br />

“It didn’t matter whether you spoke with<br />

an accent, or whether you’d attended an<br />

“It didn’t matter whether you spoke with an<br />

accent, or whether you’d attended an Ivy League<br />

school, or if you were good at schmoozing.”<br />

Science was science.<br />

Ivy League school, or if you were good<br />

at schmoozing.” Science was science.<br />

Then, in early 2020, all eyes turned<br />

towards the novel coronavirus. Suddenly,<br />

vaccine development was required at<br />

an unprecedented scale and speed, and<br />

BioNTech was at the forefront. The Pfizer-<br />

BioNTech vaccine’s phase III trials came<br />

back successful within a year, making<br />

Karikó a hero. After decades of obstacles,<br />

threats of deportation, demotions, and<br />

rejections, her superpower—a fierce belief<br />

in her research and refusal to stop at any<br />

cost—finally helped her realize her dream.<br />

On October 2, 2023, Katalin Karikó and<br />

Drew Weissman were awarded the Nobel<br />

Prize in Physiology or Medicine for their<br />

work on mRNA vaccines.<br />

UPenn immediately acknowledged<br />

Karikó’s and Weissman's Nobel Prize,<br />

coining them “Penn's historic mRNA<br />

vaccine research team” in a social media<br />

post (later marked as “misleading” due to<br />

Karikó’s lack of affiliation with the university<br />

over the past decade), accompanied by a<br />

press release that failed to mention Karikó’s<br />

difficult history with the university. The<br />

post drew criticism from prominent<br />

members of the medical and scientific<br />

communities. One assistant professor<br />

from Stevenson University commented,<br />

“A woman winning the Nobel Prize for the<br />

same work Penn called ‘not faculty quality’<br />

& Penn CLAIMING CREDIT is exactly<br />

how misogyny in academia works.”<br />

Indeed, Karikó’s journey underlines<br />

prominent issues in academia. UPenn’s<br />

self-congratulatory post highlights their<br />

attempt to mask their poor treatment<br />

and lack of support, while exemplifying<br />

the institutional desire to prioritize profit<br />

over genuine, innovative research. Finally,<br />

Karikó’s narrative serves as an important<br />

reminder of the repeated undervaluation<br />

of women’s work in science. While Karikó’s<br />

story is one of triumph, it is important to<br />

call attention to the many shortcomings<br />

present in academia and to create an<br />

environment supportive of scientific<br />

innovation. In Karikó’s words:<br />

“We can do better. Science, at its best, is<br />

about asking questions, trying things, and<br />

going wherever that inquiry takes you. It<br />

requires walking into the unknown—the<br />

unknown is the very point!” ■<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 29


FEATURE<br />

Astronomy<br />

BY WILLIAM ARCHACKI<br />

ART BY JUNGBIN CHA<br />

PROVOCATIVE BIOSIGNATURE DATA CREATES ASTRONOMICAL DISCORD<br />

The story goes that Isaac Newton was<br />

contemplating the orbit of the Moon<br />

when an apple fell on his head, and—<br />

eureka! His theory of universal gravitation<br />

was born. Historians say this story about the<br />

apple is dubious, but it’s still woven into the<br />

mythos of science because it illustrates how<br />

an unexpected observation can transform<br />

the way scientists understand an idea. A<br />

surprising insight, and presto, new science—<br />

it sure worked in Newton’s time.<br />

So now imagine you’re Jane Greaves, a<br />

planetary astronomer at Cardiff University<br />

in Wales, and after eighteen months of<br />

crunching data from observations made<br />

in June 2017 on the James Clerk Maxwell<br />

Telescope in Hawai‘i, you’ve convinced<br />

yourself of the impossible—that you and<br />

your team have detected a signature of life<br />

emanating from the warm clouds of Earth’s<br />

seemingly desolate neighbor Venus. Finding<br />

alien life might be as<br />

simple as looking<br />

next door. The apple<br />

has fallen. What<br />

comes next?<br />

As indicators of<br />

life go, this signal<br />

from Venus was about as good as it gets.<br />

Greaves and her colleagues had detected<br />

a relatively small concentration of the<br />

gas phosphine, which is a molecule made<br />

of a phosphorus atom bonded to three<br />

hydrogen atoms. Astrobiologists call it a<br />

“biosignature gas.” With limited exceptions,<br />

it is only produced by life. On Earth,<br />

anaerobic bacteria that live underwater<br />

are the only organisms known to partake<br />

in the strange and challenging chemistry<br />

required to produce something as peculiar<br />

as phosphine. And scientists in labs aren’t<br />

much better: there is no known chemical<br />

mechanism by which phosphine can be<br />

produced without temperatures far more<br />

extreme than those found on Earth and<br />

Venus. If the phosphine in the atmosphere<br />

of Earth can only be created through life, is<br />

the same true on Venus?<br />

Encouraged by the results of their first<br />

observation, Greaves and her colleagues<br />

wasted no time to observe the Venusian<br />

atmosphere again with a more advanced<br />

telescope in March 2019. This time, they<br />

used the Atacama Large Millimeter Array<br />

radio telescope (ALMA) in Chile. Like the<br />

first telescope, ALMA recorded the intensity<br />

of radiation coming from Venus at different<br />

frequencies and performed a complex<br />

series of calculations to produce data that<br />

scientists could interpret, like a fingerprint<br />

for the concentrations of various gases. Once<br />

again, Greaves and her colleagues calculated<br />

a statistically significant concentration of<br />

phosphine in the Venusian atmosphere:<br />

about twenty molecules per billion located<br />

kilometers above the planet’s surface in its<br />

thick clouds. And since phosphine breaks<br />

down under the conditions of<br />

the Venusian atmosphere,<br />

the team calculated that<br />

a constant influx of<br />

new phosphine into the<br />

atmosphere would<br />

be necessary for<br />

them to detect this.<br />

Data in hand,<br />

Greaves and her<br />

colleagues had quite the<br />

paper to write. They<br />

had to explain to the<br />

scientific community<br />

that they had detected<br />

something that was<br />

either at odds with our modern knowledge<br />

of chemistry or evidence of alien life. In<br />

September 2020, they published their paper<br />

in the journal Nature Astronomy. In a press<br />

briefing for the Royal Astronomical Society,<br />

Greaves and three of her coauthors presented<br />

slides that cautiously broke their news. One<br />

slide reads, “We are claiming that we have<br />

detected phosphine gas whose existence is a<br />

mystery: either new chemistry or possibly life<br />

production.” News outlets boasted headlines<br />

about the possibility of life on Venus,<br />

gently noting the possibility of unknown<br />

chemistry. But then in July 2021 came a<br />

shock. In the same journal, a different<br />

group of researchers responded with their<br />

own paper, brutally blunt in its title: “No<br />

evidence of phosphine in the atmosphere of<br />

Venus from independent analyses.”<br />

30 Yale Scientific Magazine December 2023 www.yalescientific.org


Astronomy<br />

FEATURE<br />

“It felt pretty bad, on a<br />

personal level,” Greaves<br />

said in a recent<br />

interview, reflecting<br />

on the scientific<br />

controversy that<br />

followed the response<br />

paper. The response<br />

paper shrouded their<br />

original publication<br />

in questions of scientific<br />

validity and academic rigor.<br />

“There was anxiety, in case we<br />

had made a genuine mistake—but the<br />

critics had not involved us in any collegial<br />

discussion before publishing their critique,”<br />

Greaves said.<br />

The response paper opposed the original<br />

work on several fronts. First, the authors<br />

pointed out that the staff at ALMA had<br />

made an obscure but impactful mistake<br />

in their own data processing procedure<br />

before passing the data on to Greaves and<br />

her colleagues for their analyses. This<br />

mistake was corrected, as were two other<br />

small mistakes that the telescope staff<br />

discovered following an investigation, but<br />

it was not a fatal blow to Greaves’ paper—<br />

the signal was still there after adjusting<br />

the data. The bigger problem was that<br />

the response paper made the dramatic<br />

accusation of data misinterpretation. The<br />

signal, these authors claimed, came from a<br />

contaminant, not phosphine.<br />

The distinct frequency of radiation that<br />

phosphine absorbs—the missing frequency in<br />

radiation from the atmosphere of Venus that<br />

alerted Greaves to phosphine’s presence—is<br />

close to the frequency associated with sulfur<br />

dioxide. Through their own calculations and<br />

analyses, the authors of the response paper<br />

argued that the signal Greaves picked up on<br />

was actually from sulfur dioxide.<br />

But wait!—Greaves and her colleagues<br />

said in a third paper published in the<br />

same journal. Greaves’ team had already<br />

considered this kind of contamination and<br />

ruled it out. “We looked at the criticisms and<br />

found (in most cases) the critics hadn’t read<br />

the long supplement to our discovery paper,<br />

where we had already tested and answered<br />

the things they thought we’d done wrong,”<br />

Greaves said. The group reiterated their point<br />

from the first<br />

paper—there<br />

is indeed<br />

p h o s p h i n e<br />

on Venus—and they<br />

recalculated their<br />

estimates for the<br />

concentration of<br />

phosphine based on<br />

the now-corrected<br />

ALMA data. Even after<br />

the revisions, it remains<br />

possible that phosphine is<br />

being actively generated on<br />

Venus by some as-of-yet unknown<br />

mechanism. “I’d love it to be life, but other<br />

origins would be cool too,” Greaves said of<br />

the updated findings.<br />

Greaves noted that the scrutiny<br />

surrounding her group’s work extended<br />

beyond just the response paper published in<br />

2021. Some astronomers are still skeptical<br />

of the presence of phosphine on Venus in<br />

the absence of new data. But telescope time<br />

is tightly managed, so no one has been able<br />

to search for phosphine signals from Venus<br />

since the team’s ALMA observation.<br />

Greaves also highlighted the personal<br />

side of academic vitriol. “I still encounter<br />

problems, as does almost every woman<br />

astronomer I speak with,” Greaves said. “In<br />

the Venus case, it’s very clear that Anita [M.<br />

S. Richards] and I were the data analysts on<br />

the paper, and very clear also that people<br />

thought we must have made the most basic<br />

errors. It’s hard to see how that can be—given<br />

a quick search would have shown that we are<br />

both senior career stage and former staff at<br />

the telescopes we used for Venus—unless it<br />

was easy to assume women are incompetent.”<br />

The meaning of the phosphine detected on<br />

Venus is beyond what scientists can currently<br />

explain. When pushing the boundaries of<br />

knowledge, science requires a high degree<br />

of caution—after all, it took Newton two<br />

decades to publish his work on the theory of<br />

universal gravitation. So when answering the<br />

trickiest questions, equal parts skepticism<br />

and humility are required. We still don’t<br />

know what’s going on in the clouds of Venus,<br />

but it’s worth sincerely endeavoring to<br />

figure it out. ■<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 31


FEATURE<br />

Physics<br />

ROOM TEMPERATURE<br />

SUPERCONDUCTORS?<br />

NOT SO FAST<br />

BY YAMATO TAKABE & YOSSI MOFF<br />

The world of “Back to the Future,”<br />

where levitating hoverboards<br />

and cars are the norm, might<br />

not be as distant as it appears, thanks<br />

to superconductors. That level of<br />

prevalence and accessibility, though,<br />

hinges upon the discovery of room<br />

temperature superconductors. Until now,<br />

superconductors have only been found at<br />

temperatures far below freezing point. But<br />

a few months ago, a potential breakthrough<br />

in the discovery of room temperature<br />

superconductors was made. Unfortunately,<br />

many scientists were skeptical.<br />

Superconductors transmit an electrical<br />

current through themselves without losing<br />

any energy; in other words, they have no<br />

electrical resistance. Additionally, unlike<br />

normal conductors, which allow magnetic<br />

fields to pass through, superconductors<br />

repel external magnetic fields—a property<br />

known as the Meissner Effect. This<br />

property allows superconducting materials<br />

to levitate in the presence of magnets: a<br />

macroscopic manifestation of quantum<br />

mechanical effects.<br />

With these powerful properties,<br />

superconductors have incredible<br />

applications. Room-temperature<br />

superconductors would allow for lossless<br />

electricity transmission over long<br />

distances. This could lead to a more efficient<br />

and cost-effective electricity distribution in<br />

the power grid. And this isn’t just a far-off<br />

future. Superconductors are already used<br />

in Magnetic Resonance Imaging (MRI)<br />

screening technology, which is widely used<br />

in the world of medicine. And the Maglev<br />

train, a levitating locomotive that can<br />

reach speeds of over 250 miles per hour,<br />

also relies on superconducting magnets to<br />

push it forward.<br />

However, these superconducting<br />

properties do not appear naturally.<br />

Superconductivity has only been<br />

observed when certain materials are held<br />

at extremely low temperatures, close to<br />

absolute zero (that’s 0 Kelvin, or -273°C).<br />

Ever since superconductivity was first<br />

discovered back in 1911 by physicist Heike<br />

Kamerlingh Onnes, scientists have tried<br />

to observe it at the highest temperatures<br />

possible. While improvements have been<br />

made, these materials must still be kept<br />

32 Yale Scientific Magazine December 2023 www.yalescientific.org


Physics<br />

FEATURE<br />

at extremely low temperatures to express<br />

their superconductivity.<br />

Unfortunately, maintaining low enough<br />

temperatures to trigger superconductivity<br />

is incredibly expensive. Superconductors<br />

are so useful that scientists are willing<br />

to pay large amounts of money in<br />

order to maintain their extremely<br />

cold environments. But what if this<br />

superconductivity could be triggered at<br />

a much higher temperature—say, room<br />

temperature? Techniques that were<br />

previously limited by exorbitant costs<br />

would then become widely available.<br />

Furthermore, the scientists who uncovered<br />

this secret would be catapulted to<br />

international fame with their Nobel-Prizecaliber<br />

achievement.<br />

Many scientists have spent years<br />

dreaming of this mission: to achieve<br />

superconductivity at room temperature<br />

and ambient, or standard, pressure."<br />

On October 2020, the first instance of a<br />

notable advancement in creating a room<br />

temperature superconductor was reported<br />

by a team led by Ranga Dias at the University<br />

of Rochester, and Ashkan Salamat at the<br />

University of Nevada. They claimed to<br />

have observed superconductivity in a<br />

material known as carbonaceous sulfur<br />

hydride (CSH) at 288K (15°C). However,<br />

this breakthrough came with a condition:<br />

it occurred within a diamond anvil cell<br />

under immense pressure—approximately<br />

1.5 million times Earth's atmospheric<br />

pressure. Additionally, there were many<br />

concerns raised about the processing and<br />

analysis of the data presented in the paper.<br />

In light of this, in September 2022, the<br />

journal Nature decided to retract the<br />

paper. Dias and Salamat claimed again<br />

in a second paper published in March<br />

2023 that they had discovered a room<br />

temperature superconductor, but this time<br />

with lutetium hydride and nitrogen added<br />

to the sulfur hydride. They asserted that<br />

it had the properties of a superconductor<br />

at temperatures of up to 294K (21°C) with<br />

much lower pressure. However, this paper<br />

was also retracted by Nature on November<br />

7, 2023, following similar concerns with<br />

their data.<br />

Sukbae Lee and Ji-Hoon Kim, both<br />

physicists from Seoul, South Korea, are<br />

yet another duo of scientists who claimed<br />

to have achieved this groundbreaking<br />

accomplishment. In late July, they<br />

published non-peer-reviewed pre-prints of<br />

their work, which is common for research<br />

scientists. At first glance, their findings<br />

were truly groundbreaking. They had<br />

discovered a material they named LK-99<br />

that demonstrated all superconductive<br />

properties under normal conditions,<br />

ostensibly achieving the world’s first roomtemperature<br />

superconductor.<br />

Researchers worldwide jumped onto<br />

this major breakthrough and tried to<br />

replicate it. Among the physicists who<br />

were reproducing and verifying the<br />

experiment was Yuan Li, a condensed<br />

matter theorist who leads a research<br />

lab at Peking University in China. Li<br />

collaborated with two other experimental<br />

physicists, providing interpretations of<br />

the measurements and observations.<br />

“At the beginning, it looked legit. The<br />

original authors, they do believe in what<br />

they are saying, and they are willing<br />

to disclose all the information to the<br />

scientific community so that everyone can,<br />

in principle, follow their steps and try to<br />

verify the observation,” Li said.<br />

Yet when Li and his team began<br />

repeating the experiments detailed in<br />

the original publication, their data did<br />

not support the original claim. Because<br />

the scientists claimed that LK-99 had<br />

superconductor properties at room<br />

temperature, the properties should have<br />

been easy to replicate. Yet many physicists<br />

and material scientists, including Li,<br />

struggled during their replication<br />

processes. When testing the levitation of<br />

LK-99, Li and his team observed that LK-<br />

99 didn’t fully repel the magnet. Instead,<br />

one corner of LK-99 touched the magnet,<br />

revealing that LK-99 was not levitating,<br />

but was still experiencing ordinary<br />

attraction to the magnet.<br />

Furthermore, they discovered that its<br />

resistance was not actually zero—a critical<br />

property of superconductors. With the<br />

evidence piling up against LK-99 being a<br />

room temperature superconductor, Li and<br />

his group published their findings in a<br />

scientific journal. It turned out that LK-99,<br />

at least at room temperature, was simply<br />

a semiconductor with ferromagnetic<br />

properties, or high susceptibility to<br />

magnetization.. Along with papers from<br />

other groups that also disproved the<br />

original claim about LK-99, Li’s paper<br />

helped relegate this highly-anticipated<br />

room temperature superconductor as one<br />

of science’s many failed attempts.<br />

“This brings light to the high stakes<br />

of popular science and the need for<br />

competent ‘referees’ to overlook the<br />

process,” Li said. Eye-catching research<br />

fields like superconductors could<br />

potentially revolutionize many industries,<br />

so there is naturally a lot more funding<br />

for these research projects, but also a lot<br />

more pressure to produce tangible results.<br />

More pressure for results means a greater<br />

likelihood of falsified, or in this case,<br />

prematurely published, research. Whether<br />

it comes from journal peer-reviewers or<br />

fellow scientists, regulation is needed to<br />

prevent misinformation or misconceptions<br />

from becoming mainstream science.<br />

Despite the failures, Li emphasized the<br />

importance of this research. “Although<br />

papers were rushed, we should still thank<br />

the researchers for their effort and bravery<br />

to produce the research. Any information<br />

is useful information, thus furthering the<br />

story,” Li said.<br />

In the quest to discover a room<br />

temperature superconductor, we<br />

are reminded to be transparent and<br />

skeptical. As Carl Sagan famously<br />

said, “Extraordinary claims require<br />

extraordinary evidence.” It is not a sign of<br />

failure to question extraordinary claims;<br />

rather, it is an essential element of the<br />

scientific process that ensures the integrity<br />

of scientific knowledge. So, while the<br />

journey to achieving room temperature<br />

superconductivity may still be ongoing, the<br />

Sagan Standard serves as a guiding light—<br />

reminding us to think boldly, but always<br />

demand extraordinary evidence in our<br />

relentless pursuit of scientific excellence. ■<br />

ART BY<br />

KARA TAO<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 33


SPECIAL<br />

Archives vs. Today<br />

From The Archives: Science Fiction<br />

Prediction of Scientific Fact<br />

Editor's Note:<br />

In the spirit of this special issue, we<br />

traveled back in time and dove into<br />

<strong>YSM</strong>’s archives, seeking to track how<br />

our perception of scientific progress<br />

has changed over the last century.<br />

We found one <strong>YSM</strong> article written by<br />

Yale physics major Henry Thwing in<br />

1951 (reproduced here), to which we<br />

asked one of our members to write<br />

a response (pg. 35). In this side-byside<br />

comparison, we examine how<br />

our vision of artificial intelligence<br />

(AI) technology—and how it is<br />

presented in literary science fiction—<br />

has changed between the midtwentieth<br />

century and the present.<br />

To most dyed-in-the-wool science fiction<br />

fans, any suggestion that science fiction<br />

may be utter nonsense is sacrilege. They<br />

will immediately point to Jules Verne, the first<br />

truly great science prophet. His submarine in<br />

“Twenty Thousand Leagues under the Sea”,<br />

written in 1870, has a design very similar to<br />

present day construction and is run by an<br />

electric motor and screw. The “Gymnote”, built<br />

in 1888 was the first submarine to incorporate<br />

this improvement.<br />

Now, in modern science fiction, the writers<br />

are attempting to predict what the world will<br />

be many years from now. Even among stories<br />

written in recent years, it is not difficult to find<br />

those which have come true. “Deadline” by<br />

Cleve Cartmill was so accurate in its description<br />

of an atomic bomb when it appeared in 1944<br />

that the author was investigated for connections<br />

with the Manhattan Project. It is just as likely<br />

that some of the stories being published today<br />

will become realities in the near future.<br />

Let us look into the various types of science<br />

fiction stories to see just how and what the<br />

author predicts.<br />

***<br />

[One] field in which the author attempts<br />

a sincere prediction is that of robots. There<br />

is a very important question in connection<br />

with thinking machines which most of these<br />

stories consider: “If we build intelligent robots,<br />

will they become our masters?” The resultant<br />

answers vary. Usually there is a condition<br />

to all thinking the robots do which is built<br />

into their machinery—no harm must be<br />

done to any human being. Jack Williamson's<br />

“Humanoids” follow this directive in an odd<br />

way. They restrict the motions of humans so<br />

severely that life becomes a hell of inaction.<br />

Their actions are directed entirely by cold<br />

logic. Isaac Asimov, in his series, has equipped<br />

robots with the human emotion of a love<br />

somewhat like maternal love, overcoming<br />

this difficulty. Other emotions which have<br />

been granted robots by their authors are<br />

pride, respect, and even sexual love. A good<br />

example of the latter appeared in a November<br />

issue of Collier's under the title of “Epicac”, in<br />

which an electronic calculator falls in love<br />

with its female operator. In all these cases,<br />

the author is trying to see what will be the<br />

effect both on men and on the robots if the<br />

machines should have the qualities which<br />

he postulates.<br />

Modern electronic calculators merely carry<br />

out mathematical operations, introducing<br />

no new variables and no original thought.<br />

Even then, however, they exhibit properties<br />

sometimes with a striking similarity to mental<br />

aberration. If a calculator could be made which<br />

by HENRY W. THWING, 1951<br />

would correlate data in ways other than those<br />

fed into it, then it would be a thinking machine<br />

much as those stipulated by science fiction.<br />

Sociological development offers another<br />

field of prediction. Here, the writer observes the<br />

recent development in our customs, especially<br />

our growing dependence on science and<br />

machines and extrapolates into the future. To<br />

some, science will eventually yield a paradise<br />

on Earth; to others, the cold objectivity of<br />

science will fail to realize the importance of<br />

the individual and the result of science in<br />

the government (which both types of story<br />

predict) will be a stricter life even than that<br />

under a military government. Some authors<br />

even predict a world of neuters in which<br />

babies are developed by chemical processes.<br />

Although this seems unlikely, it is nevertheless<br />

an attempt to foretell the path along which our<br />

society will advance.<br />

***<br />

Stories such as these offer food for thought.<br />

Scientists and engineers make up a good share<br />

of those who are avid fans of science fiction.<br />

The stories tell them what might be invented<br />

and then they frequently try to develop it.<br />

When it became necessary to develop a<br />

suitable dress for high-altitude flight, one<br />

of the adopted styles was a copy of science<br />

fiction’s space suit. In particular, the “goldfish<br />

bowl” helmet (which allows the pilot to look<br />

around without turning his whole body) was<br />

used. (Astounding Science Fiction, Vol. L, No.<br />

1, March 1948. “The Space Suit” by L. Sprague<br />

de Camp)<br />

One should not criticize the fantastic nature<br />

of science fiction before carefully considering<br />

the many consequences it has led to in<br />

modern science. The fantasy of other ages<br />

has continued to be the reality of the present.<br />

With an honest look at the history of scientific<br />

discovery, who can claim to deny the heuristic<br />

value of the wild ideas of fiction? Indeed, will<br />

it not continue to be true that the seeds of<br />

science fiction today will yield a harvest of<br />

new scientific discovery tomorrow? ■<br />

34 Yale Scientific Magazine January 1951 (Reprint) www.yalescientific.org


Archives vs. Today SPECIAL<br />

When Science Fiction Becomes Fact<br />

Responding to The Rise of "Thinking Machines"<br />

by IAN GILL, 2023<br />

Will we one day live in a world<br />

dominated by thinking machines?<br />

This is the central question of<br />

Thwing's 1951 article in Vol. 25 No. 4 of the<br />

Yale Scientific (reprinted on pg. 34) and one<br />

that is often posed today. But perhaps a more<br />

pertinent question to ask is: do we already live<br />

in such a world? In his article, Thwing posits,<br />

“If a calculator could be made which would<br />

correlate data in ways other than those fed<br />

into it, then it would be a thinking machine<br />

much as those stipulated by science fiction.”<br />

According to his definition, thinking machines<br />

are already deeply integrated into our society,<br />

from the Tinder and Hinge algorithms that<br />

determine who we might fall in love with to<br />

programs used by financial firms that shape<br />

economic development across the globe.<br />

What captures our attention, and our fear,<br />

most about Thwing’s thinking machines is<br />

the possibility that they might be able to think<br />

autonomously. Most people would argue<br />

that social media algorithms and similar<br />

technologies don’t “control” our society in<br />

the way that past science fiction writers have<br />

described: they lack independence and only act<br />

on human command. But the possibility that<br />

machines could surpass this limit—an idea<br />

that in Thwing’s age was relegated to writers’<br />

rooms and dinner party conversations—has<br />

become far less remote. With the advent of<br />

the language model-based chatbot ChatGPT,<br />

our society has had to grapple with artificial<br />

intelligence (AI) as a force capable of changing<br />

our entire way of life.<br />

Here at Yale, for instance, the Schmidt<br />

Program on Artificial Intelligence, Emerging<br />

Technologies, and National Power under the<br />

Jackson School of Global Affairs describes its<br />

aim as to “examine how AI has the potential to<br />

alter the fundamental building blocks of world<br />

order.” This is what the AI-related science<br />

fiction that Thwing describes aimed to do—<br />

only now, this task has moved from the realm<br />

of speculation to the realm of academic inquiry<br />

and policy development. In a poll of 119 CEOs<br />

conducted by Yale School of Management<br />

professor Jeffrey Sonnenfeld, over forty percent<br />

indicated that they believed that AI had the<br />

potential to destroy humanity in the next five<br />

to ten years. While these respondents may not<br />

be the most technically knowledgeable on AI,<br />

the fact is that their opinions will govern how<br />

we integrate AI into our everyday lives.<br />

Despite recent advances, some believe that<br />

human-like, emotional AI will remain in the<br />

realm of fiction. In an opinion piece published<br />

in The Washington Post in April, Yale professor<br />

of computer science David Gelernter argues<br />

that software is fundamentally unable to<br />

experience consciousness. He suggests that<br />

the concept of a conscious computer is akin<br />

to a conscious toaster. AI will never be able to<br />

“understand” the world as humans do—it will<br />

only be able to draw surface-level connections<br />

based on the data it receives.<br />

Whether or not you agree with Gelernter,<br />

the fact remains that AI will play an<br />

increasingly significant role in our society. In<br />

his article, Thwing says, “The seeds of scientific<br />

fiction today will yield a harvest of new<br />

scientific discovery tomorrow.” In this sense,<br />

his proposition is firmly validated. As for<br />

whether our technology will come to control<br />

us, I would argue that it always has, in the same<br />

way that we control it. Just as the invention of<br />

agriculture changed human social structures<br />

from small hunter-gatherer communities to<br />

larger sedentary settlements twelve thousand<br />

years ago, technological breakthroughs alter<br />

not only our ability to interact with the world,<br />

but also our core values as a species. Our<br />

values, in turn, mold how we employ and<br />

develop future technology.<br />

Thwing’s article is fundamentally about the<br />

value of science fiction, and thus any analysis of<br />

his work would be incomplete without asking<br />

what will become of science fiction in the<br />

world of AI. I would argue that it will remain in<br />

the same place that it’s always been in. Science<br />

fiction, and art in general, is not something<br />

that we produce for the sole purpose of mass<br />

consumption. Perhaps some science fiction<br />

novels of the future may be written by nonhuman<br />

authors, but this does not mean science<br />

fiction as a whole will become an automated<br />

process by which we will become “robotic”<br />

consumers. An AI-generated story might<br />

spark an idea for a different story written<br />

by a human author, which would in turn be<br />

incorporated into the AI database.<br />

Just as humans mutually benefit from<br />

sharing their literary works with one another,<br />

the same may hold true for humans and<br />

AI. Beyond the specific details of how this<br />

relationship might work, one thing remains<br />

clear: humans will always dream about the<br />

world of tomorrow, and as long as we do,<br />

science fiction will always have a place in our<br />

collective consciousness. ■<br />

Image Generated by ChatGPT<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 35


HISTORY OF HYPE AND FAILURE<br />

BY XIMENA LEYVA PERALTA<br />

SCIENCE<br />

IN<br />

IMAGE COURTESY OF FLICKR<br />

It is the late 1910s. Airship travel between German cities has just become a reality.<br />

Newspapers report that a trip across the Atlantic will soon take place. Airships<br />

seem to be the future of transportation.<br />

But during the following decades, airship accidents keep happening. In 1937, one<br />

explodes during its flight from Frankfurt to New Jersey. Thirty-five passengers are<br />

immediately killed, and the era of airship travel abruptly ends.<br />

In his book Invention and Innovation: A Brief History of Hype and Failure,<br />

Czech-Canadian policy analyst and scientist Vaclav Smil examines the failures that<br />

arise when a product or process fails to meet expectations. He first distinguishes<br />

between invention (creating new ideas and products) and innovation (introducing,<br />

adopting, and mastering inventions). “There could be plenty of invention without<br />

commensurate innovation,” he explains. In his book, Smil examines three categories<br />

of failures: “unfulfilled promises, disappointments, and eventual rejections.”<br />

The first category comprises inventions that were initially praised but were<br />

eventually viewed with widespread suspicion. One example that Smil cites is<br />

chlorofluorocarbons (CFCs), nonflammable hydrocarbons widely adopted as<br />

refrigerants in 1930. Fifty years later, it became clear that CFCs cause substantial<br />

damage to the ozone layer, and international measures were instituted to eliminate<br />

their use. A second example is dichlorodiphenyltrichloroethane (DDT). DDT was<br />

introduced as a powerful insecticide in the 1940s and successfully prevented five<br />

hundred million deaths due to malaria, but was eventually linked to adverse effects<br />

on the environment. However, its success in saving lives meant that DDT required<br />

more nuanced regulations.<br />

The second category consists of technical advances that the public immediately<br />

welcomed but that ultimately ended in disappointment. For instance, airships<br />

seemed like they would dominate air travel between the 1910s and 1930s, but their<br />

instability, coupled with the rapid development of airplanes, cut their lives short.<br />

Nuclear fission, the splitting of atoms, is a second example: in the 1970s, there was<br />

widespread scientific agreement about its success, and General Electric predicted<br />

the end of fossil-fueled energy generation by 1990. As of 2022, only ten percent of<br />

world energy is generated by nuclear reactors.<br />

The third category includes inventions that we keep waiting for. The first example<br />

Smil provides is travel in a near vacuum, called a hyperloop, whose origins trace<br />

back to the 1820s. However, as of 2023, there are no operating hyperloop lines.<br />

Another highly anticipated invention he lists is nuclear fusion, the combination<br />

of atomic nuclei. Thought to be the ultimate clean energy source, it is still far from<br />

commercial implementation. Smil notes that mass media has inaccurately labeled<br />

all fusion advancements as breakthroughs instead of proof-of-concept experiments.<br />

Although dense at times, Smil’s data-driven and articulate writing delivers sharp<br />

critical analyses of humankind’s greatest failures. He contrasts positive opinions<br />

about inventions with data supporting their negative repercussions. In the final<br />

chapter, Smil warns readers against the myth of ever-growing innovation. “Success<br />

is only one of the outcomes of our ceaseless quest for invention,” he says. Just as our<br />

past is plagued by disappointment, our future will inevitably be filled with scientific<br />

failures—some of which will hopefully, one day, lead to eventual success. ■<br />

T<br />

S<br />

36 Yale Scientific Magazine December 2023 www.yalescientific.org


SERENDIPITOUS SCIENCE<br />

BY JAMIE SEU<br />

Oops! is not a word you want to hear in the lab. Unfortunately (or not),<br />

accidents are a common reality in research. But sometimes, these<br />

mistakes can bring about valuable revelations, as discovered by the<br />

nominees of NPR’s Golden Mole Award for Accidental Brilliance.<br />

A podcast presented by Skunk Bear, NPR’s science-centered YouTube channel,<br />

highlights five instances of serendipitous scientific discovery, including the<br />

story behind the winner of the Golden Mole, Elizabeth Tibbetts. A biologist at<br />

the University of Michigan, Tibbetts was researching wasp behavior when she<br />

stumbled upon a fascinating revelation: wasps can recognize each other’s faces,<br />

just as humans can.<br />

The realization started with a careless mistake. To study wasp behavior, Tibbetts<br />

taped and watched video footage of the insects, analyzing interactions between<br />

colony members. She color-coded each wasp with a dot of paint, a critical step that<br />

allowed her to distinguish between the insects. One day, however, she discovered<br />

that she had forgotten to paint a few wasps, leaving her with what she thought was<br />

a frustrating waste of a recording. But something caught her eye—she realized<br />

that the wasps had discernible facial features. “I could still tell them apart, just by<br />

their natural patterns,” Tibbetts said. Upon closer inspection, Tibbetts identified<br />

unique colors, patterns, and “eyebrow” structures that allowed her to differentiate<br />

them. The question then became: If she could distinguish between individuals,<br />

could the wasps themselves tell each other apart?<br />

THE<br />

According to prior research on insect behavior, the answer was no. But<br />

Tibbetts was determined to investigate the subject herself. “Maybe if I had more<br />

experience, I wouldn’t have pursued it, because maybe I would have thought it<br />

was implausible,” Tibbetts said. Fortunately, she pushed on and determined that,<br />

yes, wasps can recognize each other. Furthermore, it is this ability that facilitates<br />

complex social interactions between members of a colony and allows for wasps to<br />

develop personal relationships.<br />

Tibbetts’ serendipitous tale was one of hundreds of stories submitted to Skunk<br />

IMAGE COURTESY OF PIXABAY<br />

Bear. One notable runner-up was George Liu, a researcher at the University of<br />

California, San Diego, who discovered the novel use of pigment as a bacterial<br />

defense mechanism after his lab equipment was contaminated with bleach. Other<br />

memorable contenders included former Stanford University undergraduate Nate<br />

SPOTLIGHT<br />

Cira and his adviser, Manu Prakash, who discovered the role of evaporation and<br />

surface tension in artificial chemotaxis, the movement of a particle in response<br />

to a chemical stimulus. While these stories only offer a glimpse into the myriad<br />

of ways in which discoveries can be made, they highlight the value of mistakes<br />

in research. Skunk Bear’s Golden Mole Award takes a creative approach to<br />

emphasize this lesson, presenting the “what” and “how” of the research in an<br />

amusing manner. Any listener curious about the “why” will need to engage in<br />

some investigation of their own due to the podcast’s brevity.<br />

Skunk Bear’s Golden Mole segment is worth a listen for any person, researcher<br />

or not, who could use a reminder about the importance of adaptability and<br />

perseverance. If we can learn anything from these scientists, it’s that “oops” can<br />

be okay sometimes. It might even lead to something great. ■<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 37


COUNTERPOINT<br />

RECKONING WITH<br />

THE GHOSTS OF<br />

<strong>YSM</strong>’S PAST<br />

In 1903, Yale undergraduate Almer Mayo Newhall<br />

wrote on “The Position of the Negro within the<br />

Human Family.” The piece opens with a promise<br />

to inspect “what characterizes the inferiority of the<br />

Negro to the white man”—an “inferiority” which, by<br />

its final assertion, justifies that the North’s “slavery<br />

legislation was a failure.” The article appeared in Vol.<br />

IX No. VI of the Yale Scientific Monthly, the precursor<br />

to the Yale Scientific Magazine.<br />

Newhall’s piece is a damning, though hardly isolated,<br />

artifact within an extensive archive of racist scientific<br />

publishing at Yale and beyond. At the same time that<br />

the American Eugenics Society opened its headquarters<br />

on Hillhouse Avenue and North Carolina was enacting<br />

its first forced sterilization campaign in 1929, <strong>YSM</strong><br />

was printing articles about “The Need of Immigration<br />

Restriction” and “extremely primitive, unpatriotic,<br />

seemingly indolent and childish … Africans of today.”<br />

On one hand, the insidious context deflects blame<br />

from the undergraduates writing for Yale Scientific<br />

Monthly at the time. Systemic racism in the United<br />

States did not originate with scientific journalism,<br />

which reflects scientific research, which reflects public<br />

discourse. But publishing is not a passive process either.<br />

What gets published directly shapes public discourse,<br />

future research, and the policies that govern our social<br />

structures. And so scientific communication, if done<br />

poorly, reproduces harm and injustice.<br />

So, where did Newhall go wrong? For one, it’s bad<br />

science. He predicates neural behavior on phrenology,<br />

the shape of one’s skull. He employs dubious-at-best<br />

methodologies, claiming that the “trained eye” can<br />

detect more convolutions in the white man’s brain. He<br />

uses evidence that is simply false, arguing, at one point,<br />

that Black people have pharyngeal pouches that white<br />

people lack. And he invents fictitious history when his<br />

evidence fails, imagining “the Negro in his own native<br />

jungle,” brought into “contact with civilization” by<br />

Europeans. Not to mention that the “white man and<br />

the Negro” is fundamentally a false dichotomy, which<br />

dooms the entire article’s logic before it begins.<br />

Newhall’s article should have never been approved for<br />

publication in a scientific magazine. But the conversation<br />

shouldn’t revolve around whether Newhall’s article used<br />

faulty induction (it did), or whether race science is a<br />

legitimate science (it’s not). The conversation should<br />

revolve around whether certain research queries,<br />

BY SAMANTHA LIU<br />

IMAGE COURTESY OF PIXABAY<br />

however rigorous, are simply morally bad questions. This<br />

is where the editorial role of a public-facing magazine<br />

like the Yale Scientific bears a different responsibility<br />

than a reviewer for an academic journal like Nature.<br />

As journalists first, and scientists second, we should<br />

recognize that “science for the sake of science” is never<br />

enough, because science never exists in a vacuum.<br />

The demand to simply have more moral sense gets lost<br />

among structures of Eurocentrism and exclusion which<br />

govern scientific communication. In journalism—a field<br />

that already favors the white and wealthy—scientific<br />

coverage is among the least diverse. According to the latest<br />

Pew Research Center report, only three percent of media<br />

journalists covering science and technology identify as<br />

Black, compared to the nationwide six percent. And for<br />

members of the National Association of Science Writers,<br />

in 2021, only one percent identified as Black.<br />

Beyond diversity at the editorial level, scientific<br />

communication is—and will remain—inaccessible if it<br />

limits itself to what gets published in leading research<br />

journals. A paper costs thousands of dollars to publish,<br />

and research itself is getting costlier. Such economic<br />

barriers are compounded for Black and women<br />

scientists, who are less likely to receive grants from the<br />

National Institutes of Health. While it’s easier to source<br />

stories from the front pages of Nature, these findings<br />

originate from scientists who benefit by affiliation with<br />

well-endowed institutions. Meanwhile, on a global scale,<br />

the landscape of publishing marginalizes non-Western<br />

scholarship, stereotypically deemed “unscientific.” While<br />

there is invaluable knowledge possessed by indigenous<br />

populations about environmental sustainability, or<br />

by scientists in the global South on tropical diseases,<br />

they never receive the limelight of research journals.<br />

Here, scientific magazine boards have the capacity to<br />

recognize—and rectify—the inequities that arise at<br />

the level of academic publishing by broadening who is<br />

credited as an “expert.”<br />

While DEI (diversity, equity, and inclusion) is often<br />

demeaned as a corporate buzzword, diversifying these<br />

stories matters. Scientific journalism is the link between<br />

academic research and public perception—and in<br />

the scientific world, attention is currency. What gets<br />

published goes on to influence what research gets funded<br />

in the future. By being deliberate about these choices, the<br />

Yale Scientific Magazine can reach beyond the confines of<br />

its past, working toward a safer and fairer future. ■<br />

38 Yale Scientific Magazine December 2023 www.yalescientific.org


I<br />

read an article from a 1956 issue (Vol. 30 No. 8)<br />

of the Yale Scientific Magazine titled “Teflon Resin:<br />

Preparation and Characteristics,” further discussed<br />

in this issue on pg. 19. The article mostly describes how<br />

Teflon—a DuPont brand name for a resin made from<br />

polymerizing tetrafluoroethylene—was first produced.<br />

The Teflon polymer was originally discovered when a<br />

DuPont scientist noticed that it appeared in a powdery<br />

form when tetrafluoroethylene monomers were stored<br />

at super-atmospheric pressures. The article goes on<br />

to describe Teflon’s unique properties, the modern,<br />

efficient manufacturing process, and the “brilliant<br />

future” that the compound holds. I found it ironic and<br />

somewhat depressing to read this article—which was<br />

full of excitement for the chemical—from a modern<br />

perspective, knowing how damaging Teflon and other<br />

similar plastics have been to the environment.<br />

I wanted to reimagine the discovery and production<br />

of Teflon from the perspective of the molecules<br />

used to make it. If they could think, how might<br />

these molecules, which once made up the bodies of<br />

living creatures before decomposing into oil, feel<br />

about being dredged up from the ocean? Humanity’s<br />

overconsumption and production of plastics disrupt<br />

Earth’s natural cycles of renewal, in which the<br />

biological decays, but remains natural. Once extracted<br />

from the earth, the compounds used to make Teflon<br />

PERI<br />

A NEW PRECIPITATION<br />

Artist’s Statement<br />

Into the earth the oil well dips like a crane, dredging up<br />

Slick-oils, sucking, gulping from the seafloor ancient crud<br />

& festering remains of our ancestors: the turnover, the dredge,<br />

Forgotten by all but time & rock & rot. Into the light they rain<br />

Upwards, unwilling, compounds of bodies torn from dark sleep,<br />

Filling test tubes, measured by blasts of radioactive sulfur. Cut up<br />

& compartmentalized, monomers polymerized, fumigated under an<br />

Indoor sky, inhaling the spiky scent of fluorine. The reactive turns inert,<br />

Carbon dead-eyed behind a veil of single bonds. Molecules forget the pull<br />

Toward entropy. They will never be bones again. They are stuck always in<br />

Non-life, imitation bone—teflon—ugly name, ugly destiny, smooth vacuum<br />

Of un-possibilities. Made here & there, again & again, more spilling out, fragmenting,<br />

sifting into soil & water & bodies of fish & floating islands of plastic,<br />

Until they gloss over the entire earth—slick, smooth, white. Almost like snow.<br />

experience all sorts of unnatural transformations,<br />

which I tried to evoke in my poem. For example,<br />

“radioactive sulfur” is a reference to the process used by<br />

the researchers to estimate Teflon’s molecular weight,<br />

and “fumigated under an indoor sky” represents the<br />

way the monomers are polymerized under intense<br />

pressure. The veil of fluorine is a response to one of<br />

the qualities of Teflon that the original article was so<br />

excited about: because the compound is essentially a<br />

string of carbons all single-bonded to fluorine, and<br />

C-F bonds are extremely strong, Teflon is remarkably<br />

inert, both chemically and physically. How might<br />

carbon molecules, which are used to interacting with<br />

the world through biological reactions, feel about<br />

being cut off from the world by these C-F bonds?<br />

Finally, I wanted to move beyond the scope of<br />

the original article to discuss the overproduction<br />

of Teflon and other plastics. The overproduction of<br />

plastic contributes to global warming, and plastic itself<br />

inevitably leaks into and pollutes the environment.<br />

I made my lines progressively longer, so the poem<br />

itself spills outward. In an age where more and more<br />

of the environment has been affected by humans—<br />

with pollution and global warming changing even the<br />

atmosphere and weather patterns—are we dooming<br />

ourselves to a world where artificial wonders such as<br />

Teflon replace natural ones? ■<br />

METER<br />

BY MOLLY HILL<br />

ART BY KARA TAO<br />

www.yalescientific.org<br />

December 2023 Yale Scientific Magazine 39


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