YSM Issue 96.4
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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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