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<strong>The</strong> <strong>international</strong> <strong>economics</strong> <strong>of</strong> <strong><strong>resource</strong>s</strong> <strong>and</strong> <strong>resource</strong> policy 149<br />

natural <strong><strong>resource</strong>s</strong>, it is clear that a key abatement strategy, such as energy efficiency, is not<br />

just mirrored by attempts to use materials more efficiently. Using materials more<br />

efficiently also potentially allows for grasping more opportunities to save energy along the<br />

whole value chain, to save material purchasing costs <strong>and</strong> to enhance competitiveness<br />

(Aldersgate Group 2010; Bringezu <strong>and</strong> Bleischwitz 2009).<br />

In a broader context, fossil fuels are but one natural <strong>resource</strong> that is used in societies<br />

worldwide. All potential substitutes such as bi<strong>of</strong>uels <strong>and</strong> renewable energies depend upon<br />

natural <strong><strong>resource</strong>s</strong> such as l<strong>and</strong>, steel <strong>and</strong> platinum. Providing these natural <strong><strong>resource</strong>s</strong> in a<br />

most sustainable manner will thus become a key strategy for climate change mitigation as<br />

well as for green growth. How industry <strong>and</strong> economies take up these challenges will<br />

become a major issue for economic research.<br />

International commodity markets provide important signals on using natural<br />

<strong><strong>resource</strong>s</strong> to economic actors. After a relatively long period <strong>of</strong> surging commodity<br />

prices, the financial crisis marked a break in 2008. However, after a sharp decline in<br />

early 2009 the commodity prices have again started to rise <strong>and</strong> are now back at a<br />

level that is higher than in the nineties <strong>of</strong> the last century. Analyzing the dynamics <strong>of</strong><br />

these markets, be it for oil, raw materials or for secondary materials, as well as<br />

potential leakage effects that result from low regulatory environmental st<strong>and</strong>ards,<br />

will deserve more attention from <strong>international</strong> <strong>economics</strong> in the coming years.<br />

Moreover, given the weak state <strong>of</strong> forecasting in that area—yet, there is no<br />

<strong>international</strong> agency with a m<strong>and</strong>ate to develop a comprehensive set <strong>of</strong> scenarios on<br />

future materials markets—<strong>and</strong> acknowledging a lack <strong>of</strong> awareness for material<br />

efficiency as pointed out by Rennings <strong>and</strong> Rammer (2009), a well-spring <strong>of</strong> new<br />

research can be expected on current drivers for <strong>resource</strong> use <strong>and</strong> how actors <strong>and</strong><br />

economies will use natural <strong><strong>resource</strong>s</strong>, energy <strong>and</strong> materials in the future.<br />

Material Flow Analysis (MFA) was created a few years ago as an attempt to analyze<br />

the use <strong>of</strong> natural <strong><strong>resource</strong>s</strong> in societies. It is associated with concepts such as ‘industrial<br />

ecology’ <strong>and</strong> ‘socio-industrial metabolisms’ 1 —<strong>and</strong> may not yet have fully explored the<br />

economic dimension <strong>of</strong> material flows. Integrating the stages <strong>of</strong> production,<br />

consumption <strong>and</strong> recycling, it goes beyond traditional <strong>resource</strong> <strong>economics</strong> <strong>and</strong> <strong>of</strong>fers<br />

a comprehensive perspective for <strong>resource</strong> policy. Since Eurostat <strong>and</strong> OECD have<br />

provided h<strong>and</strong>books on the measurement <strong>of</strong> material flows, <strong>and</strong> do in fact promote the<br />

collection <strong>of</strong> data <strong>and</strong> applying concepts, there are many opportunities for<br />

<strong>international</strong> <strong>economics</strong> <strong>and</strong> economic policy to integrate MFA in their models <strong>and</strong><br />

empirical analysis.<br />

Recalling the issue <strong>of</strong> green growth <strong>and</strong> innovation, this special issue seeks to explore<br />

a new category <strong>of</strong> innovation that can be characterized as “material flow innovation”<br />

(see the paper written by Bleischwitz in this issue). While the established categories <strong>of</strong><br />

process, product <strong>and</strong> system innovation (as well as organizational <strong>and</strong> advertising<br />

innovation, see e.g. the OECD Oslo Manual on Innovation) have their merits, the claim<br />

can be made that given the pervasive use <strong>of</strong> <strong><strong>resource</strong>s</strong> across all stages <strong>of</strong> production <strong>and</strong><br />

consumption, a new category will have to be established to capture the various new<br />

innovation activities ahead.<br />

1<br />

See e.g. the web pages <strong>of</strong> the International Society for Industrial Ecology: www.is4ie.org <strong>and</strong> www.<br />

materialflows.net on data.

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