Designing a Better Jet Fuel Could Start with Corn Husks
Articles/Websites
Grades9, 10, 11, 12, APEarth and Space Sciences, Economics
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Provided by World Resources Institute
What it is
- This article explains how corn stover—the organic waste leftover after the corn harvest—could be converted into sustainable aviation fuel.
- It contrasts stover-based fuel with crop-based biofuels, which can divert farmland from food production and drive deforestation, and reviews a range of conversion technologies.
- It also describes the potential economic benefits for the United States Midwest, including job creation and income for farmers.
Teaching tips
Classroom Implementation:
- Pre-teach vocabulary words or provide students with a glossary (e.g., decarbonize, underutilized, nascent, mandate, concerted, abundant, feedstock, indicator).
- Have students distinguish between first-generation biofuels made from food crops and advanced biofuels made from agricultural waste, then debate the trade-offs of each using evidence from the text.
Interdisciplinary Connections:
- Economics:
- Use the article to engage students in a cost-benefit analysis using the figures given in the article about capital investment needs, projected job creation, labor income, and GDP.
- Have students discuss why a technology can be environmentally beneficial but not yet economically competitive, and to examine how policy tools like tax credits, mandates, and subsidies shift market incentives.
- Earth and Space Science:
- Analyze the claim that stover-based fuel can cut aviation emissions by 75% or more, while some crop-based "sustainable" fuels can produce more lifecycle emissions than fossil jet fuel once land-use change is counted.
- Use the claim to teach students about cradle-to-grave emissions accounting and why aviation is considered hard to abate.
- Geography:
- Focus on the claim that corn stover is abundant in the Midwest "Corn Belt," and using waste avoids diverting farmland from food to fuel, which elsewhere drives deforestation and higher food prices.
- Have students explore how the physical characteristics of a region shape economic opportunity, and how decisions about land and resources in one place ripple outward to global food and land-use patterns.
From the scientist review
In the article, sustainability is mentioned to refer to both economic and environmental sustainability. Currently many SAF solutions are environmentally sustainable but not economically sustainable.
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