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How colleges can become ‘living labs’ for combating climate change

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Tuesday, July 30, 2024

At the end of a semester that presaged one of the hottest summers on record, the students in associate professor Michael Sheridan’s business class were pitching proposals to cut waste and emissions on their campus and help turn it into a vehicle for fighting climate change. Flanking a giant whiteboard at the front of the classroom, members of the team campaigning to build a solar canopy on a SUNY New Paltz parking lot delivered their pitch. The sunbaked lot near the athletic center was an ideal spot for a shaded solar panel structure, they said, a conduit for solar energy that could curb the campus’s reliance on natural gas.  The project would require $43,613 in startup money. It would be profitable within roughly five years, the students said. And over 50 years, it would save the university $787,130 in energy costs. “Solar canopies have worked for other universities, including other SUNY schools,” said Ian Lominski, a graduating senior who said he hopes to one day work for the New York State Department of Environmental Conservation. “It’s well within the realm of possibility for SUNY New Paltz.”  Sheridan’s course is an example of an approach known as “campus as a living lab,” which seeks to simultaneously educate students and reduce the carbon footprint of college campuses. Over the past decade, a growing number of professors in fields as diverse as business, English and the performing arts have integrated their teaching with efforts to minimize their campuses’ waste and emissions, at a time when human-created climate change is fueling dangerous weather and making life on Earth increasingly unstable.  The State University of New York at New Paltz is among a growing number of higher education institutions where professors are using the “campus as a living lab” to teach students to reduce carbon emissions. Yunuen Bonaparte for The Hechinger Report Engineering students have helped retrofit buildings. Theater students have produced no-waste productions. Ecology students have restored campus wetlands. Architecture students have modeled campus buildings’ airflow and worked to improve their energy efficiency. The efforts are so diverse that it’s difficult to get a complete count of them, but they’ve popped up on hundreds of campuses around the country. “I think it’s a very, very positive step,” said Bryan Alexander, a senior scholar at Georgetown University and author of the book Universities on Fire: Higher Education in the Climate Crisis. “You’ve got the campus materials, you’ve got the integration of teaching and research, which we claim to value, and it’s also really good for students in a few ways,” including by helping them take action on climate in ways that can improve mental health. That said, the work faces difficulties, among them that courses typically last only a semester, making it hard to maintain projects. But academics and experts see promising results: Students learn practical skills in a real-world context, and their projects provide vivid examples to help educate entire campuses and communities about solutions to alleviate climate change. From the food waste students and staff produce, to emissions from commuting to campus and flying to conferences, to the energy needed to power campus buildings, higher education has a significant climate footprint. In New York, buildings are among the single largest sources of carbon emissions — and the State University of New York system owns a whopping 40 percent of the state’s public buildings.  Andrea Varga talks with honors students at SUNY New Paltz after they’ve made presentations as part of her Ethical Fashion course. Yunuen Bonaparte for The Hechinger Report About 15 years ago, college leaders began adding “sustainability officers” to their payrolls and signing commitments to achieve carbon neutrality. But only a dozen of the 400 institutions that signed on have achieved net-zero emissions to date, according to Bridget Flynn, senior manager of climate programs with the nonprofit Second Nature, which runs the network of universities committed to decarbonizing. (The SUNY system has a goal of achieving net-zero emissions by 2045, per its chancellor, John B. King Jr.)  Campus sustainability efforts have faced hurdles including politics and declining enrollment and revenue, say experts. “Higher ed is in crisis and institutions are so concerned about keeping their doors open, and sustainability is seen as nice to have instead of essential,” said Meghan Fay Zahniser, who leads the Association for the Advancement of Sustainability in Higher Education.  But there’s change happening on some campuses, she and others noted. At Dickinson College, in Pennsylvania, a net-zero campus since 2020, students in statistics classes have run data analyses to assess why certain buildings are less efficient than others. Psychology students studying behavior change helped the campus dining hall adopt a practice of offering half, full and double portions to cut down on food waste. Physics students designed solar thermal boxes to boost renewable biogas production on an organic farm owned by the college.  Neil Leary, associate provost and director of the college’s Center for Sustainability Education, teaches classes in sustainability. Last fall’s students analyzed climate risks and resilience strategies for the campus and its surrounding county and then ran a workshop for community members. Among the recommendations emerging from the class: that athletic coaches and facilities staff receive training on heat-related health risks.  A bike repair station at SUNY New Paltz. Yunuen Bonaparte for The Hechinger Report Similarly, at SUNY Binghamton, Pamela Mischen, chief sustainability officer and an environmental studies professor, teaches a course called Planning the Sustainable University. Her students, who come from majors including environmental studies, engineering and pre-law, have helped develop campus green purchasing systems, started a student-run community garden and improved reuse rates for classroom furniture.  And across the country, at Weber State University in Utah, students have joined the campus’s push toward renewable energy. Engineering students, for example, helped build a solar-powered charging station on a picnic table. A professor in the school’s construction and building sciences program led students in designing and building a net-zero house.  On the leafy SUNY New Paltz campus about 80 miles north of Manhattan, campus sustainability coordinator Lisa Mitten has spent more than a decade working to reduce the university’s environmental toll. Among the projects she runs is a sustainability faculty fellows program that helps professors incorporate climate action into their instruction.  One day this May, Andrea Varga, an associate professor of theatre design and a sustainability fellow, listened as the students in her honors Ethical Fashion class presented their final projects. Varga’s class covers the environmental harms of the global fashion industry (research suggests it is responsible for at least 4 percent of greenhouse emissions worldwide, or roughly the total emissions of Germany, France and the United Kingdom combined). For their presentations, her students had developed ideas for reducing fashion’s toll, on the campus and beyond, by promoting thrifting, starting “clothes repair cafes,” and more.  Microplastic filters in the Esopus Hall dormitory laundry room at SUNY New Paltz. Yunuen Bonaparte for The Hechinger Report Jazmyne Daily-Simpson, a student from Long Island scheduled to graduate in 2025, discussed expanding a project started a few years earlier by a former student, Roy Ludwig, to add microplastic filters to more campus washing machines. In a basement laundry room in Daily-Simpson’s dorm, two washers are rigged with the contraptions, which gradually accumulate a goopy film as they trap the microplastic particles and keep them from entering the water supply. Ludwig, a 2022 graduate who now teaches Earth science at Arlington High School about 20 miles from New Paltz, took Varga’s class and worked with her on an honors project to research and install the filters. A geology major, he’d been shocked that it took a fashion class to introduce him to the harms of microplastics, which are found in seafood, breast milk, semen and much more. “It’s an invisible problem that not everyone is thinking about,” he said. “You can notice a water bottle floating in a river. You can’t notice microplastics.” Around campus, there are other signs of the living lab model. Students in an economics class filled the entryway of a library with posters on topics such as the lack of public walking paths and bike lanes in the surrounding county and inadequate waste disposal in New York State. A garden started by sculpture and printmaking professors serves as a space for students to learn about plants used to make natural dyes that don’t pollute the environment.  In the business school classroom, Sheridan, the associate professor, had kicked off the student presentations by explaining to an audience that included campus facilities managers and local green business leaders how the course, called Introduction to Managing Sustainability, originated when grad students pitched the idea in 2015. The projects are powered by a “green revolving fund,” which accumulates money from cost savings created by past projects, such as reusable to-go containers and LED lightbulbs in campus buildings. Currently the fund has about $30,000.  Michael Sheridan’s classes at SUNY New Paltz include a course that engages business students in designing proposals for greening the campus. Yunuen Bonaparte for The Hechinger Report “This class has two overarching goals,” said Sheridan, who studied anthropology and sustainable development as an undergraduate before pursuing a doctorate in business. The first is to localize the United Nations global goals for advancing sustainability, he said, and the second is “to prove that sustainability initiatives can be a driver for economic growth.”  In addition to the solar canopy project, students presented proposals for developing a reusable water bottle program, creating a composter and garden, digitizing dining hall receipts and organizing a bikeshare. They gamely fielded questions from the audience, many of whom had served as mentors on their projects. Jonathan Garcia, a third-year business management major on the composting team, said later that he’d learned an unexpected skill: how to deal with uncooperative colleagues. “We had an issue with one of our teammates who just never showed up, so I had to manage that, and then people elected me leader of the group,” he said later. “I learned a lot of team-management skills.” The solar panel team had less drama. Its members interviewed representatives from the New York State Energy Research and Development Authority, Central Hudson Gas & Electric and a local company, Lighthouse Solar, along with Mitten and other campus officials. Often, they met three times a week to research and discuss their proposal, participants said. Lominski, the senior, plans to enroll this fall in a graduate program at the SUNY College of Environmental Science and Forestry, in Syracuse. Before Sheridan’s class, he said, he had little specific knowledge of how solar panels worked. The course also helped him refine his project management and communication skills, he said.  Read Next Chicago teachers demand climate solutions in their next contract Juanpablo Ramirez-Franco His solar panel teammate Madeleine Biles, a senior majoring in management, transferred to New Paltz from SUNY Binghamton before her sophomore year because she wanted a school that felt more aligned with her desire to work for a smaller, environmentally minded business.  An avid rock climber whose parents were outdoor educators, she’d developed some financial skills in past business classes, she said, but the exercises had always felt theoretical. This class made those lessons about return on investment and internal rate of return feel concrete. “Before it was just a bunch of formulas where I didn’t know when or why I would ever use them,” she said.  This summer, Biles is interning with the Lake George Land Conservancy and hopes to eventually carve out a career protecting the environment. While she said she feels fortunate that her hometown of Lake George, in New York’s Adirondack region, isn’t as vulnerable as some places to climate change, the crisis weighs on her.  “I think if I have a career in sustainability, that will be my way of channeling that frustration and sadness and turning it into a positive thing,” she said.  She recently got a taste of what that might feel like: In an email from Sheridan, she learned that her team’s canopy project was chosen to receive the startup funding. The school’s outgoing campus facilities chief signed off on it, and, pending approval from the department’s new leader, the university will begin the process of constructing it. “It’s cool to know that something I worked on as a school project is actually going to happen,” said Biles. “A lot of students can’t really say that. A lot of projects are kind of like simulations. This one was real life.”  This story was produced by The Hechinger Report, a nonprofit, independent news organization focused on inequality and innovation in education. Sign up for their higher education newsletter. This story was originally published by Grist with the headline How colleges can become ‘living labs’ for combating climate change on Jul 30, 2024.

Professors are increasingly combining classroom instruction with efforts to "green" campuses.

At the end of a semester that presaged one of the hottest summers on record, the students in associate professor Michael Sheridan’s business class were pitching proposals to cut waste and emissions on their campus and help turn it into a vehicle for fighting climate change.

Flanking a giant whiteboard at the front of the classroom, members of the team campaigning to build a solar canopy on a SUNY New Paltz parking lot delivered their pitch. The sunbaked lot near the athletic center was an ideal spot for a shaded solar panel structure, they said, a conduit for solar energy that could curb the campus’s reliance on natural gas. 

The project would require $43,613 in startup money. It would be profitable within roughly five years, the students said. And over 50 years, it would save the university $787,130 in energy costs.

“Solar canopies have worked for other universities, including other SUNY schools,” said Ian Lominski, a graduating senior who said he hopes to one day work for the New York State Department of Environmental Conservation. “It’s well within the realm of possibility for SUNY New Paltz.” 

Sheridan’s course is an example of an approach known as “campus as a living lab,” which seeks to simultaneously educate students and reduce the carbon footprint of college campuses. Over the past decade, a growing number of professors in fields as diverse as business, English and the performing arts have integrated their teaching with efforts to minimize their campuses’ waste and emissions, at a time when human-created climate change is fueling dangerous weather and making life on Earth increasingly unstable. 

The State University of New York at New Paltz is among a growing number of higher education institutions where professors are using the “campus as a living lab” to teach students to reduce carbon emissions. Yunuen Bonaparte for The Hechinger Report

Engineering students have helped retrofit buildings. Theater students have produced no-waste productions. Ecology students have restored campus wetlands. Architecture students have modeled campus buildings’ airflow and worked to improve their energy efficiency. The efforts are so diverse that it’s difficult to get a complete count of them, but they’ve popped up on hundreds of campuses around the country.

“I think it’s a very, very positive step,” said Bryan Alexander, a senior scholar at Georgetown University and author of the book Universities on Fire: Higher Education in the Climate Crisis. “You’ve got the campus materials, you’ve got the integration of teaching and research, which we claim to value, and it’s also really good for students in a few ways,” including by helping them take action on climate in ways that can improve mental health.

That said, the work faces difficulties, among them that courses typically last only a semester, making it hard to maintain projects. But academics and experts see promising results: Students learn practical skills in a real-world context, and their projects provide vivid examples to help educate entire campuses and communities about solutions to alleviate climate change.

From the food waste students and staff produce, to emissions from commuting to campus and flying to conferences, to the energy needed to power campus buildings, higher education has a significant climate footprint. In New York, buildings are among the single largest sources of carbon emissions — and the State University of New York system owns a whopping 40 percent of the state’s public buildings. 

Andrea Varga talks with honors students at SUNY New Paltz after they’ve made presentations as part of her Ethical Fashion course. Yunuen Bonaparte for The Hechinger Report

About 15 years ago, college leaders began adding “sustainability officers” to their payrolls and signing commitments to achieve carbon neutrality. But only a dozen of the 400 institutions that signed on have achieved net-zero emissions to date, according to Bridget Flynn, senior manager of climate programs with the nonprofit Second Nature, which runs the network of universities committed to decarbonizing. (The SUNY system has a goal of achieving net-zero emissions by 2045, per its chancellor, John B. King Jr.) 

Campus sustainability efforts have faced hurdles including politics and declining enrollment and revenue, say experts. “Higher ed is in crisis and institutions are so concerned about keeping their doors open, and sustainability is seen as nice to have instead of essential,” said Meghan Fay Zahniser, who leads the Association for the Advancement of Sustainability in Higher Education. 

But there’s change happening on some campuses, she and others noted. At Dickinson College, in Pennsylvania, a net-zero campus since 2020, students in statistics classes have run data analyses to assess why certain buildings are less efficient than others. Psychology students studying behavior change helped the campus dining hall adopt a practice of offering half, full and double portions to cut down on food waste. Physics students designed solar thermal boxes to boost renewable biogas production on an organic farm owned by the college. 

Neil Leary, associate provost and director of the college’s Center for Sustainability Education, teaches classes in sustainability. Last fall’s students analyzed climate risks and resilience strategies for the campus and its surrounding county and then ran a workshop for community members. Among the recommendations emerging from the class: that athletic coaches and facilities staff receive training on heat-related health risks. 

A bike station sits next to trees.
A bike repair station at SUNY New Paltz. Yunuen Bonaparte for The Hechinger Report

Similarly, at SUNY Binghamton, Pamela Mischen, chief sustainability officer and an environmental studies professor, teaches a course called Planning the Sustainable University. Her students, who come from majors including environmental studies, engineering and pre-law, have helped develop campus green purchasing systems, started a student-run community garden and improved reuse rates for classroom furniture. 

And across the country, at Weber State University in Utah, students have joined the campus’s push toward renewable energy. Engineering students, for example, helped build a solar-powered charging station on a picnic table. A professor in the school’s construction and building sciences program led students in designing and building a net-zero house. 

On the leafy SUNY New Paltz campus about 80 miles north of Manhattan, campus sustainability coordinator Lisa Mitten has spent more than a decade working to reduce the university’s environmental toll. Among the projects she runs is a sustainability faculty fellows program that helps professors incorporate climate action into their instruction. 

One day this May, Andrea Varga, an associate professor of theatre design and a sustainability fellow, listened as the students in her honors Ethical Fashion class presented their final projects. Varga’s class covers the environmental harms of the global fashion industry (research suggests it is responsible for at least 4 percent of greenhouse emissions worldwide, or roughly the total emissions of Germany, France and the United Kingdom combined). For their presentations, her students had developed ideas for reducing fashion’s toll, on the campus and beyond, by promoting thrifting, starting “clothes repair cafes,” and more. 

Microplastic filters in the Esopus Hall dormitory laundry room at SUNY New Paltz. Yunuen Bonaparte for The Hechinger Report

Jazmyne Daily-Simpson, a student from Long Island scheduled to graduate in 2025, discussed expanding a project started a few years earlier by a former student, Roy Ludwig, to add microplastic filters to more campus washing machines. In a basement laundry room in Daily-Simpson’s dorm, two washers are rigged with the contraptions, which gradually accumulate a goopy film as they trap the microplastic particles and keep them from entering the water supply.

Ludwig, a 2022 graduate who now teaches Earth science at Arlington High School about 20 miles from New Paltz, took Varga’s class and worked with her on an honors project to research and install the filters. A geology major, he’d been shocked that it took a fashion class to introduce him to the harms of microplastics, which are found in seafood, breast milk, semen and much more. “It’s an invisible problem that not everyone is thinking about,” he said. “You can notice a water bottle floating in a river. You can’t notice microplastics.”

Around campus, there are other signs of the living lab model. Students in an economics class filled the entryway of a library with posters on topics such as the lack of public walking paths and bike lanes in the surrounding county and inadequate waste disposal in New York State. A garden started by sculpture and printmaking professors serves as a space for students to learn about plants used to make natural dyes that don’t pollute the environment. 

In the business school classroom, Sheridan, the associate professor, had kicked off the student presentations by explaining to an audience that included campus facilities managers and local green business leaders how the course, called Introduction to Managing Sustainability, originated when grad students pitched the idea in 2015. The projects are powered by a “green revolving fund,” which accumulates money from cost savings created by past projects, such as reusable to-go containers and LED lightbulbs in campus buildings. Currently the fund has about $30,000. 

A bearded man with long hair tied back stands in front of a tree.
Michael Sheridan’s classes at SUNY New Paltz include a course that engages business students in designing proposals for greening the campus. Yunuen Bonaparte for The Hechinger Report

“This class has two overarching goals,” said Sheridan, who studied anthropology and sustainable development as an undergraduate before pursuing a doctorate in business. The first is to localize the United Nations global goals for advancing sustainability, he said, and the second is “to prove that sustainability initiatives can be a driver for economic growth.” 

In addition to the solar canopy project, students presented proposals for developing a reusable water bottle program, creating a composter and garden, digitizing dining hall receipts and organizing a bikeshare. They gamely fielded questions from the audience, many of whom had served as mentors on their projects.

Jonathan Garcia, a third-year business management major on the composting team, said later that he’d learned an unexpected skill: how to deal with uncooperative colleagues. “We had an issue with one of our teammates who just never showed up, so I had to manage that, and then people elected me leader of the group,” he said later. “I learned a lot of team-management skills.”

The solar panel team had less drama. Its members interviewed representatives from the New York State Energy Research and Development Authority, Central Hudson Gas & Electric and a local company, Lighthouse Solar, along with Mitten and other campus officials. Often, they met three times a week to research and discuss their proposal, participants said.

Lominski, the senior, plans to enroll this fall in a graduate program at the SUNY College of Environmental Science and Forestry, in Syracuse. Before Sheridan’s class, he said, he had little specific knowledge of how solar panels worked. The course also helped him refine his project management and communication skills, he said. 

His solar panel teammate Madeleine Biles, a senior majoring in management, transferred to New Paltz from SUNY Binghamton before her sophomore year because she wanted a school that felt more aligned with her desire to work for a smaller, environmentally minded business. 

An avid rock climber whose parents were outdoor educators, she’d developed some financial skills in past business classes, she said, but the exercises had always felt theoretical. This class made those lessons about return on investment and internal rate of return feel concrete. “Before it was just a bunch of formulas where I didn’t know when or why I would ever use them,” she said. 

This summer, Biles is interning with the Lake George Land Conservancy and hopes to eventually carve out a career protecting the environment. While she said she feels fortunate that her hometown of Lake George, in New York’s Adirondack region, isn’t as vulnerable as some places to climate change, the crisis weighs on her. 

“I think if I have a career in sustainability, that will be my way of channeling that frustration and sadness and turning it into a positive thing,” she said. 

She recently got a taste of what that might feel like: In an email from Sheridan, she learned that her team’s canopy project was chosen to receive the startup funding. The school’s outgoing campus facilities chief signed off on it, and, pending approval from the department’s new leader, the university will begin the process of constructing it.

“It’s cool to know that something I worked on as a school project is actually going to happen,” said Biles. “A lot of students can’t really say that. A lot of projects are kind of like simulations. This one was real life.” 

This story was produced by The Hechinger Report, a nonprofit, independent news organization focused on inequality and innovation in education. Sign up for their higher education newsletter.

This story was originally published by Grist with the headline How colleges can become ‘living labs’ for combating climate change on Jul 30, 2024.

Read the full story here.
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The Climate Impact of Owning a Dog

My dog contributes to climate change. I love him anyway.

This story originally appeared on Grist and is part of the Climate Desk collaboration.I’ve been a vegetarian for over a decade. It’s not because of my health, or because I dislike the taste of chicken or beef: It’s a lifestyle choice I made because I wanted to reduce my impact on the planet. And yet, twice a day, every day, I lovingly scoop a cup of meat-based kibble into a bowl and set it down for my 50-pound rescue dog, a husky mix named Loki.WIRED's Guide to How the Universe WorksYour weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more. Until recently, I hadn’t devoted a huge amount of thought to that paradox. Then I read an article in the Associated Press headlined “People often miscalculate climate choices, a study says. One surprise is owning a dog.”The study, led by environmental psychology researcher Danielle Goldwert and published in the journal PNAS Nexus, examined how people perceive the climate impact of various behaviors—options like “adopt a vegan diet for at least one year,” or “shift from fossil fuel car to renewable public transport.” The team found that participants generally overestimated a number of low-impact actions like recycling and using efficient appliances, and they vastly underestimated the impact of other personal decisions, including the decision to “not purchase or adopt a dog.”The real objective of the study was to see whether certain types of climate information could help people commit to more effective actions. But mere hours after the AP published its article, its aim had been recast as something else entirely: an attack on people’s furry family members. “Climate change is actually your fault because you have a dog,” one Reddit user wrote. Others in the community chimed in with ire, ridiculing the idea that a pet Chihuahua could be driving the climate crisis and calling on researchers and the media to stop pointing fingers at everyday individuals.Goldwert and her fellow researchers watched the reactions unfold with dismay. “If I saw a headline that said, ‘Climate scientists want to take your dogs away,’ I would also feel upset,” she said. “They definitely don’t,” she added. “You can quote me on that.”Loki grinning on a hike in the Pacific Northwest. Photograph: Claire Elise Thompson/Grist

COP30’s biofuel gamble could cost the global food supply — and the planet

What was once considered a climate holy grail comes with serious tradeoffs. The world wants more of it anyway.

First the plant stalk is harvested, shredded, and crushed. The extracted juice is then combined with bacteria and yeast in large bioreactors, where the sugars are metabolized and converted into ethanol and carbon dioxide. From there, the liquid is typically distilled to maximize ethanol concentration, before it is blended with gasoline.  You know the final products as biofuels — mostly made from food crops like sugarcane and corn, and endorsed by everyone from agricultural lobbyists to activists and billionaires. Biofuels were developed decades ago to be cheaper, greener alternatives to planet-polluting petrol. As adoption has expanded — now to the point of a pro-biofuel agenda being pushed this week at COP30 in Belém, Brazil — their environmental and food accessibility footprint has remained a source of fierce debate.  The governments of Brazil, Italy, Japan, and India are spearheading a new pledge calling for the rapid global expansion of biofuels as a commitment to decarbonizing transportation energy.  Though the text of the pledge itself is vague, as most COP pledges tend to be, the target embedded in an accompanying International Energy Agency report is clear: expand the global use of so-called sustainable fuels from 2024 levels by at least four times, so that by 2035, sustainable fuels cover 10 percent of all global road transport demand, 15 percent of aviation demand, and 35 percent of shipping fuel demand. By Friday, the last official day of COP30, at least 23 countries have joined the pledge — while Brazilian delegates have been working “hand in hand with industry groups” to get language backing biofuels into the final summit deal.  “Latin America, South East Asia, Africa — they need to improve their efficiency, their energy, and Brazil has a model for this [in its rollout of biofuels],” Roberto Rodrigues, Brazil’s special envoy for agriculture at the summit, said on a COP panel last weekend. As of the time of this story’s publication, the pro-biofuel language hadn’t made it into the latest draft text that outlines the main outcome of the summit released Friday — although it appears the summit could end without a deal.  Read Next At COP30 in Brazil, countries plan to armor themselves against a warming world Zoya Teirstein Though scientists continue to experiment with utilizing other raw materials for biofuels — a list which includes agricultural and forestry waste, cooking oils, and algae — the bulk of feedstocks almost exclusively come from the fields. Different types of food crops are used for different types of biofuels; sugary and starchy crops, such as sugar cane, wheat, and corn, are often made into ethanol; while oily crops, like soybeans, rapeseed, and palm oil, are largely used for biodiesel.  The cycle goes a little like this: Farmers, desperate to replace cropland lost to biofuel production, raze more forests and plow up more grasslands, resulting in deforestation that tends to release far more carbon than burning biofuels saves. But as large-scale production continues to expand, there may be insufficient land, water, and energy available for another big biofuel boom — prompting many researchers and climate activists to question whether countries should be aiming to scale these markets at all. (Thomson Reuters reported that global biofuel production has increased ninefold since 2000.) Biofuels account for the vast majority of “sustainable fuels” currently used worldwide. An analysis by a clean transport advocacy organization published last month found that, because of the indirect impacts to farming and land use, biofuels are responsible globally for 16 percent more CO2 emissions than the planet-polluting fossil fuels they replace. In fact, the report surmises that by 2030, biofuel crops could require land equivalent to the size of France. More than 40 million hectares of Earth’s cropland is already devoted to biofuel feedstocks, an area roughly the size of Paraguay. The EU Deforestation-Free Regulation, or EUDR, cites soybeans among the commodities driving deforestation worldwide. “While countries are right to transition away from fossil fuels, they also need to ensure their plans don’t trigger unintended consequences, such as more deforestation either at home or abroad,” said Janet Ranganathan, managing director of strategy, learning, and results at the World Resources Institute in a statement responding to the Belém pledge. She added that rapidly expanding global biofuel production would have “significant implications for the world’s land, especially without guardrails to prevent large-scale expansion of land dedicated to biofuels, which drives ecosystem loss.” Other environmental issues found to be associated with converting food crops into biofuels include water pollution from fertilizers and pesticides, air pollution, and soil erosion. One study, conducted a decade ago, showed that, when accounting for all the inputs needed to produce different varieties of ethanol or biodiesel — machinery, seeds, water, electricity, fertilizers, transportation, and more — producing fuel-grade ethanol or biodiesel requires significantly more energy input than it creates.  Read Next ‘Everyone is exhausted’: First week of COP30 marked by frustration with slow progress Bob Berwyn, Inside Climate News Nonetheless, it’s not a shock to see Brazil betting big on biofuels at COP30. In Brazil, biofuels make up roughly a quarter of transportation fuels — a remarkably high proportion compared to most other countries. And that share, dominated by sugarcane ethanol, is still on an upward climb, with the Belém pledge evidence of the country’s intended trajectory.  A spokesperson from Brazil’s foreign affairs ministry told The Guardian that the “proponents of the pledge (which include Japan, Italy, India, among others) are calling upon countries to support quadrupling production and use of sustainable fuels — a group of gaseous and liquid fuels that include e-fuels, biogases, biofuels, hydrogen and its derivatives.” They added that the goal is based on the new IEA report that underscores the production increase as necessary to aggressively reduce emissions. That report suggests that if current and proposed national and international policies are implemented and fully legislated, global biofuel use and production would double by 2035. “The word ‘sustainable’ is not used lightly, neither in the report nor in the pledge,” the spokesperson said.  The issue, of course, is in how emissions footprints of something like ethanol fuel production are even measured. Much like many other climate sources, scientists argue that tracking greenhouse gas emissions linked to ethanol fuel should account for emissions at every stage — production, processing, distribution, and vehicle use. Yet that isn’t often the case: in fact, a 2024 paper found that Brazil’s national biofuel policy does not account for all direct and indirect emissions in its calculation.  The exclusions are evident of a larger trend, according to University of Minnesota environmental scientist Jason Hill. “Overall, either those studies have not included [direct and indirect emissions], or they found ways to spread those impacts over anticipated production, decades, centuries, or so forth, that tend to dilute those effects. So the accounting methods aren’t really consistent with what the best science shows,” said Hill, who studies the environmental and economic consequences of food, energy, and biofuel production.  In short: More biofuels means either more intensive agriculture on a smaller share of available cropland, which has its own detrimental environmental effects, or expansion of cropland, and the land-use emissions and environmental impacts that can carry. “Biofuel production today is already a bad idea. And doubling [that] is doubling down on an existing problem,” said Hill.  Read Next COP30 has big plans to save the rainforest. Indigenous activists say it’s not enough. Frida Garza & Miacel Spotted Elk Moreover, diverting crops like corn and soybeans from dinner plates to fuel tanks doesn’t just spark brutal competition for land and resources, it can also spike food prices and leave the world’s most vulnerable populations with less to eat.  A 2022 analysis of the U.S. Renewable Fuel Standard, the world’s largest biofuel program, found that it has led to increased food prices for Americans, with corn prices rising by 30 percent and other crops such as soybean and wheat spiking by around 20 percent. This then set off a domino effect: Increasing annual nationwide fertilizer use by up to 8 percent and water quality degradants by up to 5 percent. The carbon intensity of corn ethanol produced under the mandate has ended up at least equaling the planet-polluting effects of gasoline.  “Biofuel mandates essentially create a baseline demand that can leave food crops by the wayside,” says Ginni Braich, a data scientist at the University of Colorado Boulder who has worked as a senior advisor to government clean technology and emission reduction programs. That’s because of the issue with supply and demand of food crops — higher competition for feedstocks hikes up the prices of food, feed, and farming inputs.  When there are biofuel mandates, which the IEA report underlying the Belém pledge recommends, demand remains inelastic — no matter the changes in yields, growing and weather conditions, prices, or markets. Say there is a huge drought that decimates crop yields, as one example, the baseline demand of biofuels still needs to be met despite depleted food stocks. In terms of supply, increasing growing area for biofuels typically means less area available to grow food crops — which can cause prices to surge alongside supply shortages, and spike costs of seed, inputs, and land. Nutritional implications should also be taken into account, according to Braich. Not only do people’s diets tend to shift when food gets more costly, but cropping patterns are already revealing adverse shifts in dietary diversity, which could be exacerbated by a further concentration on fewer crops. The Belém pledge, and Brazil’s intention to lead a global expansion of the biofuels market, does not bode well for people’s food accessibility nor for the future of the planet, warns Braich.  “It seems quite paradoxical for Brazil to promote the large-scale expansion of biofuels and also be seen as a protector of forests,” she said. “Is it better than decarbonization and fossil fuel divestment rhetoric without actual transition pathways? Yes, but in a lot of ways it is also greenwashing.” This story was originally published by Grist with the headline COP30’s biofuel gamble could cost the global food supply — and the planet on Nov 21, 2025.

Iran's Capital Has Run Out of Water, Forcing It to Move

The decision to move Iran’s capital is partly driven by climate change, but experts say decades of human error and action are also to blame

November 21, 20252 min readIran's Capital Is Moving. The Reason Is an Ecological CatastropheThe move is partly driven by climate change, but experts say decades of human error and action are also to blameBy Humberto Basilio edited by Claire CameronA dry water feature in Tehran on November 9, 2025 TTA KENARE/AFP/Getty ImagesTehran can no longer remain the capital of Iran amid a deepening ecological crisis and acute water shortage.The situation in Tehran is the result of “a perfect storm of climate change and corruption,” says Michael Rubin, a political analyst at the American Enterprise Institute.“We no longer have a choice,” Iranian President Masoud Pezeshkian reportedly told officials on Friday.On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.Instead, Iranian officials are considering moving the capital to the country’s southern coast. But experts say the proposal does not change the reality for the nearly ten million people who live in Tehran, who are now suffering the consequences of a decades-long decline in water supply.Since at least 2008, scientists have warned that unchecked groundwater pumping for the city and for agriculture was rapidly draining its aquifers. The overuse did not just deplete underground reserves—it destroyed them, as the land compressed and sank irreversibly. One recent study found that Iran’s central plateau, where most of the country’s aquifers are located, is sinking by more than 35 centimeters each year. As a result, the aquifers lose about 1.7 billion cubic meters of water annually as the ground is permanently crushed, leaving no space for underground water storage to recover, says Darío Solano, a geoscientist at the National Autonomous University of Mexico.“We saw this coming,” says Solano.Other major cities like Cape Town, Mexico City, Jakarta and parts of California are also facing day zero scenarios as they sink and run out of water.This is not the first time Iran’s capital has moved. Over the centuries, it has shifted many times, from Isfahan to Tabriz to Shiraz. Some of these former capitals still thrive while others exist only as ruins, says Rubin. But this marks the first time the Iranian government has moved the capital because of an ecological catastrophe.Yet, Rubin says, “it would be a mistake to look at this only through the lens of climate change.” Water, land and wastewater mismanagement and corruption have made the crisis worse, he says. If the capital moves to the remote Makran coast in the south, it could cost more than $100 billion dollars. The region is known for its harsh climate and difficult terrain, and some experts have doubts about its viability as a national center. Relocating a capital is often driven more by politics than by environmental concerns, says Linda Shi, a social scientist and urban planner at Cornell University. “Climate change is not the thing that is causing it, but it is a convenient factor to blame in order to avoid taking responsibility” for poor political decisions, she says.It’s Time to Stand Up for ScienceIf you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

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