Scientists Call on Global Leaders to Limit Crop Biofuels Ahead of COP30 - CleanTechnica

Ahead of the COP30 climate negotiations in Belém, Brazil, nearly 100 scientists, including members of the Union of Concerned Scientists, have signed a letter urging global leaders to limit the expansion of crop-based biofuels. The call comes as Brazil promotes a pledge to quadruple the use of "sustainable fuels," including doubling biofuel consumption, as part of climate action efforts. However, scientific evidence indicates that biofuels currently produce on average 16% more greenhouse gas emissions than the fossil fuels they replace. By 2030, biofuels are projected to emit an additional 70 million tons of CO₂ equivalent annually—comparable to adding 30 million diesel cars to the roads. The letter highlights significant environmental and social risks associated with expanding biofuels, including damage to biodiversity-rich regions, depletion of scarce water resources, increased agricultural runoff, and exacerbation of global hunger through higher food prices and volatility. The scientists warn that this expansion risks repeating the destructive "biofu