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WASHINGTON — The widespread use of ethanol from corn could result in nearly twice the greenhouse-gas emissions as the gasoline it would replace because of unexpected land-use changes, researchers concluded Thursday. The study challenges the rush to biofuels as a response to global warming.
The researchers, affiliated with Princeton University and other institutions, said past studies showing the benefits of ethanol in combating climate change have not taken into account almost certain changes in land use worldwide if ethanol from corn, and in the future from other feedstocks such as switchgrass, becomes a prized commodity.
