Environmental and Energy Consequences of Using Corn Ethanol as a Biofuel

William Appel
Corn ethanol is viewed by many supporters as a sustainable fuel that can replace gasoline, reduce greenhouse gas emissions relative to fossil fuels, and increase energy security. Unfortunately, these claims are not supported by production practices. Corn ethanol is more expensive than gasoline. Its production and use results in higher carbon emissions than gasoline and causes additional environmental concerns such as eutrophication, soil erosion, land use change, and air and water pollution. The net energy...
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