The current Energy Secretary, Steven Chu, is no fan of corn-based ethanol, presumably because a variety of studies have suggested that it takes a significant amount of energy to produce, diluting its impact on carbon emissions. Nevertheless, the Energy Independence and Security Act sets hard targets for ethanol produced from biofuels, and the US has largely met those through corn-based ethanol …
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Water used for corn ethanol shows potential for waste (Ars Technica)
