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Aggregating Energy Since 2006

CSM opinion on ethanol

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Anyone have any thoughts on the accuracy of the stats in this article? I'm especially interested in the comparison between the Cato Institute's claim that "it takes the equivalent of seven barrels of oil to produce eight barrels of corn-derived ethanol" and the Argonne National Laboratory's finding that "for each unit of energy to grow, process & transport corn ethanol, it yields 1.35 units of energy." Seems to be a bit of a disparity there...