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Is Corn Based Ethanol More Eco-Friendly Than Gas?

Portrait of a corn field in PennsylvaniaAfter at least a year of going back and forth on the ethanol debate, the University of Minnesota has published research indicating that corn-based ethanol is actually worse for the environment than conventional gasoline. Apparently, the water, fertilizer, farm machinery, and distillation process required to turn king corn into fuel grade ethanol is more "costly" -- defined by a variety of health and environmental factors -- than cellulosic ethanol or gasoline.

Keep in mind that this study focused only on corn ethanol, cellulosic ethanol, and gasoline, and not on any other form of biofuels (so don't get down in the mouth, hemp-diesel fans). Does this mean that there's no way to redeem corn ethanol? Many ethanol defenders are rallying the troops to debunk the research, claiming that it didn't factor in many of the ways ethanol production could be greener, such as using renewable energy to power the distillation. In fact, there are even hybrid tractors that could help cut the level of particulate matter released during the harvest. Still, in lieu of those costly changes in production, corn ethanol is credited with enlarging the Gulf dead zone, raising food prices, and not providing any environmental benefit over gas -- and it consumed 66% of US renewable energy subsidies in 2007.

[via AutoBlogGreen]

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