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Comment Re:This solves nothing (Score 2) 233

It depends on what the feedstock is. A good example of a bad feedstock is corn for ethanol, it takes a lot of land, water and fertilizer. The fertilizer itself takes a good deal of fuel to make and transport and really cuts into the effectiveness of reducing fuel consumption. But it's still economically viable because of the corn subsidies, so we still have it.
Some examples of better feedstock might be switch grass or algae, though I'm sure there are major concerns with those as well, or we'd be seeing more of them.

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