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Hi,
I heard recently that diesel from soybeans still lets the resulting material be used for stock feed. Soy can also be made into biodegradable plastics.
Jatophra, a fast growing willow tree, sunflowers, corn stalks, animal manure, human sewage, compost, and I'm sure that there are other things that can produce biodiesel, alcohol, methane, etc. or used in co-generation plants.
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