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If the gov't subsidies to NOT grow crops were replaced by gov't biofuel programs (not subsidies, I hate welfare programs)we might see the cost of biofuels drop significantly. If fact, if a non-food crop could be grown as a primary biofuel supply food crop prices would be minimally affected.
I think I watched expecting something more on the lines of Elegant Universe, which was something much different. I should have spent those two hours studying for my multivariate calc test in the morning.