Apparently, there's a World Bank report that concludes that biofuels are responsible for as much as 75% of the rise in global food prices, and not the 3% that the U.S. government regularly claims. It'll be interesting to see if that report makes it into a discussion later this afternoon in Aspen, where Vinod Khosla, one of the world's biggest VC investors in biofuels, will square off against Ford Runge, the scientist who figured out that ethanol production was a net carbon emitter.

There seems to a consensus among producers and consumers of ethanol that the future of the stuff lies in cellulosic exploitation rather than sugar cane or corn.

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