The editors at Nature discover that corn ethanol sucks:

Biofuels are unlikely ever to be more than bit-players in the great task of weaning civilization from Earth's coal-mine and oil-well teats. But they may yet have valuable niches -- including some that allow them to serve some of the world's poor, both as fuels for their own use and as exports. Provided, that is, that someone kills king corn (Click to read).