Biofuels

Lester Brown, agricultural economist and founder of the Earth Policy Institute as well as the Worldwatch Institute, warns of an impending famine as competition stiffens for food and fuel.

"The stage is now set for direct competition for grain between the 800 million people who own automobiles, and the world's 2 billion poorest people. The risk is that millions of those on the lower rungs of the global economic ladder will start falling off as rising food prices drop their consumption below the survival level."

Read his report to U.S. Congress here.