Corn

The fact that corn-based ethanol is renewable doesn’t make it sustainable. When will presidential candidates stumping in Iowa admit as much?

• By Jeff Turrentine

A new survey reveals that biofuel crops have expanded onto millions of acres of new land, with serious consequences for the environment.

• By Nathan Collins

It may be better than the alternative, but it’s entirely disingenuous for producers and consumers to justify eating grass-fed beef on the essentialist grounds that it was “meant to be” that way.

• By James McWilliams

Even as corn prices rise with the demand for biofuels, a simmering dispute percolates in Mexico where genetically modified imports from the U.S. are both welcomed and damned.

• By Melinda Burns