Turning prairies into gas: study finds U.S. biofuel production has big impacts on grasslands

Corn and soybean cultivation soared in the late 2000s, as U.S. agribusiness rushed to respond to federal legislation rewarding biofuels production. Debate since the institution of the program has centered on the question of whether biofuel crop expansions have come at the expense of plowed-under biodiverse grasslands and prairie ecosystems. A new study largely settles that argument.