ad moreRELATED ???POST PROFILESHARE ???Plowing prairies for grains: Biofuel crops replace grasslands nationwide3 weeks agoAcademics / General Science : Science DailyClearing grasslands to make way for biofuels may seem counterproductive, but researchers show that crops, including the corn and soy commonly used for biofuels, expanded onto 7 million acres of new land in the U.S. over a recent four-y