The Future of Biofuels and the Weather

The call for energy independence — and a federal mandate to increase use of renewable fuels – has farmers and scientists looking to new biofuel crops like switchgrass. But these new crops need water and they also may affect the water cycle. IEEE Spectrum’s Lisa Raffensperger reports on a team at Iowa State University that is studying computer models to see how biofuels may change the agricultural landscape and the weather.