Question Environmental Impact of Corn Ethanol Growth
|January 28, 2009|
by government policies mandating ethanol use, Iowa has become the country's leading
producer of corn ethanol. But now many scientists say that corn ethanol produces
almost as many greenhouse gas emissions as gasoline, and they worry about the
environmental effects of using so much land to grow corn.
Climate scientist and Weather Channel correspondent Heidi Cullen reports for Climate
Central and the NewsHour on the controversy over corn ethanol.