U.S. presidential-hopeful Senator Barack Obama, along with Iowa Senator Tom Harkin, introduced legislation this week calling for a National Low Carbon Fuel Standard (NLCFS). The bill recognizes the steady growth of the U.S. renewable fuels market, including corn-based ethanol, cellulosic ethanol and biodiesel as key components in the fight against global warming.

"Expanding the renewable fuels market in the United States will reduce our dependence on foreign oil, revitalize our agricultural sector, and provide a sustainable means to combat global warming. A homegrown solution to the international climate crisis lies in America's fields and farms." -- U.S. Senator Barack Obama, D-IL