Ethanol made from corn kernels has replaced only about 3 percent of the nation's gasoline. Now, scientists are focusing on a new type of the gasoline additive, made from agricultural wastes and plant residues - a potentially vast supply of material known as biomass.
SOURCES: VeraSun Energy, Iogen | GRAPHIC: Laura Stanton and Karen Yourish, The Washington Post - June 22, 2006
