Reports of disappearing glaciers, shrinking arctic ice, rising sea levels, stronger hurricanes, and unprecedented European heat waves combined with an inexorable buildup in atmospheric carbon dioxide levels is increasing pressure on governments to respond with new greenhouse gas initiatives. California and other states are providing policy leadership in the United States
Babcock, Bruce A.; Rubin, Ofir; and Feng, Hongli
"Is Corn Ethanol a Low-Carbon Fuel?,"
Iowa Ag Review: Vol. 13
, Article 1.
Available at: http://lib.dr.iastate.edu/iowaagreview/vol13/iss4/1