The latest news on ethanol
Environmental groups are unhappy with his support of corn-based ethanol during the campaign.
Obama supports biofuels, but competing interests are fighting over the course of ethanol policy.
Proponents contend higher levels could displace foreign oil, but car makers fret about engine damage.
Agency insists that ethanol rules have only slight affect on price of corn.
How U.S. farming policy leads to 'dead zones,' huge marine areas where nothing can grow.
The food-vs.-fuel debate rings hollow since Brazilians say they have the capacity to produce both.
An upcoming U.N. meeting is likely to question America's ethanol policy and how it gives aid.
Sharp price hikes are hurting the poor and sparking violence
There's a need to pursue both ethanol and electricity.
The hunt for alternative fuels reveals how appealing gasoline really is.