Gas stations across Iowa, like this Casey's General Store in Des Moines, boast ethanol as "cleaner air for Iowa."
Clay Masters/Iowa Public Radio
October 27, 2015 Candidates' waning interest in the corn fuel shows that Iowa's role in shaping policy debates may be declining.
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The EPA proposes reducing the requirement for ethanol-blended gasoline.
Joe Raedle/Getty Images
November 15, 2013 The draft rule would roll back the 2014 requirement for renewables from 18.15 billion gallons to between 15 billion and 15.52 billion gallons.
A sign on the pump advertises the ethanol content of the gasoline as a motorist reaches for the gas pump in his truck at a filling station in Bellmead, Texas.
November 16, 2012 The Environmental Protection Agency says it won't waive a law that requires much of the nation's corn to be refined into ethanol and blended into gasoline. Meat producers say this will drive up food prices, but the EPA says the "ethanol mandate" isn't at fault.
October 5, 2012 Researchers recently calculated the theoretical food value of the ethanol in a gas tank. At the heart of the calculation is this: Should we burn so much food as fuel? And how will it impact food prices and the world's poor?
Stunted corn grows in a field next to a cattle feed lot in rural Springfield, Omaha, Neb.
July 19, 2012 Livestock and chicken farmers say the government's ethanol policy inflates fuel prices and forces them to compete with fuel companies for corn the fuel companies don't even want. This year, gas companies are required to buy 13 billion gallons of ethanol.
June 16, 2011 Worries about deficits and debt haven't exactly changed everything. Senators from corn-producing states still voted against the legislation to would end the tax breaks that keep the Treasury Department from collecting about $5 billion a year more than it would otherwise.
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