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This photo from Aug. 1, 2012, shows a drought damaged ear of corn in Westfield, Ind., corn field. U.S. corn growers could have their worst crop in a generation as the harshest drought in decades takes its toll, the government reported Friday, Aug. 10, 2012, as it forecast the lowest average yield in 17 years. (AP Photo/Michael Conroy, File)

This photo from Aug. 1, 2012, shows a drought damaged ear of corn in Westfield, Ind., corn field. U.S. corn growers could have their worst crop in a generation as the harshest drought in decades takes its toll, the government reported Friday, Aug. 10, 2012, as it forecast the lowest average yield in 17 years. (AP Photo/Michael Conroy, File)

U.S. drought crisis

September 3, 2012

Triple-digit temperatures and weeks without rain withered and destroyed many crops in the Midwest, sending commodity soybean and grain prices soaring in 2012.