19 / 32

This photo from July 31, 2012 shows dried corn plants in Yutan, Neb. 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. 1, 2012, as it forecast the lowest average yield in 17 years. (AP Photo/Nati Harnik, File)

This photo from July 31, 2012 shows dried corn plants in Yutan, Neb. 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. 1, 2012, as it forecast the lowest average yield in 17 years. (AP Photo/Nati Harnik, File)

U.S. drought crisis

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