Iowa is the largest corn producer in the U.S.—and the second largest producer of nitrate pollution in the Mississippi River…
Algae floats on the surface of Lake Erie's Maumee Bay in Oregon, Ohio, on Friday, Sept. 15, 2017. Chemicals and…
Saturated buffer along unnamed tributary to the Skunk River, Iowa. Photo by Kent Heikens USDA, Agricultural Research Service. Fertilizer used…
John Doyle watches Apsaalooke children play in the Little Bighorn River at Crow Agency, Mont. Despite the summer heat, children…
Marc Alperin with UNC-CH Marine Sciences examines a sediment core collected from the bottom of Jordan Lake. (Photo Credit: UNC…