All that feed corn and all those soybeans—and those nearly 25 million hogs—produce a lot of nitrate. It’s making Iowans sick ...

Already, the new kelp is helping the ecosystem show glimpses of its former self. During a recent dive, a plump sunflower sea ...

A government-funded survey of the entire Gulf of Mexico last summer found more sick fish in the area of the 2010 oil spill than anywhere else, according to the top University of South ...