Close to 20 percent of Americans are exposed to water polluted with high levels of potentially cancer-causing nitrates, known to come mostly from agricultural runoff, according to new research ...

Nitrogen pollution could intensify global water scarcity threefold by 2050, scientists warn in a recently published paper. In addition, “newly emerging pollutants,” such as microplastics, heavy metals ...

The agency also said it would delay the implementation of an air pollution rule for cars and trucks by two years. By Maxine Joselow Reporting from Washington The Environmental Protection Agency on ...