Downpours killed fish, destroyed forests, eroded statues, and damaged buildings, sparking public outcry. “Acid rain is a particularly alarming demonstration of the simple adage that what goes up ...

A new threat is here, and scientists say there's no way to stop it, as even remote parts of the world are seeing microplastic ...

Pennsylvania is a leader in acid rain in the U.S. Acid rain has long been known to be a threat to streams, forests and human health. The 1990 Clean Air Act, which targeted key pollutants ...