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 ...

Acid rain is one of the most destructive environmental threats to forests and their inhabitants. From weakening trees to harming wildlife, this invisible danger is reshaping entire ecosystems.

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 ...

Their leaves form a layer that blocks out light and acts like a giant umbrella, intercepting rain. Deciduous forests are rich in wildlife. The smaller birds tend to nest in the sub-canopy ...