Sure, we all know about the asteroid impact that is thought to have wiped out the dinosaurs, but did you know that the Earth ...

Decades of acid rain generated by power-plant emissions have ... For months I'd been on the trail of the greatest natural disaster in Earth's history. About 250 million years ago, at the end ...

sparked acid rain and exposed life to harmful ultraviolet radiation from the Sun. They believe a supernova explosion close to Earth could be to blame for both the late Devonian and Ordovician ...

The problem in the 1980s was that American power plants were sending up vast clouds of sulfur dioxide, which was falling back to earth in the form of acid rain, damaging lakes, forests and ...