The Environmental Protection Agency has granted a petition by the Eastern Shoshone and Northern Arapaho tribes to be treated in a manner similar to states under the Clean Air Act...

Industrially generated soot in the 19th century appears to have sparked the melting of glaciers in the Alps and put a halt to what’s known as the Little Ice Age, a new study has fo...

The electricity delivery from the Navajo Generating Station will continue well into the future – while achieving significant air pollution reductions...