“What was once a disease that was primarily limited to the Southwestern United States would become a disease of the Western United States,” Gorris said. A map showing the predicted spread of ...

Stretching from the southwestern United States deep into the Central Mexican Highlands ... are endangering the survival of wildlife and people living in this unique environment. Extending from the ...

As destructive as the West's biggest fires are, their flames still reach fewer places than wildfires touched historically. That's a problem.

This tiny, highly endangered songbird depends on the increasingly rare and threatened streamside forests of the arid southwestern United States. The groups intervened to defend the U.S. Fish and ...