Few places on Earth inspire as much awe as Arizona's Grand Canyon. This massive chasm, carved over millions of years by the ...

While a cold, winter storm drenched most of San Diego County on Thursday, the mountain ranges were getting a fresh dusting of ...

In the heart of Utah’s Uinta Mountains, a team of scientists is re-creating historical pictures to study how much, and how quickly, ecosystems are changing.

A wild jaguar has been photographed by federally run trail cameras in southern Arizona’s Huachuca Mountains at least twice this year. A U.S. Fish and Wildlife Service database that tracks jaguar ...