Researchers found Glacier National Park's mountain goats have declined by 45%.

A careful plan to restore beavers and willows ecology to Rocky Mountain National Park's Kawuneeche Valley is showing progress ...

Some wildlife watchers are publicly "mourning the loss" of the aging bull that others say probably wouldn't have survived the ...

Colorado's national parks are stunning, but its state parks are nothing to scoff at. This relatively unknown park feels ...

A Colorado attorney has proposed 97 new names for Colorado peaks, including changing the name of Longs Peak in Rocky Mountain National Park ...

Out west, the Rocky Mountains play a major role in winter weather across North America. But do the Smokies do the same for ...

Denver protesters kept the fight alive against President Donald Trump and ICE into spring, but the spirit of resistance in ...

From waterfalls to unusual formations, Pennsylvania offers natural wonders that feel almost unreal once you experience them ...

From luxury ski resorts to remote rural retreats and historic fortresses, discover what our planet's most picturesque high ...

Venture beyond the usual spots in Pennsylvania and find hidden trails, forests, and nature adventures that feel like a true ...

Local officials said the signs warning of exposure to radioactive materials are in response to public concern.