A man is missing in Colorado, and he was last seen in Rocky Mountain National Park. The park is asking for help finding Blake Kieckhafer.

A college student was sitting on a bench reading in Arcata Community Forest when a mountain lion suddenly appeared. Watch here.

Health officials have found not one or two but four “rare” and “exotic” tick species in this U.S. state. Learn how to protect yourself.

A month after a young American hiker went solo into the Pyrenees, authorities found his body in Ordesa y Monte Perdido National Park.

“In the realm of the white whale it’s easy for even a sea bear to feel out of place.” Watch a polar bear swim amongst a pod of belugas.