A guide in Yellowstone National Park has captured extraordinary footage showing a grizzly bear and her cubs chasing a wolf ...

The streams were closed to all fishing on July 12 due to low flows and high water temperatures that stress trout.

Free-moving herds of migratory bison in Yellowstone National Park are stimulating the regrowth of flourishing grasslands and reshaping ecosystems, a new study has found. Contrary to conventional ...