Montana's lawsuit against Yellowstone's bison plan contradicts park scientists' research on population sustainability and habitat impact. Conservation concerns mount.

This is the third lawsuit to be filed in the wake of Yellowstone revising its bison management plan last year.

Bison — which most tribes refer to as buffalo — are an essential part of many Plains tribes' cultural and spiritual life. Now ...

National Park Service Director Chuck Sams, an Oregonian, talks about everything from representation to reservations as he ...