The state filed its lawsuit at the end of last year, arguing Montana’s concerns were not properly addressed in Yellowstone's new bison management plan and that the analysis was flawed.

Grant signed the bill creating Yellowstone Park, the first national park in the history of ... while hunters slaughtered the park's elk. Superintendent Langford was conspicuous by his absence ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...

National parks have a set of rules to protect patrons, animals, and fragile landmarks. Video captures woman attempting to pet ...

A group of Yellowstone visitors have been criticized online after taking photos of a bear well within the recommended distance.

Bison jams are not uncommon in Yellowstone given their population at the park has ranged from 3,500 to nearly 6,000, the National Park Service says.