Gray wolves were reintroduced in Yellowstone National Park in 1995 to help control the numbers of elk that were eating young ...

For the first time in 80 years, a new generation of fully-fledged aspen trees has grown in Yellowstone’s northern range.

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, ...

Yellowstone National Park is celebrating an ecological milestone along with a key anniversary this summer, Oregon State ...

As Colorado’s gray wolf population increases with four new groups of pups, the reintroduced animals continue to stick to ...

At least one of Colorado’s collared wolves moved deeper into the northwest corner of the state in July, a new map released Wednesday by state wildlife officials shows.

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...