Aspen trees are thriving again in Yellowstone for the first time in 80 years, thanks to wolves reintroduced in the 1990s that helped control elk herds.

Aspen forest is reclaiming the skyline of Yellowstone National Park after decades of controversy over efforts to return ...

If you're visiting for wildlife, Yellowstone National Park is the ideal destination. There are 67 different mammals in the park, including over 1,030 grizzly bears in the Greater Yellowstone Ecosystem ...

The apex predators, restored to the park in 1995, appear to be keeping the local population of plant-eating elk in check, ...

Thirty years after wolves returned from near extinction in the Rocky Mountains, the state of Idaho is back in the ...

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