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

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

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

Sitting in an old-growth spruce fir forest, Doug Smith says he can see first-hand the impact of reintroducing wolves on the larger ecosystem of Yellowstone National Park. Long before Yellowstone ...

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

YELLOWSTONE NATIONAL PARK, WYO. – Sitting in an old-growth spruce fir forest, Doug Smith says he can see first-hand the impact of reintroducing wolves on the larger ecosystem of Yellowstone ...

Researchers have documented the first new generation of overstory aspen trees in Yellowstone’s northern range in 80 years, ...

The helicopter was flying low above a remote snow-covered mountain ridge outside Hinton, Alberta, Canada, when pilot Clay ...

Yellowstone provides summer habitat for as many as 20,000 elk. The park is also home to more than 100 wolves, which prey on elk, deer, bison, and smaller mammals.