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

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, aspen trees are thriving in Yellowstone National Park in the US, due mostly to the ...

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

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

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

The National Park Service is clearing up any misconceptions on whether wildlife is migrating away from Yellowstone National ...

In 1995, a bold decision was made that would forever change the course of Yellowstone National Park's ecosystem and economy.

Wolves in Yellowstone National Park will sometimes test their predation skills on lone adult bison. But there can be painful ...

After a drought of new aspen growth in Yellowstone's northern range, wolves appear to have flipped the script for these ...

On the flip side, wolves have been known to hunt down bison, and often need a pack to take down just one of the big beasts. As you might imagine, bison are rather tough creatures and can be quite the ...