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

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

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

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

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

For the first time in 80 years, aspen trees are thriving in Yellowstone National Park in the US, due mostly to the ...

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

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

Thirty years after wolves were brought back from near extinction in the U.S. Rocky Mountains, the state of Idaho is back in ...

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

Yellowstone is home to hundreds of species of birds, fish and mammals, according to the NPS. It is the only national park in North America where there are no fences to contain the wildlife, and ...