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

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 ...