It is a busy time right now in Yellowstone National Park with the grizzly bears waking up from hibernation as Spring weather ...

Aspen forest is reclaiming the skyline of Yellowstone National Park after decades of controversy over efforts to return wolves to the ecosystem. The successful growth of a new Aspen overstory for the ...

View post: Victor Glover's First Words After Returning From the Moon Will Tug At Your Heart A man was caught on video approaching and spraying at a Yellowstone wolf pack. Bystanders shouted warnings.

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

If not for a series of tones broadcasting her location, no one would’ve known she had died. Like dozens of other Yellowstone National Park wolves involved in a three-decade-long study, researchers ...

With more than half of the translocated wolves now dead, Colorado's wolf reintroduction program is unraveling.

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

The award-winning documentary “Lost Wolves of Yellowstone,” in IMAX, is now showing on San Diego’s largest IMAX screen, in ...

Touching wild animals, especially in National Parks, is both dangerous and illegal. Even so, many people make headlines every year for getting far too close to potentially threatening animals.

Editor's note: This story is the first in a series about wolf reintroduction in Colorado. GRAND COUNTY, Colo. — Snow swirled in the air as the small crowd of spectators congregated on a patch of state ...