Aspen trees are thriving again in Yellowstone for the first time in 80 years, thanks to wolves reintroduced in the 1990s that helped control elk herds.

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

Yellowstone County is reeling from the loss of a longtime local leader. Commissioner John Ostlund was killed Thursday afternoon when a plane he was flying hit a power line, flipped, crashed and ...

The U.S. Fish and Wildlife Service has identified how two of Colorado's reintroduced gray wolves died earlier this year.

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

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

With NPS staff employment down since January, land managers are finding it more difficult to educate parkgoers about the ...

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

When I was younger, I worked as a seasonal park ranger in Yellowstone National Park. I worked in the youth program, where I had the privilege of taking groups of ...

Landowner Paul Lister has long said he wants to release wolves at Alladale. Over two decades after he bough the reserve, where are they? And ...

Discover the fascinating story of the Druids, the largest and most powerful wolf pack ever to roam Yellowstone. Originating from Canadian wolves, the Druids were introduced in the 1990s as part of a ...

A routine temperature check at the Norris Geyser Basin in Yellowstone National Park led geologists to discover a new blue water spring.