YELLOWSTONE NATIONAL PARK, Wyoming – Yellowstone's wolves are back, helping revive parts of the ecosystem that changed drastically when this top-of-the-food-chain predator was killed off nearly ...

The serene, snowy valley of the Lamar River in Yellowstone National Park would be a cafeteria for wolves at this time of year. Thousands of elk, deer and bison, driven from higher elevations by win… ...

It’s one such example of the interdependence of animals shown in Epic Yellowstone. Smithsonian Network The series’ other episodes also follow individual animal characters to illustrate the ...

The reintroduction of wolves to Yellowstone National Park in the 1990s had a cascading effect that benefited the entire ecosystem, a new study finds. The finding shows how the return or loss of ...

When the gray wolf was eradicated from Yellowstone National Park in the 1920s, more was lost than just the noble and fascinating predator. The park’s entire ecosystem changed.

The Greater Yellowstone Ecosystem surrounding Yellowstone National Park has the second-largest concentration of grizzlies in the Lower 48 states. Its estimated 1,000 grizzlies pack themselves ...

Yellowstone’s dramatic transformation through the reintroduction of wolves has become a global parable for how to correct out-of-balance ecosystems. In recent years, however, new research has ...

Reintroduction of the gray wolf to Yellowstone National Park has boosted an important food source for the threatened grizzly bear, researchers have found in an example of how the return of a top ...

Large fires in Yellowstone National Park could dramatically increase by mid-century due to climate change, which could create a very different park than the one people know today, a new study ...