"Painter et al. claim that large-carnivore recovery in Yellowstone National Park has produced a strong trophic cascade compared to other systems, citing a 152-fold increase in aspen sapling density ...

Yellowstone's wolves are helping a new generation of young aspen trees to grow tall and join the forest canopy — the first new generation of such trees in Yellowstone's northern range in 80 years.

The famed Mollie’s Pack was just “looking for food” when it left Yellowstone to den on the Shoshone National Forest, a ...

The Mollie’s Pack is Yellowstone's oldest wolf pack and includes the famous Wolf 1090F. The pack has strayed outside the park ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Leslie Patten hiked into a remote reach of northwest Wyoming’s Sunlight Basin in December to post a trail camera where she’d ...

Thirty years after gray wolves were reintroduced to Yellowstone, the verdict is more nuanced than the popular legend. The comeback delivered major ecological and economic gains, but it also came with ...

8-Mile pack pups from two breeding females’ litters excitedly greet adults returning to the den. Pup survival to independence increases significantly with increasing numbers of adult pack members, who ...

This kind of behavior is not encouraged. A man was caught on video approaching and spraying at a Yellowstone wolf pack. Bystanders shouted warnings. Park officials advise staying at least 100 yards ...