Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... How the wolf changed Yellowstone 30 years after ...

Learn more about why the story of how wolves saved Yellowstone National Park’s aspens is more complicated — and more ...

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Ecosystems change when keystone species restore balance. Philanthropy can learn from nature by funding the actors, ...

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A new study shows that interactions between wolves and cougars in Yellowstone National Park are driven by wolves stealing prey killed by cougars and that shifts in cougar diets to smaller prey help ...

The official count came to 84 wolves in eight packs. That’s down from 108 wolves in nine packs at the end of 2024.

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, ...