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

Ecosystems change when keystone species restore balance. Philanthropy can learn from nature by funding the actors, infrastructure and relationships that allow complex systems to regenerate.

Tribally run management and a deal with Yellowstone National Park are helping forge a future for coexisting with the iconic ...

For decades, reintroducing grizzlies to California seemed completely unrealistic. Now, the California Legislature is considering a plan that could ...

Mountain lions are chased by hounds to push them above a tree, after which a ketamine dart is injected into them.

Where Washington, Idaho and Oregon meet, elk are straying from public to private lands, causing conflict and concern. If the Trump administration opens national forests further, it could get worse.

Pennsylvania's wildlife faced decline after European settlement, but conservation efforts have brought many species back.

Discover 25 Times Nature Hit the Undo Button, from species de-evolving to abandoned cities reclaimed by wilderness. Explore Earth's incredible reset power ...

Tribally run management and a deal with Yellowstone National Park, is helping forge a future for coexisting with the iconic American Bison.

Tribally run management and a deal with Yellowstone National Park, is helping forge a future for coexisting with the iconic American Bison.

Cody Roberts, the Sublette County man accused of torturing a wolf in the Green River Bar, pleaded guilty Thursday to felony animal cruelty. He also apologized for his actions. "I regret my actions and ...

The planning process for two wildlife crossings will begin in the California desert thanks to a $5.5 million state-funded ...