The story of gray wolf recovery in Yellowstone is hailed as one of the world's greatest conservation success stories, but many fear that the population is once again threatened.

A century ago, resident wolves were eliminated from the park. In 1995, biologists brought them back, marking a historic ...

Add Yahoo as a preferred source to see more of our stories on Google. Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow ...

A famous wolf and her pack left Yellowstone, leaving them vulnerable to hunting.

Five years after wolves hit the ground in Yellowstone National Park, officials there are still trying to find enough money to fund a study meant to determine how many newborn elk calves the big ...

If not for a series of tones broadcasting her location, no one would’ve known she had died. Like dozens of other Yellowstone National Park wolves involved in a three-decade-long study, researchers ...

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, ...

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