As an always-lethal disease spreads on elk feedgrounds, pilot projects are underway to find more low-elevation habitat for ...

Not even park rangers are off limits for angry bull elk.

Wyoming ranchers are being paid to let elk winter on their land, a strategy conservationists hope will reduce the spread of ...

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Wolves culled the elk. Fewer elk means more aspens can grow. More beavers are attracted to the trees. It's called a trophic ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...

We may receive a commission on purchases made from links. Yellowstone National Park covers nearly 3,500 square miles in the ...

In Yellowstone, grizzly bears and wolves live pretty close together, and their territories often overlap. As you can imagine, ...

About 50 Yellowstone National Park visitors got the wildlife viewing opportunity of a lifetime in late January. Perched above Hayden Valley, they watched as the Wapiti Lake wolf pack pursued a ...

When hydrologist Bob Beschta arrived in Yellowstone in 1996, he noticed something odd with the Lamar River. The stream was over-widened, the banks were eroding and precious soil was sloughing off ...

Dave Hallac stood in his office at the Yellowstone Center for Resources, the park body charged with science and resource management, in a rambling old clapboard building amid the formidable stone ...