From the Smithsonian Channel

The Surprising Culprit Threatening Yellowstones Grizzly Bears

Name: The Surprising Culprit Threatening Yellowstones Grizzly Bears
Uploaded: 2018-09-12
Duration: 197742
Description: Yellowstone National Park is one of the world's most protected ecosystems. But that's still not enough to keep its grizzly bears completely safe.

Yellowstone National Park is one of the world's most protected ecosystems. But that's still not enough to keep its grizzly bears completely safe.

Smithsonian magazine | 3:17