Biologists first documented the end of a half-century-long era of grizzly range expansion in the Yellowstone area two years ...

Nearly a dozen Western lawmakers sent a scathing letter Tuesday to the U.S. Fish and Wildlife Service’s acting director Paul Souza, urging the agency to revisit the agency’s January decision to keep ...

This story originally appeared on Vox and is part of the Climate Desk collaboration. In the early 1900s, long before smartphones and selfie sticks, tourists flocked to Yellowstone National Park—not ...