Yellowstone officials said northern portions of the national park might remain closed for "a substantial length of time" due to severe flooding washing out bridges and roads. "Many sections of road in ...

A bison gored a man Tuesday after a large group of visitors got too close to the animal in Yellowstone National Park, officials said.Related video above: Caught on Camera: Bison herd rushes car at ...

A Yellowstone National Park visitor threw caution to the wind, closely approaching a pack of wolves in the wild. Was it a ...

The man wanders off the marked trail, and away from the group, towards a bear in the Hayden Valley area of Yellowstone ...