A bison attacked a tourist earlier this week in Yellowstone National Park after the man got too close. The incident occurred ...

Geoscientists discovered a magma cap acting as a "lid" 2.4 miles beneath Yellowstone. This magma cap traps heat and pressure, ...

A tourist received jail time after she ventured off the boardwalk and about 10 feet onto the cone of the Old Faithful geyser at Yellowstone National Park, federal officials said. Photo by Judy ...