More geological changes are occurring at Yellowstone National Park, as another hole forms in one of the park's basins.

Lava in Hawaii, seismic shaking in Alaska and underwater rumblings near Oregon. Scientists say it’s not the end of the world, but it’s definitely worth watching.

Yellowstone National Park geologists identified a new thermal feature in Norris Geyser Basin. It may have coincided with a ...

Get ready for a little Christmas in July: There’s a new baby blue pool in Yellowstone National Park, and science suggests it started forming on the winter holiday.

The giant supervolcano that lies under Yellowstone National Park is cooling off in the west but staying hot in the northeast.

A surprise eruption in Yellowstone National Park shot steam, water and dark-colored rock and dirt an estimated 100 feet into the sky and sent people running for safety.

A surprise eruption in Yellowstone National Park shot steam, water and dark-colored rock and dirt an estimated 100 feet into the sky and sent people running for safety.