A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

The volcanic system beneath Yellowstone National Park is one of the few places on Earth capable of an eruption so large it ...

At Puʻuʻōʻō, fissures reopened on either side of the vent, while at Maunaulu, the eruption stalled and the vent collapsed ...

Experts have dismissed the possibility of an eruption, saying, 'It’s Yellowstone being Yellowstone.' ...

Learn more about the past eruptions at Yellowstone National Park and how each new eruption displaced evidence of the past.

Located in the United States, one of the world’s largest volcanoes is gearing up to explode. It’s known as the Yellowstone ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

What do small earthquakes beneath Kilauea summit mean for the ongoing eruption? – Features, Volcano Update | West Hawaii ...