Rumors abound as animals are leaving Yellowstone National Park en masse. Is the Yellowstone supervolcano about to erupt? Details here.

In April, when Yellowstone National Park geologists made their first visit this year to the Norris Geyser Basin, they ...

Yellowstone, a popular tourist destination and namesake of an equally popular TV show, was the first-ever national park in the United States. And bubbling beneath it—to this day—is one of Earth's most ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

The blue water spring is about 13 feet in diameter and 1 foot below the rim, USGS said. The water in the pool was measured at ...

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

Yellowstone's underground plumbing is becoming more ... chamber identified several years ago — about three to nine miles deep and 2,500-cubic miles big — sits below the Yellowstone caldera.