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 ...

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

The dominant rock type in the Yellowstone region is rhyolite, and that is very rich in silica. As hot water circulates underground, it can dissolve that silica and bring it to the surface, where it is ...

Learn about the new hydrothermal feature that appeared last winter in Yellowstone National Park, possibly on Christmas Day.

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

Last April, geologists conducting routine maintenance at temperature logging stations in Yellowstone National Park’s Norris ...

A routine temperature check at the Norris Geyser Basin in Yellowstone National Park led geologists to discover a new blue ...

Yellowstone National Park is home to a huge and varied range of animal life but in recent days, many creatures appear to be ...

Yellowstone National Park announced Monday the discovery of a new 13-foot baby blue hot spring. It emerged with little ...

A 13-foot-wide hot pool formed over the winter in one of Yellowstone’s most active areas, and it could offer new insights into the park's ever-changing geothermal systems.

The incident occurred at Grand Prismatic Spring near Old Faithful as tourists were enjoying a close-up view of the famous and popular hot spring.

The bison died in the boiling waters of the Grand Prismatic Spring. This happens from time to time, but usually not in front of a crowd.