A river that drained the slopes of a now-vanished volcano may have carved Yosemite Valley's depths during the last 10 million ...

Over the Sierra crest — about 150 miles to the east of Manteca, Oakdale, and Turlock — is one of the world’s largest active ...

Seismic wave measurements suggest the supervolcano beneath the popular national park is unlikely to erupt any time soon ...

Yellowstone contains more than 10,000 thermal features. The number and location of thermal areas is always changing, begging the question: Where will future thermal areas develop?

Yellowstone contains about 120 thermal areas that collectively are home to more than 10,000 thermal features, like hot ...

When standing in many places in Yellowstone National Park, the signs of a buried heat source are unmistakable, making one ...

Conventional helium production comes with enormous carbon emissions, so scientists are looking for alternatives in places ...

When standing in many places in Yellowstone National Park, the signs of a buried heat source are unmistakable, making one inclined to wonder “how far beneath my feet is there ...