The 1980 Mount St. Helens eruption began with a steady series of earthquakes in March. By April it began spewing smoke, ...

During many of these eruptions, Hawaiian Volcano Observatory field crews documented “ooze outs” — where lava squeezes out ...

A slow-moving geological change in East Africa could reshape the continent and the world. Tectonic forces are gradually ...

Mars today no longer has active volcanoes. But that might change because of a mysterious structure lurking under the surface ...

The 45th anniversary of the catastrophic eruption of Mount St. Helens is on May 18. Here's what to know and when the volcano ...

The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat ...

A reappraisal of decades-old data suggests that strange circular formations on Venus could be volcanic “rings of fire” ...

Earth's geological resurrections, like dead lakes reviving and forests regrowing after wildfires, highlight the planet's ...

Deep beneath the waves of the Pacific Ocean, nearly a mile underwater, one of the most fascinating volcanoes in the world is ...

Eruptive activity at Kīlauea’s summit began again Dec. 23, 2024, with the first in what has become 20 discrete lava ...

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