The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only ...

Far beneath the vast expanse of the Pacific Ocean, at depths ranging from 900 to 1200 kilometers, researchers have uncovered ...

The distribution of tephra is controlled ... Kīlauea and Mauna Loa updates, volcano photos, maps, recent earthquake information and more. Email questions to askHVO@usgs.gov.

A moderately strong, 5.8-magnitude earthquake struck in Turkey on Tuesday, according to the United States Geological Survey.

And while the advisory assured that the “likelihood of an eruption continues to gradually decline,” the 11,000-foot-tall volcano remains at an “elevated state of unrest,” meaning that an “explosive ...

It’s not just earthquakes and tsunamis; experts who sound the alarm for volcano eruptions say the cuts will be felt most when there’s a crisis. The scientists who watch the sun for invisible ...

(CNN) — Sometime between today and 200 years from now, scientists say “the big one” will hit the United States. There is danger lurking on the sea floor off the Pacific Northwest’s coast ...