A team of scientists put together a global database of submarine mud volcanoes. Orders of magnitude more are still bubbling, ...

The eruption of Italy’s Mount Etna reminded the world how sudden and unpredictable volcanoes can be. Check out the most ...

A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say.

California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the ...

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

Jupiter's volcanically active moon Io may possess a global ocean of magma underneath its surface, as well as mysteriously warm poles, a new study finds.

HAWAII VOLCANOES NATIONAL PARK, Hawaii (AP) — Lava began bubbling Monday through the crust of one of the world's most active volcanoes — Kilauea, on Hawaii's Big Island.

This map shows how several holiday destinations popular with British tourists are home to the most active volcanoes in the world.

The result was Hawaii’s Kilauea on top, followed by several Northwest mountains, with Hawaiian, Alaskan and one southern California volcano mixed in.

LOS ANGELES — A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year, scientists say. Nearly a mile deep and about 700 miles northwest of San ...