Nearly a mile deep, the Pacific Ocean volcano known as Axial Seamount is drawing increasing scrutiny from scientists who only ...

Axial Seamount, an undersea volcano near California, may erupt this year. It poses no tsunami threat, with lava oozing ...

A volcano off the Pacific Coast could erupt by the end of the year, according to scientists. The volcano, known as Axial Seamount, is more than 4,900 feet beneath the Pacific Ocean and 300 miles ...

Jessica Ball with the California Volcano Observatory joined the show to discuss the Mt. St. Helens eruption 45 years ago and ...

A mysterious and highly active undersea volcano off the Pacific Coast could erupt by the end of this year -- nearly a mile deep and about 700 miles northwest of San Francisco, California, the Los ...

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

A NASA-Smithsonian collaboration has revealed that carbon dioxide released from rising magma makes surrounding vegetation ...

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

The volcano is thousands of feet below the ocean’s surface, so it poses no danger to people. But under all that water, a ...

Researchers found that a potential powerful earthquake combined with rising sea levels could lead to a mega tsunami.

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 ...

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