Carbon dioxide emissions from rising magma is one of the earliest signs that a volcano is waking up, but measuring it ...

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

Scientists believe that the Axial Seamount, an underwater volcano located 300 miles off the coast of Oregon, is showing signs ...

The Axial Seamount, located 300 miles off Oregon's coast, shows signs of eruption. Experts assure it won't affect land or ...

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

Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active ...

Using radar data from a NASA mission launched more than three decades ago, scientists have found fresh clues suggesting that ...

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

On May 18, 1980, the United States experienced the deadliest and most destructive volcanic eruption in its history.

Volcano type: Stratovolcano Most recent eruption: 1980, 2004-2008 The map below shows all where volcanoes are warming/minor activity (yellow) and erupting red as of May 14. The circles show where ...