The power of such eruptions is measured using the Volcanic Explosivity Index (VEI), which is a scale that goes from one to ...

On May 17, 1980, Mount St. Helens erupted in a catastrophic event that is etched in the annals of U.S. geological history. This eruption was not only the largest at Mount St. Helens in thousands of ...

Ash from the catastrophic 1980 eruption of Mount St. Helens began to swirl around the volcano this week, creating a smoky ...

For a moment, it seemed like a blast from the past: a plume over Mount St. Helens on Tuesday looked like the volcano might be ...

Buried deep in Greenland's ice sheet lies a puzzling chemical signature that has sparked intense scientific debate.

Imagine a volcanic eruption so large it spewed 24 cubic miles of ash, rock, and gases into the air, produced smoke that could be seen from 300 miles away, and completely altered the planet's climate ...

It's been more than three and a half years since one of the most powerful volcanic eruptions in recent history left ...

Tourists travelling to Tenerife have been issued a warning ahead of the island’s largest ever volcanic drill, after tremors were recorded last week. It comes after small earthquakes from Mount Teide, ...

Hawaii’s Kilauea volcano has been repeatedly disgorging lava at its summit crater about once a week since late last year. The firehose of molten rock delights residents, visitors and online ...