Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help planners anticipate future mudflows.

Klyuchevskoy volcano in eastern Russia began erupting shortly after a powerful 8.8 magnitude earthquake and several aftershocks shook the same area. "A descent of hot lava is observed on the western ...

This photo shows the exposure of the Mount Jackson Rhyolite Series vitrophyre at Gibbon River. Boulders of weathered, lichen-covered rock show how easy it is to overlook these new units. (Photo by Liv ...

Tephrochronology is a specialised stratigraphic method that utilises volcanic ash (tephra) layers to synchronise, date and correlate geological, palaeoenvironmental and archaeological sequences. By ...

Forecasting volcanic eruptions in time to alert authorities and populations remains a major global challenge. In a study ...

But some refused to evacuate during the hazardous lava fountaining episode.

It looks like just another hill in Sussex County, but you wouldn’t have wanted to have been standing there 420 million years ago. That’s about when the Beemerville Volcano erupted in Wantage, give or ...

Indonesia's Mount Lewotobi Laki Laki erupted on Monday, July 7, spewing an 11-mile ash cloud that billowed up into the sky. Australian officials issued a red aviation warning over the risk to flights ...

Mount Lewotobi Laki Laki volcano in Indonesia erupted on Tuesday afternoon. South-central Indonesia is under high alert after a volcanic eruption Tuesday afternoon. The Mount Lewotobi Laki Laki ...

Our Earth is around 4.5 billion years old. Way back in its earliest years, vast oceans dominated. There were frequent volcanic eruptions and, because there was no free oxygen in the atmosphere, there ...

An earlier version of this story was published in 2024. It looks like just another hill in Sussex County, but you wouldn’t have wanted to have been standing there 420 million years ago. That’s about ...