The term 'lahar' refers to a deluge of water, volcanic material and other debris which has been swept along.

In the summer of 1831, strange things began to happen in the skies over Europe and North America. The sun shimmered blue and ...

The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only ...

Mount Etna, the highest active volcano in Europe, erupted on Monday morning, causing a chaotic scene at the popular Italian ...

The location within Pollino National Park makes Aieta an ideal base for exploring its ancient forests, deep gorges carved by ...

The largest volcanoes in Earth’s history owe their formation to powerful geological phenomena called mantle plumes—upwellings of abnormally hot rock within the Earth’s mantle that rise toward the ...

Historical accounts and studies of ancient volcanic rocks show that times of volcanic repose transition into loud seismic and eruptive awakenings in a cycle that’s transpired several times in ...

The explosion was the strongest since 2021, expelling ash, dust, lava and a pyroclastic flow, but no injuries or deaths were ...

This Cold War outpost concealed more than submarines—it hosted a devastating eruption that cooled the planet nearly 200 years ...

There are currently no active volcanoes in New England, but they did once exist in the region and they created some of the landforms you can see today. The Ossipee Mountains are an example of a “ring ...

Over the past two decades, it has evolved into China's most comprehensively equipped volcanic monitoring facility. The ...

Kirt Kempter likes to tease conservation groups about their efforts to try to stop erosion in the Galisteo Basin. As a geologist, he contextualizes time a bit differently than other people. He knows ...