A recent study reveals that the Poás volcano has changed its eruption pattern, redefining the global ash-related risk map.

It was small by volcanic standards, but massive by human ones: on this day in 1980, Mount St. Helens erupted in what the ...

Volcanoes are among the most powerful forces of nature. Throughout history, some eruptions have shaken the Earth, changed the weather, and even affected human life for years. Scientists use the ...

A discovery of lunar glass beads continues to captivate scientists, shedding new light on the Moon’s volcanic history. These tiny specks, no larger than a millimeter, were formed during volcanic ...

The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range. From southern British Columbia ...

A team of geologists led by the University of Maryland and the University of Hawaiʻi finally connected one of the largest volcanic eruptions in Earth’s history with its source deep beneath the Pacific ...

How did young volcanoes on Mars form? This is what a recent study published in the journal Geology hopes to address as a team of scientists investigated the complex geological processes responsible ...

Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...