Volcanoes often give little warning before they erupt, but now scientists have discovered an unexpected early warning sign—trees. This new finding comes from a joint study by researchers from NASA, ...

Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample is near the summit of the active volcano located above 14,000-feet, ...

Imagine waking up one morning to news that a massive volcanic eruption has shaken a remote region with absolutely no advance notice. This isn't science fiction. It's happening right now around the ...

The Philippine Institute of Volcanology and Seismology (Phivolcs) reported brief lava fountaining activity on Monday at Mayon Volcano as its effusive eruption continues for 70 days. In its latest ...

Although volcanic eruptions are spectacular natural events that occur around the world every day, most volcanoes spend the ...

This week the U.S. Geological Survey Cascades Volcano Observatory, in cooperation with the U.S. Forest Service and Mount Hood National Forest, installed three new volcano monitoring stations on the ...

Geochemical analysis of erupted tephra samples over the past decade help scientists understand the temperature of Kilauea’s shallow magma system under the summit — and things have been “heating up!” ...

Toxic gases and ash from Mount Vesuvius took just minutes to asphyxiate an estimated 2,000 Pompeians in C.E. 79. A pyroclastic flow from Mount Pelée claimed the lives of nearly 30,000 on the Caribbean ...

Yellowstone National Park, renowned for its geothermal features and volcanic history, is beginning to show signs of renewed activity after remaining inactive for approximately 160,000 years. Recent ...

Mount Spurr, whose volcanic ash darkened Anchorage’s skies in 1953 and 1992, may be building toward another eruption, according to a statement issued Thursday by the Alaska Volcano Observatory. For ...

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 ...

View of Mount Rainier from Pinnacle Peak trail in Mount Rainier National Park, Washington State, USA. (Photo by Wolfgang Kaehler/LightRocket via Getty Images) USGS Volcanoes, a USGS social media ...