A fiery mystery has puzzled geologists for decades: where did the lava fueling one of Earth’s largest volcanic events come from? A new study may finally have the answer. Scientists have long believed ...

Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts mountains ...

Scientists long wondered whether there were places on Earth where extremely hot material from the core of the Earth moves up through the mantle, and if these plumes were responsible for some volcanic ...

An underwater volcano in the Pacific Northwest is expected to erupt sometime this year for the first time in 11 years — and it could stir up lots of activity for marine life in the area. The volcano, ...

Forty volcanoes are currently erupting worldwide, with activity concentrated along the Pacific Ring of Fire and other tectonic hotspots. Interactive maps highlight both iconic peaks and lesser-known ...

A series of relatively young underwater volcanoes has been discovered under the waves of the Pacific Ocean, some of which may even be active. The volcanoes were found during an expedition to map the ...

While the USGS scientists learned plenty about volcanism in El Salvador during this trip, it also provided key insights to bring home to our own volcanoes. Explosive eruptions in Hawaii are relatively ...