Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Cinder cones are circular or oval cones made up of small fragments of lava from a single ...

They're born. They live once, erupting for a period that might last for days, years or decades. Then, they go dark and die. This narrative describes the life of a monogenetic volcano, a type of ...

Volcanoes might seem like nature’s incinerators, but using them to burn up trash would be dangerous and disrespectful to ...

When geologists study volcanic hazards or try to anticipate what a volcano may do in the future, one of their primary tools is to examine the volcano’s past behavior.

Nearly 200,000 people live, work or pass through California’s volcanic hazard zones on a daily basis, researchers said Monday in a report broadly assessing what could be at risk from an eruption. The ...

This chapter summarizes the principal conclusions and recommendations developed elsewhere in this report. Major conclusions are printed in italics and recommendations in bold. Basic research in the ...

Nearly 200,000 people live, work or pass through one of California's volcanic hazard zones on a daily basis, and there's a 16 percent chance of an eruption in the state within the next 30 years.

An increase in seismic activity has been observed in Bulusan Volcano, the Philippine Institute of Volcanology and Seismology (Phivolcs) said Monday. In an advisory, the Phivolcs said there were 49 ...

The U.S. Geological Survey (USGS) has warned that California's next big hazard could come in the form of a volcanic eruption—not a massive earthquake, landslide or wildfire, which the state is often ...