News

We recently received a question about how mud volcanoes form and why they're distinct from "real" volcanoes (the kind involving magma), so we're here...

Nearly all of California’s geothermal electric power generation comes from areas where eruptions occurred in the past tens of thousands of years

If you've noticed any changes to the earthquake counts released in CalVO's weekly updates, don't worry - some behind-the-scenes improvements to our...

USGS Volcanic Threat Assessment updates the 2005 rankings.