New research offers clues as to why Mount St. Helens is one of the most explosive volcanoes in the Cascade range and why it stands apart from the chain of other Cascade volcanoes. Scientists from the ...

Most webcams used by the USGS Hawaiian Volcano Observatory take a snapshot every few minutes to conserve bandwidth, but three webcams are currently “livestreaming” — meaning they transmit real-time ...

When referred to as a gas, it means a volatile has transitioned into the vapor phase. The most common gases (or vapor phase volatiles) emitted at the surface are water (H2O), carbon dioxide (CO2), and ...

On a single day in November 2025, emergency managers across Washington state were inundated with calls about an eruption at Mount Rainier that was not happening. Viral online posts and sensational ...