After 40 Years of Quiet, Scientists Warn Activity at Major Volcano Could Pose Regional Risk ...

Many Hawaiʻi Island communities downwind from the eruptive vents in the southwest portion of Halemaʻumaʻu Crater inside the summit caldera of Kīlauea have been affected by tephra fall since the ...

Visual observations have been a backbone of volcano research more than 2,000 years and remain fundamental to understanding ...

Add Yahoo as a preferred source to see more of our stories on Google. A recent earthquake swarm at Mount Rainier in Washington state, along with increased volcanic activity in Alaska, Oregon, and ...

Add Yahoo as a preferred source to see more of our stories on Google. Don't panic: Mount St. Helens is not erupting. Officials confirmed on Sept. 16 that Mount St. Helens does have ash surrounding it ...

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 ...

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...

When scientists recently took a closer look at archival images of the surface of Venus, they discovered something new: evidence of volcanic activity on Earth's "twin." The NASA Magellan spacecraft ...

Some observers around the world are connecting Russia’s volcanic eruption to the 8.8 magnitude earthquake on that country's far-eastern shore. The Pacific Northwest Seismic Network at the University ...

What may look like a single volcanic eruption is usually the visible outcome of far more complicated activity taking place underground. Beneath the surface, magma can migrate, cool, mix, and ...