A 4.1-magnitude earthquake was reported in Alaska on Thursday (July 3), according to the United States Geological Survey. The ...

Essentially, gas pistoning is a shallow, degassing-driven rise and fall of a lava surface. Often these pistons occur in ...

A minor, 3.3-magnitude earthquake struck in Northern California on Monday, according to the United States Geological Survey.

A 3.3-magnitude earthquake hit Northern California Monday evening near Los Banos, about 30 miles from San Jose. No damage ...

A preliminary 3.0 magnitude earthquake struck near Dublin Monday night, according to the United States Geological Survey. The ...

A small earthquake struck off the coast of Isla Vista on Thursday morning. It was 2.7 magnitudes, approximately 6 miles off the coast.

An increase in seismicity—marked by frequent tremors—was observed recently at Alaska's Iliamna Volcano, which last erupted in ...

The 3.6-magnitude earthquake happened at 6:30 p.m. and was centered at the San Luis Reservoir near Los Banos. The quake was ...

The Trump administration’s proposed budget bill would cut funding to the U.S. Geological Survey (USGS) by nearly 40%, ...