The volcano last erupted in 2015, producing 450-foot-thick lava flows, but because of its remote location, it is not a threat ...

A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

Volcanoes in the United States that have been active since spring woke up, brushed themselves off, and then went back to ...

Seismicity has decreased” from 30 events per hour at the peak to a few per hour as of Saturday morning, the U.S. Geological ...

Earth’s continents may look fixed on a globe, but they’ve been drifting, splitting and reforming over billions of years – and ...

This is now the largest recorded earthquake swarm at Mount Rainier since seismic monitoring at the volcano began in 1982, the ...

The quakes began just before 1:30 a.m. on Tuesday, according to the Geological Survey at the Cascade Volcano Observatory.

The United States and Japan concluded a weeklong disaster-response exercise that simulated a magnitude 7 earthquake, the ...

The series of earthquakes is the first major swarm of seismic events since 2009. Is it safe if you’re planning on visiting?

Mount Rainier, the active volcano towering above southwestern Washington state, started rumbling — very lightly — on Tuesday.

Lava in Hawaii, seismic shaking in Alaska and underwater rumblings near Oregon. Scientists say it’s not the end of the world, but it’s definitely worth watching.

A 6.2 magnitude earthquake struck off Panama's Pacific coast on Monday, approximately 130 miles south of Punta Burica. The ...