A minor, 3.7-magnitude earthquake struck in Southern California on Thursday. It was followed by a larger, 4.3-magnitude quake ...

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

The Concord Fault, which runs through Bay Area neighborhoods in Concord and Walnut Creek is in a different location than previously understood. It could produce a major earthquake in the Bay Area.

At least two people said on social media that they felt the earthquake, according to the U.S. Geological Survey.

More than 300 earthquakes have erupted at Washington's Mount Rainier this week, the largest earthquake swarm at the volcano ...

More than 300 tremors were recorded below Mount Rainier over the course of three days. Scientists say they were too weak for ...

Mount Rainier was experiencing "the most significant seismic activity" at the volcano in more than 15 years as an "earthquake ...

Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington’s Mount Rainier but say there is no indication that the cluster of quakes is cause ...

Scientists discover enormous pockets of salty brine beneath the Pacific Ocean, key to understanding periodic underwater ...