Mount Rainier in Washington state has been rocked by more than 300 earthquakes the largest seismic swarm in nearly two decades. While officials insist there's no need for panic, experts are watching ...

The BriefMount Rainier's recent seismic swarm has surpassed 2009 records, with 391 events since July 8.Scientists report ...

A string of earthquakes has made some wonder if this enormous West Coast volcano is about to erupt, but here's what seismologists have to say.