A record-breaking deep earthquake registered in May 2015 offshore of Japan likely was not a tectonic event but triggered by a ...

An earthquake struck off the northern California coast on Tuesday ... long-term seismic risks posed by the Cascadia Subduction Zone, a less-publicized but potentially catastrophic fault system ...

January 26 marked the 325th anniversary since the last earthquake struck the Cascadia subduction zone. Centuries later, the ...

Within a decade, more than 5,000 residents lived in Malibu. Architects warned of the danger of building in the area, known to ...

While no injuries or damage was reported, the seismic activity followed a deadly stretch of wildfires in Southern California that began on January 7. Killing at least 25 people, the series of 30 ...

California is overdue for a major earthquake, experts say. So why are state regulators allowing oil companies to drill injection wells dangerously close to earthquake faults? Scientists say injections ...