(Jiojio/Moment/Getty Images) For more than three decades, experts have been trying to solve the mystery of why a certain kind ...

Add Yahoo as a preferred source to see more of our stories on Google. Tracy Turner, owner of the Wynola Junction, looks over pictures that fell from shelves when an earthquake hit Monday in Julian.

A hidden network of earthquake faults running beneath Seattle may be far more active than scientists realized. New research ...

A new study suggests northern Oregon could experience stronger shaking during a major Cascadia earthquake than earlier models ...

A fault line deep under the eastern Pacific has been doing something earthquakes rarely do: repeating itself. About 1,000 ...

Unlike the San Andreas Fault — one of the most heavily studied faults in the world — scientists know comparatively little ...

Deep beneath the eastern Pacific Ocean about 1,000 miles off the coast of Ecuador, a fault line on the seafloor has been ...

Scientists have finally explained why a Pacific Ocean fault has been generating repeating “clockwork” earthquakes for decades ...

They can have their quake and beat it too. Researchers have identified the mechanism behind hidden underwater “brake zones” ...

Tracy Turner, owner of the Wynola Junction, looks over pictures that fell from shelves when an earthquake hit Monday in Julian. (Denis Poroy / Associated Press) Below California's famed beaches, ...