earthquakes

Devastating Cascadia megaquakes may rock the Pacific Northwest more frequently than previously suspected.

How do scientists know when an earthquake is expected to hit an area?

Can cats, dogs or other animals predict earthquakes?

And oil and gas extraction are to blame.

A swarm of 200 earthquakes hit Yellowstone National Park, but seismologists still aren't sure what that means.

California has a 93 percent chance of a magnitude-7 or greater earthquake occurring by 2045. Early warning systems, now in development, could limit casualties and damage.

A 7.9-magnitude earthquake struck off Kodiak, Alaska, this morning. A tsunami warning is in effect for parts of Alaska and British Columbia, Canada.

A magnitude-4.4 earthquake just hit Delaware Bay, Delaware, surprising people in The First State, a place typically unaccustomed to tremblers.

The slowdown in Earth's rotation could trigger more earthquakes next year, new research suggests.