Tree rings reveal a new kind of earthquake threat to the Pacific Northwest. These findings could have implications for seismic preparedness measures in the region. In February, a 7.8-magnitude ...

For more than a month, the San Francisco Bay Area has been subjected to a seemingly ceaseless stampede of earthquakes — the latest in a series of seismic swarms that have rattled windows and raised ...

Washington State’s Puget Sound—home to the metropolises of Seattle, Tacoma and Olympia—is a sitting duck for a major earthquake, whether it comes in the form of a deep tremor triggered by a ...

In February, a 7.8-magnitude earthquake shook the Turkey-Syria border, followed by one nearly as large nine hours later. Shallow faults less than 18 miles beneath the surface buckled and ruptured, ...