A powerful 7.5 magnitude earthquake struck off northern Japan late Monday, injuring 23 people and triggering a tsunami in Pacific coast communities, officials said. Authorities warned of possible ...

For more than a month, the Bay Area has been subjected to a seemingly ceaseless stampede of earthquakes, rattling windows and raising fears across California.

The quake came only eight days after three earthquakes shook the area in the course of about 100 minutes. More than 30 quakes ...

Earthquakes and seismic activity often happen with sudden movements underground with tectonic plates. Seismographs are used by scientists to measure the time, location and strength of an earthquake.

A 6.7 magnitude earthquake occurred Friday afternoon local time off the northern coast of Japan, the Japan Meteorological ...

A 4.5 magnitude earthquake struck off the coast of Oregon early Sunday morning, according to the U.S. Geological Survey. The ...

What does “moment magnitude” mean, and how do scientists determine the strength of a rupture in the earth? By Henry Fountain Henry Fountain spent a quarter century covering science for The Times. He ...

A 5.1 magnitude earthquake shook an area near Oklahoma City late Friday, followed by smaller quakes during the next several hours, the U.S. Geological Survey reported. No injuries were reported and ...

At least two people were killed in a 5.3-magnitude earthquake that shook southwestern Haiti early Monday, officials told AFP, with the tremor followed by several aftershocks. In Anse-a-Veau, a small ...

MUSCOY, Calif. (KABC) -- A 4.3-magnitude earthquake struck the Inland Empire Thursday morning, with shaking felt across Southern California. That quake hit just after 9:30 a.m. in the Muscoy area at a ...