A magnitude-2.5 earthquake shook the Charleston, South Carolina region just after 9:00 p.m. local time on Wednesday, centered ...

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.

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 ...

The U.S. Geological Survey has confirmed that a Ladson-area earthquake shook the area on Saturday night.

Often in these weekly Night Sky columns I refer to the magnitude of a star or planet. The concept of magnitude is relatively easy to grasp. Put simply, magnitude indicates an object’s degree of ...

A magnitude 7.0 earthquake struck off the coast of Tonga early Monday morning, prompting a tsunami warning that has since been lifted. The U.S. Geological Survey said that the earthquake hit about 62 ...