About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are strong enough ...

A strong, 6.4-magnitude earthquake struck in the Philippine Sea on Wednesday, according to the United States Geological ...

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.

Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely ...

A moderately strong, 5.7-magnitude earthquake struck in Japan on Tuesday, according to the United States Geological Survey.

A 5.5 magnitude earthquake struck waters outside of Northern California on Sunday, according to the United States Geological Survey (USGS). USGS said the earthquake was reported at around 11:45 a.m.

(NEXSTAR) — While areas like California and the West Coast may be top of mind when you think of where earthquakes occur in the U.S., a new report shows nearly 75% of the country could experience a ...