An earthquake registering an intensity of upper 5 on Japan's seismic scale of zero to 7 has hit the Aso region of Kumamoto Prefecture, in the southwestern part of the country.

The temblor measured up to an upper 5, the fourth-highest level on Japan's 10-point seismic intensity scale, and occurred at ...

Some reports of shaking came in from as far away as 40 miles from the epicenter, according to the federal agency that tracks ...

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 ...

Scientists measure both the energy released in an earthquake and its damage. In 1902, Italian scientist Giuseppe Mercalli introduced a scale that measures the intensity of an earthquake based on its ...

A minor, 3.9-magnitude earthquake struck north of San Francisco on Monday, according to the United States Geological Survey.