Was that an earthquake you just felt or merely a big truck rumbling by? You don't have to wonder thanks to the U.S.

Wednesday’s magnitude 7.3 earthquake off Alaska's Aleutian Islands chain struck in a region that has experienced a handful of ...

A strong earthquake of magnitude 6.3 was recorded off the East Coast of Kamchatka, the National Center for Seismology (NCS), ...

A worldwide Android smartphone-based earthquake detection and early warning system can detect seismic activity in real time.

An earthquake of magnitude 6.2 struck Alaska on Monday, according to the National Center for Seismology (NCS). The earthquake ...

Hawai’i was briefly under the threat of a possible tsunami — based on available data being investigated by forecasters in ...

By Gary Clothier Question: I was told an earthquake in Madrid was the strongest ever felt in North America. How is that possible? N.H., Bar Harbor, Maine Answer: I bet are you thinking of Madrid ...

The 6.5 magnitude earthquake in Stanley, Idaho, was the biggest earthquake in almost 40 years. New data shows a newly discovered fault line caused it.