A strong, 6.3-magnitude earthquake struck in the North Pacific Ocean near Ecuador on Friday, according to the United States ...

An area in the Pacific Northwest lies on a 'subduction' zone where a tectonic plate slides underneath the North American plate. Subduction zones produce the world's largest earthquakes.

In 1638, an earthquake in what is now New Hampshire and Plymouth, Massachusetts, left colonists stumbling from the strong ...

A strong, 6.3-magnitude earthquake struck in the North Pacific Ocean near Ecuador ... U.S.G.S. scientists to update the shake-severity map. Source: United States Geological Survey | Notes: Shaking ...