California is riddled with a number of fault lines that frequently cause earthquakes, including Arrowhead, Waterman Canyon, ...
A series of small earthquakes shook the San Francisco Bay Area on Thursday, according to the United States Geological Survey.
A magnitude 3.9 earthquake that struck Monday morning off the coast of Maine was felt in at least nine states, according to United States Geological Survey (USGS) reports. Thousands of reports poured ...