Recently, a series of earthquakes struck California and El Salvador—adding to a worldwide number of earthquakes in various places. Imperial County, California, experienced many tremors ranging from 2.0 to 5.5 in magnitude. “By 5 p.m., the USGS had recorded about 300 earthquakes, and the count continued to rise throughout the evening” (LA Times, August 26, 2012). Although earthquakes are common in the region, so many at one time is unusual.