Map: Our planet shakes a lot

With props to GeekOSystem and our director, Rob Katko, a U.S. Geological Survey map of earthquakes in the United States over the past week.

Aug. 23, 2011, 7:26 PM UTC

With props to GeekOSystem and our director, Rob Katko, a U.S. Geological Survey map of earthquakes in the United States over the past week. Blue is for anything in the last day, yellow for anything within seven days.