Oklahoma lawmakers didn't discuss earthquakes in their legislative session this year, despite the hundreds of small to midsized quakes that have rocked the state.
The University of Oklahoma is closing an earthquake monitoring facility amid unprecedented swarms of earthquakes in the state that have been linked to oil and gas activity.
The earthquakes displayed were located in Oklahoma and occurred from Jan. 2, 2008, until Jan. 15, 2015, based on Oklahoma Geological Survey information. The earthquakes are a minimum 2.0 magnitude. Click map to link to animation. Map courtesy of USGS.
A surge in seismic activity is occurring around the U.S., and many top scientists are pointing at injection of waste from drilling and hydraulic fracturing as a possible culprit.