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The stars on the map above show the location of earthquakes believed to have been triggered by oil and gas wastewater injection or other human activity since 2008. The white, green, yellow and red shading shows the expected earthquake hazard based on past natural earthquake activity. Click to enlarge. Map courtesy of USGS.

About This Report

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.

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