3 million people in US at risk man-made earthquakes this year A study by the US Geological Survey reveals that three million Americans, primarily in Oklahoma and Kansas, are at risk from human-induced earthquakes in 2017. http://ift.tt/2m9B3Vv 3 million people in US at risk man-made earthquakes this year via Instapaper http://ift.tt/2m9B3Vv
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