Why is oil and gas activity causing earthquakes? And can we reduce the risk? If you’ve been following the news lately, chances are you’ve heard about – or even felt – earthquakes in the central United States. During the past five years, there has been an unprecedented increase in earthquakes in the North American mid-continent, a region previously considered one of the most stable on Earth. According to a recent report by the Oklahoma Geological Survey, Oklahoma alone has seen seismicity rates increase 600 times compared to historic levels. The state has gone from experiencing fewer than two magnitude-three earthquakes per year to greater than two per day, the report found. Similarly, my home state of Texas has experienced a near 10-fold increase in magnitude-three earthquakes or greater in the past five years. Read More here