"A study published last week in the journal Science adds more detail to the already widely acknowledged finding that fracking leads to earthquakes. It's not the extraction of oil and gas that causes the tremors; it's the method of disposing the wastewater -- a byproduct of hydraulic fracturing -- that's to blame. The new research published in Science found that just four high-volume disposal wells contributed to roughly 20 percent of the quakes in Oklahoma and the surrounding area. Up to 45 percent of the earthquakes, or roughly 15 quakes of at least magnitude 3.0 per week, are likely attributable to wastewater disposal, the researchers wrote. |