Manmade earthquakes

I’ve been writing a lot recently about induced seismicity, a.k.a. triggered earthquakes. There’s been an extraordinary rise in the numbers of earthquakes in the central U.S., to the point that there are now more magnitude-3+ earthquakes in Oklahoma every year than there are in California. The culprit? Oil and gas operators who pull up huge amounts of underground water in their wells, then re-inject it into the ground. These “saltwater disposal wells” have been linked to quakes in Oklahoma, Texas, Arkansa, and elsewhere. I traveled to Oklahoma this spring to talk to seismologists and geologists who are trying to explain the quakes, and residents who don’t care so much about the science and just want their houses to stop shaking, now. Here’s my Nature story from that reporting trip, and another shorter one that explains some of the most recent science underpinning saltwater disposal and induced earthquakes. [Update, summer 2016: I’m pleased to report this story won the 2016 David Perlman news-writing award from the American Geophysical Union.]