Fracking Makes Earthquakes?

Greenbrier, Arkansas is home to one of the world’s largest natural gas fields. It also felt a swarm of earthquakes recently. Geologists and state regulators noticed that when they capped some of the deep injection wells, the earthquakes nearly stopped. Living on Earth’s Ike Sriskandarajah reports on the future of those wells and a class-action suit that puts drilling-induced earthquakes on trial.