New York Times: One could argue that, except for the Internet, the most important technological advance of the last two decades has been hydraulic fracturing, widely known as fracking. Practically overnight, it seems, this drilling technique has produced so much oil and gas beneath American soil that we are at the brink of something once thought unattainable: true energy independence. And its repercussions, for geopolitics, the environment and other areas, are only now being grasped. In The Frackers, Gregory...