Upon George Mitchell's death in 2013, The Economist proclaimed, "Few businesspeople have done as much to change the world as George Mitchell," a billionaire Texas oilman who defied the stereotypical swagger so identified with that industry. In George P. Mitchell: Fracking, Sustainability, and an Unorthodox Quest to Save the Planet, award-winning author Loren C. Steffy offers the first definitive biography of Mitchell, placing his life...