In When Smoke Ran Like Water, the world-renowned epidemiologist Devra Davis confronts the public triumphs and private failures of her lifelong battle against environmental pollution. She documents the shocking toll of a public-health disaster-300,000 deaths a year in the U.S. and Europe from the effects of pollution-and asks why we remain silent. For Davis, the issue is personal: Pollution is what killed many in her family and forced some of...