Maverick environmental writers William J. Kelly and Chip Jacobs follow up their acclaimed Smogtown with a provocative examination of China's ecological calamity already imperling a warming planet. Toxic smog most people figured was obsolete needlessly kills as many there as the 9/11 attacks every day, while sometimes Grand Canyon-sized drifts of industrial particles aloft on the winds rain down ozone and waterway-poisoning mercury in America. In vivid,...