Atlantic: On Saturday, Chai Jing, a former television journalist from China, released a feature-length documentary film that, unusually for China, took the government to task. Titled Under the Dome, the video featured Chai giving a presentation on stage, using both photographs and slides to examine how China's notorious air pollution got so extreme--and why the Communist Party has failed to fix it. Jing's interest was personal: Her daughter underwent surgery soon after her birth to remove a tumor that, Chai...