BEIJING — Nearly one year after the Chinese government officially declared a “war against pollution,” a documentary about China’s smog titled “Under the Dome” hit the country like a whirlwind. Released on Feb. 28, a few days ahead of the annual session of the National People’s Congress, China’s top legislature, the 104-minute video was viewed over 71 million times in the first 24 hours and discussions and debates on the film and its producer Chai Jing, a former TV presenter, have been continuing on various social media. Read more.