"Two hundred million and counting: That's how many times a documentary about China's massive air pollution problem has been viewed online since the weekend. Environmentalists are hailing it as an eye-opener for Chinese citizens.

The filmmaker, Chai Jing, was an investigative reporter and anchor at state broadcaster China Central Television. She quit her job last year to take care of her daughter, who was successfully treated for a benign tumor.

In the documentary, she describes how difficult it was to explain to her daughter why she shouldn't go outdoors."

Anthony Kuhn reports for NPR's All Things Considered March 4, 2015. [2]