BEIJING, CHINA - NOVEMBER 15: A Chinese woman wears a mask as haze from smog caused by air pollution hangs over the Forbidden City on November 15, 2015 in Beijing, China. As a result of industry, the use of coal, and automobile emissions, the air quality in China&#039;s capital and other major cities is often many times worse than standards set by the World Health Organization. (Photo by Kevin Frayer/Getty Images)