Air pollution in Beijing reaches dangerous levels
Hkg8171052
Credit: AFP/Getty Images
Air pollution hangs over the skyline as the sun rises over the central business district in Beijing on January 14, 2013. Dense smog shrouded the city with pollution at hazardous levels for a fourth day and residents were advised to stay indoors. AFP PHOTO/Mark RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
