Smog in Northern China Closes Highways, Cancels Hundreds of Flights: http://ift.tt/2iUptsm![China's capital city started the year under a heavy blanket of grey smog, with a concentration of toxic particles 20 times higher than the maximal level recommended by the World Health Organization]()
Heavy smog in northern China caused the closure of several highways and hundreds of flights Sunday. finish reading at http://ift.tt/2inlPKK
Heavy smog in northern China caused the closure of several highways and hundreds of flights Sunday. finish reading at http://ift.tt/2inlPKK