Beijing Air Pollution Reaches Dangerous Level

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Chinese paramilitary police officers march during the flag-raising... Fotografía de noticiasCeremonia,Ceremonia del alza de la bandera,China,Contaminación,Cuerpo de policía,Cuestiones ambientales,Desastre ecológico,Horizontal,Lugar famoso internacional,Paramilitar,Pekín,Plaza de Tiananmen,SerioPhotographer Collection: Getty Images News 2013 Getty ImagesBEIJING, CHINA - JANUARY 29: Chinese paramilitary police officers march during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing with pollution at hazardous levels in January. (Photo by Feng Li/Getty Images)