Chinese paramilitary police officers salute during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in...
Men rides a three-wheeled motorcycle on the street through power station chimney during severe pollution on January 29, 2013 in Beijing, China. The...
Beijing residents wearing masks walk through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's...
Beijing residents wearing masks walk in front of a fog-shrouded National Stadium as severe pollution continues to affect the capital on January 29,...
Woman wearing a mask walks across a square in front of a fog-shrouded National Stadium as severe pollution continues to affect the capital on January...
Beijing residents wearing masks walk through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's...
Beijing residents wearing masks walk through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's...
Beijing residents wearing masks walk through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's...
Man wearing a mask walks through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's ruling...
Beijing residents wearing masks walk through fog as severe pollution continues to affect the capital on January 29, 2013 in Beijing, China. China's...
Beijing residents wearing masks walk in front of a fog-shrouded National Grand Theater as severe pollution continues to affect the capital on January...
Tourist walk on the Tiananmen Square during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing with pollution...
Chinese paramilitary police officer passes through Changan Avenue during the flag-raising ceremony with severe pollution at Tiananmen Square on...
Chinese paramilitary police officers march during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in Beijing,...
Chinese paramilitary police officers march during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in Beijing,...
Chinese paramilitary police officers march during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in Beijing,...
Men rides a bicycle as tourists waiting the flag-raising ceremony during severe pollution at Tiananmen Square on January 29, 2013 in Beijing, China....
Chinese paramilitary police officers salute during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in...
Chinese policeman guards under the Tiananmen Gate during dangerous levels of air pollution on January 29, 2013 in Beijing, China. The 4th dense fog...
Little girl wears the cartoon mask at the Tiananmen Square during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops...
Little girl wears the cartoon mask at the Tiananmen Square during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops...
Men wearing the mask rides a bicycle on the street during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Men wearing the mask rides a bicycle on the street during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Men wearing the mask rides a bicycle on the street during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Men wearing the mask rides a bicycle on the street during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Man wearing the mask rides amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing with pollution...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...
Beijing residents wearing the mask ride amid fog during severe pollution on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing...