Air pollution in China

(151201) -- BEIJING, Dec. 1, 2015 () -- People ride in fog in Beijing, capital of China, Dec. 1, 2015. Heavy fog hit Beijing on Tuesday....

(151201) -- BEIJING, Dec. 1, 2015 () -- Artist Kong Ning wearing a wedding dress made up with 999 respirators walks on the street to call pe...

(151201) -- BEIJING, Dec. 1, 2015 () -- A man wearing respirators walk on the street in Beijing, capital of China, Dec. 1, 2015. Heavy fog h...

(151201) -- BEIJING, Dec. 1, 2015 () -- A man takes photos of the fog at Capital International Airport in Beijing, capital of China, Dec. 1,...

(151201) -- BEIJING, Dec. 1, 2015 () -- Cars ride in fog in Beijing, capital of China, Dec. 1, 2015. Heavy fog hit Beijing on Tuesday.    (/...

(151201) -- BEIJING, Dec. 1, 2015 () -- People wearing respirators walk on the street in Beijing, capital of China, Dec. 1, 2015. Heavy fog...

(151201) -- BEIJING, Dec. 1, 2015 () -- People wearing respirators walk on the street in Beijing, capital of China, Dec. 1, 2015. Heavy fog...

(151201) -- BEIJING, Dec. 1, 2015 () -- People wearing respirators walk past the China Central Television (CCTV) headquarters in Beijing, ca...

(151201) -- BEIJING, Dec. 1, 2015 () -- Artist Kong Ning wearing a wedding dress made up with 999 respirators walks on the street to call pe...

(151201) -- BEIJING, Dec. 1, 2015 () -- A girl wearing respirator walks at Shichahai in Beijing, capital of China, Dec. 1, 2015. Heavy fog h...

(151201) -- BEIJING, Dec. 1, 2015 () -- People visit the Tiantan Park in Beijing, capital of China, Dec. 1, 2015. Heavy fog hit Beijing on T...

(151201) -- BEIJING, Dec. 1, 2015 () -- People visit the Tiantan Park in Beijing, capital of China, Dec. 1, 2015. Heavy fog hit Beijing on T...