Pollution in Beijing
![Italy's Camila Giorgi returns the ball to Russia's Svetlana Kuznetsova during the French tennis Open second round match at the Roland Garros stadium in Paris, France.](https://gdb.voanews.com/b881d9a6-8749-406c-b164-8c71e6938ed9_w1024_q10_s.jpg)
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Italy's Camila Giorgi returns the ball to Russia's Svetlana Kuznetsova during the French tennis Open second round match at the Roland Garros stadium in Paris, France.
![A teacher leads her students doing body exercise during class break in a classroom on a foggy day in Jinan, Shandong province, January 14, 2013. Heavy fog enveloped a large swathe of east and central China, with the city's residents being advised to stay](https://gdb.voanews.com/02a2ab87-78b0-4706-971c-204ca6f6b429_w1024_q10_s.jpg)
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A teacher leads her students doing body exercise during class break in a classroom on a foggy day in Jinan, Shandong province, January 14, 2013. Heavy fog enveloped a large swathe of east and central China, with the city's residents being advised to stay
![Cranes atop a residential building under construction in central Beijing, April 18, 2012.](https://gdb.voanews.com/48e63895-e183-455c-8af4-15e8bf5c8c92_w1024_q10_s.jpg)
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Cranes atop a residential building under construction in central Beijing, April 18, 2012.
![Buildings and the Guomao Bridge are pictured amid heavy haze and smog in Beijing, October 29, 2011.](https://gdb.voanews.com/ebcba0b3-6cee-434c-803c-9f8e7b1975d6_w1024_q10_s.jpg)
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Buildings and the Guomao Bridge are pictured amid heavy haze and smog in Beijing, October 29, 2011.
![Visitors to Tiananmen Square shield themselves from the sun with umbrellas on a hot and hazy day, July 28, 2010.](https://gdb.voanews.com/6acbeff9-448f-4490-bff5-1cb969c23484_w1024_q10_s.jpg)
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Visitors to Tiananmen Square shield themselves from the sun with umbrellas on a hot and hazy day, July 28, 2010.
![Smoke billows from a chimney of a heating plant in Beijing, February 13, 2012.](https://gdb.voanews.com/bc4b2cf0-d0e2-4406-87d0-f017c975eafb_w1024_q10_s.jpg)
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Smoke billows from a chimney of a heating plant in Beijing, February 13, 2012.
![A fã de futebol e acima de tudo fanática pela selecção brasileira, Marilza Guimarães da Silva, de 63 anos, posa para a foto com uma réplica do troféu do Mundial de Futebol, vestida numa das suas diversas indumentárias com as cores do Brasil. Brasília, Maio 27, 2014. REUTERS/Joedson Alves ](https://gdb.voanews.com/187795ef-5007-40db-a45c-bd402406f3f8_w1024_q10_s.jpg)
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A fã de futebol e acima de tudo fanática pela selecção brasileira, Marilza Guimarães da Silva, de 63 anos, posa para a foto com uma réplica do troféu do Mundial de Futebol, vestida numa das suas diversas indumentárias com as cores do Brasil. Brasília, Maio 27, 2014. REUTERS/Joedson Alves
![A coal-burning power station at night in Xiangfan, Hubei province, September 15, 2009.](https://gdb.voanews.com/422f0d85-7ff0-4bb1-99df-7cea5f4b46f6_w1024_q10_s.jpg)
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A coal-burning power station at night in Xiangfan, Hubei province, September 15, 2009.
![Paramilitary policemen practice drills inside the Forbidden City amid haze in central Beijing, December 4, 2011.](https://gdb.voanews.com/01be6f3b-00c9-4a0c-b0b2-b38986f75fa9_w1024_q10_s.jpg)
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Paramilitary policemen practice drills inside the Forbidden City amid haze in central Beijing, December 4, 2011.
![Buildings in Beijing are pictured on a day with heavy haze and smog, October 28, 2011.](https://gdb.voanews.com/e024896d-e1ce-4df4-9a92-3750c810a3e7_w1024_q10_s.jpg)
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Buildings in Beijing are pictured on a day with heavy haze and smog, October 28, 2011.