มลพิษในกรุงปักกิ่ง
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Buildings and the Guomao Bridge are pictured amid heavy haze and smog in Beijing, October 29, 2011.
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Visitors to Tiananmen Square shield themselves from the sun with umbrellas on a hot and hazy day, July 28, 2010.
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Smoke billows from a chimney of a heating plant in Beijing, February 13, 2012.
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Haze blankets the National Stadium, also known as the Bird's Nest, as seen from inside the Olympic Green area during the Olympics, August 7, 2008.