A vendor rides his tricycle near a coal-fired power plant in Beijing 

A vendor rides his tricycle near a coal-fired power plant in Beijing on Friday, April 12, 2013. China, the world's largest producer of carbon dioxide, is directly feeling the man-made heat of global warming, scientists conclude in the first study to link the burning of fossil fuels to one country's rise in its daily temperature spikes. (AP Photo/Andy Wong)
Associated Press
A vendor rides his tricycle near a coal-fired power plant in Beijing on Friday, April 12, 2013. China, the world's largest producer of carbon dioxide, is directly feeling the man-made heat of global warming, scientists conclude in the first study to link the burning of fossil fuels to one country's rise in its daily temperature spikes. (AP Photo/Andy Wong)
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