A man walks past a cement factory on the outskirts of Baokang

 
A man walks past a cement factory on the outskirts of Baokang
A man walks past a cement factory on the outskirts of Baokang, Hubei province February 26, 2009. Merging separate fights against air pollution and climate change could save cash and encourage developing nations such as China to do more to curb global warming, researchers said. REUTERS/Stringer (CHINA). CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.