Recent research by Peking University environmental science professors calculated the cost of particulate pollution on human health in the city for 2002 alone at 25,000 deaths and 7.2% of city GDP.

北京大学环境科学工作者最近进行的研究显示，仅在2002年，北京的颗粒物污染就与25,000人的死亡有关，造成的经济损失相当于GDP的7.2%。

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Medical science, bolstered by research from the U.S.Environmental Protection Agency, shows a strong link between air pollution and heart disease and stroke.

VOA: standard.2010.08.04