Leaf has published several papers in Europe and in the United States on the policy aspects of regional and global air pollution.

利夫先生从政策层面就区域和全球污染问题的解决在欧洲及美国发表了数篇论文。

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Air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious damage occurring in the developing world.

在福利支出方面，空气污染每年给全球经济带来的损失高于5万亿美元，而对发展中国家的损害最为严重。

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"So global warming could produce more air pollution in the arctic," she said.

“因此，可以说全球变暖加重了北极圈的空气污染。”她说道。

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"In fact, when you burn coal, you emit more acid rain pollution, more air pollution, more smog and more global warming pollution which threatens the entire planet, " said Becker, global warming program director for the Sierra Club.

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One theory is that global warming, caused by air pollution, is at least partly responsible for the increased intensity of weather phenomena.

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Environmental crises surround us: global warming, hazardous waste, resource depletion, air pollution and many more.

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