Atmospheric chemist Kenneth Rahn regularly travels to China to consult with scientists there about the country's air pollution problem. Rahn took your questions about pollution in Beijing during the run-up to the Olympic Games.
Are there any long term studies showing the effects of pollution on the general health of the Chinese population?
Kenneth Rahn responds:
Sorry, but this is not my field. I suspect that such studies are still few and far between in China. I have seen conflicting claims for excess deaths from air pollution, and so don't know what to believe.
One big confounding factor is the omnipresence of cigarette smoke in China. It is nearly impossible to escape from, because so many men smoke indoors. If you are a smoker, you can forget about outdoor air pollution, because it is negligible relative to your indoor pollution. The same probably holds for living with a smoker.