Ukraine's leading English-language newspaper since 1995

Moscow has troubling levels of air pollution, which present a daily strain on lung health. Unless you're in the oil business, there's little reason to brave the choking pollution of Baku, Azerbaijan. Fetid water, oil ponds and life-threatening levels of air pollution emitted from drilling and shipping land the former Soviet manufacturing center at the bottom of this year's list as the world's dirtiest city.

Baku is bad, but far from alone. For residents of the 25 cities on this year's list, black plumes of smoke, acid rain and free-flowing sewage are part of everyday life. Not as immediately visible: the impact on the population's health and life expectancy.

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