Tuesday, the World Health Organisation published a report about the air pollution in 2012. According to this report, about 7 millions of dead this year are directly in link with the air pollution, more than the tobacco.
As an irony, some countries of the Western Europe just go out a disturbing smog emergency on their main cities. This ecological emergency seems to be only the consequence of a static weather which did not blew wind on these cities. So, the pollution of these cities was not pulled away and stayed where it was produced, logic (!).