Air pollution

The American Lung Association has released its 2008 State of the Air report, which ranks cities with the worst air pollution.

In an effort to improve the city's air quality in time for this summer's Olympic Games, officials in Beijing are planning to halt all construction and other polluting processes for two months starting in mid-July.

With one of the world's higher rates of air pollution, Mexico City is cracking down on one type of emission: cigarette smoke. Smoking has been banned in all public places in the city, including office buildings and restaurants.

This Onion TV news segment highlights Chinese pride in the country's status as the world's top producer of air pollution