Air pollution in U.S. impacts athletes

Jul 31 - Eight days before the opening ceremony of the Beijing Olympic Games, the Bird's Nest national stadium is shrouded in smog.

Mar. 11 - China says it will guarantee clean air for the Olympics after marathon world record holder Haile Gebrselassie said he would not compete in the Olympic marathon because of air pollution.

June 10, 2008—Air pollution may be stifling flowers' sweet smells, making it harder for bees and other pollinators to find them, say University of Virginia researchers.

Jul 29 - With ten days to go before the start of the Olympics, Beijing is still suffering from smog, but is showing improvement.

Aug. 02 - Six days before the opening ceremony of the Beijing Olympic Games, the Bird's Nest national stadium was visible under clear blue skies.

You can add another item to the long list of American imports from China: Bad Air. This new report contains some shocking numbers.

You can add another item to the long list of American imports from China: Bad Air. This new report contains some shocking numbers.

Its for all. As a human being.

With the Summer Games now going on in Beijing, a big concern for athletes is the city's polluted air.

Tetiana Anderson takes you above New York City in a hot air balloon to show you how weather impacts the flight of these balloons.