Reporting on Beijing’s smog problems, including controversy over athletes wearing masks people seem to have forgotten that many of the recent Olympic cities have had problems with pollution.

Athens, Atlanta and Los Angeles Olympics all had problems. Reuters takes a look at how each city dealt with it pollution problems. Al of the cities used similar measures to Beijing, including shutting down factories, reducing traffic and improving public transportation.

I am confident we can expect some rain tomorrow to clear the skies before the opening ceremony on Friday.