Low pollution at the London Olympics

The London Olympics may have been one of the least polluted games in history. Scientists measured key markers of pollution during the games, and conclude that the London 2012 Olympic Games are one of the least polluted thanks to the appalling weather before the games. As part of the Clearflo – Clean Air for London – project, atmospheric scientists have been monitoring air and ground conditions. For the last two years they have measured carbon monoxide, ozone, nitrogen dioxide and aerosol levels, trying to establish what happens to urban pollution and where it goes. For more on this story, see Laboratory News