Science Daily 
January 14, 2012
Scientists have shown that a newly discovered molecule in Earth’s atmosphere has the potential to play a significant role in off-setting global warming by cooling the planet.
In a breakthrough paper published inScience, researchers from The University of Manchester, The University of Bristol and Sandia National Laboratories report the potentially revolutionary effects of Criegee biradicals.
These invisible chemical intermediates are powerful oxidisers of pollutants such as nitrogen dioxide and sulfur dioxide, produced by combustion, and can naturally clean up the atmosphere.
Although these chemical intermediates were hypothesised in the 1950s, it is only now that they have been detected. Scientists now believe that, with further research, these species could play a major role in off-setting climate change.