Working on the Greenhouse?

News that the atmospheric levels of carbon dioxide have exceeded 400 parts per million in the measurements obtained at the Mauna Loa observatory on the remote 'Big Island' of Hawaii (http://www.esrl.noaa.gov/gmd/ccgg/trends/) are probably 'ceremonial' rather than scientifically meaningful (like a 'triple dip recession'). The attainment of the figure so early, however, is a clear indication that attempts to contain the release of 'climate changing gases' has been spectacularly ineffective.