Over the last little while, I keep having these ideas. It seems, however, that I never have the time or energy to put them up here. More detail on the cause of that later. For now though, this is too important to let languish in my inbox. Credit to Robo for noticing this;

Global Dimming;

http://www.bbc.co.uk/sn/tvradio/programmes/horizon/dimming_trans.shtml