nice post tau! I love getting an education on this stuff... bikes anyone?!!!

Actually, a growing concern... that could bypass the CO2 issue is methane gas which is evaporating in increasing amounts in the arctic due to global warming. Methane gas is more than 20x as strong a green house gas as CO2...

If you are interested... here is one or many links to read

http://www.guardian.co.uk/environmen...