Thats one of the reasons I dont really buy the global warming panic thing. Earth and other palnets have had their cycles since long before humans even lit a joint. Mars is a good example. Althou global warming is real, the sole cause is not CO2. They still cant prove whether CO2 increases lead to an increase in temps or if increase in temps leads to CO2 increase due to melting of ice which contains trapped air (including CO2) and is released when melting. Although we (humans, not only hummer drivers) contribute a great deal, I think the planet is just doing its own thing. Moslty the current trend in my opinion is related to increased sun activity.
If we are to work or reducing emmisions or even recapturing already released CO2 we should be very very careful, or we might cause an unscheduled ice age.
All this is just how i see it based on some facts that I have seen, and i have not seen all the facts. So dont flame me.
