Wednesday, March 12th 2008, 3:18 AM EDT
Well firstly CO2 is not a pollutant. It is the basis of all life on this planet - starting with plants.
Man has a very small effect on the total amount of CO2 in the atmosphere. CO2 is flowing both ways between the atmosphere and the sea, land and plants all the time. 96% of this flow is nothing to do with man, 4% at the most is to do with man.