HappySqurriel on 26 June 2009
0.03% of the earth's atmosphere is Carbon Dioxide, of that 14% of it is man made in the form of the burning of fossil fuels (for a grand total of 0.00042% of the earth's atmospher is made up of fossil fuel related carbon dioxide). If you assume that the earth is a system which preserves homeostasis (a fair assumption) in order to increase the temperature on the earth 1 degree celcius you have to double the quantity of CO2 in the atmosphere, which would work out to us producing 6 times as much CO2 as we currently are to double natural levels of CO2.
