Article Tags: Girma Orssengo, [email protected]

CO2 is known to be a heat trapping greenhouse gas. The theory of man made global warming assumes that the CO2 in the atmosphere (about 0.04% of air) that has increased due to use of fossil fuels by humans has been causing global warming.
In science, the method used to verify the validity of a theory is to compare the theory with actual observations. To verify the theory of man made global warming, we may compare the change in CO2 in the atmosphere to change in mean global temperature during the same period.