I believe that man has added to the CO2 levels over the last 150 years. Having said that, the CO2 levels in the atmosphere went from minuscule to minuscule. One major volcano like Pinatubo adds more CO2 than all of man has added since the industrial revolution. If the climate is warming then blame mother nature. Who wants global cooling? THAT would be a problem.
Its warming on Mars, its warming on the moons of Saturn, its warming on the moons of Jupiter ...
Hmm ... what could be causing this ... hmmm ... is there anything they have in common? ... hmmm ... I dont think there are any SUVs on Mars ... but I am not positive.