Carbon Dioxide irrelevant in climate debate says MIT Scientist"More simply put, the UN results illogically predict that as the oceans got warmer, the earth would simply hold more heat. The UN explains that it is CO2 which is holding this extra energy. This theory is not supportable by the simple fact that CO2 cannot hold that much heat, it is a very poor greenhouse gas compared with water."
If you want a real explanation for why CO2 levels are not the threat the warmists make them out to be; look at page 24, of the source article, here:
http://scienceandpublicpolicy.org/images/stories/papers/originals/co2_report_july_09.pdf
Note, there's a logarithmic (exponential) relationship between the levels of CO2, and the greenhouse effect. The incremental impact of CO2 drops off very fast. Warmists try to hide this fact — so that they can grossly exaggerate the effect.