I hope you’ve heard by now what a swindle that “Swindle” movie is… if you haven’t, please Google it and watch a few of the many MANY thorough debunkings. It’s a flashy and convincing piece of work, for sure, but it’s also full of half-truths, misleading graphs and graphics, mis/unreported data, and logical fallacies galore. The CO2/ice-core “silver bullet” argument is one of the worst.

CO2 in climate works through positive-feedback, aka a vicious circle. The warmer things get, the more there is, and the more there is the warmer things get. Just because the first (warming) causes the second (CO2 rise), it’s wrong to say that the second then can’t possibly cause the first. To say that just because HISTORICALLY temperature levels have risen first we then know that CO2 must have nothing to do with global warming is exactly the same as arguing “Heat causes fire. Therefore we have just proven that fire cannot cause heat.”

Then tell us it’s a lie.