[ianlippert]

Another good arguement from the film is that CO2 emissions didnt really get going until 1940. Although the industrial revolution has been around for a couple of hundred years, it has mostly been limited to very few geographic areas. The graphs presented in the film claim that the current warming trend started early in the 20th century and actually dipped (global cooling scare) after 1940. It seems really hard to believe that if human CO2 causes global warming we would see it within 50 years. The movie claims that it takes the oceans 800 years to warm up, 50 years is nothing on a geological time scale.

I really liked the arguement that global warming causes an increase in CO2, they even show the graphs where CO2 lags behind global temperatures implying the causation. If the data presented in the film is true, there is no way I could possible believe in global warming any more.