Originally posted by Malacasta
The Great Warming Swindle, was a film made as a polemic.

Polemics aren't the best method of informing people, especially when this particular one is extremely controversial and has been criticized by a large section of the scientific community as being inaccurate, using old data, misinterpreting data, misrepresenting interviewees and taking them out of context etc.
I have not seen this particular film, but I have seen a number of articles (yeah, I prefer to read a document on screen than to watch a documentary) which include tabulated or graphed data showing CO2 levels in the atmosphere and global average temperatures, and the correlation is far from enough for an unbiased observer to declare a link. Obviously there are other factors involved (eg SO2 or H2O, or possibly the actual location of the gases involved (upper/lower atmosphere) or somesuch); it's even possible that carbon dioxide actually has NO appreciable effect on surface temperature, although unlikely. As to the type of film... so it's called a polemic. So what? That just means it's challenging the most-held view, nothing more. And challenging a widely-held view is one of the best ways to promote scholarly discussion.

This thread has drifted rather a lot from its original topic... although, it's probably not worth forking, as the OT is mostly a dead topic now anyway.