A very informative documentary about the real cause of global warming. It clearly discuss about the fact that CO2 is not cause of global warming. Take a look also at the Great Global Warming Swindle and Green House Conspiracy in google video. This documentary discusses many topics that are not covered in the Swindle such as the hockey stick graph, from the viewpoint of Willie Soon and Sallie Baliunas. Very good scientific informations on the subject here.