I have a confession to make - I've never seen The Inconvenient Truth. Or The 11th Hour (If you missed that one, it was Leo DiCaprio's contribution to the climate change debate). It might sound slightly arrogant, but my sense is they won't tell me anything I don't already know. Plus it's over two years since Al Gore's Powerpoint slides made it into cinemas and with climate science accelerating at a furious rate, it's no doubt already looking a little archaic.