Is it a swindle?

I know I'm getting boring now, but I came across the Royal Society's simple guide to the science behind global warming, which nicely gives the counter arguments to some misconceptions put forward by, amongst others, 'The Great Global Warming Swindle'. It can be quite difficult to syphon out any real scientific information from the media (terrified as they are of being too alarmist or not alarmist enough), so why not go right to an excellent source of scientific knowledge - the national academy of science for the UK and Commonwealth.