At yesterdays meeting in London David Redfern suggested everyone get hold of AQAB GGB5 (legacy paper) for January 2009 and June 2009 which can be downloaded from the AQA site.
I'm also starting with global warming, after the AS papers I want to teach something that will convince students that geography is worth sticking with. Just starting to plan but am finding the new A2 (silver) textbook a good starting point.