Pierre Gosselin (and commenter Bill_W) tips us to this:
Die kalte Sonne website here has just posted the video presentation of Murry Salby in Hamburg in April. If anyone ever demolished the dubious CO2 AGW science, it’s Salby!
Most of the presentation is very mathematical and technical. But the last 10 minutes sums everything up very nicely for the laypersons.
Watch the divergence: