When I get time, I'd like to use satellite photos of the arctic into a time lapse video, play it, then ask "Now, what was it you were saying about climate change being a scam?"
And presumably the other side simply pulls out this 2008 Al Gore video where he predicts that the arctic would be ice-free in 5 years:
And if someone actually listens to your video of Gore, he or she will hopefully notice that Gore does not predict anything like that at all - he cites two different researchers, one who says "by 2030", and the other who says "75% chance for the next 5-7 years". The first one is still very much on track. The second one lost his bet - if via the 25% chance or because his modelling was wrong is anyones guess.