This is quite possibly the best argument Nay discussion regarding Global Climate Change and its effects yet. You might say there are some holes in his discussion and this is quite possibly true. However; take a look at his other response videos. This video is an over simplified version and he goes into further details in the latter ones to resolve some of these holes.
I think he hit the nail on the head by stating that we can’t determine if Global Climate Change is real or not. What we can say is that regardless of how that turns out the world will be better off if we do something now before it’s too late.
If you don’t want to watch all of his videos at least watch this one and please pass it on if you find it interesting.