I think this has been floating around for a while, but I just watched it now, and it’s well worth it. As wfmu blog (where I found it) says:
“Wonderingmind 42” tells us exactly how global climate change is going to cause the end of the world. Sure, An Inconvenient Truth did it pretty well, but this guy does it without being instantly polarizing (sorry, Al, the right hates you to pieces), and with way more charming dorkiness. But most importantly, he describes the science and facts behind it all in a way that even your stubborn conservative Christian uncle can relate to – and maybe he’ll even pay attention to the facts when they are presented by this nice, clean-cut high school science teacher.
And the point of it all is that deciding what to do about climate change isn’t a question of certainty. It’s a question of risk management.