Coming into the home stretch on our Top 10 TED Talks for the Sustainability minded, we have James Hansen describing very clearly what is going on with our climate -- Spoiler Alert, it is changing in ways that are not good.
This talk is really, really informative, and Hansen is one of the top researches in his field. That being said, make sure you have had plenty of coffee, because it is just a little dry.
This one speaks for itself, I think. The case is pretty clear. The timing was serendipitous for him too, because he sounds like an oracle when he talks about droughts in the bread basket.