I keep seeing TED talks referenced here and there. I really need to start checking that site more often. Here are a couple of cool presentations.

Amory Lovins on winning the oil endgame (sure to enrage all you car-haters out there):

Larry Brilliant makes the case for optimism, or at least that’s what the talk is called — I watched it, and actually he makes an incredibly powerful case for pessimism, followed by a much weaker case for optimism:

Here David Keith talks about shooting sulfur particles up into the atmosphere to slow global warming — the good and the bad. He comes down against it, but on the way he’s incredibly informative: