This guy was on the IPCC and is a distinguished professor at M.I.T. Because of this, I’m going to assume he’s pretty credible. So why is he contradicting everything else I seem to hear? Maybe it’s like if a biology professor at Princeton told me evolution was a myth: I’d just think he was an exceptional kook and irrelevant compared to the other 99.99% of people in his field. Either way, something fishy is going on. My best bet is that global warming, while a problem that needs to be urgently solved, is not as catastrophic as movies like The Day After Tomorrow make it out to be.