Via Treehugger, a ten minute interview by Revkin of McKibben. (I think they talk past each other a bit without noticing. Revkin injects a bit of Pielkeism in there and I don't know if McKibben even notices.)

But McKibben has come to the same place in the last year or so that many of us have. Our future is down to difficult vs impossible. The easy solutions have been foreclosed. It's officially too late to avoid a damaged world.

The basic issue of the planet right now is that it's disintegrating. That's even more basic than the fact that we have to keep developing and people need energy and all that. There's no way anyone is going to develop anything, including energy or anything else, if their whole friggin country is washing away.
There's no happy ending where we prevent climate change anymore.

Another video I highly recommend is a long one featuring Ben Santer, introduced by Stephen Schneider, last year, telling the climategate story in a radically unfamiliar way, which is to say his own experiences in trying to do the right thing under years of personal attack. This one was dug up somehow by GreenMan Peter Sinclair of Climate Crocks fame. Even without the questions and the introduction it's about an hour, so set aside some time. But if you're seriously interested in climate science, watch the main presentation "Why Such Resistance?" with your full attention. There are some great quotes in that talk! But ultimately it's sad and shocking.

(There's also an interesting but peculiar video at that GreenMan link with the odd couple of Santer and Chris Mooney, who I don't really think make a cohesive piece together.)