Marginal Revolution: Not putting their money where their mouths are

This guy is clever - he is betting global warming nay-sayers that temperatures will rise over the next 15 years. The lack of takers really says something about the nay-sayers' confidence in their non-scientific views.

"James Annan, a climate scientist, has been trying to get skeptics of global warming to put up or shut up, mostly with no success on either front."