Paul Krugman: Saving the Planet Won't Kill the Economy

Nate Silver got a lot of grief when he chose Roger Pielke Jr., of all people, to write about the environment for his new web site, FiveThirtyEight. Mr. Pielke, a professor at the University of Colorado, is regarded among climate scientists as a concern troll - someone who pretends to be open-minded, but is actually committed to undermining the case for emissions limits any way he can.

But is this fair?

Well, I'm happy to report that Mr. Pielke recently wrote a letter to the editor of the Financial Times about the economics of emissions caps - something I know a fair bit about - that abundantly confirms his bad reputation.