"Levitt now says that the chapter wasn’t meant to lend credibility to global warming denial — but when you open your chapter by giving major play to the false claim that scientists used to predict global cooling, you have in effect taken the denier side. The only way I can reconcile what Levitt says now with that reality is that he and Dubner didn’t do their homework — not only that they didn’t check out the global cooling stuff, the stuff about solar panels, and all the other errors people have been pointing out, but that they didn’t even look into the debate sufficiently to realize what company they were placing themselves in.

And that’s not acceptable. This is a serious issue. We’re not talking about the ethics of sumo wrestling here; we’re talking, quite possibly, about the fate of civilization. It’s not a place to play snarky, contrarian games."

Weitzman in context - Paul Krugman Blog - NYTimes.com