Could Global Warming Be Worse Than You Think?

Following up on the Krugman post on Exxon and global warming, Scientific American's blog discusses the extent to which climate models have been tested against the data and summarizes recent research on this issue indicating the problem may be more severe than present models suggest. This post notes, briefly, the similarity between monetary policy and policy to address global warming when model uncertainty is present and has a summary of the Scientific American discussion.