Freeman Dyson

… is not a climate-change denier, but has doubts about how bad the impacts will be.

Just back from Freeman Dyson’s Marschak Memorial Lecture; I hope to have a videotape and text up next week. Clearly both a very powerful mind and a free, playful spirit.

At lunch, he was asked about the NYT Magazine piece and said it was mostly wrong. He doesn’t doubt global warming or human contributions to it; he’s dubious about estimates of damage, especially if (as he thinks) the overall effect of warming is to reduce extremes of cold (diurnal, seasonal, and latitudinal) rather than increasing temperatures when/where it’s already hot. He regards sea-level rise as the biggest threat, but also believes that he oceans have been rising at about 150cm per century for the past 10,000 years.

Author: Mark Kleiman

Professor of Public Policy at the NYU Marron Institute for Urban Management and editor of the Journal of Drug Policy Analysis. Teaches about the methods of policy analysis about drug abuse control and crime control policy, working out the implications of two principles: that swift and certain sanctions don't have to be severe to be effective, and that well-designed threats usually don't have to be carried out. Books: Drugs and Drug Policy: What Everyone Needs to Know (with Jonathan Caulkins and Angela Hawken) When Brute Force Fails: How to Have Less Crime and Less Punishment (Princeton, 2009; named one of the "books of the year" by The Economist Against Excess: Drug Policy for Results (Basic, 1993) Marijuana: Costs of Abuse, Costs of Control (Greenwood, 1989) UCLA Homepage Curriculum Vitae Contact: Markarkleiman-at-gmail.com