He is a member of the [[National Academy of Sciences]] and the Science and Economic Advisory Council of the Annapolis Center for Science-Based Public Policy.<ref>[http://www.environmentaldefense.org/article.cfm?contentid=3804&CFID=15408998&CFTOKEN=25199304 Global Warming Skeptics: A Primer], Environmental Defence, Dec 19, 2006</ref> He previously held positions at the [[University of Chicago]] and [[Harvard University]], and was a contributer to Chapter 4 of the [[IPCC]]<ref>http://www-eaps.mit.edu/faculty/lindzen.htm, Lindzen, Richard S. 2007-04-05</ref> | He is a member of the [[National Academy of Sciences]] and the Science and Economic Advisory Council of the Annapolis Center for Science-Based Public Policy.<ref>[http://www.environmentaldefense.org/article.cfm?contentid=3804&CFID=15408998&CFTOKEN=25199304 Global Warming Skeptics: A Primer], Environmental Defence, Dec 19, 2006</ref> He previously held positions at the [[University of Chicago]] and [[Harvard University]], and was a contributer to Chapter 4 of the [[IPCC]]<ref>http://www-eaps.mit.edu/faculty/lindzen.htm, Lindzen, Richard S. 2007-04-05</ref> |