April 28, 2012: Unite Against the War on Women march and rally.
March 18, 2012: Left Forum, “Thomas Paine: Contemporary Debates, Controversies, and Political Relevance.”
Aug. 20, 2011: New York Society for Ethical Culture, “Good Without God: Ethics for Freethinkers” with Massimo Pigliucci, Anne Klaeysen, and Roy Speckhardt.
April 25, 2011: Yale University, “Perspectives on Atheism” with Chris Stedman.
April 17, 2011: New York University, “A Public Dialogue on Morality” with Father Jonathan Morris and Chris Jansing.
April 8-10, 2011: Northeast Conference on Science and Skepticism.
March 8, 2011: USG Lecture Series at Stony Brook University: host to Christopher Hitchens.
Dec. 4, 2010: SkeptiCamp NYC, “What Science Can — And Cannot — Say About Religion.”
Oct. 13, 2010: Tufts University, “The Present and Future Role of Religion” with Brian Glenney.