Clark University 2014 |
"The Anthropocene and its Discontents: Ponder the Future of Civilization in the Face of Climate Change" Clark University February 13, 2014 |
Nanotechnology World Wide Town Hall X Northwestern University
October 15, 2013
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"Climate Preparedness" Garrison Institute June 24, 2013 |
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"What is Fracking?" Lawrence Berkeley Lab November 15, 2012 |
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"The Question of Nature: A Geological Perspective on Human-Induced Climate Change" Harvard Graduate School of Arts and Sciences April 26, 2012 |
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"Confronting the Climate-Energy Challenge" University of Rhode Island February 24, 2010 |