When Can We Trust the Claims of Medical Research?
David Friedman, Professor of Statistics, UC Berkeley
Diana Petitti, Director of Research and Evaluation, Southern California Kaiser Permanente

Is Free Will an Illusion?
William Newsome, Professor of Neurobiology, Stanford
John Searle, Professor of Philosophy, UC Berkeley

Can We Expect New Einsteinian Revolutions?
Shamit Kachru, Associate Professor of Physics, Stanford
Hitoshi Murayama, Professor of Physics, UC Berkeley

How Does Thinking Depend on Language?
Lera Boroditsky, Assistant Professor of Psychology, Stanford
Geoffrey Nunberg, Professor of Linguistics, Stanford

Does Quantum Mechanics Make Sense?
Michael Fayer, Professor of Chemistry, Stanford
Leonard Susskind, Professor of Physics, Stanford

Should We Ever Set Foot on Mars?
Chris McKay, Planetary Scientist, NASA-Ames Research Center
Margaret Race, Principle Investigator, SETI Institute