John Hockenberry, Journalist; correspondent for Dateline, NBC

John Abramson, M.D., Harvard Medical School; author, Overdosed America
Arthur Caplan, Director, Center for Bioethics, University of Pennsylvania
Lawrence Diller, M.D., Author of Running on Ritalin
Martha Farah, Ph.D., Director of Cognitive Neuroscience and Professor of Psychology, University of Pennsylvania
Joshua Foer, Freelance science journalist
Michael Gazzaniga, Ph.D., Director, SAGE Center for the Study of Mind, University of California, Santa Barbara; member, President's Council on Bioethics
William B. Hurlbut, M.D. Consulting Professor, Neuroscience Institute, Stanford University; member, President's Council on Bioethics
Peter A. Lawler, Ph.D., Dana Professor and Chair of the Department of Government and International Studies, Berry College; member, President's Council on Bioethics
Gary Lynch, Ph.D., Professor of psychiatry, University of California, Irvine
Michael J. Sandel, Ph.D., Professor of government, Harvard University; former member, President's Council on Bioethics
Sally Satel, M.D., Resident Scholar, American Enterprise Institute; co-author of One Nation Under Therapy
Justice Antonin Scalia, U. S. Supreme Court
Tim Tully, Ph.D., Professor, Cold Spring Harbor Laboratory