Angelo Pentaris is a drummer, disability advocate and motivational speaker.

Robert Gross is a historian at the University of Connecticut and the author of "The Transcendentalists and Their World."

James Fallon is a neuroscientist and professor of psychiatry and human behavior at UC Irvine.

Dean Baker is an economist at the Center for Economic Policy Research. His blog is called "Beat the Press."

Laurence Bergreen is a historian and author of several biographies of famous explorers, including most recently, "In Search of a Kingdom: Francis Drake, Elizabeth I, and the Perilous Birth of the British Empire."

Charles Prebish is a former professor of religious studies, and the author of numerous books including, "American Buddhism."

Donald Prothero is a paleontologist, geologist and the author of numerous books, including "Abominable Science" and "The Story of Life in 25 Fossils."

Jan Swafford is a composer and author of multiple biographies, the most recent of which is, "Mozart: The Reign of Love."

Nicole Prause is a neuroscientist and sexual psychophysiologist, and is the founder of Liberos LLC.

Martin Gurri is a former CIA analyst and the author of "The Revolt of the Public and the Crisis of Authority in the New Millennium."