Seasons & episodes

Tonight Stephen welcomes Oklahoma Representative and Libertarian Presidential candidate, Bob Barr.

Tonight Stephen welcomes conservative political commentator and author of Churchill, Hitler, and "The Unnecessary War": How Britain Lost Its Empire and the West Lost the World, Pat Buchanan

Tonight Stephen welcomes New York columnist Phil Weiss.

Tonight Stephen welcomes wildlife scientist and author of Life in the Valley of Death: The Fight to Save Tigers in a Land of Guns, Gold, and Greed, Alan Rabinowitz.

Tonight Stephen welcomes journalist and author of The Ten-Cent Plague: The Great Comic-Book Scare and How It Changed America, David Hajdu.

Tonight Stephen welcomes professor of environmental health sciences at Columbia University, Dixon Despommier.

Tonight Stephen talks with biologist and author of Only a Theory: Evolution and the Battle for America's Soul, Kenneth Miller.

Tonight Stephen welcomes the co-founder of the Berkman Center for Internet Security and author of The Future of the Internet--And How to Stop It, Jonathan Zittrain.

Tonight Stephen welcomes the author of The Brief Wondrous Life of Oscar Wao, Junot Diaz.

Tonight Stephen welcomes Bible scholar and author of Surprised by Hope: Rethinking Heaven, the Resurrection, and the Mission of the Church, Bishop N.T. Wright.

Tonight Stephen welcomes political satirist and author of This Land Is Their Land: Reports from a Divided Nation, Barbara Ehrenriech.

Tonight Stephen welcomes rapper, actor and star of Hancock, Will Smith.

Tonight Stephen welcomes astrophysicist and director of the Hayden Planetarium, Neil DeGrasse Tyson. Also, Stephen talks with architecture critic and author of Up from Zero: Politics, Architecture, and the Rebuilding of New York, Paul Goldberger.

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Tonight Stephen welcomes the head of Yale's Center for Business the Environment, Dan Esty. Also Stephen talks with Lama Surya Das about whether Barack Obama should become a Tibetan Buddhist.

Tonight Stephen welcomes journalist and author of Let Them In: The Case for Open Borders, Jason Riley. Also, Stephen talks with Julia Sweig, author of Friendly Fire about the rise of Venezuela and other South American nations rise out of poverty.

S4 · E89Rush 2008-07-16＋

Tonight Stephen welcomes rock group Rush. They perform Tom Sawyer

Tonight Stephen welcomes the wife of former Presidential candidate John Edwards and author of Saving Graces: Finding Solace and Strength from Friends and Strangers, Elizabeth Edwards.

Tonight Stephen welcomes Virginia Senator and author of A Time to Fight: Reclaiming a Fair and Just America, Senator Jim Webb.

Tonight Stephen welcomes journalist and author of OBD: Obsessive Branding Disorder: The Illusion of Business and the Business of Illusion, Lucas Conley.

S4 · E93Nas 2008-07-23＋

Tonight Stephen welcomes rapper Nas who is representing www.colorofchange.org and their petition to FOX to stop racist bias in news.

Tonight Stephen welcomes astronaut Garrett Reisman.

Tonight Stephen welcomes country music superstar Toby Keith and star of Beer for My Horses, plus Keith performs the song of the same name.

Tonight Stephen welcomes Eric Roston, author of The Carbon Age: How Life's Core Element Has Become Civilization's Greatest Threat.