A portable alcohol vaporizer hits the market, providing an innovative way to get dangerously drunk.
Street artist and TED Prize winner JR shares examples of his provocative and often dangerous work in Brazil, Pakistan and the West Bank.
Stephen says goodnight.
The brutal terrorist group ISIS tightens its grip on Syria, inspiring Newt Gingrich to write a fictional speech by Ronald Reagan.
Stephen strikes terror in the heart of ISIS with a radio broadcast inspired by "War of the Worlds."
Poet, actor and musician Saul Williams chats about his role in the Tupac-inspired musical, "Holler If Ya Hear Me."
Congresswoman Marcia Fudge describes the many things Cleveland has to offer, from the Rock and Roll Hall of Fame to state-of-the-art face transplants.
"Masters of Sex" star Michael Sheen talks about his role as Dr. William Masters, a pioneering sex researcher in the 1950s.
David Letterman announces his retirement from "Late Show," and Stephen marvels at the challenge of filling his shoes.
"A Window On Eternity" author Edward O. Wilson explains why he chose to study ants and describes the uniquely rich biodiversity of Mozambique's Gorongosa National Park.
"The Nixon Defense" author John Dean discusses the extent of President Nixon's knowledge of the Watergate break-in and ensuing cover-up.
Ronan Farrow discusses digital media as a tool for civic action and his MSNBC show, "Ronan Farrow Daily."
"O'Reilly Factor" correspondent Jesse Watters hits the streets in a segment highlighting the ignorance of America's youth.
Hasbro launches an assault on traditional Scrabble vocabulary by adding thousands of trendy words to the game's official dictionary.
Massive protests break out in Ferguson, Missouri after a white police officer shoots an unarmed black teenager.
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