Christa Parravani talks about her book, "Her," a memoir about the special bond she shares with her identical twin sister.
Intelligent. Optimistic. Curious.
Audio
Media theorist Douglas Rushkoff talks about his new book, "Present Shock: When Everything Happens Now."
What if you could take a pill or download netware to supercharge your brain? Physicist Michio Kaku says augmented intelligence and memory playback systems are the future of brain science.
Cornel West and Tavis Smiley take on the mainstream media and the political establishment.
Ayelet Waldman talks with Jim Fleming about maternal ambivalence and loving children when you don't like them.
Clay Shirky is an internet expert and author of "Here Comes Everybody." He tells Steve Paulson how wide acceptance of social networking sites has dramatically changed our expectations of the media and even the role of journalism.
Filmmaker Albert Nerenberg's Dangerous Idea? Laugh more.
You can also watch his laughter hack video.
Erik Trinkaus tells Steve Paulson that many of our assumptions about them, and our other "cave man" ancestors are just plain wrong.
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