Copernicus changed the world with his revolutionary idea that the sun, not the Earth, is the center of our solar system. Dava Sobel tells us why this momentous discovery wasn't easy for Copernicus himself.
Intelligent. Optimistic. Curious.
Audio
Chris Kilham tells Jim Fleming that it’s OK to eat chocolate and has the data to prove it.
Psychologist Steven Pinker's Dangerous Idea? We may be living in the most peaceful time of our species’ existence.
The asexual movement calls into question everything you thought you knew about love and romance. We talk with David Jay, founder of AVEN, the Asexuality Visibility and Education Network.
Fred Pearce tells Steve Paulson he went to over 30 countries and discovered people are simply taking too much water out of the world's river systems.
Chuck Klosterman talks about "Through a Glass, Blindly," the essay about voyeurism in his book, "Eating the Dinosaur."
Carl Honore talks with Anne Strainchamps about how the Slowness movement got started and how it's developed into a revolution.
Environmental writer Connie Barlow says that rhinos and elephants and tigers are native to North America and that we should bring back the Cheetah.
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