Are humans hard-wired to forgive? Psychologist Michael McCullough's research traces the evolutionary roots of forgiveness and revenge.
Are humans hard-wired to forgive? Psychologist Michael McCullough's research traces the evolutionary roots of forgiveness and revenge.
Ayaan Hirsi Ali may be the world’s most famous critic of Islam. Born a Muslim, Hirsi Ali fled to the Netherlands where she eventually became a member of Parliament...
Contemplating the multiverse is mind-blowing, but if you want a truly earth-shattering controversy in physics, you have to go back 500 years to Copernicus' radical theory. Dava Sobel tells his story.
Daniel Levitin is a neuroscientist with a twist; he's also a musician and record producer. He says brain imaging is showing how our brains listen to and make music.
The future of farming may be up in the air -- literally. Microbiologist Dickson Despommier's concept of skyscraper farming has excited scientists, architects and politicians. Could multi-story farms solve the global hunger problem?
Erik Davis, a fifth generation Californian, tells Jim Fleming that geographically and culturally, his state supports diversity and exploration.
Michelle Wildgen recommends "Crossing to Safety" by Wallace Stegner.
Physicist Michio Kaku's Dangerous Idea? A virtual "library of souls."