With help from Freud, neuropsychologist Mark Solms locates consciousness in choice.More
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Science and Technology
Robert Macfarlane spent a decade exploring caves, mines, catacombs and sewers, on a quest to discover the deep underground. He found a subterranean world of wonder and horror.More
Andreas Weber is a German biologist and philosopher with a highly unconventional way of describing the natural world, one in which "love" is a foundational principle of biology.More
Do you know what an earthquake sounds like? Geophysicist Ben Holtzman collects recordings from around the world — from the Fukushima disaster to the manmade earthquakes caused by fracking. We hear examples of these seismic rumbles.More
One of the greatest walkers of our time, William Helmreich — known for exploring every street in New York City — was an early casualty of COVID-19. But composer David Rothenberg got to walk with him one last time, around wetlands in Queens.More
Magician Nate Staniforth has a dangerous idea for you. Tonight, after dark, go outside and look up to the sky.More
David Barrie is fascinated by how animals find their way. How do they travel thousands of miles across oceans or continents, to a place they've never been, without any other creature to show them the way?More
Science journalist Sonia Shah, herself the child of Indian immigrants, has long been fascinated with the way animals, people and even microbes move. She says migration is both a crisis and an opportunity.More
Novelist Siri Hustvedt knows how the creative process feels. Neuroscientist Heather Berlin knows what it looks like in the brain. Together with Steve, they explore the emerging science of creativity.More
Imagine driving over a hill and seeing hundreds of zebras or a thousand wildebeest. Anne and Steve were lucky enough to witness this spectacle in the Serengeti. Their expert guide, Moses Augustino Kumburu, describes the Great Migration.More
Thousands of sandhill cranes gather each fall on the banks of the Wisconsin River before they head south for the winter. Anne and Steve visited the Aldo Leopold Foundation in Baraboo, Wisconsin to witness this migration firsthand, along with their guide: wildlife ecologist Stan Temple.More
The fact that so many animals migrate — sometimes thousands of miles — has puzzled people over the ages. Why do they take such risky journeys? Conservation biologist David Wilcove studies migration, and he says the scale of migration is staggering.More
Humans are not the only creatures who vocalize. Birds, whale and frogs have voices too—but are we listening? Bernie Krause has been recording environmental sounds all over the world since the 1970s. He says it's time for humans to shut up.More
Science writer Deborah Blum on the government scientists who made the case for food regulation by "eating dangerously."More
Suzanne O’Sullivan on what medical science is missing about mysterious illnesses. More
There's a famous sequoia named General Sherman that's the biggest tree on the planet. It has its own distinctive history linked to the Civil War general and a radical anarchist group. Cultural historian Daegan Miller tells this fascinating story.More
Richard Powers’ “The Overstory” has overturned a lot of conventional thinking. Though human characters shape the plot of this 500-page epic, the real heroes are trees.More
Suzanne Simard is a forest ecologist who's revolutionizing our understanding of trees. She has discovered that trees use underground networks to communicate and cooperate with each other. It turns out that whole forests can exist as a superorganism.More