Our planet is facing a mass extinction crisis. By the end of the century, we could lose up to half of all living species. But people are working hard to save endangered species and habitats, and a few scientists are even trying to bring lost species - like passenger pigeons and woolly mammoths...
Intelligent. Optimistic. Curious.
Science
The story of finding and recording the rarest bird in America: the Ivory-Billed Woodpecker.
Writer Benjamin Kunkel bookmarks Herman Daly's "Steady-State Economics."
It turns out that even the most basic things we believe about ourselves are often wrong. Neuroscientist Julian Keenan says it has to do with how the brain works. He’s the author of the “Face in the Mirror: How We Know Who We Are.”
Photographer Rachel Sussman has documented 30 of the oldest living things in the world. Beautiful and romantic, her photos document both the adaptation and fragility inherent to surviving for tens of thousands of years.
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.
Where do you find crazy ideas and some of the world's smartest people? In theoretical physics - the world of parallel universes, super strings and black holes. We go on a whirlwind tour of the universe - from the multiverse to an imaginary walk on Mars.
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