Season 49
What exactly is crypto, and how does it work? This technology is more than just money.
Crypto Decoded
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
Nazca Desert Mystery
Meet one of the ocean’s most beautiful and destructive species: Lionfish.
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Ocean Invaders
Psychedelics are unlocking new ways to treat conditions like addiction and depression.
Can Psychedelics Cure?
Is artificial intelligence making policing and courts fairer, or is it increasing bias?
Computers v. Crime
Discover how NASA engineers built and launched the most ambitious telescope of all time.
Ultimate Space Telescope
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
Ice Age Footprints
Dinosaur Apocalypse: The Last Day
Scientists use new fossils to reconstruct the day the dinosaurs died.
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Dinosaur Apocalypse: The Last Day
Dinosaur Apocalypse: The New Evidence
Striking new fossils paint a picture of life right before the asteroid impact.
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Dinosaur Apocalypse: The New Evidence
Determined: Fighting Alzheimer's
Follow three women enrolled in a new study to try to prevent Alzheimer’s.
Determined: Fighting Alzheimer's
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
Great Mammoth Mystery
Join biologists on an ingenious hunt for the clues hidden in animal poop.
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Secrets in the Scat
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate