Season 49
Dinosaur Apocalypse: The Last Day
Scientists use new fossils to reconstruct the day the dinosaurs died.
Dinosaur Apocalypse: The Last Day
Dinosaur Apocalypse: The New Evidence
Striking new fossils paint a picture of life right before the asteroid impact.
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.
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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
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