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This Device Smells Diseases by Imitating a Dog's Nose
By studying dog noses, scientists at MIT are building an electronic nose that is learning to analyze odors to sniff out diseases. Could this tech someday be integrated into smartphones?
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53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.

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53:32
Meet one of the ocean’s most beautiful and destructive species: Lionfish.

53:47
Psychedelics are unlocking new ways to treat conditions like addiction and depression.

53:30
Is artificial intelligence making policing and courts fairer, or is it increasing bias?

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53:43
A team tackles the restoration of iconic Notre Dame Cathedral.

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53:31
Can innovative engineering projects save Venice?

53:33
Can innovative drugs and therapies finally end HIV?

53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.

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53:20
How could a single ship cause a major supply chain crisis around the globe?

53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.

53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate

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Explore great ancient Maya cities and why their inhabitants abandoned them.