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Secrets in our DNA
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NOVA

Secrets in our DNA

Some 30 million Americans have sent their DNA to be analyzed by companies like 23andMe and AncestryDNA. But what happens once the sample is in the hands of testing companies, and how accurate are their results? NOVA explores the power of genetic data to reveal family connections, ancestry, and health risks—and even solve criminal cold cases.

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Full Episodes
Season
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Episode
53:47
NOVA

Looking for Life on Mars

NASA launches its most ambitious search yet for traces of ancient life on Mars.
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Episode
19:13
NOVA

CRISPR Gene-Editing Reality Check

CRISPR gene-editing technology is advancing quickly. What can it do now—and in the future?
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Episode
53:17
NOVA

Beyond the Elements: Life

Discover the fascinating chemistry that makes our world and everything in it—including us.
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Episode
53:17
NOVA

Beyond the Elements: Indestructible

Discover the fascinating chemistry that makes our world and everything in it—including us.
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Episode
53:17
NOVA

Beyond the Elements: Reactions

Discover the fascinating chemistry that makes our world and everything in it—including us.
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Episode
53:31
NOVA

Can We Cool the Planet?

Scientists look to geoengineering and other methods to cool the planet.
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Episode
54:03
NOVA

Touching the Asteroid

Spacecraft OSIRIS-REx attempts to grab a piece of an asteroid to bring it back to Earth.
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Episode
53:31
NOVA

A to Z: How Writing Changed the World

The creation of printing, the first information technology, drove empires and revolutions.
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Episode
54:01
NOVA

A to Z: The First Alphabet

The birth of writing and the first alphabet were among the world’s most vital inventions.
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Episode
53:17
NOVA

Secret Mind of Slime

Meet slime molds: the brainless blobs that can learn, make decisions, and navigate mazes.
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