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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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Season
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Episode
20:37
NOVA

Search Engine Breakdown

Two leading researchers investigate racial bias built into widely used search engines.
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Episode
53:06
NOVA

Fighting for Fertility

Meet people struggling with infertility and the challenges of assisted reproduction.
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Episode
53:21
NOVA

Reef Rescue

Scientists race to help corals adapt to warming oceans through assisted evolution.
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Episode
1:33:06
NOVA

Picture a Scientist

Researchers expose longstanding discrimination against women in science.
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Episode
53:46
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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