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Antiques Roadshow

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Finding Your Roots

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Artbound

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NOVA

The Elegant Universe: Part 3

Brian Greene shows how Edward Witten of Princeton's Institute for Advanced Study, aided by others, revolutionized string theory by successfully uniting the five different versions into a single theory that is cryptically named "M-theory," a development that requires a total of eleven dimensions.

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Full Episodes
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
1:33:06
NOVA

Picture a Scientist

Researchers expose longstanding discrimination against women in science.
Vfrwdjt-asset-mezzanine-16x9-AUrgyH5.jpg
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
53:26
NOVA

Secrets in our DNA

What can DNA testing companies reveal about our ancestry and health, and at what risk?
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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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