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Can Bones Reveal How Dogs Evolved from Wolves?

Can Bones Reveal How Dogs Evolved from Wolves?

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5:12
Do Dogs Love Us or do They Just Want Treats?

Do Dogs Love Us or do They Just Want Treats?

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3:59
Are Cats More Expressive Than We Think?

Are Cats More Expressive Than We Think?

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2:51
Are Cats As Easy to Train as Dogs?

Are Cats As Easy to Train as Dogs?

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2:19
Can Sleep Quality and Quantity be Boosted Using Sound?

Can Sleep Quality and Quantity be Boosted Using Sound?

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3:03
How Sleep Helps Children Learn and Remember New Words

How Sleep Helps Children Learn and Remember New Words

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4:22
What We Know and Don’t Know about the Coronavirus

What We Know and Don’t Know about the Coronavirus

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5:55
How Coronavirus Tests Work

How Coronavirus Tests Work

Video
6:46
An American Cancer Patient Receives Treatment in Cuba

An American Cancer Patient Receives Treatment in Cuba

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4:51
How the Immune System Fights Cancer

How the Immune System Fights Cancer

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2:49
How Do Sumo Wrestlers Avoid Obesity-Related Diseases?

How Do Sumo Wrestlers Avoid Obesity-Related Diseases?

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2:51
How the Hormone Leptin Helps Regulate Appetite

How the Hormone Leptin Helps Regulate Appetite

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6:48
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NOVA

This Canadian Cave Has Been Frozen Since the Last Ice Age

This cave in Canada remains frozen every summer—and it's been frozen since the last Ice Age 10,000 years ago. What can this tell us about Earth's future climate?