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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?

Video
3:59
Are Cats More Expressive Than We Think?

Are Cats More Expressive Than We Think?

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

Are Cats As Easy to Train as Dogs?

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

Can Sleep Quality and Quantity be Boosted Using Sound?

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

How Sleep Helps Children Learn and Remember New Words

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

What We Know and Don’t Know about the Coronavirus

Video
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

Video
4:51
How the Immune System Fights Cancer

How the Immune System Fights Cancer

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

How Do Sumo Wrestlers Avoid Obesity-Related Diseases?

Video
2:51
How the Hormone Leptin Helps Regulate Appetite

How the Hormone Leptin Helps Regulate Appetite

Video
6:48
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NOVA

What’s Causing Greenland’s Biggest Glacier to Melt?

Jakobshavn is Greenland's biggest glacier. And over the past 20 years, it's receded dramatically. Play NOVA's Polar Lab to learn what's behind that change.