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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?

Video
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

Video
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
How the Immune System Fights Cancer

How the Immune System Fights Cancer

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2:49
An American Cancer Patient Receives Treatment in Cuba

An American Cancer Patient Receives Treatment in Cuba

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4:51
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

How Humans Could Make Icehouse Earth into a Hothouse

Earth's climate has slowly fluctuated between cold and hot periods for millions of years. Today, humans are greatly accelerating that process.