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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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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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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

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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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How the Hormone Leptin Helps Regulate Appetite

How the Hormone Leptin Helps Regulate Appetite

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NOVA

How Earth’s Climate Changed Over the Past 500 Million Years

Over its history, Earth has fluctuated between two climate states: Icehouses, with ice caps at at least one of the poles, and Hothouses, when there is no ice at the poles.