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Be Smart

Where Do Teeth Come From?

Season 6 Episode 28 | 6m 40s

Teeth. We’ve all got ‘em (most of us, anyway). But how do they grow? Teeth are made from some biological nanotechnology that will blow your mind. They are strong enough to last hundreds of millions of years. Oh, and if you’ve ever wondered how adult teeth replace your baby teeth, get ready to see something terrifying.

Aired: 10/08/18
Extras
Watch • 16:20
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Why do we have different blood types? And why do we have blood at all?
Episode: S13 E8 | 16:20
Watch • 16:18
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How did dinosaurs become birds—and what good is half a wing?
Episode: S13 E7 | 16:18
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Watch • 16:20
Be Smart
Blood Types Are Weirder Than You Think
Why do we have different blood types? And why do we have blood at all?
Episode: S13 E8 | 16:20
Watch • 16:18
Be Smart
How Feathered Dinosaurs Accidentally Invented Flight
How did dinosaurs become birds—and what good is half a wing?
Episode: S13 E7 | 16:18