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What is Farthest Away?

What is Farthest Away?

Season 6 Episode 31
6:08
Can We Get Older Without Aging?

Can We Get Older Without Aging?

Season 6 Episode 33
8:53
The Raisin Bran Effect

The Raisin Bran Effect

Season 6 Episode 34
5:19
Does Someone Else Have Your Face?

Does Someone Else Have Your Face?

Season 6 Episode 35
12:42
Do Fish Pee?

Do Fish Pee?

Season 6 Episode 36
4:53
Why Do We Itch (ASL)

Why Do We Itch (ASL)

Season 6 Episode 37
4:59
Why Don't Big Animals Get More Cancer?

Why Don't Big Animals Get More Cancer?

Season 10 Episode 2
9:42
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It's Okay to Be Smart

Where Do Teeth Come From?

Season 6 Episode 28

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.