Up Next

How Does Hairspray Work?

How Does Hairspray Work?

How Does Hairspray Work?

Season 3 Episode 9

2:52

How Does Shampoo Work?

How Does Shampoo Work?

How Does Shampoo Work?

Season 3 Episode 10

3:38

What Happens If You Stop Washing Your Hair?

What Happens If You Stop Washing Your Hair?

What Happens If You Stop Washing Your Hair?

Season 3 Episode 11

3:15

Why Does Food Make Your Mouth Water?

Why Does Food Make Your Mouth Water?

Why Does Food Make Your Mouth Water?

Season 3 Episode 12

3:10

The Truth About Peanut Allergies

The Truth About Peanut Allergies

The Truth About Peanut Allergies

Season 3 Episode 13

2:41

Why Are Synthetic Drugs So Dangerous?

Why Are Synthetic Drugs So Dangerous?

Why Are Synthetic Drugs So Dangerous?

Season 3 Episode 14

3:32

Why Do Wasps Attack?

Why Do Wasps Attack?

Why Do Wasps Attack?

Season 3 Episode 15

5:00

Why Does Metal Rust?

Why Does Metal Rust?

Why Does Metal Rust?

Season 3 Episode 16

1:54

How Does Toothpaste Work and Who Are We?

How Does Toothpaste Work and Who Are We?

How Does Toothpaste Work and Who Are We?

Season 3 Episode 17

2:35

What Makes Coffee So Good?

What Makes Coffee So Good?

What Makes Coffee So Good?

Season 3 Episode 18

4:54

Why Is Snake Venom So Deadly?

Why Is Snake Venom So Deadly?

Why Is Snake Venom So Deadly?

Season 3 Episode 19

3:48

What's The Best Way To Whiten Teeth?

What's The Best Way To Whiten Teeth?

What's The Best Way To Whiten Teeth?

Season 3 Episode 20

3:59

Back to Show

Reactions

Why Does Stepping On a Lego Hurt So Bad?

Season 3 Episode 8

This week Reactions explains the science behind the soul-crushing pain of stepping on a Lego. We're talking nociception today folks, and the chemistry of how these little two gram blocks pack enough punch to send you into orbit

Only Available with Passport Starting

Stream on your TV