04:54

Health

This is the most common way to get head lice

Lesson duration 04:54

209,718 Views

10:03

Health

Why daylight is the secret to great sleep - Christine Blume

Lesson duration 10:03

88,087 Views

10:03

Health

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Lesson duration 10:03

155,058 Views

05:20

Psychology

Can you "see" images in your mind? Some people can't

Lesson duration 05:20

1,128,495 Views

10:07

Health

Should we get rid of pregnancy? | Ada, Ep. 3

Lesson duration 10:07

225,015 Views

10:48

Health

Would you sell your kidney for $100,000? | Ada, Ep. 2

Lesson duration 10:48

213,348 Views

05:00

Psychology

Why you feel stuck — and how to get motivated

Lesson duration 05:00

731,499 Views

06:48

Health

What actually causes high cholesterol?

Lesson duration 06:48

998,667 Views

05:52

Social Studies

The history of the world according to rats

Lesson duration 05:52

357,542 Views

06:31

Health

One of the most controversial medical procedures in history

Lesson duration 06:31

698,663 Views

05:26

Health

Do you really need to take 10,000 steps a day?

Lesson duration 05:26

6,381,667 Views

04:59

Psychology

How some friendships last — and others don’t

Lesson duration 04:59

972,600 Views

05:18

Health

How does kidney transplant surgery work?

Lesson duration 05:18

263,439 Views

06:35

Health

The real reason polio is so dangerous

Lesson duration 06:35

598,164 Views

06:06

Science & Technology

How do heat waves affect your body?

Lesson duration 06:06

662,645 Views

05:20

Health

3 reasons why medications are so expensive in the US

Lesson duration 05:20

206,408 Views

05:37

Science & Technology

This mushroom will kill you before you know what’s happening

Lesson duration 05:37

889,195 Views

05:49

Social Studies

What is hysteria, and why were so many women diagnosed with it?

Lesson duration 05:49

446,463 Views

05:33

Health

What’s the best way to treat the common cold?

Lesson duration 05:33

1,029,531 Views

12:24

Health

11 things that can change your eye color

Lesson duration 12:24

760,569 Views

04:48

Design, Engineering & Technology

The thing in your kitchen most likely to kill you

Lesson duration 04:48

277,097 Views

05:28

Science & Technology

How do animals regrow their limbs? And why can't humans do it?

Lesson duration 05:28

538,863 Views

05:38

Health

What does appendix pain feel like?

Lesson duration 05:38

1,251,499 Views

04:47

Health

Why is it so dangerous to step on a rusty nail?

Lesson duration 04:47

5,480,635 Views