Lessons

06:31

Health

One of the most controversial medical procedures in history

Lesson duration 06:31

1,486,544 Views

05:49

Social Studies

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

Lesson duration 05:49

555,619 Views

05:03

Motivation and Emotion

How to be confident

Lesson duration 05:03

3,491,866 Views

12:53

Social Studies

A brief history of the conflict in Israel and Palestine

Lesson duration 12:53

13,558,100 Views

06:40

Linguistics

Why the ancient Greeks couldn't see blue

Lesson duration 06:40

9,810,058 Views

05:14

Design, Engineering & Technology

How An Igloo Keeps You Warm

Lesson duration 05:14

21,608,823 Views

11:38

Science & Technology

Why are we warm-blooded?

Lesson duration 11:38

2,902,309 Views

03:28

Anthropology

Facts about pumpkins you never knew

Lesson duration 03:28

151,679 Views

05:17

Social Studies

What is Día de los Muertos, the Day of the Dead?

Lesson duration 05:17

962,269 Views

07:11

Social Studies

"Other": A brief history of American xenophobia

Lesson duration 07:11

78,745 Views

04:46

Social Studies

Why does February only have 28 days?

Lesson duration 04:46

4,752,837 Views

09:44

Social Studies

Ruby Bridges: The child who defied a mob and desegregated her school

Lesson duration 09:44

545,823 Views

02:19

Social Studies

Why do we celebrate Groundhog Day?

Lesson duration 02:19

3,303,339 Views

09:13

Social Studies

The massacre of Tulsa's "Black Wall Street"

Lesson duration 09:13

4,957,209 Views

05:08

Psychology

Stay in - or leave - a relationship?

Lesson duration 05:08

3,476,985 Views