05:12

Design, Engineering & Technology

Blood, concrete, and dynamite: Building the Hoover Dam

Lesson duration 05:12

1,023,757 Views

05:14

Social Studies

The dark history of Mount Rushmore

Lesson duration 05:14

829,504 Views

05:05

Social Studies

How one of the most profitable companies in history rose to power

Lesson duration 05:05

888,803 Views

05:52

Psychology

Can stereotypes ever be good?

Lesson duration 05:52

652,317 Views

04:34

Science & Technology

Why do your jeans wear out so quickly?

Lesson duration 04:34

365,413 Views

02:49

Social Studies

Abraham Lincoln's Gettysburg Address

Lesson duration 02:49

2,487,731 Views

08:15

Social Studies

Why the US Army tried to exterminate the bison

Lesson duration 08:15

1,660,289 Views

09:44

Social Studies

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

Lesson duration 09:44

492,004 Views

04:57

Literature & Language

The twins who tricked the Maya gods of death

Lesson duration 04:57

2,045,602 Views

05:25

Literature & Language

The Norse myth that inspired “The Lord of the Rings”

Lesson duration 05:25

3,072,713 Views

06:40

Science & Technology

The human back is a design disaster

Lesson duration 06:40

1,625,542 Views

04:47

Social Studies

Why are scientists obsessed with the Black Sea?

Lesson duration 04:47

471,903 Views

04:35

Social Studies

What happened to the lost Kingdom of Kush?

Lesson duration 04:35

1,054,479 Views

05:26

Literature & Language

The surprising origins of the word “lesbian”

Lesson duration 05:26

774,511 Views

04:32

Social Studies

The forgotten queen of Egypt

Lesson duration 04:32

1,247,415 Views

05:18

The Arts

The secrets of the world’s most famous symphony

Lesson duration 05:18

1,767,543 Views

22:09

Mathematics

The simplest math problem no one can solve

Lesson duration 22:09

43,643,344 Views

04:57

Linguistics

What makes a language... a language?

Lesson duration 04:57

807,454 Views

05:52

History

The rise and fall of the Lakota Empire

Lesson duration 05:52

617,806 Views

04:48

Social Studies

The infamous overpopulation bet: Simon vs. Ehrlich

Lesson duration 04:48

589,706 Views

11:38

Science & Technology

Why are we warm-blooded?

Lesson duration 11:38

2,447,657 Views

05:27

Science & Technology

Is this the most successful animal ever?

Lesson duration 05:27

520,720 Views

05:29

Social Studies

The secret society of the Great Dismal Swamp

Lesson duration 05:29

313,120 Views

05:12

History

The rise and fall of the Kingdom of Man

Lesson duration 05:12

1,188,745 Views