05:24

Social Studies

The 4 greatest threats to the survival of humanity

Lesson duration 05:24

504,280 Views

06:17

Thinking & Learning

Can you outsmart the college admissions fallacy?

Lesson duration 06:17

856,829 Views

05:23

Mathematics

Can you solve the fortress riddle?

Lesson duration 05:23

1,410,291 Views

09:17

Thinking & Learning

Give yourself permission to be creative - Ethan Hawke

Lesson duration 09:17

3,026,142 Views

06:17

Mathematics

Can you solve the private eye riddle?

Lesson duration 06:17

1,509,412 Views

04:47

Philosophy

Ethical dilemma: Who should you believe?

Lesson duration 04:47

906,221 Views

05:34

Mathematics

A riddle of ice and fire dragons

Lesson duration 05:34

1,307,486 Views

06:24

Thinking & Learning

Can you solve the Big Bang riddle?

Lesson duration 06:24

1,269,411 Views

04:48

Mathematics

Can you solve the birthday cake riddle?

Lesson duration 04:48

1,816,724 Views

05:27

Literature & Language

The tragic myth of the Sun God's son

Lesson duration 05:27

2,153,538 Views

04:46

Business & Economics

Why is it so hard to escape poverty?

Lesson duration 04:46

5,390,185 Views

04:26

Philosophy & Religion

You can only save one— who do you choose?

Lesson duration 04:26

2,292,194 Views

05:19

Design, Engineering & Technology

Yes, scientists are actually building an elevator to space

Lesson duration 05:19

807,435 Views

05:29

Mathematics

Can you solve the human cannonball riddle?

Lesson duration 05:29

946,090 Views

05:14

Science & Technology

How to get better at video games, according to babies

Lesson duration 05:14

553,664 Views

05:54

Thinking & Learning

Can you solve the computer virus riddle?

Lesson duration 05:54

1,275,738 Views

06:19

Mathematics

Can you solve the rogue submarine riddle? Difficulty level: Master

Lesson duration 06:19

1,527,046 Views

22:09

Mathematics

The simplest math problem no one can solve

Lesson duration 22:09

42,418,173 Views

15:13

Sex Education

How porn changes the way teens think about sex - Emily F. Rothman

Lesson duration 15:13

688,671 Views

05:55

Science & Technology

How we can detect pretty much anything

Lesson duration 05:55

325,858 Views

07:52

Thinking & Learning

Can you outsmart the slippery slope fallacy?

Lesson duration 07:52

1,004,668 Views

05:07

Thinking & Learning

Can you solve the giant spider riddle?

Lesson duration 05:07

3,109,035 Views

05:06

Science & Technology

The method that can "prove" almost anything

Lesson duration 05:06

836,354 Views

05:20

Mathematics

The paradox at the heart of mathematics: Gödel's Incompleteness Theorem

Lesson duration 05:20

3,833,752 Views