22:09

Mathematics

The simplest math problem no one can solve

Lesson duration 22:09

43,615,346 Views

15:13

Sex Education

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

Lesson duration 15:13

711,303 Views

05:55

Science & Technology

How we can detect pretty much anything

Lesson duration 05:55

328,054 Views

07:52

Thinking & Learning

Can you outsmart the slippery slope fallacy?

Lesson duration 07:52

1,059,229 Views

05:07

Thinking & Learning

Can you solve the giant spider riddle?

Lesson duration 05:07

3,175,066 Views

05:06

Science & Technology

The method that can "prove" almost anything

Lesson duration 05:06

846,281 Views

05:20

Mathematics

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

Lesson duration 05:20

3,906,425 Views

11:39

Science & Technology

World's only moving mud puddle

Lesson duration 11:39

8,418,799 Views

04:53

Thinking & Learning

Can you cheat death by solving this riddle?

Lesson duration 04:53

5,749,910 Views

05:38

Thinking & Learning

Can you solve the Trojan War riddle?

Lesson duration 05:38

2,774,204 Views

16:08

Psychology

Why rumors about vaccines spread— and how to rebuild trust - Heidi Larson

Lesson duration 16:08

25,594 Views

05:48

Health

Should you donate your DNA to help cure diseases?

Lesson duration 05:48

175,076 Views

05:16

Design, Engineering & Technology

How one design flaw almost toppled a skyscraper

Lesson duration 05:16

892,149 Views

10:41

Speaking

How to have constructive conversations - Julia Dhar

Lesson duration 10:41

327,920 Views

04:58

Health

How long should your naps be?

Lesson duration 04:58

5,551,063 Views

05:42

Thinking & Learning

Can you solve Dongle's Difficult Dilemma?

Lesson duration 05:42

2,247,560 Views

04:59

Design, Engineering & Technology

Why are airplanes slower than they used to be?

Lesson duration 04:59

2,483,751 Views

10:51

Psychology

The counterintuitive way to be more persuasive - Niro Sivanathan

Lesson duration 10:51

181,945 Views

05:48

Thinking & Learning

Can you outsmart the apples and oranges fallacy?

Lesson duration 05:48

1,178,052 Views

05:43

Thinking & Learning

Can you solve the fantasy election riddle?

Lesson duration 05:43

1,741,890 Views

12:23

Social Studies

What it takes to be racially literate - Priya Vulchi and Winona Guo

Lesson duration 12:23

165,987 Views

01:30

Thinking & Learning

How would you finish the sentence, “Imagine if…”?

Lesson duration 01:30

250,474 Views

05:06

Thinking & Learning

Can you solve the demon dance party riddle?

Lesson duration 05:06

1,799,981 Views

04:30

Speaking

We can help you master public speaking

Lesson duration 04:30

404,238 Views