05:42

Science & Technology

3 bizarre (and delightful) ancient theories about bird migration

Lesson duration 05:42

390,373 Views

02:30

Literature & Language

What happens when you die? A poetic inquiry

Lesson duration 02:30

328,756 Views

04:59

Science & Technology

This thought experiment will help you understand quantum mechanics

Lesson duration 04:59

305,366 Views

14:09

Psychology

Why some people find exercise harder than others - Emily Balcetis

Lesson duration 14:09

535,804 Views

05:38

Design, Engineering & Technology

Building the world's largest (and most controversial) power plant

Lesson duration 05:38

1,063,568 Views

05:36

Thinking & Learning

Can you solve the monster duel riddle?

Lesson duration 05:36

3,621,503 Views

06:28

Science & Technology

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Lesson duration 06:28

692,334 Views

11:45

Literature & Language

10 ways to have a better conversation - Celeste Headlee

Lesson duration 11:45

14,666,025 Views

05:56

Earth and Space Science

The most colorful gemstones on Earth

Lesson duration 05:56

649,591 Views

05:29

Literature & Language

The myth of Loki and the deadly mistletoe

Lesson duration 05:29

2,904,515 Views

06:40

Linguistics

Why the ancient Greeks couldn't see blue

Lesson duration 06:40

8,304,604 Views

04:28

Health

Why is pneumonia so dangerous?

Lesson duration 04:28

2,449,726 Views

04:53

Science & Technology

Which bag should you use?

Lesson duration 04:53

731,254 Views

05:05

Mathematics

Can you solve the Alice in Wonderland riddle?

Lesson duration 05:05

2,194,517 Views

05:16

Thinking & Learning

How fast is the speed of thought?

Lesson duration 05:16

988,548 Views

12:37

Psychology

How we can face the future without fear, together - Rabbi Lord Jonathan Sacks

Lesson duration 12:37

272,878 Views

05:38

Health

Why do you get a fever when you're sick?

Lesson duration 05:38

1,331,323 Views

05:02

Business & Economics

How do investors choose stocks?

Lesson duration 05:02

942,250 Views

05:49

Health

How do steroids affect your muscles— and the rest of your body? - Anees Bahji

Lesson duration 05:49

3,689,203 Views

12:39

Psychology

3 questions to ask yourself about everything you do - Stacey Abrams

Lesson duration 12:39

1,456,070 Views

04:47

Health

Do larger animals take longer to pee?

Lesson duration 04:47

340,644 Views

06:03

Business & Economics

The dark history of bananas

Lesson duration 06:03

2,983,827 Views

05:01

Thinking & Learning

Can you outsmart a troll (by thinking like one)?

Lesson duration 05:01

775,976 Views

05:44

Science & Technology

What if there were 1 trillion more trees?

Lesson duration 05:44

3,804,646 Views