1:43

Ending the HIV epidemic (sponsored by Gilead)

1:57

How can a single pill treat HIV? (Sponsored by Gilead)

1:49

From waste to worth -- sponsored by P&G

2:58

What is information?

2:26

Where are all the aliens?

2:40

Are we hardwired to believe in God?

2:25

Why do we live in 3D?

2:10

Why machines don't think like humans

2:51

Does infinity exist in the real world?

3:20

Three mysteries of human evolution

2:23

Why space and time have a cryptic connection

2:11

Is your mind normal?

2:23

How analogies shape our thoughts

2:44

How you can change the past

3:08

Three problems computers will never solve

2:31

What if humans had never existed?

2:37

How did the universe arise from nothing?

2:42

What is reality?

2:03

How to create perfect silence

3:06

How your mind can heal your body

2:24

Why mass is mysterious

2:53

How the sun could power 1000 civilizations

2:11

What's inside the quantum box?

2:44

What is a thought made of?

3:14

How to build a time machine

2:33

How many friends can you have?

2:20

When are you dead?

2:59

Is space infinite?

2:12

Why the quantum world is so strange

2:17

Why space is an illusion

2:29

Four discoveries that would change everything

1:50

How chemistry started life on Earth

2:22

If aliens exist, do they know we’re here?

0:31

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