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It's Okay to Be Smart
Why Do We Have to Sleep
Season 3
Episode 48
Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here’s a look at how sleep works, why we’re not getting enough sleep, what happens if you DON’T sleep, and an idea about where sleep came from in the first place.
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19:29
We explore all the questions that teach us what's possible in evolution!

22:36
Let's find out exactly what is it!

20:26
Let’s journey from Einstein’s thought experiments about relativity to answer it.

14:49
We use lots and lots of mousetraps and ping-pong balls to show how this works.

16:43
Explore why we lie if we’re supposed to be the most socially developed species on Earth?

5:42
Glass is made of sand, which is a kind of rock. But glass is transparent. We explore why!

11:20
This is how to make a COVID-19 vaccine.

8:01
Do you know the true story of how his famous experiment changed the world?

15:14
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8:07
Geckos can grip and climb almost anything almost like they can defy gravity but how?

11:38
The world is going to end and scientists are certain all of this will happen.

12:19
The fastest animal in nature isn't what you think it is. It's way, way smaller than that.