Up Next
Back to Show
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.
Support Provided By
7:35
Stay informed. Stay cautious, but not scared.
12:19
Do the supposed advantages for springing forward and falling back hold up?
8:23
The sunlight we see is tens of thousands of years old. How is that possible?
8:19
If humans are so smart, why are our babies so… un-smart?
6:28
How will we do a Green Revolution 2.0?
10:44
Can trees really save us from climate change?
9:43
Could You Be a Chimera?
11:30
I went to NASA in Houston to talk to astronaut Don Pettit.
7:20
Why is ice slippery? It's a more complicated answer than it seems!
11:11
Recycling is broken. Here's how we can fix it.
14:55
People say insects are the food of the future.
11:53
Here’s a rundown of a few of the human body’s biggest evolutionary fails!