Up Next
Back to Show
It's Okay to Be Smart
Why is the sky any color?
Season 1
Episode 4
Why is the sky blue? It's a question that you'd think kids have been asking for thousands of years, but it might not be that old at all. The ancient Greek poet Homer never used a word for blue in The Odyssey or The Iliad, because blue is one of the last colors that cultures pick out a word for.
Support Provided By
16:47
If everything around us is made of atoms, why can’t we actually see them?
10:51
This video explores the bizarre mathematics that show how infinity is far stranger than a number.
24:25
How Gerardus Mercator later created a map that transformed navigation forever.
22:37
DNA solves crimes, but what happens when it sends innocent people to prison?
14:52
How thousands of tiny brains, obeying simple rules, solve problems no individual can understand.
19:50
Joe visits a flavor lab to uncover how our senses shape our taste.
22:36
How did the mass extinction of the dinosaurs play out, moment by moment?
12:37
Think traits like eye color or tongue-rolling are simple genetics? Think again.
11:08
Why is the Martian sky red by day… but blue at sunset?
