Back to Show
It's Okay to Be Smart
How Many Smells Can You Smell?
Season 3
Episode 12
We walk through life led by our noses. Literally. Because they’re on the front of our faces. How does the sense of smell work, and how sensitive are our noses? Why are smell-related memories so vivid? How many different smells could we possibly smell?
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

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!

13:11
Meet your cousin: Homo naledi.

8:51
Why are trees and other plants green? The answer is full of surprises.

8:46
How do we see color in the first place?

11:20
Earth’s climate is changing in a big way.