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It's Okay to Be Smart
Inside the Largest Living Thing On Earth
Season 9
Episode 14
The biggest thing that has ever lived on Earth… is a tree? Hard to believe, but it’s true. Travel with me to the Rocky Mountains of Colorado to go inside the most massive species on our planet, and learn what unique and special evolutionary adaptations let them get so big.
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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.

9:36
Money. We all use it. But is it real?