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It's Okay to Be Smart

Are Some Species More Important Than Others?

We explore the universal rules of life that tie together Earth’s living systems. Traveling from Africa’s Serengeti plains to the nearly extinct prairies of the western U.S. to discover the unexpected species that determine the very existence of these places. Can an ecosystem survive without its keystone species? Can we restore endangered human cultures by bringing back a nearly-extinct ecosystem?

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Season
The Impossible Hugeness of Deep Time
9:05
Humans have a hard time with really big numbers, especially when it comes to DEEP TIME.
Is There Life on Earth?
9:44
If we lived light years from Earth, how would we know there’s life here?
Why Do We Itch (ASL)
4:59
We explore how and why itching help!
Do Fish Pee?
4:53
You know you’ve wondered. Do fish actually pee?
Does Someone Else Have Your Face?
12:42
They say everyone has a doppelgänger, but is that really true?
The Raisin Bran Effect
5:19
Where do you see the Brazil Nut Effect around you?
Can We Get Older Without Aging?
8:53
What do other life forms have to teach us about staying alive as we get old?
There Might Be a Dinosaur On Your Dinner Table
10:16
Eating turkey this holiday season? You’re eating a dinosaur!
What is Farthest Away?
6:08
The edge of everything might not even exist…
What Made the 1918 Flu Pandemic So Deadly?
7:41
The 1918 Flu outbreak killed 5% of the world's population--could it happen again?
The Largest River On Earth Is In The Sky
5:30
Scientists have discovered the largest river on Earth, and it’s in the sky above.
Where Do Teeth Come From?
6:40
Teeth are made from some biological nanotechnology that will blow your mind.
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