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Why Are We The Only Humans Left?

Season 5 Episode 14 | 6m 09s

In part 2 of our special series on human ancestry, we ask why we are the only surviving branch on the human evolutionary tree. Just 50,000-100,000 years ago, Earth was home to three or four separate human species, including our most famous cousins: the Neanderthals. New research has shown that Neanderthals were not the brutish, unintelligent cavemen that cartoons make them out to be.

Aired: 04/24/17
Extras
AI’s environmental impact is more complex than it seems. Who pays the price, and how much?
What if you could turn the same material into a conductor, insulator, or magnet just by twisting it?
Why can hot water sometimes freeze faster than cold water?
How science unraveled one of the biggest myths in modern medicine...HIV's true origins.
I pushed my body in a climate & sports research lab to discover what extreme heat really does to us.
What exactly is the evolutionary purpose of love?
If everything around us is made of atoms, why can’t we actually see them?
This video explores the bizarre mathematics that show how infinity is far stranger than a number.
How Gerardus Mercator later created a map that transformed navigation forever.
DNA solves crimes, but what happens when it sends innocent people to prison?
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AI’s environmental impact is more complex than it seems. Who pays the price, and how much?
What if you could turn the same material into a conductor, insulator, or magnet just by twisting it?
Why can hot water sometimes freeze faster than cold water?
How science unraveled one of the biggest myths in modern medicine...HIV's true origins.
I pushed my body in a climate & sports research lab to discover what extreme heat really does to us.
What exactly is the evolutionary purpose of love?
If everything around us is made of atoms, why can’t we actually see them?
This video explores the bizarre mathematics that show how infinity is far stranger than a number.
How Gerardus Mercator later created a map that transformed navigation forever.
DNA solves crimes, but what happens when it sends innocent people to prison?