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Okay, time to zoom in on humankind's first big technological

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innovation. Drumroll please! Walking, seriously walking? All right fine, walking [Caveman walks in and modern human is driving a Segway]

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woohoo. Well this thrilling lesson is the story of how people move before they had

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any help no wheels no horses not even a cheap Kmart bike that falls apart in two [Caveman in a cart, the horse and wheels vanish and it falls to the ground]

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minutes. Even without the benefit of any transportation technology good old human

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beings still managed to get around we settled every habitable part of the

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planet from the Tropics to the far North so how did Stone Age humans cover

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thousands of miles and settle the entire planet with nary a pair of sneakers? Well [Cities appearing all over a map of the world]

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they just kind of had to, it was basically walk or die. Remember early

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hunter-gatherers didn't get to hang around in their boxers and microwave

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mammoth for lunch. They were constantly on the move these days human beings

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mostly avoid walking, seriously if it's farther than a city block we call Uber. [Boy sat on a couch on his phone]

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But at the beginning of human history walking was literally the only way to

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get anywhere animals weren't domesticated yet, wheels hadn't been

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invented, but early humans were hunters and gatherers which meant that they

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couldn't just hang out and wait for their wheat to grow or hogwarts acceptance letter

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to show up. They had to go out and find their food or else risk a growling

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stomach and ya know, what's that called? Oh yeah dying. In East Africa where our [Caveman''s stomach grumbles and he falls over]

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species began, people had to go a long long way to find their food. There's a whole

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theory about Stone Age hunting called the endurance running hypothesis and it

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basically says that our ancient ancestors would have put us to shame on

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the elliptical. Anthropologists and archaeologists both believe that early

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humans hunted their prey by literally running it to death over a few dozen [Caveman chasing after animal]

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miles so let's imagine we're happy little cave people, we see a hamburger on

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legs in the distance like a gazelle or an antelope. We don't have any projectile

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weapons.. yet, and the Gazelle is way faster than us in a sprint so what's our

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advantage? We sweat. Oh yeah it's a gross advantage but it's a big advantage.

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Human beings are really good at getting rid of excess

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heat so we can run for long distances without overheating and erm, dying. Those [Man on a treadmill sweating]

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other animals can't say the same. Pit stains, humanity's great evolutionary hope.

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But there was a whole task force of cave people working on primitive deodorant. [Scientist spraying deodorant on caveman]

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