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Description:
How much does the cold affect us?
Our species has tropical origins, because humans evolved in Africa's heat. Eventually, we began spreading to colder climates over two million years ago. Yet, even after all that time, we still need a lot of help to survive where it's very cold. Fortunately, we have created technology that keeps us warm even where it's extremely cold. But that doesn't mean gloves and jackets can protect us from every icy environment.
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Video length: 06:05
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