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<Ten things you don't know about the Earth ⁄ >




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Good advice from the 70s progressive band. Look around you. Unless you're one of the Apollo astronauts, you've lived your entire life within a few hundred kilometers of the surface of the Earth. There's a whole planet beneath your feet, 6.6 sextillion tons of it, one trillion cubic kilometers of it. But how well do you know it?

Below are ten facts about the Earth - the second in my series of Ten Things You Don't Know (the first was on the Milky Way). Some things I already knew (and probably you do, too), some I had ideas about and had to do some research to check, and others I totally made up. Wait! No! Kidding. They're all real. But how many of them do you know? Be honest.



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