2. Talk About Crowded

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How about this one? Atoms, which are one of the tiny building building blocks that make up all matter, contain about 99.9999999999999 percent nothing. There’s lots of empty space in an atom. That being the case, the matter that makes up the entire human race – with all the empty space removed – could fit into a teaspoon. It would weigh about 5 billion tons, which we seriously believe no teaspoon could actually support, but it would make for one hell of a boat anchor!