At YouTube Headquarters, employees can either take the elevator, stairs or slide.
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There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
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There's a swing on the edge of a cliff in Ecuador. It has no safety measures and is called the 'Swing at the End of the World'.
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There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
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Leonardo da Vinci could write with one hand and draw with the other at the same time.
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