In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
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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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All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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The longest Monopoly game in history lasted 70 straight days.
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You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
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