- Crocodiles never outgrow their enclosure.
- The wristwatch was invented in 1904.
- 75% of the U.S.'s tart cherries come from Michigan.
- Your fingernails grow faster when you are cold.
- The national anthems of Japan, Jordan, and San Marino each have only 4 lines.
- A soap bubble is 10,000 times thinner than the average human hair.
- Tennis was originally played with bare hands.
- A 1/4 of your bones are in your feet.
- The average human drinks over 60,566 litres (16,000 gallons) of water in a lifetime.
- Rainbows can only be seen in the morning or late afternoon (the sun needs to be less than 40 above the horizon).
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