- Horses sleep standing up.
- The ideal temperature to fall asleep is between 18-30c (64-86f).
- Most cows produce more milk when they listen to music.
- Elephants communicate in sound waves below the frequency that humans can hear.
- Diet Coke was introduced in 1982.
- There are 2,598,960 possible hands in a 5 card poker game.
- The fortune cookie was invented in San Francisco.
- A group of frogs is called an army.
- Babylonians measured the circumference of a circle as approximately 3 times the diameter, which is fairly close to today's measurement which uses the value of Pi (around 3.14).
- The average human brain contains around 78% water.
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