- The ideal temperature to fall asleep is between 18-30c (64-86f).
- Avocados have the most calories of any other fruit.
- In the U.S., there is an official rock, paper, scissors league.
- Ancient Egyptians used geometry principles as far back as 3000 BC, using equations to approximate the area of circles among other formulas.
- Horses sleep standing up.
- Giraffes and rats can last longer without water than camels.
- A Chinese checkerboard has 121 holes.
- Hippopotamuses have killed more people in Africa than any other animal.
- When a member of a whale group is sick or injured, other whales will push it up to the surface of the water to help it breathe.
- Twins have a very high occurrence of left-handedness.
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