- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal..
- Blonde beards grow faster than darker beards.
- Penguins are only found in the southern hemisphere primarily in Antarctica (excluding zoos above the equator).
- Half of all crimes are committed by people under the age of 18.
- Elephants can run up to 40kmh (25mph).
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