- Human eyes have over two million working parts.
- Cabbage is 91% water.
- Earth is the only known planet where fire occurs.
- Sound travels 15 times faster through steel than air.
- The odds of being struck by lightning are 600,000 to 1.
- The word 'underground is the only word that begins and ends with the letters 'und'.
- Cows do not have upper front teeth.
- Your fingernails grow faster when you are cold.
- 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.
- Toe wrestling is a competitive sport.
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