- You can only see a rainbow if you have your back to the sun.
- The middle finger has the fastest growing nail.
- Elephants are capable of swimming 20 miles a day.
- Every square inch of the human body has an average of 32 million bacteria on it.
- Human thigh bones are stronger than concrete.
- Bees can see ultraviolet light.
- That you can spell the word 'level' the same backwards.
- A baby fetus develops fingerprints at eighteen weeks.
- 99% of our solar system's mass is the sun.
- The oldest word in the English language is 'town'.
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