- Britain was the first country to use postage stamps.
- A suction cup will not work in outer space.
- The Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, ....
- 'Bookkeeper' and 'bookkeeping' are the only 2 words in the English language with three consecutive double letters.
- Sir Isaac Newton was 23 when he discovered the law of gravity.
- The dishwasher was invented in 1889.
- Giraffes can't cough.
- You can't tickle yourself.
- Earth's sky is purple, our eyes just see it as blue.
- Maine produces more toothpicks than any other state in the U.S.
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