- The Hawaiian alphabet has 13 letters.
- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- Fresh apples float because they contain 25% air.
- The longest time a person has been in a coma is 37 years.
- If you filled a matchbox with gold it could be flattened into a sheet the size of a tennis court.
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