- The cheetah is the only cat that can't retract it's claws.
- Swiss mathematician Leonhard Euler was probably the most influential mathematician of the 18th century, making discoveries in graph theory and introducing many modern mathematical words and notations among other things..
- Paper money was first used in China.
- The sixth sick sheik's sixth sheep's sick' is said to be the toughest tongue twister.
- The fortune cookie was invented in San Francisco.
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