- Greek philosopher and mathematician Pythagoras lived around the year 500 BC and is known for his Pythagorean theorem relating to the three sides of a right angle triangle: a^2 + b^2 = c^2.
- A person produces enough saliva to fill 2 average size swimming pools during their lifetime.
- The primary reason for growing rice in flooded paddies is to drown the weeds surrounding the young seedlings (rice can grow in well drained areas).
- Chalk is made from tiny plankton fossils.
- The fortune cookie was invented in San Francisco.
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