- 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.
- Clouds fly higher during the day than the night.
- John Cadbury founded the Cadbury chocolate company in England in 1842 producing the first chocolate bars.
- The first crossword puzzle appeared in 1913.
- The Nobel Peace Prize is named for Alfred Nobel, the inventor of dynamite.
- Adult humans are the only mammal that can't breathe and swallow at the same time.
- The number of times a cricket chirps in 15 seconds, plus 37, will give you the current air temperature.
- A group of rhinos is called a crash.
- Wine is sold in tinted bottles because it spoils when exposed to light.
- Chinese mathematics developed around the 11th century BC and included important concepts related to negative numbers, decimals, algebra and geometry.
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