- The first credit card was a Diner's Club card issued in 1950.
- The alchemy symbol for water is an inverted triangle, resembling a cup or glass.
- In American supermarkets peanut butter is one of the most frequently purchased items.
- 45% of Americans don't know that the sun is a star.
- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- The US flag has 13 stripes (representing the original 13 states).
- Hippophobia is the fear of horses.
- Fresh apples float because 25 percent of their volume is air.
- Rain contains vitamin B12.
- The Hawaiian alphabet has only 12 letters.
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