- Diamonds are the hardest substance known to man.
- All the planets in our solar system could fit inside Jupiter.
- Some playing cards in India are round.
- Recycling one glass jar saves enough energy to watch TV for 3 hours.
- The first place in the world to allow women to vote New Zealand.
- The 50-star flag was designed for a high school class assignment.
- 2 out of 5 people marry their first love.
- Commercial airplanes maintain a cabin pressure of about 6,400 feet (just over 1 mile) above sea level.
- 40% of Amsterdam commuters get to work by bicycle.
- Air's alchemy symbol is a triangle with a horizontal bar.
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