- 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.
- Recycling one glass jar saves enough energy to watch TV for 3 hours.
- The ideal temperature to fall asleep is between 18-30c (64-86f).
- There is no proof as to who built the Taj Mahal.
- Triscadecaphobia is the fear of the number 13.
- Tennis was originally played with bare hands.
- Iceland consumes more Coca Cola than any other country.
- The meaning of 'Blue Chip' comes from blue casino chips which have a high value.
- Cats have over 100 vocal chords.
- 32% of all land in the U.S. is owned by the government.
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