The key to happiness is spending your money on experiences rather than possessions, according to studies.
21
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
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In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
Tsunamis ( tidal waves ) travel as fast as jet planes.
97
The first household refrigerators cost about $16,000, in today's money!
47
In many countries, urine was used as a detergent for washing.
17
During his or her lifetime, the average human will grow 590 miles of hair.
69
You share your birthday with at least 9 million other people in the world.
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