In many countries, urine was used as a detergent for washing.
17
New York's Central Park is nearly twice the size of the entire country of Monaco.
42
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
Any domino can knock over another object up to 1.5x its size. The 32nd object would be big enough to knock over the Empire State Building.
18
If you counted 24 hours a day, it would take 31,688 years to reach one trillion!
44
Cash machines are as dirty as public toilets.
175
The number of births that occur in India each year is higher than the entire population of Australia.
66