To get a song out of your head, try doing something like a puzzle or Sudoku.
13
In many countries, urine was used as a detergent for washing.
17
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
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The average cough comes out of your mouth at 60 miles per hour.
126
Q-Tip Cotton Swabs were originally called Baby Gays.
55
Each day, there are over 120 million sexual intercourse taking place all over the world.
301
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20