It's impossible to kill yourself by holding your breath.
703
Stilts were invented by French shepherds who needed a way to get around in wet marshes.
45
You can start a fire with ice.
367
The key to happiness is spending your money on experiences rather than possessions, according to studies.
21
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
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
It is estimated that millions of trees in the world are accidentally planted by squirrels who bury nuts and then forget where they hid them!
174
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22