Leonardo Da Vinci invented the scissors. See more

The average person falls asleep in seven minutes. See more

Mexico City sinks about 10 inches a year. See more

All the chemicals in the human body have a combined value of approximately £4.00. See more

Hydrogen is an explosive gas. Oxygen supports combustion. Yet when these are combined it is water which is used to put out fires. See more

More than 50% of the people in the world have never made or received a telephone call. See more

Wearing headphones for just one hour will multiply the number of bacteria in your ear 700 times. See more

A 'jiffy' is an actual unit of time for 1/100th of a second. See more

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning before you will die of oxygen deprivation. See more