You will have to walk 80 kilometers for your legs to equal the amount of exercise your eyes get daily. See more

It is impossible for a human to lick their elbow. See more

A teaspoon of neutron star material weighs about 110 million tons. See more

A boeing 747's wingspan is longer than the Wright brothers' first flight (120 feet/36 meters). See more

111,111,111 x 111,111,111 = 12,345,678,987,654,321. See more

You can't kill yourself by holding your breath. See more

Everyone is colourblind at birth. See more

Lightning bolts can sometimes be hotter than the sun (about 50,000 ºF, 27,760 ºC). See more

The magnetic North Pole shifts by about 7 meters a day. See more

Everyone has thirty-two teeth. See more

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

Rubber bands last longer when refrigerated. See more

We lose half a litre of water a day through breathing. See more

The cruise liner, Queen Elizabeth 2nd, burns a gallon of diesel for each 6 inches that it moves. See more

Some large clouds store enough water for 500,000 showers. See more

Peanuts are one of the ingredients of dynamite. See more