It takes about 20 seconds for a red blood cell to circle the whole body. 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