Those stars and colours you see when you rub your eyes are called phosphenes. See more

The human heart creates enough pressure when it pumps, to squirt out blood 30 feet high. See more

February 1865 is the only month in recorded history not to have a full moon. See more

Banging your head against a wall uses 150 calories an hour. See more

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

A cat's urine glows under a black light. See more

A single individual, Dr. Lieven P. Van Neste, owns over 200,000 domain names! See more

You use over 70 muscles to say one word. See more

The thumbnail grows the slowest; the middle nail grows the fastest. See more