Most dust particles in a US house are made from dead skin. See more

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

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

The 'save' icon on Microsoft Word shows a floppy disk, with the shutter on backwards. See more

A day on the planet Mercury is twice as long as its year. See more

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

Intelligent people have more zinc and copper in their hair. See more

The right lung is slightly larger than the left. See more

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

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

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

Plants that are not cared for will cry for help, a thirsty plant will make a high-pitched sound that is too high for us to hear. See more

The heart beats about 100,000 times each day. See more

Leonardo Da Vinci invented the scissors. See more