Calculating DNA length for each person, it would stretch across the diameter of the solar system. See more

Crocodiles swallow stones to help them dive deeper. See more

Electricity doesn't move through a wire but through a field around the wire. See more

Cats have over one hundred vocal sounds, dogs only have about ten. See more

Fingernails grow nearly 4 times faster than toenails. See more

Ketchup was sold in the 1830's as medicine. See more

The only 15 letter word that can be spelled without repeating a letter is "uncopyrightable". See more

An average secretary's left hand does 56% of the typing. See more

Human thigh bones are stronger than concrete. See more