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

The most common name in the world is Mohammed. See more

When baby sharks are born, they swim away from their mothers right away and are on there own. In fact, their mothers might see them as prey. See more

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

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

If a surgeon in Ancient Egypt lost a patient while performing an operation, his hands were cut off. See more

Women blink nearly twice as much as men. See more

A rat can fall from a five story building without injury. 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