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

About 70 percent of your body weight is water. See more

If you have a car remote and you step out of its range, point it to your head and it will work again! See more

Leonardo Da Vinci invented the scissors. See more

We know more about the surface of the moon than we do about the bottom of the ocean. See more

The electric chair was invented by a dentist. See more

10% of human dry weight comes from bacteria. See more

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

Zero point energy is a source of energy which is released when atoms stop moving, at -273 Celcius. See more