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

There are more bacteria in your mouth than the human population of the U.S.A. and Canada combined. See more

One quarter of the bones in your body, are in your feet. See more

You're born with 300 bones, but when you get to be an adult, you only have 206. See more

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

Most marine fish can survive in a tank filled with human blood. See more