An adult human heart weighs about 10 ounces and beats over 100,000 times a day See more

The blue whale has a heart the size of a small car and its blood vessal is so broad, that a person could swim through it. See more

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

The cockroach has a high resistance to radiation and is the creature most likely to survive a nuclear war. See more

An ant can survive for up to two days underwater. See more

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

It takes about 20 seconds for a red blood cell to circle the whole body. See more

Human thigh bones are stronger than concrete. See more