The average female will have 3.3 pregnancies in her life.
49
There are more bacteria in your mouth than there are people in the world.
60
Fingernails grow nearly 4 times faster than toenails.
31
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
Wearing headphones for an hour increases the bacteria in your ear 700 times.
233