Wearing headphones for just one hour will multiply the number of bacteria in your ear 700 times. See more

Wearing headphones for just an hour will increase the bacteria in your ear by 700 times. See more

Average number of people airborne over the US any given hour: 61,000. See more

The word "four" has four letters. In the English language there is no other number whose number of letters is equal to its value. See more

Estimated in 2007, the number of civilian-owned firearms in the US was 88.8 guns per 100 people. See more

Rats multiply so quickly that in 18 months, two rats could have over a million descendants. See more

Sex burns 360 calories per hour See more

The greatest recorded number of children one mother had was 69 children. Do the math! See more

A cat has 32 muscles in each ear. See more

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

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