Hydrogen is an explosive gas. Oxygen supports combustion. Yet when these are combined it is water which is used to put out fires. See more

Fish that live more than 800 meters below the ocean surface don't have eyes. See more

Males, on average, think about sex every 7 seconds. See more

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

The "sixth sick sheik's sixth sheep's sick" is said to be the toughest tongue twister in the English language. See more

More than 50% of the people in the world have never made or received a telephone call. See more

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

"I am." is the shortest complete sentence in the English language. See more

28% of Africa is wilderness. See more