There are no clocks in Las Vegas casinos. See more

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning before you will die of oxygen deprivation. See more

A 'jiffy' is an actual unit of time for 1/100th of a second. See more

Only one person in two billion will live to be 116 or older. See more

It is possible to lead a cow upstairs but not downstairs. See more

Hawaiian alphabet has 12 letters. See more

28% of Africa is wilderness. See more

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

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