Tigers can see 6 times better at night than humans.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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Sony researchers have developed a refrigerator that only opens when you smile.
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The Aztecs were the first to serve chocolate as a drink. They also mixed it with hot chili pepper to make it really 'hot'.
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There are about 255 babies born worldwide every minute.
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