When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
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Caffeine boosts memory.
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In the U.S., more than 10% of lottery prizes go unclaimed!
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It has been calculated that every 2 minutes, we take more pictures than all of humanity in the 19th century.
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No piece of square dry paper can be folded more than 7 times in half!
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There are 365 steps on the front of the U.S. Capitol Building - one for every day of the year.
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