The first household refrigerators cost about $16,000, in today's money!
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There are 2,500,000 rivets in the Eiffel Tower.
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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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The full moon causes a tidal wave to roll up the Amazon river once in day and once in night for a period of only three weeks in a year. This results in continuous 4m high wave that can be surfed for up to 13km.
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NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
A typical lead pencil can draw a line that is 35 miles long.
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Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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