Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Stilts were invented by French shepherds who needed a way to get around in wet marshes.
45
The first household refrigerators cost about $16,000, in today's money!
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In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
13
The New York Stock Exchange started as a coffee shop!
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People spend about two weeks of their lives at traffic lights!
159
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
The streets of Victor, Colorado, once a gold rush town, are paved with low-grade gold.
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