The first household refrigerators cost about $16,000, in today's money!
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It has been calculated that every 2 minutes, we take more pictures than all of humanity in the 19th century.
13
If you took a standard slinky and stretched it out it would measure 87 feet.
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Daydreamers are better at solving complex problems.
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It is estimated that millions of trees in the world are accidentally planted by squirrels who bury nuts and then forget where they hid them!
174
There are more telephones than people in Washington, D.C.
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Passengers on the Beijing subway can pay with plastic bottles.
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