The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
In the early 1960's, Porsche commercially manufactured farm tractors.
24
Attics were invented in Attica.
43
UFO sightings have reduced by over 80% since the introduction of smartphones and public access to HD video.
2
More than a billion transistors are manufactured every second.
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