The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
Kleenex tissues were originally used as filters in gas masks.
46
Whale oil was used in automobile transmissions as late as 1973.
56
UFO sightings have reduced by over 80% since the introduction of smartphones and public access to HD video.
2
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
