The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
UFO sightings have reduced by over 80% since the introduction of smartphones and public access to HD video.
2
The first alarm clock could only ring at 4 a.m.
120
Castor oil is used as a lubricant in jet planes.
-5
The ball on top of a flagpole is called a 'truck'.
24
Whale oil was used in automobile transmissions as late as 1973.
56