The ball on top of a flagpole is called a 'truck'.
24
A small airplane can fly backwards.
75
Originally, Nintendo was a playing card manufacturer.
70
Castor oil is used as a lubricant in jet planes.
-5
Future biotechnology could be used to trick a prisoner's mind into thinking they have served a 1,000 year sentence in only eight hours, a group of scientists have claimed.
0
The first alarm clock could only ring at 4 a.m.
120
Whale oil was used in automobile transmissions as late as 1973.
56