Castor oil is used as a lubricant in jet planes.
-5
Any modern jet is capable of breaking the sound barrier.
34
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
The ball on top of a flagpole is called a 'truck'.
24
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
There are only 14 blimps in the world.
69