Castor oil is used as a lubricant in jet planes.
-5
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
The average car produces a pound of pollution every 25 miles!
18
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The first alarm clock could only ring at 4 a.m.
120
A small airplane can fly backwards.
75
Sony researchers have developed a refrigerator that only opens when you smile.
9
Originally, Nintendo was a playing card manufacturer.
70