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 first alarm clock could only ring at 4 a.m.
120
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Originally, Nintendo was a playing card manufacturer.
70
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
There are only 14 blimps in the world.
69
More than a billion transistors are manufactured every second.
-25
Energy is being wasted if a toaster is left plugged in after use.
21