It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
A small airplane can fly backwards.
75
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Energy is being wasted if a toaster is left plugged in after use.
21
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
More than a billion transistors are manufactured every second.
-25
The cigarette lighter was invented before the match.
210
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43