It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Castor oil is used as a lubricant in jet planes.
-5
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7
The first alarm clock could only ring at 4 a.m.
120
Any modern jet is capable of breaking the sound barrier.
34
More than a billion transistors are manufactured every second.
-25
