The cigarette lighter was invented before the match.
210
Sony researchers have developed a refrigerator that only opens when you smile.
9
Any modern jet is capable of breaking the sound barrier.
34
More than a billion transistors are manufactured every second.
-25
The electric chair was invented by a dentist!
122
Jumbo jets use 4,000 gallons of fuel to take off.
19
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
