The cigarette lighter was invented before the match.
210
Any modern jet is capable of breaking the sound barrier.
34
Castor oil is used as a lubricant in jet planes.
-5
The life boat was patented in 1845!
29
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12


