The first alarm clock could only ring at 4 a.m.
120
Car airbags kill 1 person for every 22 lives that they save.
80
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Any modern jet is capable of breaking the sound barrier.
34
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4