An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Attics were invented in Attica.
43
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
The electric chair was invented by a dentist!
122
Any modern jet is capable of breaking the sound barrier.
34
More than a billion transistors are manufactured every second.
-25