A small airplane can fly backwards.
75
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
The ball on top of a flagpole is called a 'truck'.
24
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 life boat was patented in 1845!
29
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12


