A small airplane can fly backwards.
75
The cigarette lighter was invented before the match.
210
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
Originally, BMW was an airplane engine manufacturer.
69
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
Jumbo jets use 4,000 gallons of fuel to take off.
19
The first alarm clock could only ring at 4 a.m.
120