Sony researchers have developed a refrigerator that only opens when you smile.
9
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Kissenger is a pig-shaped robotic device that lets you kiss someone over the internet.
5
A small airplane can fly backwards.
75
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Super Nintendo and Sega Genesis had an online multiplayer mode.
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