The cigarette lighter was invented before the match.
210
The IRS processes more than 2 billion pieces of paper each year.
28
Contrary to popular belief, putting sugar in a car's gas tank will NOT ruin its engine.
25
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
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
A small airplane can fly backwards.
75
