An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The United States produces enough plastic film annually to cover the entire state of Texas.
13
A small airplane can fly backwards.
75
The cigarette lighter was invented before the match.
210
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
The average car produces a pound of pollution every 25 miles!
18
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250
There are only 14 blimps in the world.
69