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
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
A small airplane can fly backwards.
75
The cigarette lighter was invented before the match.
210
Attics were invented in Attica.
43
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
The first alarm clock could only ring at 4 a.m.
120