An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The IRS processes more than 2 billion pieces of paper each year.
28
Car airbags kill 1 person for every 22 lives that they save.
80
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
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
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47