The first alarm clock could only ring at 4 a.m.
120
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Kleenex tissues were originally used as filters in gas masks.
46
Sony researchers have developed a refrigerator that only opens when you smile.
9
About 39,000 gallons of water are used to produce the average car!
14