An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
A toaster uses almost half as much energy as a full-sized oven.
33
Car airbags kill 1 person for every 22 lives that they save.
80
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47