The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
In the early 1960's, Porsche commercially manufactured farm tractors.
24
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
More than a billion transistors are manufactured every second.
-25
Attics were invented in Attica.
43
Jumbo jets use 4,000 gallons of fuel to take off.
19
A toaster uses almost half as much energy as a full-sized oven.
33
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2