A small airplane can fly backwards.
75
More than a billion transistors are manufactured every second.
-25
Energy is being wasted if a toaster is left plugged in after use.
21
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Originally, Nintendo was a playing card manufacturer.
70