Castor oil is used as a lubricant in jet planes.
-5
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
The life boat was patented in 1845!
29
More than a billion transistors are manufactured every second.
-25
The average car produces a pound of pollution every 25 miles!
18
Sony researchers have developed a refrigerator that only opens when you smile.
9