Castor oil is used as a lubricant in jet planes.
-5
The ball on top of a flagpole is called a 'truck'.
24
Attics were invented in Attica.
43
The IRS processes more than 2 billion pieces of paper each year.
28
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7