Kleenex tissues were originally used as filters in gas masks.
46
Castor oil is used as a lubricant in jet planes.
-5
Whale oil was used in automobile transmissions as late as 1973.
56
More than a billion transistors are manufactured every second.
-25
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
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 United States produces enough plastic film annually to cover the entire state of Texas.
13
The ball on top of a flagpole is called a 'truck'.
24