Castor oil is used as a lubricant in jet planes.
-5
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
There are only 14 blimps in the world.
69
The first alarm clock could only ring at 4 a.m.
120
More than a billion transistors are manufactured every second.
-25
Car airbags kill 1 person for every 22 lives that they save.
80
The United States produces enough plastic film annually to cover the entire state of Texas.
13