Jumbo jets use 4,000 gallons of fuel to take off.
19
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Mico headphones read your brainwaves and select music based on your state of mind.
7
More than a billion transistors are manufactured every second.
-25
Castor oil is used as a lubricant in jet planes.
-5
A small airplane can fly backwards.
75
The life boat was patented in 1845!
29