Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The cigarette lighter was invented before the match.
210
Castor oil is used as a lubricant in jet planes.
-5
The life boat was patented in 1845!
29
Mico headphones read your brainwaves and select music based on your state of mind.
7
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4