Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
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 cigarette lighter was invented before the match.
210
The IRS processes more than 2 billion pieces of paper each year.
28
Castor oil is used as a lubricant in jet planes.
-5
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
Kleenex tissues were originally used as filters in gas masks.
46