First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
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
Mico headphones read your brainwaves and select music based on your state of mind.
7
Castor oil is used as a lubricant in jet planes.
-5
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
Energy is being wasted if a toaster is left plugged in after use.
21
The cigarette lighter was invented before the match.
210