Sony researchers have developed a refrigerator that only opens when you smile.
9
The ball on top of a flagpole is called a 'truck'.
24
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
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Whale oil was used in automobile transmissions as late as 1973.
56
Originally, Nintendo was a playing card manufacturer.
70
A small airplane can fly backwards.
75
In the early 1960's, Porsche commercially manufactured farm tractors.
24