Sony researchers have developed a refrigerator that only opens when you smile.
9
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
Jumbo jets use 4,000 gallons of fuel to take off.
19
Attics were invented in Attica.
43
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
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
Any modern jet is capable of breaking the sound barrier.
34