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
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
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
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250
Castor oil is used as a lubricant in jet planes.
-5
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
A toaster uses almost half as much energy as a full-sized oven.
33