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
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
More than a billion transistors are manufactured every second.
-25
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
Whale oil was used in automobile transmissions as late as 1973.
56