Any modern jet is capable of breaking the sound barrier.
34
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
More than a billion transistors are manufactured every second.
-25
Attics were invented in Attica.
43
A small airplane can fly backwards.
75
Kleenex tissues were originally used as filters in gas masks.
46