A small airplane can fly backwards.
75
More than a billion transistors are manufactured every second.
-25
Jumbo jets use 4,000 gallons of fuel to take off.
19
The life boat was patented in 1845!
29
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Whale oil was used in automobile transmissions as late as 1973.
56
Kleenex tissues were originally used as filters in gas masks.
46