Whale oil was used in automobile transmissions as late as 1973.
56
A small airplane can fly backwards.
75
More than a billion transistors are manufactured every second.
-25
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
Kleenex tissues were originally used as filters in gas masks.
46
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250