The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
The average lightning stroke is six miles long.
Greyhounds can reach their top speed of 45 miles per hour in just three strides.
The only survivor of Custer's last stand was his horse, Commanche.
The lifespan of a pair of craps dice at Caesars Palace is eight hours.
Paul Revere designed the first American money, as well as the state seal of Massachusetts (still used today).
The cheetah is the only cat that can't retract its claws.
The U.S. dollar is the official currency of Panama, where it's called the balboa. Panama has its own coins, however.
Fifty-one percent of St. Louis residents say they have never visited the arch.
The rounded part on the top of a matchbook is called the "saddle."
A player poll found that the most popular token in Monopoly is the racing car.
The first sitcom, The Goldbergs, debuted on CBS in January, 1949.
The first successful mass-produced pinball game was Ballyhoo, released in 1931 by the Bally Pinball Company.
At Andrew Jackson's funeral in 1845, his pet parrot had to be removed because it was swearing.
The sun is 330,330 times larger than Earth.
The natives of the Turkish village of Kuskoy communicate through whistling. This special language allows them to communicate over distances of up to a mile.
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