The average brain comprises 2 percent of a person's total body weight. Yet it requires 25 percent of all oxygen used by the body, as opposed to 12 percent used by the kidneys and 7 percent by the heart.
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According to experts, 30 percent of all marriages occur because of friendship.
Phobos, one of the moons of Mars, is so close to its parent planet that it could not be seen by an observer standing at either of Mars poles. Phobos make three complete orbits around Mars every day.
Until the Middle Ages, passports were given only to the privileged well-to-do. In 1215, the Magna Carta established that "All merchants are to be safe and secure in leaving and entering England." One of the earliest U.S. ...Read More
Boot and shoemakers are often commonly called "cobblers." But the word cobbler is more properly applied to shoe repairmen. Those who actually make footwear are known as "cordwainers." This term has its antecedents in the ...Read More
In 1931, Lili de Alvarez was the first woman to wear shorts at Wimbledon.
Supercells are similar to other thunderstorms, except they're bigger, stronger, and meaner. While a strong thunderstorm, associated with a passing cold front, may produce a tornado, supercells can produce several tornadoes...Read More