Rugby, North Dakota is the geographical center of North America, not the geographical center of the United States. That is located in Butte County, South Dakota, on the state's western border. If only the 48 contiguous states are included, the point is in Smith County, Kansas.

Butterflies cannot fly if their body temperature is less than 86 degrees.

The color combination with the strongest visual impact is black on yellow. Next to follow black on white, yellow on black, white on black, dark blue o

There are 284 restrooms along the 17.5 miles of corridors in the Pentagon.

A kangaroo cannot jump if its tail is lifted off the ground. It needs its tail for pushing off.

Each red blood cell lives an average of 4 months and travels between the lungs and other tissues 75,000 times before returning to the bone marrow to die.

Male monkeys lose the hair on their heads in the same manner men do.

When she was a young woman, sex therapist Dr. Ruth Westheimer once lived in Israel. There, she was a trained sniper. She was so adept at handling a Sten gun — a British submachine gun — that she could quickly assemble one while blindfolded.

U.S. Army doctor D.W. Bliss had the unique role of attending to two U.S. presidents after they were shot by assassins. In 1865, he was one of 16 doctors who tried to save Abraham Lincoln; in 1881, Bliss supervised the care of James Garfield.

The title Mona Lisa stems from the Giorgio Vasari biography of Leonardo da Vinci, published 31 years after Leonardo's death. In it, he identified the sitter as Lisa, the wife of wealthy Florentine businessman Francesco del Giocondo. "Mona" is a common Italian contraction of "madonna," meaning "my lady," the equivalent of the English "Madam," so ...Read more

To assure full flavor, chill wine appropriately. Observe the 20-minute rule: Pull whites out of the refrigerator 20 minutes before serving; put reds in 20 minutes before serving.

After Helen Keller graduated magna cum laude from Radcliffe College in 1904, she began writing about blindness, a subject taboo in women's magazines because so many cases were related to venereal disease.

It was Swiss chemist Jacques Edwin Brandenberger who invented cellophane, back in 1908.

Medical experts warn that compulsive exercising can be just as bad for a person as no exercise at all. The human body needs 24 hours without exercise about once a week in order to cleanse itself of lactic acid and other waste products of strenuous activity.

The Kentucky Supreme Court has ruled that the prosecution must throw its files wide open to the defense if the accused is suffering from amnesia.

A cat keeps purring, no matter if it is inhaling or exhaling, a baffling accomplishment.

Before settling on the name of Tiny Tim for his character in "A Christmas Carol," three other alliterative names were considered by Charles Dickens. They were Little Larry, Puny Pete, and Small Sam.

An average toilet uses 5 to 7 gallons of water every time it is flushed. A single leaky toilet can waste more than 50 gallons a day, amounting to 18,000 gallons a year.

A simple, moderately severe sunburn damages the blood vessels to such an extent that it takes four to fifteen months for them to return to their normal condition.

Don't use the on/off switch on your personal computer any more than necessary. There's a surge of electricity every time the switch is turned on. For fragile computer chips, it's much like starting the day by jumping into an icy pool. To prolong the life of your home computer, turn it on when you arrive home from work and turn it off again when ...Read more