- When Joseph Gayetty invented toilet paper in 1857, he had his name printed on each sheet.

- There are 293 ways to make change for a dollar.

- At 90 degrees below zero, exhaled breath freezes in midair and falls to the ground.

- Credit Fritz Lang for the familiar countdown, "three, two, one, liftoff." The phrase appeared in his 1929 film, "Die Frair im Mond" (The Woman in the Moon).

- Most people take an average of seven minutes to fall asleep.

- A cat's normal body temperature is 101.5 degrees; a dog's, 101.

- Reykjavik, Iceland, is warmer than Chicago in the winter.

- Basketball great Wilt Chamberlain, 7 feet 1 inch tall, was the son of 5-foot-8-inch parents.

- An ostrich's intestinal tract is up to 45 feet long.

- The dot over the letter "i" is called a "tittle."

- "Mafia" is an acronym for Morte alla Francia Italia anela - "Death to the French is Italy's cry."

- An average pair of feet will sweat about one-half of a pint of perspiration a day.

- Robert E. Lee's shoe size was only 4 1/2.

- Ancient Egyptians shaved off their eyebrows to mourn the death of their cats.

- A female African elephant can be pregnant for almost two years.

- "Jack" is the most often-recurring name in nursery rhymes.

- The world's biggest clams weigh almost 500 pounds.

- Droplets of moisture from a sneeze can travel as far as 12 feet and as fast as 100 miles per hour.

- The capacity of the average adult's stomach is about two quarts.

- Giraffes can't swim.

- The real name of television's Mr. Ed was Bamboo Harvester.