A leap year happens every four years, except where the year is divisible by 400

A bibliophile is a collector of rare books. A bibliopole is a seller of rare books

A bibliophile is a collector of rare books. A bibliopole is a seller of rare books

While performing her duties as queen, Cleopatra sometimes wore a fake beard

While performing her duties as queen, Cleopatra sometimes wore a fake beard

The only member of the band ZZ Top to not have a beard has the last name Beard

The only member of the band ZZ Top to not have a beard has the last name Beard

More people voted in the first week of Big Brother 2 than the number of people who voted in Scotland for the General Election 2001.

More people voted in the first week of Big Brother 2 than the number of people who voted in Scotland for the General Election 2001.

Poliosis is the graying of the hair. It comes from polios, the Greek word for "gray."

Poliosis is the graying of the hair. It comes from polios, the Greek word for "gray."

Mutt is short for muttonhead, early English slang for dimwit or dullard. The word was not used in reference to dogs until early in the 20th century.

Mutt is short for muttonhead, early English slang for dimwit or dullard. The word was not used in reference to dogs until early in the 20th century.

Beer is less fattening than milk

Beer is less fattening than milk

If one were to unravel the entire human alimentary canal (esophagus, stomach, large and small intestines), it would reach the height of a three-story building.

If one were to unravel the entire human alimentary canal (esophagus, stomach, large and small intestines), it would reach the height of a three-story building.

The largest smoking corporation (Philip Morris) has anti-smoking ads.

The largest smoking corporation (Philip Morris) has anti-smoking ads.

Light travels at 186,000 miles per second. That means the distance travelled by light in one year is just under 6.000.000.000.000 miles!