How often are brain cells replaced?

More Questions:

Valentine's Day is also known as the "Feast of..." what?

Which grandmaster did Bobby Fischer defeat in 1972 and became the first American to win the world chess title?

Which novel did Joseph Heller write as a sequel to "Catch-22"?

Viktor Frankl's book "Man's Search for Meaning" documents the writers experiences during which war?

In "Alice in Wonderland', what is the last thing that disappears on the Cheshire Cat?

Who flew from England to America in a giant peach carried by seagulls?

What modern day country is the Lighthouse of Alexandria located in?

What two countries share land borders with Tunisia?

For what movie did Jack Nicholson win his first Academy Award?

For what 1993 movie did Anna Paquin win an Academy Award?

What was the name of Phil Collins" first solo album?

In the TV show "The Simpsons', why did Bart and Homer have to work at the carnival?

Who earned an Oscar nomination for her role in the movie "The Color Purple"?

What was Lyndon B. Johnson's middle name?

Who played the role of the private investigator in the 1988 film "Who Framed Roger Rabbit"?