What precious stones were originally used to polish axes in the Stone Age?

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What do you call the center of a target?

Which 1965 Science fiction novel featured the Houses of Corrino, Harkonnen, and Atreides?

What country's name is the local pronunciation of the name of its British discoverer, Thomas Gilbert?

In what city would you find Champ de Mars?

Which US President was responsible for the "Louisiana Purchase"?

The strength of prescription eyeglasses is measured in what unit?

What constellation represents a hunter with a prominent belt and sword?

In the movie "Indiana Jones and the Temple of Doom', what is the nickname of Indiana's young sidekick?

What is the home planet of Hasbro's Transformers toys?

On the TV show "Lost', what group conducts scientific experiments on the island?

David Bowie's "Let's Dance" album was released in what year?

In the TV show "The Simpsons', whose mother did Comic Book Guy once date?

What royal subject married Sarah Ferguson?

What was the first building in the world to have more than 100 floors?

Who is the only US President to serve two non-consecutive terms?