What are the only 100% guarantees of safety in the TV show "Big Brother"?

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After his death in a 1998 skiing accident, what famous song title was placed on Sonny Bono's headstone?

What is the name of the leading female singer in an opera?

The Tour de France was first staged in which decade?

What does a bibliophile enjoy?

What university presents the annual Pulitzer Prize journalism awards?

What vitamin was isolated from fish liver oil in 1917?

In the 1990 movie "Pretty Woman', Julia Roberts is payed to stay for how long with Richard Gere?

What was the name of the cab company in the TV show "Taxi"?

What track from U2's "The Joshua Tree" album won a Grammy for its video?

How many of the seven dwarfs had mustaches?

Which ballad by the band Poison is about a Vietnam veteran and the homeless?

What year saw the release of Whitney Houston's self-titled debut album?

Rodrigo Diaz de Vivar famous under what nickname?

Who was the first US actress to be featured on a US postage stamp?

What is the study of rocks and their formation called?