How many years are in a semicentennial?

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What British statesman wrote "A History of the English-Speaking People"?

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The Potomac River empties into what bay?

Which US state is home to the Inyo Mountains?

Hans Lippershey made the worlds first practical what?

What name is given to trees that lose their leaves annually?

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What was the name of the first manned mission to land on the Moon?

In The Simpsons, who sings to Homer and the other astronauts in space?

Which actor portrayed Mulder and Scully's supervisor in the TV show "The X-Files"?

What was the real first name of David Soul's "Hutch" on "Starsky and Hutch"?

How many episodes of "The Cosby Show" were made?

What was the name of the Italian cruise ship hijacked by Palestinian terrorists in 1985?

What royal subject married Anne Boleyn?