What acid gives citrus fruits their distinctive sharp flavor?

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Sweetbread is derived from what organ?

Who wrote the opera "Carmen"?

What author was still an English teacher at Maine's Hampden Academy when his first book was published?

Where would you find the active volcano "Erebus"?

What US city is home to the International UFO Museum and Research Center?

What actress played the role of Pamela Barnes Ewing on the TV show "Dallas"?

In the TV show "The Simpsons', which character is allergic to regular milk?

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Who played the blind character in the movie "Daredevil"?

What group was Ringo Starr with before the Beatles?

What brainchild of Wisconsin senator Gaylord Nelson was first celebrated on April 22, 1970?

How much did the United States pay Russia per acre for the purchase of Alaska in 1867?

In the song "The Twelve Days of Christmas", how many drummers are drumming?

What year did Belinda Carlisle release the song "I Get Weak"?

Who sang the hit song "Confide in Me" in 1994?