In the Harry Potter books, the entrance to Gryffindor Tower is hidden behind a painting of whom?

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Who is credited with inventing Coca-Cola?

What popular brand of soup was introduced in 1897?

What kind of farm is a formicarium?

What name is given to the diagram in which sets are represented by circles?

What cousin of the glockenspiel was named for its ethereal, "heavenly" sound?

Who considered founding a utopian art colony at Arles in France prior to his suicide?

What is Chicago's main international airport?

What is the closest foreign country to the US which does not touch the US?

What is the largest rodent in the US?

How many crew members died when the space shuttle Challenger exploded in 1986?

Who has been played in a movie by both Norma Shearer and Kirsten Dunst?

The band "The Who" were also known as "The Detours" and what other name?

Which state was the first to ratify the 13th Amendment to abolish slavery?

What city was Archduke Ferdinand killed in?

What was the nationality of the first man to conquer the summit of mount Everest?