What does the "c" in "E=mc²" represent?

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What contribution to Christmas is John Calcott Horsely credited with?

How many gigabytes of capacity did the first iPod have?

What did Nestle freeze dry in 1938 that led to the development of powdered food products?

Which book of the Bible recounts the story of Noah and the Ark?

What was originally sold in 1965 under the name "Chemgrass"?

What is the sixth commandment?

The Columbia River flows into what body of water?

What character ran the general store on both "Green Acres" and "Petticoat Junction"?

What famous rapper's real name is Chris Bridges?

Which TV character has the surname "Sagdiyev"?

What city is the setting for the TV series "Mad Men"?

Which US president lived at the Monticello mansion?

What nickname was given to General Thomas J. Jackson during the Civil War?

Traffic lights were first used in London in which year?

Who wrote the song "Moon River" performed by Audrey Hepburn in the film "Breakfast at Tiffany's"?