What popular toy was invented by taking empty pie plates are throwing them in the air?

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What color is pure caffeine?

What was pictured on the face of the US penny just prior to Abraham Lincoln?

What word for mud bricks comes to us from the ancient Egyptian word "dbt"?

What year was the first iPad released?

What duo published the story of "Hansel & Gretel" in 1812?

What detective novel begins with a dinner hosted by the mysteriously absent "Mr. U. N. Owen"?

Where is the Darjeeling tea grown?

Which river separates Mexico from the US?

This protein makes the blood red in color?

Retinol is another name for what Vitamin?

What US city is mentioned in the first line of the Bob Seger song "Turn the Page"?

In the movie "The Godfather', where was Santino Corleone gunned down?

Who played TV detective Frank Cannon?

What does a sphygmomanometer measure?

What comes in varieties freestone and clingstone?