What chemical element has been added to table salt since 1924, to help prevent goiter?

More Questions:

What four letters are directly to the right of "Q" on a standard keyboard?

In which English city would you find The Christmas Steps?

What is raku?

What precious stone's name was derived from the Greek word meaning "unconquerable"?

What name did Superman have on Krypton?

What famous historical figure turns out to be the disguised Black Knight in Sir Walter Scott's "Ivanhoe"?

What are the five Great Lakes?

What river flows through Jackson Hole, Wyoming?

What piece of technology did IBM develop in 1973 that they nicknamed Winchester?

What is the 3-letter term for a young goat?

What TV mystery series was set in the fictional town of Cabot Cove, Maine?

Who created the popular cartoon TV show "The Simpson"?

In the world of music how is "Harry Lillis" more commonly known?

Who played the blind character in the movie "Scent of a Woman"?

What famous rapper's real name is Marshall Mathers?