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

More Questions:

Rennet, an enzyme-filled juice from animal stomachs, is used in the making of what?

What instrument is jazz musician Charlie Mingus mostly associated with?

What number shirt did Pele wear?

What is the Darlington Raceway also known as?

Crusiverbalism refers to what activity?

What Converse salesman is the only person in both the Basketball Hall of Fame and the Sporting Goods Hall of Fame?

What Tchaikovsky ballet includes "Dance of the Sugar-Plum Fairy" and "Waltz of the Flowers"?

Who wrote the book "Jaws"?

Which European country replaced the Deutsche mark with the Euro?

Bob Eubanks was the original host of what game show where couples competed against each other?

What famous rapper's real name is Marshall Mathers?

Who won the first Boat Race between Oxford and Cambridge?

What was the birth name of sharpshooter Annie Oakley?

Who beat out FDR and Gandhi to be named "Time's Person of the Century" in 1999?

What novel by Geoffrey Household was about an attempt to kill Hitler?