Which compound, endorsed by the U.S. Public Health Service in 1950, is added to many public water supplies to prevent tooth decay?

What was the name of the Jetsons' family dog? In which 1991 film does Steve Martin get in his car to drive to the house next door? Fittingly, which animal is named in the title of Los Lobos' 1984 album "How Will the ___ Survive?" Fittingly, Nathan Lane played Nathan Detroit in a 1992 Broadway revival of which musical? On April 11, 1951, President Truman relieved which general of his commands in the Far East? Which Founding Father lived from April 13, 1743, to July 4, 1826? In 1828, Noah Webster published what kind of landmark reference book for American English? The English army's defeat at Formigny on April 15, 1450, came near the end of which long war?