This episode's headline: Debating Day Care; Hazardous Duty; Trevor Howard Tribute. The guests include In Washington: JAN CALDERONE-YOKUM, Rosemount Center; STUART BUTLER, Heritage Foundation; In New York: ELLEN GALINSKY, Bank Street College; REPORTS FROM NEWSHOUR CORRESPONDENTS: COKIE ROBERTS; KWAME HOLMAN. Byline: In New York: ROBERT MACNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor