This episode's headline: MIA Testimony; What Next?; Grapes of Wrath; Women's Health. The guests include LORD HOWE, Former British Foreign Secretary; DR. BERNADINE HEALY, Director, National Institutes of Health; SEN. JOHN KERRY [D] Massachusetts; CORRESPONDENTS: NIK GOWING; SPENCER MICHELS. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER