SIEGFRIED, Tom. American, b. 1950. Genres: Physics. Career: Writer and editor. Fort Worth Press, Fort Worth, TX, business and science writer, 1974-75; Texas Christian University, journalism faculty, 1979-83; Dallas Morning News, Dallas, TX, science editor, 1985-. Science Journalism Center, University of Missouri, Columbia, national advisory board, 1989-94; science journalist-in-residence, University of Wisconsin, Madison, 1992; Council for the Advancement of Science Writing, member of board of directors, 1999-. Publications: The Bit and the Pendulum: From Quantum Computing to M Theory-The New Physics of Information, 2000; Strange Matters: Undiscovered Ideas at the Frontiers of Space and Time, 2002. Address: Dallas Morning News, PO Box 655237, Dallas, TX 75265, U.S.A.