About the editors

I. PRIGOGINE is Director of the International Solvay Institutes, Universite Libre de Bruxelles, Belgium. One of the foremost figures in his field, Professor Prigogine is the Ashbel Smith Professor of Physics at the University of Texas at Austin, where he is also Director of the Ilya Prigogine Center for Studies in Statistical Mechanics and Complex Systems. He is the holder of 40 honorary degrees, and many scientific prizes, special chairs, and visiting professorships. In 1977 he was awarded the Nobel Prize in chemistry. Professor Prigogine is a member of many national academies, including the American Academy of Arts and Sciences, the National Academy of Sciences, and the Russian National Academy of Sciences. In 1989 he was given the title of viscount by the King of Belgium.

STUART A. RICE is the Frank P. Hixon Distinguished Service Professor at the James Franck Institute and the Department of Chemistry of the University of Chicago. A former dean of the university's Division of Physical Sciences, Professor Rice is a world-renowned authority on chemical physics and has received scores of awards and honors. A former Alfred P. Sloan Fellow and Guggenheim Fellow, Professor Rice is also a Fellow of the American Academy of Arts and Sciences, the National Academy of Sciences, and the American Philosophical Society.