PHILLIP A. GRIFFITHS, (Chair), Director,

Institute for Advanced Study, Princeton, New Jersey

BRUCE M. ALBERTS,^* President,

National Academy of Sciences, Washington, D.C.

PETER DIAMOND, Professor of Economics,

Massachusetts Institute of Technology, Cambridge

GERALD DINNEEN,^* Retired Vice President,

Science and Technology, Honeywell, Inc., Edina, Minnesota

MILDRED S. DRESSELHAUS, Institute Professor of Electrical Engineering and Physics,

Massachusetts Institute of Technology, Cambridge

JAMES J. DUDERSTADT, President Emeritus and University Professor of Science and Engineering,

Millennium Project, University of Michigan, Ann Arbor

MARYE ANNE FOX, Chancellor,

North Carolina State University, Raleigh

RALPH E. GOMORY, President,

Alfred P. Sloan Foundation, New York, New York

RUBY P. HEARN, Vice President,

The Robert Wood Johnson Foundation, Princeton, New Jersey

PHILIP W. MAJERUS, Professor of Medicine, Biochemistry, and Molecular Biophysics and Director,

Division of Hematology-Oncology, Washington University School of Medicine, St. Louis, Missouri

JUNE E. OSBORN, President,

Josiah Macy, Jr. Foundation, New York, New York

KENNETH I. SHINE,^* President,

Institute of Medicine, Washington, D.C.

MORRIS TANENBAUM, Retired Vice Chairman and Chief Financial Officer,

AT&T, Short Hills, New Jersey

WILLIAM JULIUS WILSON, Malcolm Wiener Professor,

Center for Social Policy, John F. Kennedy School of Government, Harvard University, Cambridge, Massachusetts

WILLIAM A. WULF,^* President,

National Academy of Engineering, Washington, D.C.

RICHARD BISSELL, Executive Director.

DEBORAH D. STINE, Associate Director and Study Director

ANNE-MARIE MAZZA, Senior Program Officer

BRETT WILLETTE, Research Associate

CAROLYN RYAN, Research Associate

MARION RAMSEY, Administrative Associate

SUSAN COZZENS, Consultant

ALAN ANDERSON, Consultant Science Writer

NORMAN GROSSBLATT, Editor