500 Fifth Street, N.W. Washington, D.C. 20001

NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance.

Support for this project was provided by the W. M. Keck Foundation. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the organizations or agencies that provided support for the project.

International Standard Book Number 0-309-09435-6 (Book)

International Standard Book Number 0-309-54727-X (PDF)

Available from the Committee on Science, Engineering, and Public Policy, 500 Fifth Street, NW, Washington, D.C. 20001; 202-334-2807; Internet,

Additional copies of this report are available from the
National Academies Press,
500 Fifth Street, N.W., Lockbox 285, Washington, D.C. 20055; (800) 624-6242 or (202) 334-3313 (in the Washington metropolitan area); Internet,

Copyright 2005 by the National Academy of Sciences. All rights reserved.

Printed in the United States of America

Grateful acknowledgment is made for permission to use the following items: the drawings on pages 25, 40, 69, and 150 are reprinted with permission by Sid Harris, drawings on pages 109, 144, and 178 were commissioned by the Committee and appear courtesy of Mike Mikula; and the drawing on page 132 is reprinted with permission from the New Yorker/Cartoon Bank.

The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement