Scientific American, Inc.
415 Madison Avenue, New York, NY 10017-1111
Tel.: 001212/754-0550

Chairman and Chief Executive Officer: John J. Hanley
Co-Chairman: Dr. Pierre Gerckens

Corporate Officers: John J. Moeling, Jr., President; R. Vincent Barger, Chief Financial Officer; Robert L. Biewen, Vice President

Editor in Chief: John Rennie

Board of Editors: Michelle Press, Managing Editor; Marguerite Holloway, News Editor; Timothy M. Beardsley; W. Wayt Gibbs; John Horgan, Senior Writer; Kristin Leutwyler; Philip Morrison, Book Editor; Madhusree Mukerjee; Sasha Nemecek; Corey S. Powell; Ricki L. Rusting; Gary Stix; Paul Wallich; Philip M. Yam

Administration: John J. Moeling, Jr., Publisher; Marie M. Beaumonte, General Manager

Circulation: Lorraine Leib Terlecki, Associate Publisher/Circulation Director