... DIRECTOR Scientific American, Inc 415 Madison Avenue • New York, NY 1001 7-1 111 (212) 75 4-0 550 Scientific American May 1997 Copyright 1997 Scientific American, Inc PRINTED IN U.S.A LETTERS TO THE ... comfort to the passenger.” I H 12 Scientific American May 1997 Copyright 1997 Scientific American, Inc 50, 100 and 150 Years Ago NEWS AND 17 18 IN BRIEF SCIENCE AND THE CITIZEN ANALYSIS 20 BY THE NUMBERS ... Brenders 1997 Art courtesy of the artist and Mill Pond Press, Inc Copyright 1997 Scientific American, Inc May 1997 Vo l u m e Numb e r FROM THE EDITORS LETTERS TO THE EDITORS 10 50, 100 AND 150 YEARS...