Editors: Ilka & Andreas Ruby Editorial Coordination: Elena Schütz Graphic Design: Leonard Streich Text Editor: April Elizabeth Lamm Proof Reader: Uta Hoffmann Transcripts: Anna Mauch, Julian Schubert A CIP catalogue record for this book is available from the Library of Congress, Washington D.C., USA. Bibliographic information published by Die Deutsche Bibliothek. Die Deutsche Bibliothek lists this publication in the Deutsche Nationalbibliographie; detailed bibliographic data is available in the internet at http: / /dnb.ddb.de This work is subject to copyright. All right are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in other ways, and storage in data banks. For any kind of use, permission of the copyright holder must be obtained. © 2008 Ruby Press, Berlin © 2008 Holcim Foundation for Sustainable Construction, Zürich © The contributors for their texts and images http: / /www.ruby-press.com http: / /www.holcimfoundation.org Printed in Germany Distributed by Idea Books, Amsterdam ISBN 978-3-00-024878-8