This publication looks in-depth at the skyscraper builtform and at the ways in which this tall building-type can be designed to be as ecologically-sustainable as possible. It reviews and illustrates the many eco-towers designed by Ken Yeang of T. R. Hamzah & Yeang Sdn. Bhd. and their experiments trying to design the skyscraper as a man-made ecological system. The book is superbly graphically and photographically illustrated and contains detailed technical analyses by Yeang's engineering and building technology collaborators.