"It has long been assumed that skyscrapers, as high consumers of energy and materials, cannot be sensitive to ecological and environmental issues. Yeang's towers, by contrast, use vegetation as a crucial component of the facade and interior, acting both to remove heat and to purify the air. In a wider sense, Yeang sees skyscrapers as 'cities in the sky', with carefully planned pedestrian linkages, public zones, a wide variety of uses, stunning vistas and a sense of place extended upwards. His philosophy has had a global impact." "Yeang's ideas and solutions for the skyscraper, discussed and illustrated in depth in this comprehensive monograph, offer a compelling vision of urban habitation in the twenty-first century."--BOOK JACKET.