Book excerpt: This book is a call to arms to all architects, designers and built environment professionals. To avoid a climate catastrophe and achieve a regenerative built environment, the use of new materials and any excess waste in resources need to be cut out from the very beginning of the design process. This requires far-reaching change in established industry processes. How might this begin? What are the key fundamentals you need to know? How can a more effective model be applied? This book, a much-updated second edition of the author’s previous work Building Revolutions, answers all your questions. Inspiring, but never overwhelming, the Handbook to Building a Circular Economy is your must-have companion to helping create a more sustainable future. It explains in simple and practical terms how the principles of a circular economy can be applied to the built environment, thereby reducing the resources required to construct, fit-out, maintain and refurbish buildings. Case studies include: The Forge, UK, by Landsec The Bath School of Art, UK, by Grimshaw Urban Mining and Recycling Experimental Unit, Switzerland, by Werner Sobek NASA Sustainability Base, USA, by William McDonough + Partners University of East Anglia Enterprise Centre, UK, by Architype Park 20|20, The Netherlands, by William McDonough + Partners.