Cities now hold over half the world's population and use or control most of the world's resources. The final destination in your journey is the world's first truly global city - London. It had to develop systems for supplying water, energy and transport to make a city healthy and workable, and its history may point to lessons for future city living. You will explore ideas and plans for making cities economically, socially and environmentally more sustainable as part of a more general exploration of what it means to be a concerned and responsible global citizen in the twenty-first century.Unfortunately due to copyright restrictions the DVD material refered to in this book is not available for sale as a result study of some of the activities is limited.