Minimizing environmental impact, recycling materials, energy efficiency and rainwater collection are just some of the terms that determine the work of many of today's architects. The field of architecture is becoming increasingly aware that sustainability is much more than just a passing trend; that it is in fact a necessity if we want to be optimistic about our future.Particular emphasis is placed on innovative ideas, new techniques and the most efficient energy systems. All the projects presented in this book have been carried out by prestigious architecture firms whose work is known and respected throughout the world.