Book excerpt: The greatest humanitarian challenge we face today is that of providing shelter. Currently, one in seven people lives in a slum or refugee camp, and more than 3,000,000,000 people--nearly half the world's population--do not have access to clean water or adequate sanitation. The physical design of our homes, neighborhoods and communities shapes every aspect of our lives. Yet too often architects are desperately needed in the places where they can least be afforded.Edited by Architecture for Humanity and now on its fifth printing, Design Like You Give a Damn is a compendium of innovative projects from around the world that demonstrate the power of design to improve lives. The first book to bring the best of humanitarian architecture and design to the printed page, Design Like You Give a Damn offers a history of the movement toward socially conscious design, and showcases more than 80 contemporary solutions to such urgent needs as basic shelter, healthcare, education and access to clean water, energy and sanitation.Design Like You Give a Damn is an indispensable resource for designers and humanitarian organizations charged with rebuilding after disaster and engaged in the search for sustainable development. It is also a call to action to anyone committed to building a better world.