This photo book focuses on different humanitarian problems facing the urban poor by taking illustrations from different cities around the world. We cover a range of ills that affect the urban poor such as the lack of decent housing, water, work, sanitation, protection from nature and vulnerability to food deficit and slum violence. This book is a collaboration between UN-HABITAT and IRIN and is designed to coincide with the World Habitat Day on 1 October 2007. It focuses specifically on the human penalty of growing cities and slums.