As people increasingly migrate to urban settings and more than half of the world's population now lives in cities, it is vital to plan and provide for sustainable and resilient food systems which reflect this challenge. This volume presents experience and evidence-based "state of the art" chapters on the key dimensions of urban food challenges and types of intra- and peri-urban agriculture. The book provides urban planners, local policy makers and urban development practitioners with an overview of crucial aspects of urban food systems based on an up to date review of research results and practical experiences in both developed and developing countries. By doing so, the international team of authors provides a balanced textbook for students of the growing number of courses on sustainable agriculture, food and urban studies, as well as a solid basis for well-informed policy making, planning and implementation regarding the development of sustainable, resilient and just urban food systems.

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'This is surely the most impressive and important publication to come out of the UN system for many years.' Peter Adamson, founder, New Internationalist, and author and researcher of UNICEF's The State of the World's Children from 1980 to 1995 The world's governments agreed at the Millennium Summit to halve, by 2015, the number of people who lack access to safe water. With rapidly growing urban populations the challenge is immense. Water and Sanitation in the World's Cities is a comprehensive and authoritative assessment of the problems and how they can be addressed. This influential publication by the United Nations Human Settlements Programme (UN-HABITAT) sets out in detail the scale of inadequate provision of water and sanitation. It describes the impacts on health and economic performance, showing the potential gains of remedial action; it analyses the proximate and underlying causes of poor provision and identifies information gaps affecting resource allocation; it outlines the consequences of further deterioration; and it explains how resources and institutional capacities - public, private and community - can be used to deliver proper services through integrated water resource management.

This book gathers the latest insights into soil health and its sustainability, providing an up-to-date overview of the various aspects of soil quality and fertility management, e.g., plant-microbe interactions to maintain soil health; and the use of algal, fungal and bacterial fertilizers and earthworms for sustainable soil health and agricultural production. It first discusses the past, present, and future scenarios of soil health, and then explores factors influencing soil health, as well as the consequences of degradation of soil health for sustainable agriculture. Lastly it highlights solutions to improve and maintain soil health so as to achieve greater productivity and sustainability without damaging the soil system or the environment. Soil health is defined as the capacity of a soil to function within ecosystem frontiers, to sustain biological productivity, to maintain environmental quality and to promote plant, animal and human health. Soil health is established through the interactions of physical, chemical and biological properties, e.g., soil texture, soil structure, and soil organisms. Healthy soil provides adequate levels of macro- and micronutrients to plants and contains sufficient populations of soil microorganisms. As a result of the increasingly intensified agriculture over the past few decades, soils are now showing symptoms of exhaustion and stagnating or declining crop yields. Exploring these developments as well as possible solutions based on holistic and sustainable approaches, this book is a valuable resource for researchers in the area of soil and environmental science, agronomy, agriculture, as well as students in the field of botany, ecology and microbiology.