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Cities have experienced an unprecedented rate of growth in the last decade. More than half the world's population lives in urban areas, with the U.S. percentage at 80 percent. Cities have captured more than 80 percent of the globe's economic activity and offered social mobility and economic prosperity to millions by clustering creative, innovative, and educated individuals and organizations. Clustering populations, however, can compound both positive and negative conditions, with many modern urban areas experiencing growing inequality, debility, and environmental degradation. The spread and continued growth of urban areas presents a number of concerns for a sustainable future, particularly if cities cannot adequately address the rise of poverty, hunger, resource consumption, and biodiversity loss in their borders. Intended as a comparative illustration of the types of urban sustainability pathways and subsequent lessons learned existing in urban areas, this study examines specific examples that cut across geographies and scales and that feature a range of urban sustainability challenges and opportunities for collaborative learning across metropolitan regions. It focuses on nine cities across the United States and Canada (Los Angeles, CA, New York City, NY, Philadelphia, PA, Pittsburgh, PA, Grand Rapids, MI, Flint, MI, Cedar Rapids, IA, Chattanooga, TN, and Vancouver, Canada), chosen to represent a variety of metropolitan regions, with consideration given to city size, proximity to coastal and other waterways, susceptibility to hazards, primary industry, and several other factors.

The problems related to the process of industrialisation such as biodiversity depletion, climate change and a worsening of health and living conditions, especially but not only in developing countries, intensify. Therefore, there is an increasing need to search for integrated solutions to make development more sustainable. The United Nations has acknowledged the problem and approved the “2030 Agenda for Sustainable Development”. On 1st January 2016, the 17 Sustainable Development Goals (SDGs) of the Agenda officially came into force. These goals cover the three dimensions of sustainable development: economic growth, social inclusion and environmental protection. The Encyclopedia of the UN Sustainable Development Goals comprehensively addresses the SDGs in an integrated way. It encompasses 17 volumes, each devoted to one of the 17 SDGs. This volume is dedicated to SDG 6 "Ensure availability and sustainable management of water and sanitation for all". Water and sanitation are fundamental to human well-being. Integrated water resources management is essential to ensure availability and sustainable management of water and sanitation for all and to the realization of Sustainable Development. Concretely, the defined targets are: Achieve universal and equitable access to safe and affordable drinking water for all Achieve access to adequate and equitable sanitation and hygiene for all and end open defecation, paying special attention to the needs of women and girls and those in vulnerable situations Improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally Substantially increase water-use efficiency across all sectors and ensure sustainable withdrawals and supply of freshwater to address water scarcity and substantially reduce the number of people suffering from water scarcity Implement integrated water resources management at all levels, including through transboundary cooperation as appropriate Protect and restore water-related ecosystems, including mountains, forests, wetlands, rivers, aquifers and lakes Expand international cooperation and capacity-building support to developing countries in water- and sanitation-related activities and programmes, including water harvesting, desalination, water efficiency, wastewater treatment, recycling and reuse technologies Support and strengthen the participation of local communities in improving Uwater and sanitation management Editorial Board Ulisses M. Azeiteiro, Anabela Marisa Azul, Luciana Brandli, Dominique Darmendrail, Despo Fatta–Kassinos, Walter Leal Filho, Susan Hegarty, Amanda Lange Salvia, Albert Llausàs, Paula Duarte Lopes, Javier Marugán, Fernando Morgado, Wilkister Nyaora Moturi, Karel F. Mulder, Alesia Dedaa Ofori, Sandra Ricart

In a rapidly urbanizing and globalized world, cities have been the epicentres of COVID-19 (coronavirus). The virus has spread to virtually all parts of the world; first, among globally connected cities, then through community transmission and from the city to the countryside. This report shows that the intrinsic value of sustainable urbanization can and should be harnessed for the wellbeing of all. It provides evidence and policy analysis of the value of urbanization from an economic, social and environmental perspective. It also explores the role of innovation and technology, local governments, targeted investments and the effective implementation of the New Urban Agenda in fostering the value of sustainable urbanization.

The Working Group II contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) provides a comprehensive assessment of the scientific literature relevant to climate change impacts, adaptation and vulnerability. The report recognizes the interactions of climate, ecosystems and biodiversity, and human societies, and integrates across the natural, ecological, social and economic sciences. It emphasizes how efforts in adaptation and in reducing greenhouse gas emissions can come together in a process called climate resilient development, which enables a liveable future for biodiversity and humankind. The IPCC is the leading body for assessing climate change science. IPCC reports are produced in comprehensive, objective and transparent ways, ensuring they reflect the full range of views in the scientific literature. Novel elements include focused topical assessments, and an atlas presenting observed climate change impacts and future risks from global to regional scales. Available as Open Access on Cambridge Core.

Urban Sanitation covers all stages of the planning process and shows how unified urban sanitation planning is a vital weapon in the war against disease. This book is for all decision makers and their advisers with a direct or indirect interest in urban sanitation. It can be used at international, national, state or provincial, municipal and local levels. It is also suitable as a text for infrastructure planning courses. The first five chapters outline the nature of urban sanitation problems, identify effective strategic responses to them and set out practical ways in which these strategic principles can be applied. Four chapters cover critical aspects of the strategic planning process: sanitation and hygiene promotion; information collection and analysis; technology choice; and participatory workshops. The final chapter provides guidance on putting the plan into action. The book goes beyond simplistic formulae to suggest ways in which formal plans, market forces and actions at the local level can be brought together to provide a viable response to sanitation problems. The approach is simple but has potential to bring about significant impacts if regularly applied by all stakeholders, from local groups through to international agencies. It draws on a wealth of field experience and in doing so provides tried and tested findings and recommendations in 32 case studies. Supplementary sections set out the links between sanitation and health, review sanitation technologies, provide information on participatory methods and detail sources of further information.

With cities striving to meet sustainable development goals, circular urban systems are gaining momentum, especially in Europe. This research-based book defines the circular city and circular development. It explains the shift in focus from a purely economic concept, which promotes circular business models in cities, to one that explores a new approach to urban development. This approach offers huge opportunities and addresses important sustainability issues: resource consumption and waste; climate change; the health of urban populations; social inequalities and the creation of sustainable urban economies. It examines the different approaches to circular development, drawing on research conducted in four European cities: Amsterdam, London, Paris and Stockholm. It explores different development pathways and levers for a circular urban transformation. It highlights the benefits of adopting a circular approach to development in cities, but acknowledges that these benefits are not shared equally across society. Finally, it focuses on the challenges to implementing circular development faced by urban actors. This ground-breaking book will be essential reading to scholars, students, practitioners and policymakers interested in the circular economy, urban sustainability, urban ecology, urban planning, urban regeneration, urban resilience, adaptive cities and regenerative cities.