This publication showcases 100 projects and programs of the Asian Development Bank, development partners, governments, and the private sector to support cities across Asia and the Pacific in addressing the challenges of climate change. The climate actions were drawn from multiple sectors—renewable energy, carbon finance, transport, land use, information and communication technology, climate action plans, building energy efficiency, solid waste management, sustainable and low-carbon communities, and climate resilience. The stories featured demonstrate how city-level initiatives contribute to reducing greenhouse gas emissions and building resilience, all while delivering economic, environmental, health, and social co-benefits.

Asia and the Pacific continues to be exposed to climate change impacts. Home to the majority of the world's poor, the population of the region is particularly vulnerable to those impacts. Unabated warming could largely diminish previous achievements of economic development and improvements, putting the future of the region at risk. Read the most recent projections pertaining to climate change and climate change impacts in Asia and the Pacific, and the consequences of these changes to human systems, particularly for developing countries. This report also highlights gaps in the existing knowledge and identifies avenues for continued research.

In 2018, the city of Cape Town faced the prospect of reaching ‘day zero’, that is a combination of natural and human-made factors leading to the complete collapse of its municipal water supply. While the rains eventually fell and a major disaster was averted, the fear of running out of water looms large in the psyche of residents in many cities around the world. Water is a non-substitutable, essential, finite and fugitive resource. It is the lifeblood of human endeavour. Cities, through global processes such as Agenda 2030 and forums such as ICLEI exchange best practices for achieving water security. These forums also are collective social spaces occupied by civil society organizations who share strategies and tactics, and the private sector, who compete for markets and contracts, promoting patent-protected technologies. It is these groups – states, civil societies, private sectors – coming together who determine who gets what water, when, and where. It is the job of academics to understand the how and why, and of (academic-)activists to fight for equity of access and sustainability of use. Evidence drawn from around the world and over time consistently shows that water flows toward money and power. Outcomes are too-often socially inequitable, environmentally unsustainable and economically inefficient. How to shift existing processes toward improved practices is not clear, but positive outcomes do exist. In this collection, we compare and contrast the challenges and opportunities for achieving urban water security with a focus on 11 major world cities: Bangalore, Beijing, Cairo, Cape Town, Chennai, Istanbul, Jakarta, London, Melbourne, Sao Paulo and Tokyo. Through the theoretical, conceptual and practical insights provided in these case studies, our collection constructively contributes to a global conversation regarding the ways and means of ‘avoiding day zero’.