From London to Singapore, Los Angeles to Shanghai, around the world cities are organising themselves in new ways to confront the challenge of climate change. In this session we explore which cities across the world are taking the greenest initiatives and showing the most promise. In the aftermath of COVID19 we see new patterns of work and commuting. What is the future of office spaces? How can green buildings and architecture, be a part of developing the materials and designs of the future? How are citizens organising and working in partnership with city government, civil society and business? How is transport changing, both cars (reducing) and public transport (increasing)? How is the concept of public spaces evolving? And how are cities organising amongst themselves to lead climate action internationally? What role do governments, businesses and individuals have in helping to shape a sustainable future for cities?