More than half the world’s population now live in urban areas. The figure is projected to reach two-thirds by 2050. Megacities of more than 10 million people will be the economic powerhouses driving future global gross domestic product (GDP). However, climate change impacts and extreme weather events are increasingly disrupting critical systems, escalating operating costs and funding gaps, and having other adverse spill-over effects on societies and economies across the world. The G20 is well poised to provide a roadmap for mainstreaming resilience into urban infrastructure development and planning. Cooperation with regional organisations will be crucial to forge effective partnerships, share knowledge and expertise, and leverage innovative financing mechanisms to deliver tangible outcomes. This Policy Brief explores the role of strategic foresight to build long-term resilience and operationalise the G20 Action Agenda on Adaptation and Resilient Infrastructure.1
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