In 2050, 80% of the world’s population will live in cities that will look far different than those of today. That growth represents a 43% increase from current levels. There are a multitude of decisions that need to be made regarding city planning, new and existing infrastructure, and food, health, and energy systems, among others. Do we have the necessary data and tools to plan for the changes needed, and secure financing, knowing these are long-term investments? What evidence and information is needed at the local level to lead the way to green resilient, vibrant cities of the future? Are there special considerations for conflict/post-conflict environments and those focused on disaster relief?