Funded by the National Science Foundation, SpheriCity aims to optimize circularity, from the city up, transforming the linear consumption model of raw material extraction, production, use, and disposal that dominates the global economy. In Phase I of this project, a circularity path was connected and converged across multiple materials and scales in two large metropolitan areas. The newly updated and expanded CAP framework will be used to converge circularity across plastics (exploring alternatives) and the built environment in 11 more cities. Phase II also expands this work by training local implementation partners, and further developing a novel dynamic data and training portal.