The nexus between urban sustainability measures and the re-conception of how communities are built in order to respond to increased environmental risk is complicated by the regional specificity of the risks at stake. In the US, with its diverse cultural landscape, this is particularly pronounced. How to build an electrical grid that runs on renewables but also accounts for drought and fire in the Mountain West, temperature extremes in the South and storm surge in the North East? Within the context of a Columbia University course taught in Fall 2020, students considered the potential synergies between sustainability and resilience agendas on urban infrastructure - energy, transportation, wastewater treatment, food systems, housing and public space. This brief talk will review and compare findings from coastal New Jersey, Chicago's South Side and the Ballona Creek area of Los Angeles.