As the climate and biodiversity crises escalate, our world faces unprecedented times. With the 1.5oC threshold quickly approaching and 75% of emissions coming from the urban built environment (UN Habitat), now is more critical than ever for designers, planners, and advocates to lead a climate positive response through the built and natural environment. Beyond buildings: streets, infrastructure, open spaces and natural systems represent more than 50% of a city’s space. Yet they are often overlooked and considered “in-between” spaces. These places hold vast opportunities for climate and community resilience, emissions reductions, and active biogenic carbon sequestration through nature-based solutions. Planning and urban design, infrastructure, and landscape architecture hold critical levers for improving the mitigation performance of these spaces while unlocking the benefits of protecting from increasing flood risks, heat and air pollution while conserving water and supporting biodiversity, community health and well-being.