PNASNature-based solutions for urban sustainabilityElizabeth M. CookYeowon KimNancy B. GrimmTimon McPhearsonPippin AndersonHarriet BulkeleyMarcus J. CollierLoan DiepJordi MoratóWeiqi Zhou2025-07-14Full textDOI https://doi.org/10.1073/pnas.2315909122