Nature SustainabilityDeltaic freshwater scarcity driven by unsustainable groundwater-fed irrigationAugusto GetiranaNishan Kumar BiswasSujay KumarWanshu NieShahryar AhmadFadji MainaNazmus SakibMd Sazzad HossainRobin Kumar Biswas2025-05-16Full textDOI https://doi.org/10.1038/s41893-025-01566-0