Nature SustainabilityHalving global ammonia emissions with cost-effective measuresXiuming ZhangYi SunYujing GaoChen WangXia LiangShu Kee LamShaohui ZhangWilfried WiniwarterHans J. M. van GrinsvenMark A. SuttonDeli ChenBaojing Gu2026-01-02Full textDOI https://doi.org/10.1038/s41893-025-01723-5