The emergence of human influence on the ozone layer by the 1960s - Jian Guan; Benjamin D. Santer; Peidong Wang; Qiang Fu; Rolando R. Garcia; Yaowei Li; Kane Stone; Douglas E. Kinnison; Jun Zhang; Gabriel Chiodo; Jean-Francois Lamarque; Susan Solomon (Proceedings of the National Academy of Sciences, 2026)