Drawing upon personal notes and memories, this article reflects on selected moments during the journey of global environmental awareness during the past 50 years. Through its convening power the United Nations, it’s myriad programs and associated organizations, has been the foundational institution. The emergence of the concept of sustainability and the existential crisis of climate change have dramatically altered the landscape during the period. Challenging questions about the governance of global interconnectedness and an agenda of peace and security that considers social inclusion, economic prosperity and environmental stewardship holistically remain a work in progress at Stockholm+50 and beyond.