Humanity interacts with the dynamics of the biosphere in new ways. We have expanded from a small world on a large planet to a large human world on a small planet. Environmental issues have become issues about prosperous development of human societies, recognizing that humans are part of and fundamentally dependent on the capacity of the biosphere to sustain development and wellbeing. The work will focus on regional-scale analyses and collaboration with researchers of the South African Programme of Ecosystem Change and Society (SAPECS), writing articles on social-ecological systems and resilience, and working on a book Biosphere Stewardship.