February 21, 2024 Kellner, E., and D.A. Martin (2023) Learning from past coevolutionary processes to envision sustainable futures: Extending an action situations approach to the Water-Energy-Food nexus, Earth System Governance 15: 100168. Home ยป Kellner, E., and D.A. Martin (2023) Learning from past coevolutionary processes to envision sustainable futures: Extending an action situations approach to the Water-Energy-Food nexus, Earth System Governance 15: 100168.