November 20, 2023 Anderies, J.M., J.D. Matthias, and M.A. Janssen (2018) Knowledge infrastructure and safe operating spaces in social-ecological systems. Proceedings of the National Academy of Sciences USA. Home » Anderies, J.M., J.D. Matthias, and M.A. Janssen (2018) Knowledge infrastructure and safe operating spaces in social-ecological systems. Proceedings of the National Academy of Sciences USA.