ABSTRACT Nature As Discourse: A Co-Evolutionary Systems Approach to Art and Environmental Design by Susannah Hays Doctor of Philosophy in Interdisciplinary Studies University of California, Berkeley Professor Galen Cranz, Chair Transdisciplinarity, an international education movement that explores pathways to a coherent epistemology beyond all disciplines, seeks to become a sustaining vital force in human development. To do so, it needs to be complemented by a branch of epistemology called epistemics or self-knowledge. Only if co-evolutionary phylogenetic principles of human-brain and autonomic nervous system functioning are included in transdisciplinarity's model can individuals experientially evolve to the levels of reality the model entails. An actual, "true to life," transdisciplinary education teaches isomorphic qualities intrinsic to perception, pattern mapping, language, and aesthetic (non-directive) skills. Curricula utilizing these educational tools will result in indispensable, creative learning environments. A trajectory not yet explored in other literature on Transdisciplinarity is an emphasis on cross-cultural research in human- brain and autonomic nervous system dynamics. Three key understandings that guide human biological evolutionary processes toward higher levels of consciousness are Paul MacLean's triune-brain neuroethology, Stephen Porges' Polyvagal Theory of emotions, and G. I. Gurdjieff's three-centered self-study practice. Each chapter describes a non-profit organization whose goal is to raise humanity's normative level of participation in environmental sustainability. These organizations demonstrate how Transdisciplinarity can recalibrate human evolution, if the educational movement synthesizes the autonomic/cognitive forces within Homo sapiens' biological organization.