Earth's critical zone (CZ) is the uppermost layer of Earth's continents, which supports ecosystems and humans alike. CZ science aims to understand how interactions among rock, soil, water, air, and terrestrial organisms influence Earth as a habitable system. Thus, CZ science provides the framework for a holistic-systems approach to teaching Earth surface and environmental science, especially related to environmental sustainability. Participants in this webinar will be introduced to the basic concepts of critical zone science and observatories as well as a transdisciplinary full-semester, university curriculum that introduces upper-division students to CZ science. The course emphasizes how a CZ framework is appropriate for teaching concepts across scientific disciplines, concepts of environmental sustainability, and the usefulness of CZ science for considering humanity's grand challenges. Webinar topics will include a background and history of CZ science, and a focus on units from within three of the seven modules that comprise the course: importance and role of soil in the CZ Background module; movement of energy and nutrients in the Geochemistry and Biogeochemistry module; and, agricultural impacts and the research proposal peer review process in the Humans in the CZ module. The webinar will conclude with consideration of examples of contemporary Critical Zone Science results and future opportunities.
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