The Max-Planck-Institut für Biogeochemie in collaboration with Friedrich-Schiller-Universität Jena is offering a PhD position for students interested in global biogeochemical cycles. The project will explore the distribution and exchange of elements across Earth’s systems, including the biosphere, geosphere, hydrosphere, and atmosphere. The candidate will conduct independent research, participate in collaborative projects, and contribute to interdisciplinary discussions. Applicants should have a Master’s degree, strong English communication skills, and an interest in interdisciplinary research.