Finding a safe operating space for humankind requires understanding how the Earth system reacts to environmental perturbations. Motivated by this need, the Department of Earth Sciences at the University of Southern California seeks exceptional researchers for a tenure-track faculty position(s) at the assistant professor level in the area of global environmental change (broadly defined). We welcome applications from scholars investigating environmental perturbations and their effects using observations (in situ or remotely-sensed), modeling, theory, and/or experiments. We are particularly interested in candidates studying the atmosphere, hydrosphere, cryosphere and/or biosphere, including their interactions and evolution, as well as their connections to the solid Earth. Evaluation of applications will begin on December 20 2020, and continue until the position is filled.