Conveners: Rosemary J Knight, Stanford University, Stanford, CA, United States, Kristina Keating, Rutgers University Newark, Earth and Environmental Sciences, Newark, NJ, United States, Anja Klotzsche, Agrosphere (IBG-3), Institute of Bio- and Geosciences, Forschungszentrum Jülich, Juelich, Germany, Katharine Maher, Stanford University, Department of Geological Sciences, Stanford, CA, United States, Daniella Rempe, University of California Berkeley, Berkeley, CA, United States and Kamini Singha, Colorado School of Mines, Golden, CO, United States