Biogeochemical cycling is critical to understanding how the oceans, atmosphere, biosphere, and soils physically and chemically interact to modulate climate and the enviroment we live in. Of interest are the roles of biogeochemistry in nutrient cycling in terrestrial and marine ecosystems, physical and chemical weathering, kinetics of mineral dissolution and growth, element transport in the oceans, alteration of the crust, hydrocarbon formation and degradation, and soil ecosystems. Biogeochemistry also has societal applications in the form of carbon sequestration, agriculture, environmental remediation, and energy. At Rice, biogeochemistry has lent itself well to inter-departmental collaborations. Such collaborations include the biochar initiative and the Keck Foundation-sponsored biosensor group.