My research is in the area of Aqueous and Sedimentary Geochemistry. I use tools such as elemental analysis, stable and radiogenic isotope geochemistry, and gas chemistry to address problems in hydrochemistry, diagenesis, geomicrobiology, and geothermal processes. I collaborate with microbiologists to integrate molecular genetics into our geological picture of aqueous environments. I collaborate with geologists and geophysicists to provide a context for my investigations. I engage in geoscience and STEM outreach to the public, as well as run programs to increase participation by underrepresented groups.