Enhanced rock weathering and other techniques for removing carbon dioxide from the atmosphere
Novel isotopic signatures of biogeochemical cycling, including iron, chromium, lithium and magnesium, and the response of biogeochemcal cycles to global environmental change
Exploration for new sources of metals and elements critical for emerging green technologies, including lithium and the rare earth elements
Research interests include the study of past climates, in particular from varve archives in freshwater and marine environments, the mineralogy of fine-grained clay-rich sediments, and the application of electron microscopy techniques to archaeological materials.