His research interests center on climate and hydrologic processes, how they are preserved in the geologic record, and how human activity affects the sustainability of water resources. His teaching interests include sustainability, environmental science, and environmental isotope geochemistry. K-12 and public outreach programs include the Hot Science Cool Talks Outreach Series and the Scientist in Residence program, which partners STEM graduate-student researchers with K-12 teachers. Current and recent projects include Planet Texas 2050 and the Fourth National Climate Assessment.