Magmatism is one of the dominant geological processes on terrestrial planets, and serves as a key interface between planetary interiors and exteriors. My research relates magmatism to its broader tectonic and Earth system implications, from geochemical change to ecological stress. I combine sample-based analyses with other approaches including field work, computational simulation, and spacecraft data to investigate the role that solid earth processes have played in shaping surface environments in our solar system. Current projects explore fluvial erosion on Mars and Titan and the climate effects of volcanism across geologic history.