My research straddles the boundary of biology and geology. I am interested in understanding how the presence of life on earth influences Earth’s climate in the present and in the past. My research on the influence of life on modern climate focuses on the pathways that produce and remove the greenhouse gas methane from the atmosphere. My research on past climates seeks to understand how the evolution of novel biochemical pathways affected paleoclimate and influences paleoclimate reconstructions. Additionally, my research seeks to understand how the alteration of the physical environment by life can be used to search for life elsewhere in the universe. I am currently a postdoctoral research associate at the University of Arizona.