I work on a wide range of topics in biogeochemistry and isotope geochemistry using several different tools. Broadly, my work focuses on better understanding the details of the chemical and biological evolution of Earth and other potentially habitable bodies.  

Currently, I am working to further develop molybdenum and uranium isotope proxies to enable us to better decipher the oxygenation history of Earth's atmosphere and oceans.

I am also involved in a project to better understand nitrogen cycling in the hot springs of Yellowstone National Park using a wide variety of ¹⁵N tracer methods and in situ incubations.

The projects I enjoy the most tend to involve a combination of chemical methods development, physical hardware design and construction, and numerical modeling.