John Tracey is a Ph.D. candidate in geosciences at Princeton University, where his research interests span oceanography, microbiology, and environmental science. He is currently interested in understanding the biogeochemistry of the microbes involved in the marine nitrogen cycle. After graduation, he hopes to apply the skills and knowledge gained in his Ph.D. to contribute to creating environmental policies that address the current environmental challenges faced by humanity.  Before starting graduate school, he graduated with honors from Fordham University with a double major in biology and theology and then spent a year studying whooping cough biochemistry as a post-baccalaureate fellow at the National Institutes of Health.  He enjoys running, hiking, gardening, reading novels, and is an avid guitarist.