When David Pfotenhauer decided to pursue a PhD at CU Boulder, he knew that he wanted to specialize in an application-based science that would allow him get out into communities and use his knowledge to address public issues. As a current doctoral student in Mechanical Engineering, David joined CU Engage's 2016-17 cohort of Community-Based Research (CBR) Graduate Fellows. He became the newest member of an ongoing research project, a collaboration between CU Boulder and the Denver-based organization Taking Neighborhood Health to Heart (TNH2H). He began working to further the research that his colleague, CU Boulder CBR Fellow (2015-16) and Civil Engineering doctoral student Ashley Collier, had begun the year before in response to community concerns about air quality, contaminants and environmental health. David’s role in the project is to investigate air quality and radon levels in northeast Denver, one of the areas in which TNH2H members live.