 In 2007, Selin became a postdoctoral fellow at the Massachusetts Institute of Technology in the Center for Global Change Science and Joint Program on the Science and Policy of Global Change.Her research centered on atmospheric pollution and human health impacts, as well as continuing to focus on global efforts to regulate hazardous chemicals.In 2010, Selin was appointed as an Assistant Professor at MIT in the Engineering Systems Division and Department of Earth, Atmospheric and Planetary Sciences, and was promoted to Associate Professor in 2015.