Jennifer Sass brings to her job a highly specialized expertise in U.S. chemicals policy. Much of her work is focused on understanding and explaining the science behind toxic chemical regulation and on advocating for regulations that are consistent with science, health policy, and environmental law. She frequently provides testimony and scientific briefings for members of Congress and federal advisory committees and is a lecturer at George Washington University’s department of environmental and occupational health. She has a master’s degree and a Ph.D. in anatomy and cell biology from the University of Saskatchewan and has done postdoctoral work in toxicology at the University of Maryland. She is based in Washington, D.C.