Heather Liddell is an Assistant Professor at Purdue University with joint appointments in Mechanical Engineering and Sustainability Engineering & Environmental Engineering. She studies energy and environmental impacts in manufacturing, integrating economy-level and technology-level modeling approaches. Before joining Purdue in 2023, Dr. Liddell was a group leader at the energy consulting firm Energetics, where she worked closely with the U.S. Department of Energy to develop strategies for resource-efficient and decarbonized manufacturing in the United States. She holds BS and MS degrees in mechanical engineering and a PhD in materials science from the University of Rochester and completed postdoctoral training at the U.S. Naval Research Laboratory. As a Harrington Fellow, she looks forward to collaborating with colleagues at the Energy Institute and across UT to advance new energy systems modeling approaches for a rapidly evolving industrial economy.