Miller’s research uses life cycle assessment (LCA) and scenario modeling tools to identify potential unintended environmental consequences of emerging technologies and find design or policy interventions that may lead to sustainable outcomes. She is particularly interested in understanding how consumer behavior patterns can influence the environmental outcomes of products. Her work spans a variety of topics including the food-energy-water nexus, plastic packaging, food waste, refrigeration and air conditioning, the urban-rural sustainability divide, and e-commerce.