Dr. Hanna Breunig is a Research Scientist and Deputy-Head of the Sustainable Energy and Environmental Systems Department in the Energy Analysis and Environmental Impacts Division. She holds a secondary joint appointment in the Earth Systems and Society Domain in the Climate and Ecosystem Science Division. Hanna specializes in techno-economic analysis, process modeling, market analysis, and environmental and human health impact assessment (life-cycle assessment) of emerging energy and negative emissions technologies. These include circular economy, bioenergy and biochar, enhanced weathering, and gas (H2, CO2, CH4) capture, production, storage, utilization, and management technologies. She holds a B.Sc. in Environmental Engineering from Cornell University and an M.Sc. and Ph.D. in Civil and Environmental Engineering from UC Berkeley.