Faculty
Avner Vengosh is a Distinguished Professor of Environmental Quality at Duke University. He is currently the Chair of the Division of Earth and Climate Sciences at the Nicholas School of the Environment. Professor Vengosh and his team have studied the energy-water nexus, conducting pioneer research on the impact of hydraulic fracturing and coal ash disposal on the quantity and quality of water resources in the U.S. and China. He has also investigated the sources and mechanisms of water contamination in numerous countries across the globe. Currently, his team is engaged in studying phosphate rocks and fertilizers impact on the environment, as well the environmental effects of lithium mining and other critical raw materials. He is a Fellow of the Geological Society of America (GSA) and International Association of Geochemistry (IAGC). In 2019, 2020 and 2021 he was recognized as one of the Web of Science Highly Cited Researchers. He serves as an Editor of GeoHealth and on the editorial board of Environmental Science and Technology. He has published 177 scientific papers in leading international journals. His recent cross-disciplinary book “Water Quality Impacts of the Energy-Water Nexus” (Cambridge University Press, 2022) provides an integrated assessment of the different scientific and policy tools around the energy-water nexus.
For communications: vengosh@duke.edu
Current Graduate Students
Hannah Wudke (2024 – ) Hannah received her undergraduate degree in Geology from Miami University (Oxford, OH), as well as an Environmental Science Co-major and Social Justice Studies minor. At Miami, she used electron microscopy to conduct mineralogical and geochemical investigations of talc-derived consumer products, such as baby powder and cosmetics, in the context of asbestos and/or heavy metal contamination. At Duke, she will pursue environmental geochemistry research with environmental health applications. Hannah.Wudke@duke.edu
Robert Hill (2021 – ) Robert is interested in the diverse applications of isotope geochemistry. He received his undergraduate degree from the University of Illinois at Urbana-Champaign where he double-majored in geology and earth, society, & environmental sustainability. While at Illinois, he used isotope geochemistry to characterize coal ash leachate and to investigate the extent of environmental impact of coal ash ponds in Illinois. Post-undergrad, he worked as an environmental geologist for SCST before joining the Vengosh Lab at Duke University. His current research focuses on the isotope geochemistry of phosphate rocks and fertilizers, for reconstructing paleo-ocean conditions of phosphate rock formation and as potential tracers of trace metals associated with fertilizer application. Robert.Hill@duke.edu
Gordon Williams (2020 – ) Gordon received his undergraduate degree in Earth Science focusing on geohydrology from the University of California, Santa Barbara. While at UCSB he developed a passion for geochemistry and the diverse applications of isotopes. Post graduation he worked in a rock physics lab at Stanford investigating the chemistry and structure of Roman marine concrete. At Duke, he merges his interests in geochemistry with those of water quality and applies this to investigating the potential environmental impacts of lithium mining. His current research looks at the trace metals associated with lithium mining and deposits and uses isotopes to fingerprint the origin of these metals in natural waters. gordon.williams@duke.edu
Current Undergraduate Students
Grace Hall (2023 – ) Grace is an undergraduate student (class of 2025) with a major in Earth and Climate Sciences and a minor in Chemistry. She is interested in mineralogy and environmental chemistry and is currently working on a thesis project evaluating the potential of environmental contaminants associated with mining of critical raw materials ores and associated tailings materials.
Current Researchers
Jiyoung Park (2024 – ) Jiyoung Park graduated with a Master of Environmental Management from the Nicholas School in 2024. Her research focuses on life cycle analysis (LCA) of electric vehicles (EVs) and internal combustion engine (ICE) vehicles, with a focus on assessing the water and carbon footprints from critical mineral extraction to road use. Her work aims to evaluate the environmental impacts of transitioning to electric mobility.
Former PhD Students
- Jennie Harkness (PhD, 2013-2017) Identifying water contamination from fossil fuel development using geochemical and isotopic fingerprints. Currently: Hydrologist at USGS CA Water Science Center
- Brittany Rose Merola (PhD, 2010-2014) Biomarkers of Exposure: Arsenic Concentrations in Keratin in Populations Exposed to Arsenic in Drinking Water. Currently: Hydrologist at USGS NJ
- Nathaniel Warner (PhD, 2009-2013) Tracing hydraulic fracturing fluids and formation brines using boron, radium, and strontium isotopes. Currently: Associate Professor, Penn State University
- Laura Ruhl (PhD, 2008-2012) The geochemistry and isotopic characterization of coal ash and its impact on the environment. Currently: Hydrogeology Section Chief at USGS AR Lower Mississippi-Gulf Water Science Center; Formerly: Associate Professor, University of Arkansas at Little Rock
- Hadas Raanan (PhD, 2005-2011). Radium isotope geochemistry as a tracer for groundwater-surface water interaction. Currently: Researcher at Mekorot LTD. Israel
- David Vinson (PhD, 2005-2011). The impact of salinity and water chemistry on radium mobilization in groundwater systems. Currently: Associate Professor, University of North Carolina in Charlotte
Former MEM Students
- Jun Hu (MEM, 2023) Currently: PhD Student at Princeton University
- Rachel Weinberg (MEM, 2021) Currently: Stormwater Consultant at Raftelis
- Meghan Nicholas-Harper (MEM, 2018) Currently: Director of Water Resources at Nuveen
- Kristen McKinley (MEM, 2018) Currently: Lead Health Scientist at ICF
Former Researchers and Visiting Students
- Marija Petrović (Fulbright, 2023-2024) Currently: PhD Student at Ruđer Bošković Institute, Croatia
- Tayel El-Hasan (Fulbright, 2023-2024) Currently: Professor at Mutah University
- Tewodros Godebo (Postdoctoral Reseacher, 2010-2017) Currently: Assistant Professor at Tulane University