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"186 Years of Earth Sciences at Penn and the Portraits in the Lobby"
"The biogeochemical cycle of mercury in an era of environmental change"
Natalia Aponte - University of Pennsylvania
Dr. Sarah Willig - Professional Masters of Environmental Studies Program, University of Pennsylvania
Dr. Catalina Pimiento - Swansea University, UK and The Paläontologisches Institut und Museum, University of Zurich, Switzerland