Beatrice O'Hara of Delaware Geological Survey presented a poster titled "Sediment Carbon Stock, Accumulation Rates and Potential Erosion-Induced Carbon Emissions in the Delaware Bay Tidal Salt Marshes" at "The Earth's Carbon Cycle in the 21st Century: Climate, Ecosystems, and Energy," held April 18 at the Trabant University Center to honor UD alumna Susan Trumbore for winning the 2018 Benjamin Franklin Medal in Earth and Environmental Science.