| October 14, 2024 | | Philadelphia Red-tailed Hawks on the Benjamin Franklin Parkway 2009-2019 | Speaker Pamela Dimler (Naturalist Photographer) |
| November 11, 2024 | | Identification of Microscopic Fibers | Speaker: Robert Carlton, Ph.D. (Carlton Microscopy and Consulting) |
| December 9, 2024 | | Abolitionist and the Underground Railroad in the Delaware Valley | Speaker: Harold Finnigan, M.S. |
| January 13, 2025 | | From Cameras to Conservation: How Your Clicks Help Protect African Wildlife | Speaker: Meredith S. Palmer, Ph.D. (Princeton University) |
| February 10, 2025 | | Ancestry of T. Rex: A New Tyrannosaurus and its Implications for the Evolution of Tyrannosaurs | Speaker: Steven Jasinski, Ph.D. (Harrisburg U of Science and Technology) |
| March 10, 2025 | | A New Frontier of DNA/RNA Sequencing -- What are we learning? | Speaker: E. Loren Buhle, Jr. Ph.D. (DNAnexus) |
| April 14, 2025 | | From Somersetshire to Darby: Uncovering Family History through Delware County Historical Society | Speaker: Paul J. Hewes, Jr. M.S. (Delaware County Historical Society) |
| May 12, 2025 | | Making the World's Smallest Robot | Speaker: Mark Miskin, Ph.D. (University of Pennsylvania, GRASP Lab) |
| October 16, 2023 | | The Effect of Human Lighting on Migratory Birds | Speaker: Jeff Buler, Ph.D. (University of Delaware) |
| November 13, 2023 | | Coastal Ghost Forests | Speaker: LeeAnn Haaf, Ph.D. (Partnership for the Delaware Estuary) |
| December 11, 2023 | | Stories of Uncovering Radioactive Mysteries in the Delaware | Speaker: William Belanger, Ph.D. (Nuclear Physicist - retired) |
| January 8, 2024 | | Tales of Tessellations | Speaker: Alissa Crans, Ph.D. (University)Loyola Marymount |
| February 12, 2024 | | Scam or Democracy’s Savior? A mathematician’s perspective on Ranked Choice Voting | Speaker: Adam Graham-Squirer, Ph.D. (Highpoint University) |
| March 11, 2024 | | Green Chemistry – The Promotion of Green and Sustainable Practices in Chemistry | Speaker: Loyd Bastin, Ph.D. (Widener University) |
| April 8, 2024 | | Minerals, Knowledge Production, and Colonial Legacies | Speaker: Selby Hearth, Ph.D. & Carrie Robbins, Ph.D. (Bryn Mawr College) |
| May 13, 2024 | | From Dark Chocolate to Red Wine – The Fascinating World of Flavonoids | Speaker: Anna Sigmon, Ph.D. (Penn State U. Brandywine) |
| October 10, 2022 | | Changing oceans: Anthropogenic impacts on the early development of marine organisms | Speaker: Karen Chen, Ph.D. (Swarthmore College) |
| November 14, 2022 | | Mathematics and Art | Speaker: Samantha Pezzimenti, Ph.D. (Penn State Brandywine) |
| December 12, 2022 | | The energetic impacts of disease: a case study of white-nose syndrome in southeastern bats | Speaker: Catherine Haase, Ph.D. (Austin Peay State University) |
| January 9, 2023 | | Space Weather and Solar Storms: Updates from the NOAA/NWS Space Weather | Speaker: Shawn Dahl (Senior Space Weather Forecaster at the Space Westher Prediction Center, Boulder CO) |
| February 13, 2023 | | A climate and ocean record, from plankton to fossils | Speaker: Claire Routledge, Ph.D. (University of of Kiel/Germany) |
| March 13, 2023 | | What tilts planets' orbits? | Speaker: Eric Jenson, Ph.D. (Swarthmore College) |
| April 17, 2023 | | Zero-Waste Initiatives, from Transition Town Media> | Speaker: Transition Town Media Committee |
| May 8, 2023 | | Why are there so few women in the history of science? One wrong and three right answers | Speaker: Roger Turner, Ph.D. (Science History Institute) |
| October 18, 2021 | | COVID-19 and Updates for Pennsylvania | Speaker: Denise Johnson, M.D. (Acting Physician General for the PA Dept of Health) |
| November 8, 2021 | | The Next Generation Space Telescope - The Next Astronomical Revolution | Speaker: Tim Lawlor, Ph.D. (Dept of Physics, Penn State Brandywine) |
| December 7, 2021 | | 2021 North Atlantic Hurrican Season | Speaker: Kim Wood, Ph.D. (Dept of Meterology at Mississippi State University) |
| March 15, 2022 | | Drawing Irrational Numbers: What is Pi | Speaker: Melanie Fraser, (Dept of Mathematics, Southern New Hampshire University) |
| January 10, 2022 | | Mathematical Devices at the Smithsonian - An Insider's View | Speaker: Amy Schell-Gellasch, Ph.D. (Dept of Mathematics at Eastern Michigan University) |
| February 19, 2022 | | Geology of Costa Rica | Speaker: Mr. Russell Losco (Lecturer at West Chester University and Delaware County Community College) |
| April 11, 2022 | | Native Spring Ephemerals | Speaker: Claire Routledge, Ph.D. (University of of Kiel/Germany) |
| May 9, 2022 | | Legacy Collection Sites at the Mid-Atlantic Ridge | Speaker:Laura Guertin, Ph.D. (Penn State Brandywine) |
| October 2020 | | Ahab's Rolling Sea: Tracing Our perceptions of the Ocean through Moby-Dick | Speaker: Richer J King , Ph.D. (Sea Education Association) |
| November 2020 | | | |
| December 2020 | | Journey to the Moon: from Apollo to Artemis and why the Moon rocks | Speaker: Juliane Gross, Ph.D. (NASA Johnson Space Center, Rutgers University) |
| January 2021 | | The Artic Fire Regime - Current Status, Future Implications, and Your Role as a Citizen(-Scientist) | Speaker: Jessica McCarty, Ph.D. (Miami University, Ohio) |
| March 2021 | | Eating Insections .. on Purpose: Moving Towards Sustainable Foods | Speaker: Emily Moscato, Ph.D. (Saint Joseph's University (PA)) |
| April 2021 | | The American Chestnut Tree, Conservation and Restoration | Speaker: Daniel O'Keefe, (PA Chapter of the American Chestnut Foundation) |
| March 25, 2021 | | Overview of Project Drawdown Ecochallenge | Speaker: Matt Scott |
| April 29, 2021 | | Project Drawdown: Electricity Sector | Speakers: Derek Hall (Penn State) and Alon Abramson (Phila Energy Authority) |
| May 27, 2021 | | Project Drawdown: Food, Agriculture and Land Use | Speaker: Alexandre Martinez (UC Irvine) and Siobhan Fathel (Penn State) |
| June 24, 2021 | | Project Drawdown: Industry Sector | Speakers: Jay Regan, (Civil and Env Eng, Penn State) and Ece Topuzlu (Biochemist, Eurofins Scientific) |