Invited Talks & Keynotes
Dr. Frey has delivered over 240 invited talks delivered at prestigious universities, national academies, government agencies, and international conferences. These underscore Dr. Frey’s standing as a leading expert and thought leader on a global scale. These presentations extend his published work by enabling him to engage directly with diverse audiences, transferring knowledge from his research to policymakers, students, and other experts. The range of topics, from technical details of vehicle emissions to high-level discussions on environmental justice, climate change, and the role of science in policy, showcases his ability to bridge the gap between deep technical expertise and strategic public discourse.
Selected Examples from the last ten years:
“Measurement of Transport Microenvironment Air Pollutant Exposure Concentrations in Hong Kong,” University of Surrey, Guildford, United Kingdom, March 9, 2015.
“Measurement and Modeling of Real-World Onroad Vehicle Activity and Emissions,” 2015 Warren Lecture Series, Department of Civil, Environmental, and Geo- Engineering, University of Minnesota, Minneapolis, MN, October 16, 2015.
“Uncertainty in Emission Estimates,” Greenhouse Gas and Inventory Center, Seoul, Korea, December 6, 2015.
“Energy and Environmental Aspects of Sustainable Mobility,” at IV Seminário Internacional Mobilidade e Transportes: Pensado as Cidades do Futuro, Brasilia, Brazil, October 24, 2016 (Via Webinar).
“Trends in Emissions of and Exposure to Air Pollution from Vehicles,” Institute for the Environment, University of North Carolina, Chapel Hill, NC, November 1, 2017.
“Exposure to Air Pollution and Health Implications,” Regional Air Quality Management Forum, Hong Kong University of Science and Technology, Hong Kong, November 20, 2017.
“Trends in Onroad Transportation Energy and Emissions” The 48th Annual A&WMA Critical Review, 111th Annual Conference and Exhibition, Air & Waste Management Association, Hartford, CT, June 26, 2018.
“Trends in Onroad Transportation Energy and Emissions,” Department of Civil Engineering and Institute of Transport Studies, Hong Kong University, July 20, 2018
“Measurement and Modeling of Human Exposure to Air Pollution,” Invited Keynote Presentation, 2019 International Symposium on Air Quality and Health, Chang Yung-Fa Foundation International Convention Center, Taipei, Taiwan, January 30, 2019.
“Measurement and Modeling of Onroad Vehicle Air Pollutant Emissions and Exposure,” Invited Seminar, McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, February 12, 2019.
“Recent Developments in the Scientific Review of the National Ambient Air Quality Standards for Particulate Matter,” Particulate Matter: Spotlight on Health Protection, Bay Area Air Quality Management District, San Francisco, CA, October 28, 2019.
“Measurement and Modeling of Exposure to Air Pollution,” Korean Society for Atmospheric Environment Annual Conference (via webinar), October 23, 2020.
“Observations Regarding Air Quality Science and Policy,” Department of Preventive Medicine, University of Southern California, December 4, 2020 (virtual).
“High Resolution Air Quality Modeling to Support Environmental Justice,” Keynote, 20th Annual CMAS Conference, Chapel Hill, November 1-5, 2021.
“Role of Sensors and Data in an Integrated Transportation and One Health Approach,” Keynote, PEMS 2022, 11th Annual International Conference: Moving Towards Onboard Sensing, Analysis, and Reporting (OSAR), March 17-18, 2022, Riverside, California.
“A Vision for Research on Cumulative Impacts at the U.S. Environmental Protection Agency,” SETAC North America 43rd Annual Meeting, Society for Environmental Toxicology and Chemistry, Pittsburgh, PA, November 13-17, 2022.
“EPA Research to Develop Science to Inform Decisions,” Carnegie Mellon University, Pittsburgh, PA, November 16, 2022
Keynote Session: Linkages Across Cumulative Risk, Environmental Justice, and Climate Change, Society for Risk Analysis, Tampa, FL, December 6, 2022.
“Air Quality Research at the Nexus of Climate Change and Environmental Justice,” Keynote Address, 47th Annual Air & Waste Management Association Information Exchange, Durham, NC, December 7, 2022.
“Systems Approaches to Research at the United States Environmental Protection Agency,” EHE Grand Rounds Seminar, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, May 10, 2023.
“Linking Exposure Science to Community Health and Wellbeing,” Invited Plenary Presentation at International Society of Exposure Science, 33rd Annual Meeting, Chicago, IL, August 29 2023.
“Advancing Systems Approaches to Environmental Research at the U.S. Environmental Protection Agency,” Invited Seminar, Department of Systems Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA, September 29, 2023.
“EPA’s Ecological Research to Advance the Science of Cumulative Impacts,” Invited Presentation, SETAC North America 44th Annual Meeting, Louisville, KY, November 15, 2023.
“Expanding Our Understanding of PFAS,” Invited Plenary Presentation, AWMA PFAS Meeting, Air & Waste Management Association, Raleigh, NC, January 23, 2024.
“Developing a “Red Book” for Cumulative Impacts,” National Academies of Sciences, Engineering, and Medicine (NASEM), Washington, DC, July 22, 2024.
“Environment, Energy, and Livable Communities: Connecting the Dots through Research,” Keynote Presentation, Transportation Symposium on Environment, Energy, and Livable Economies, Transportation Research Board, Denver, CO, August 25–28, 2024.
“The Role of Scientific Evidence to Information Decisions to Protect Human Health and the Environment: Examples Based on the National Ambient Air Quality Standards,” Environmental Metrology & Policy Program, Georgetown University, Washington, DC, November 14, 2024 (virtual).
“Developing and Translating Science to Inform Decisions to Protect Public Health and the Environment”, 2025 Meeting of the Association for Environmental Engineering and Science Professors, Duke University, Durham, NC, May 22, 2025, Invited Plenary Presentation.
“Fostering Collaboration for Environmental Resilience,” 118th Annual Conference & Exhibition, Air & Waste Management Association, Raleigh, NC, June 9-12, 2025, Invited Keynote Presentation and Panel.
“Methods and Applications for Quantifying Variability in Human Exposure to Urban Air Pollution”, Division of Environment and Sustainability, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, June 30, 2025. seminar