Tai Lung

Tai Lung is an environmental policy, geospatial data, and environmental justice leader with more than 20 years of experience advancing data-driven solutions to complex environmental challenges. After serving as an Environmental Education volunteer in the Peace Corps, he joined the U.S. Environmental Protection Agency, where he led EJScreen, EPA’s flagship environmental justice mapping tool, until the Office of Environmental Justice and External Civil Rights closed in 2025. He currently serves as Senior Advisor for Federal Data Policy at the Federation of American Scientists and as a Research Scientist at Johns Hopkins University, where he co-leads the Environmental and Health Data Analysis Trust (EHDAT), a nonprofit initiative developing an open, science-based environmental data platform. His work focuses on strengthening public access to environmental data, advancing cumulative impacts science, and building transparent, community-centered data infrastructure that supports research, policymaking, and environmental justice.

The Environmental & Health Data Analysis Trust (EHDAT), founded in 2025, is developing a next-generation environmental and health screening platform to support state, Tribal, and local governments, researchers, community organizations, and the public with reliable, transparent, and scientifically rigorous environmental, health, and cumulative impacts analysis. Led by former staff from EPA’s Office of Environmental Justice and External Civil Rights, EHDAT builds on the strengths and lessons learned from EJScreen and other screening tools while addressing their limitations through improved data, analytical methods, and usability. The modular platform will integrate nationally consistent and locally generated data into a suite of user-friendly mapping and analytical tools that can evolve as new science, datasets, and user needs emerge. By providing a stable, nonpartisan resource grounded in the best available science, EHDAT will help advance environmental and public health decision-making while remaining resilient to changing political conditions. EHDAT is being developed in partnership with the Johns Hopkins University Department of Environmental Health & Engineering, where members of the team are affiliated research scientists.