Science Topics

EPA is one of the world’s leading environmental and human health research organizations. Science provides the foundation for Agency policies, actions, and decisions made on behalf of the American people. Learn more about research at EPA and environmental measurements and modeling, and the wealth of environmental data shared by EPA.
Science
Data and Tools
- Air Sensor Toolbox
- CompTox Chemicals Dashboard
- Ecotoxicology Database (ECOTOX)
- Enviro Atlas
- Environmental Dataset Gateway
- EPA Open Data portal
- EPA Science Models and Research Tools (SMaRT) Search
- ExpoBox (A Toolbox for Exposure Assessors)
- Integrated Risk Information System
- Report on the Environment: National Trend Data
- Water Data and Tools
- Water Research: EPANET
Latest Science Matters Articles
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EPA Scientist Serves as Air Resource Advisor on the McKinney Fire Modeling Smoke and Air Quality
EPA scientist Dr. John Iiames traveled to Yreka, California, to lend his expertise in air quality and smoke modeling and serve as an Air Resource Advisor to the response team.
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Meet EPA Research Biologist John S. Iiames, Ph.D.
John S. Iiames is a research biologist with expertise in environmental remote sensing and geospatial science. He works on the investigation of environmental indicators linked to environmental conditions and human health. This research provides the environ
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Research Reflections and Looking to the New Year
Read reflections from EPA researchers on their work in 2022.