Science & Technology
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SRD-Source Ranking Database User's Guide and Documentation, Vol. 1 and Vol. 2
Source Ranking Database Documentation
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2020 Regional, State, and Local Modelers' Workshop
The 2020 Regional, State, and Local (RSL) Modelers' Workshop is being held at the Minneapolis Central Library in Minneapolis, MN from May 5-7, 2020. This page provides information on the agenda and registration for the RSL Modelers' Workshop.
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AERMOD Modeling System Development
AERMOD Model System development plans and ongoing research, which is summarized in a series of White Papers.
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AQS PEAT
AQS PEAT
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Keeping Fertilizer in the Ground and Dollars in Farmers’ Pockets
EPA researchers worked to examine the influence of certain crops and nutrient management practices on nitrate leaching into ground water.
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EPA’s EnviroAtlas Publishes Data on Three New Urban Areas, Including Philadelphia and Salt Lake City
Researchers have added fine-scale data and maps for three new urban areas to EnviroAtlas: Philadelphia, PA, Salt Lake City, UT, and Sonoma County, CA, which collectively include over 300 cities and towns not previously covered.
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Meet EPA Scientist Cissy Ma, Ph.D., P.E.
As an EPA research engineer Dr. Cissy Ma thinks big and seeks holistic and sustainable solutions to different environmental problems.
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EPA Scientists Test Non-Targeted Analysis Methods Using Drinking Water Filters
Today, researchers can rapidly search for thousands of never-before studied chemical compounds in a wide variety of environmental, residential, and biological media. This approach is called “non-targeted analysis” (NTA).
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Meet EPA Environmental Engineer and Interdisciplinary Scientist Santosh Raj Ghimire, Ph.D.
Dr. Santosh R. Ghimire analyzes the potential trade-offs of green infrastructure to support more sustainable water systems.
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EPA Science Matters Newsletter: Helping an Ally, and Learning from Disaster
EPA homeland security research helps Japan in the aftermath of the devastating earthquake, tsunami, and radiation leak.
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EPA Science Matters Newsletter: MCnest: Not Just for the Birds (Published January 2014)
Learn about the Markov Chain Nest Productivity Model (MCnest), a model that estimates the potential impact of pesticide exposures on the reproductive success of bird populations.
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Sourcing Urban Soil Contaminants to Improve Cleanup
A science matters story on Urban background contaminants
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EPA Researchers Share Lessons Learned from Citizen Science Research Projects
FAQs about citizen science EHAs
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Meet ORISE Research Fellow Nisha S. Sipes, Ph.D.
Nisha S. Sipes is an ORISE Research Fellow in EPA’s innovative National Center for Computational Toxicology. She and her colleagues are changing the way toxicity testing is done by researching ways to make it faster, more efficient, and more informative
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The Cyanobacteria Assessment Network – Recent Success in Harmful Algal Bloom Detection
EPA scientists and partners are improving harmful algal bloom detection through the use of satellite imagery.
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Science Matters Articles related to Sustainability Research
Find published Science Matters articles about the EPA's sustainability and green practices research.
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Modeling Research Shows How Salty Ocean Air Impacts Ozone Pollution
Did you know that salty air from the ocean’s surface can help to reduce ozone air pollution, particularly in coastal areas?
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EPA Projects Aim to Improve Ozone Models Over Long Island Sound
EPA scientists are using data from a 2018 study with partners where they collected air quality data to investigate ozone formation over the ocean and transport across Long Island Sound to improve air quality models.
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Meet EPA Biologist Haiyan Tong MD, Ph.D.
Meet EPA Biologist Haiyan Tong MD, Ph.D.
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Workshop on Performance Targets for Low-Cost Air Sensors Scheduled for July 16
Workshop on Performance Targets for Low-Cost Air Sensors Scheduled for July 16