Science & Technology

Meet EPA Scientist Havala Pye, Ph.D.

EPA physical scientist Dr. Havala Pye researches air quality, specifically particles from both emissions and those that form in the atmosphere by interactions of gas-phase compounds.

From Challenge & Prize Competition to Test Prototype: The Nitrogen Sensor That Could Change Residential Onsite Wastewater Treatment

The winner of the Advanced Septic System Nitrogen Sensor Challenge has developed a nitrogen sensor that could change residential onsite wastewater treatment.

EPA Researchers Enhance Community Resilience

To help state and local emergency planners think about resilience, EPA researchers developed the Environmental Resilience Tool Wizard.

Study Finds Exposure to Air Pollution Higher for People of Color Regardless of Region or Income

EPA grantees conducted modeling and analyzed EPA data from the National Emissions Inventory for more than 5,000 emission source types for fine particulate matter, or PM2.5.

Air Pollution May Contribute to Diabetes, Particularly Among African Americans, Study Finds

An EPA researcher looked at the associations between indicators of long-term exposure to ambient air pollution and prevalence and incidence of diabetes among African Americans living in the southern state of Mississippi.

Meet EPA Research Ecologist, Cathleen Wigand, Ph.D.

EPA research ecologist Dr. Cathy Wigand works on coastal resiliency, climate adaptation, and wetland restoration and frequently collaborates with local, state, and federal partners in her work. Dr. Wigand started her career with EPA over 25 years ago and h

Celebrating Women’s History Month - Part Two

Learn about some of the EPA women working to protect the environment and check out their advice for people interested in environmental careers.

Answering the Call: EnviroAtlas Team Supports Teachers and Educators during the COVID-19 Pandemic

EPA’s EnviroAtlas team has been helping educators adjust to teaching in the virtual environment.

Meet EPA Scientist Chris Weaver, Ph.D.

EPA scientist Dr. Chris Weaver’s research focuses on climate change science, especially evaluating the specific risks global change poses to air quality, water quality, human health, and ecosystems.

Measuring Air Pollution in Southern California Using Low-Cost Sensors

To assist local and state air quality managers, community groups, and others, EPA is evaluating and developing air sensor technologies and providing information on using and interpreting sensor data.

EPA Leads the Way on Lead Exposure Science and Risk Management

EPA researchers have developed a modeling approach that improves our understanding of the relationship between lead concentrations of various sources (drinking water, soil and dust, food, and air) and children’s blood-lead levels.

Engaging Historically Black Colleges and Universities through Science, Technology, Engineering and Math (STEM) Education and Community Engagement

EPA’s STEM Outreach Program in RTP began in 2004, with the aim of supporting EPA’s mission of protecting human health and the environment by increasing awareness, providing education, and inspiring the public, especially K-12 students.

Meet EPA Researcher Karoline Barkjohn, Ph.D.

EPA researcher Karoline Barkjohn works on understanding and improving data from lower cost air sensors. She is working on several exciting projects, including analyzing data from air sensors across the U.S. to better understand their performance and limita

Urbanization - Wastewater Inputs

Intro to wastewater inputs associated with urbanization, overview of combined sewer overflows, overview of how wastewater inputs can contribute to enrichment or eutrophication, overview of how wastewater inputs can affect reproduction by stream fauna.

Urbanization - Physical Habitat

Introduction to physical habitat changes associated with urbanization, overview of how urbanization can lead to channel enlargement, summary of how road crossings can affect stream ecosystems, summary of how urbanization can alter streambed substrates.

Urbanization - Temperature

This page covers how water temperature changes associated with urbanization, including heated surface runoff can affect stream biota and climate change.

Flow Alteration

Introduction to the flow alteration module, when to list flow alteration as a candidate cause, ways to measure flow alteration, simple and detailed conceptual model diagrams for flow alteration, flow alteration module references and literature reviews.