Science & Technology

Frequently Asked Questions About Climate Change

Answers to some frequently asked questions about climate change.

Basics of Climate Change

The earth's climate is changing. Multiple lines of evidence show changes in our weather, oceans, ecosystems, and more. The buildup of greenhouse gases in our atmosphere and the warming of the planet are responsible for changes.

Environmental Response Laboratory Network Programs and Tools

ERLN is focused on building capacity and capability in four primary areas: biological, chemical, radiological, and water.

Environmental Response Laboratory Network Membership

Member laboratories must meet core requirements including quality systems, policies and procedures, sample and data management, and analytical capabilities. Benefits include training and exercise opportunities, information sharing and technical support.

Environmental Sampling in Henry County, Missouri

EPA Region 7 reviewed a scanned copy of a Jan. 7, 2025, report, received by EPA on Jan. 23, 2025, and provided background, water & sediment/soil sampling data & analysis, and conclusions from sampling in Montrose and Clinton, Missouri, and Montrose Lake.

Harmful Algal Blooms Research

Research related to harmful algal blooms and cyanobacteria. Covers toxicology, ecology, epidemiology & health effects, drinking water treatment, and monitoring & remote sensing research.

Agenda and Recordings for the 17th Annual EPA Drinking Water Workshop (Virtual)

Online agenda and session recording.

Advanced Nutrient Monitoring

EPA is studying innovative technologies that will measure nutrient pollution in the air and water using satellites and portable and ground remote sensors as well as measurement and model data.

Environmental Indicators in Aquatic Surveys

This page details the environmental indicators used in National Coastal Condition Surveys and some other aquatic surveys.

Harmful Algal Blooms & Drinking Water Treatment

Covers harmful algal bloom and cyanobacteria research in relation to drinking water treatment

Harmful Algal Blooms Mitigation and Treatment Research

Overview of EPA's research on HABs mitigation and treatment

Fraudcast: Social Media Scams

Podcast: Fraudcast: Social Media Scams

Webinar: Electricity Options for Remote Location or Low Landfill Gas Flow

LMOP webinar on December 6, 2023 about onsite end uses of landfill gas electricity.

Headquarters Frequently Requested Records

Frequently requested FOIA related documentation.

Virginia Underground Injection Control (UIC) permits

Underground Injection Control (UIC) permitted facilities in Virginia

Next Generation Emission Measurement (NGEM) Research for Fugitive Air Pollution

EPA is researching next generation technologies to detect and correct unanticipated emissions of air pollutants from leaks, industrial processes, and other sources.

Base Closure in New Mexico

Base closure information about Fort Wingate Depot Activity (FWDA)

EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026  

Release Date: December 4, 2025

Computational Toxicology and Exposure APIs: Clients

Client API packages have been developed to support access to the Computational Toxicology and Exposure APIs (CTX APIs)

Designation and NAAQS Information Related to PM-2.5 (2012 Standard)