Learn the Issues

This page shows all of the pages at www.epa.gov that are tagged with Learn the Issues.

  • Changes over Time

    enviroatlas data

  • Flint Drinking Water FAQs

    FAQs about Flint response

  • Brachionus Leydigii in the Great Lakes

    Information and data on the Great Lakes National Program Office monitoring activities of a new invasive species, Brachionus leydigii.

  • Radiation Protection Science and Tools

    Landing page for Radiation Protection Science & Tools including TENORM, Basics, and tools for calculating dose and risk

  • Radiation Protection Regulations, Guidance and Compliance

    EPA standards set protective limits on the radioactivity in soil, water and air that comes from human use of radioactive elements. EPA issues federal guidance documents with recommendations on radiation protection.

  • Lake Erie Water Quality Data

    EPA and ECCC annually track changes in phosphorus loads to Lake Erie, as well as the in-lake response of harmful algal blooms (HABs) and hypoxia.

  • Radiation Basics

    Radiation can come from unstable atoms or it can be produced by machines. There are two kinds of radiation; ionizing and non-ionizing radiation. Learn about alpha, beta, gamma and x-ray radiation.

  • Protecting Yourself from Radiation

    The concepts of time, distance and shielding will help protect you from radiation. In the case of a radiation emergency, get inside, stay inside and stay tuned.

  • Enforcement Action Protects Shoreline

    Two sections of “living shoreline” along the Lafayette River in Norfolk, Virginia, constructed under an EPA consent agreement with the city, are part of a broader effort to stabilize the banks of a community vulnerable to sea level rise.

  • Radiation Terms and Units

    Different aspects of radiation have their own terms and units and are presented here.

  • Radiation Health Effects

    View basic information about how radiation affects human health, including the concepts of acute and chronic exposure, internal and external sources of exposure and sensitive populations.

  • Radioactive Decay

    Radioactive decay is the emission of energy in the form of ionizing radiation. Example decay chains illustrate how radioactive atoms can go through many transformations as they become stable and no longer radioactive.

  • Radionuclides

    Information about radionuclides and links to additional information about specific radionuclides.

  • Water Chemistry

    How EPA monitors the water quality of the Great Lakes throughout the water column in accordance with the Great Lakes Water Quality Agreement.

  • Thermocyclops Crassus in the Great Lakes

    Information and data on the Great Lakes National Program monitoring activities of a new invasive species, the Thermocyclops.

  • Green Lessons in Class, on Grounds at Philadelphia’s Nebinger School

    EPA and a team of partners are helping the George W. Nebinger School in Philadelphia become a national model for stormwater management and educational programming.

  • Sweet Success at Pennsylvania Plant

    EPA and the Pennsylvania Department of Environmental Protection (PADEP) helped a small treatment plant in Montgomery County find a solution to high nitrogen levels – simply add sugar and stir.

  • Sewer Project Remedies ‘Third World’ Conditions

    An EPA-funded project to process sewage from homes on a West Virginia hillside has resolved what a county health department report described as “Third World” conditions caused by failing or non-existent on-site systems to manage human waste.

  • Community Involvement and Demolition

    Community engagement is important for residential demolitions because they can involve management of harmful materials and they also present opportunities for site reuse.

  • EPA-Funded Technology Seen as Win-Win on Virginia Farm

    A drag hose is an alternative manure application system that has advantages for farms with a large amount of manure to spread.

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