This resource provides an overview of polar bears in the arctic. The content includes a look at polar bear habitat, population, diet, and more. Several photographs of polar bears are also included.

This online brochure focuses on particulate matter in the atmosphere and its health effects.

This site from the North Carolina Department of Environmental Health discusses the impact of Safe Drinking Water Act on wellhead protection, wellhead guidelines, delineation, management, contingency plan, and public involvement.

Article provides an actual summary of Silkwood's exposure to plutonium and the analysis of her findings at Los Alamos.

This site from MayoClinic.com provides great information on food-borne illness. The article is somewhat brief, but provides an excellent overview on the subject.

A fact sheet on the Chernobyl accident: how many were exposed, where they were, the relocation efforts, amount of radiation received, and health problems associated with the accident.

This brief article gives an overview of E. coli including what it is, how it spreads, how it is treated, and how to prevent it.

When Hurricane Katrina hit the Gulf Coast area, NIEHS scientists and physicians were sent to assist with relief efforts. Provided is a helpful packing list and useful suggestions so you can help your family in case of an emergency or to...

[Free Registration/Login may be required to access all resource tools.] How polluted groundwater is cleaned up.

[Free Registration/Login may be required to access all resource tools.] How polluted groundwater is cleaned up.

[Free Registration/Login may be required to access all resource tools.] How groundwater can be polluted.

[Free Registration/Login may be required to access all resource tools.] With so many species of bacteria, some are bound to be harmful. Harmful bacteria can make you sick. They can also ruin food and be used to hurt people. Learn more...

[Free Registration/Login may be required to access all resource tools.] Describes the air pollutants released from fossil fuels, biomass burning, and volatile organic compounds.

Use this case study from the Wheeling Jesuit University and a real world type problem to learn about water pollution and water quality assessment. Lots of supporting material.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about groundwater pollution and depletion. Includes a few questions to check for understanding.

Read the passage "Thermodynamics of Gallium Arsenide Formation," and complete the related five-question quiz.

Explore some different harmful and helpful bacteria.

Explore these resources to learn more about the natural and engineered processes that can help contribute to improved water quality.

Discover how mass extinctions play a part in Earth's life history.

A concise site that defines hazardous waste and looks at who is responsible for contaminating our planet.

Practical methods are suggested to secure and not contaminate any evidence found in a vehicle at a crime scene.

News story including general information about a listeria outbreak, listeria among pregnant women, warnings from doctors, informational numbers to call and info on safe food handling to prevent listeria contamination.

In this scenario-based activity, students design ways to either clean a water source or find a new water source, depending on given hypothetical family scenarios. They act as engineers to draw and write about what they could do to...

In this activity, students will use a tutorial on the U.S. Environmental Protection Agency's website to learn about how surface water is treated to make it safe to drink.