This site provides information about the active ingredients registered as pesticides. Site discusses toxicology, exposure, dose-response and risk characterization.

This site provides a user navigated slide show with animations providing basic information about the element Mercury.

Very thorough information on manganese. Lists its uses, where it is found, physical properties, and potential health effects.

Discusses the different types of risks imposed when exposed to asbestos. Risks that are discussed are cancer risks, reproductive effects, and chronic effects.

This activity is part of Planet Diary and contains an online exploration of waste in different states. Young scholars investigate the Environmental Protection Agency (EPA) Superfund Priorities site for sources of nuclear waste and then...