Massachusetts Institute of Technology
Mit: Open Course Ware: Chemicals in the Environment: Toxicology and Public Health
A college course featuring instructor's notes and case studies about the relationship between exposure to environmental chemicals and human diseases.
PBS
Now With Bill Moyers: Kids and Chemicals: Facts and Laws
Investigate synthetic chemicals that may be found in one's environment, and consider how toxic synthetic chemicals may affect people differently. Reflect on alternatives to toxic home-use products, and evaluate the risks and benefits.
US Environmental Protection Agency
Epa: Chemicals in the Environment
Information summaries on some chemicals and descriptions of how you might be exposed to these chemicals, how that exposure might affect the environment, etc. Please note that this type of information changes rapidly.