US Environmental Protection Agency
Epa: Envirofacts Data Warehouse
Using zip codes, this site allows students to locate businesses in their communities that are producing wastes.
Royal Society of Chemistry
Visual Elements: Berkelium
Nice summary of the basic facts known about berkelium. Easy to follow.
National Institutes of Health
Niehs: Enfermedades Provocados Por El Ambiente De a a Z
An A to Z list of illnesses and disorders caused by environmental factors, e.g., asthma, allergies, mercury poisoning, cancer and others. Each is listed with a short, one paragraph overview of the condition and causes.