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.
Other
The Children's Heart Foundation
A foundation homepage that is helping children with congenital heart disease.