Environmental/Work/Home Hazards  New
HazMap is a federal database about chemicals and biologic substances in the environment, in the workplace, and with certain hobbies.  Data covers 2000 chemical agents and 225 occupational diseases.  You can search by symptom, disease, or job type.

 ToxTown  New
From the National Library of Medicine. You can seach and learn about toxic chemicals and environmental health risks in your home, workplace, and neighborhood.  Search by chemicals and products, where you live, and even explore disaster scenarios.