The Exposure Factors Handbook provides summaries of available statistical data on several factors used in assessing human exposure to toxic chemicals.

The Environmental Protection Agency (EPA) has released a series of Parametric Probability Distributions to be used in conjunction with the previously released Exposure Factors Handbook. Whereas the Exposure Factors Handbook provides summaries of available statistical data on several factors used in assessing human exposure to toxic chemicals, the Parametric Probability Distributions document...

Tox Town, a Web-based project of the National Library of Medicine (NLM), is "an interactive guide to commonly encountered toxic substances." This highly visual Web site provides a wealth of information and related resources, such as an introduction to everyday locations where toxic chemicals might lurk, non-technical descriptions of toxins, the effect of toxins on human health, and more. Users...

Billed as the first periodic table on the World Wide Web, WebElements: Periodic Table Scholar Edition is authored by Mark Winter of the University of Sheffield, England. Although many similar online periodic tables can be found, this offering is unique in that the material is presented in a light hearted and interesting way. The main page contains the table and all the common associated...