Devra Davis: The Secret History of the War on Cancer

Terry Gross has an interesting Fresh Air Radio Interview with Devra Davis ("Chemicals, Cancer, and You"), who has written a book called The Secret History of the War on Cancer in which she discusses the many environmental causes of cancer and stresses prevention of disease by avoiding exposure to everyday chemicals in household products. Manufacturers in the US hinder our ability to avoid certain hazardous chemicals by not labeling their products. Dr.

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Air Fresheners May be Toxic

An article in the San Francisco Chronicle reports on recent efforts of environmental groups to force regulation of air fresheners. There is a demand for disclosure of hazardous chemical ingredients, which may include benzene, formaldehyde, and phthalates. Phthalates have been linked with disruption of testosterone production.

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Household Cleaning Products Can Cause Indoor Air Pollution

An article in the San Francisco Chronicle reports on a recent study showing that indoor air can be degraded by using common household cleaners. Toxic chemicals in these products can cause fertility problems. Prof. William Nazaroff of UC Berkeley is interviewed about a recent study of his on household product emissions showing that exposures can be large.

Air Change Rates of Motor Vehicles and In-Vehicle Pollutant Concentrations from Secondhand Smoke

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This article describes a series of tracer gas experiments designed to measure vehicle air exchange rates for a variety of speeds, window positions, and ventilator functions. Experiments were also conducted to measure real-time particles from secondhand smoke in cars across various conditions.

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Getting Around the Website

The website is organized to allow direct access to the elements of specific research projects. Elements include documents, presentations, data sets, software, etc. By clicking on the links along the top of the page, users can see comprehensive lists of each type of material, regardless of the project it is associated with. Alternatively, if a user is interested in materials related to a given topic area or project, they can click on the link for "Matrix of Research Projects" in the navigation panel on the left.

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Anyone can join ExposureScience.Org and become involved in an online community of researchers.

Please create a new account by filling out the registration form. You account should be approved quickly, as long as you provide an indication of your interests in exposure science. To request a new online group or to be given contributor privileges, and/or to volunteer to manager a group, please send an email to Dr. Klepeis using the contact form.

Serving Researchers and the General Public

For researchers, ExposureScience.Org offers a chance to communicate and collaborate with other scientists and to showcase past work, making it available for others who may not otherwise be able to find it or access it. Whether you perform research or not, you can contribute to the website by posting useful exposure-related information and forum topics.

Private Collaborative Groups

We maintain different private sections of the website where members can post materials for special interest groups (for example, tobacco smoke monitoring or software used in human exposure analysis). When registering, you can request to join different groups, such as the "Project Contributors Group" to contribute research materials. You can also request to join the "Researchers Group" or another group involved with an area of research that interests you.

Please send an email to Dr. Klepeis using the contact form if you have any questions about contributing or joining/starting a specific research group.

What is Exposure Science?

This website provides visitors with information and materials regarding research projects in human exposure. The field of human exposure is defined as the study of human contact with toxic chemical, physical or biological agents occurring in a specific environment. Toxic agents may travel through air, water, soil, or food systems before reaching a human being's lungs, skin, or gut. Exposure scientists aim to advance knowledge of the mechanisms and dynamics of events that may cause or prevent adverse health in people.

Real-Time Measurement of Outdoor Tobacco Smoke Particles

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Journal Article


An article describing a number of surveys to outdoor smoking locations and a number of controlled experiments on a private patio where real-time levels of airborne particulate matter were measured in proximity to smokers or burning cigarettes and cigars

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An Increasing Push for Open-Access Research

In a BBC news article, Michael Geist of the University of Ottawa describes the growing movement for more open-access to research.

From the article: "Given the connection between research and economic prosperity, the time has come for governments, their funding agencies, and the international research community to maximise the public's investment in research by prioritising open access".

Human Exposure Research Package (heR)

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Klepeis NE (2004) "The Human Exposure Research Software Package (heR)" http://ExposureScience Org/heR.


Software package for conducting research in human exposure. Routines for manipulating and plotting data, analyzing activity patterns, indoor air quality modeling, and exposure simulation. Miscellaneous data sets for activity patterns and air pollutant monitoring.

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