April 2008
Initial release of web site.
July 2008
Web site address changed to www.iaqscience.lbl.gov
August 2008
Added sections of the web site with system international (SI) units, where applicable.
March 2009
Major expansion of the section of web site entitled "Indoor Dampness, Biological Contaminants, and Health."
Expansion of text on "Ventilation Rates and Sick Building Syndrome Symptoms" in the web site section entitled "Impacts of Building Ventilation on Health and Performance."