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."
December 2011
Added section on Benefits of Improving Indoor Environmental Quality.
May 2012
Major update to the section of web site entitled "Indoor Dampness, Biological Contaminants and Health." Minor updates to other sections.
April 2013
Major updates to the section entitled "Impacts of Indoor Environments on Human Performance and Productivity."