This grant provides partial support to the National Academies of Sciences, Engineering, and Medicine (NASEM) for a consensus study on the research needs and implications of emerging indoor chemistry research.  NASEM will convene an ad hoc committee of scientific experts and leaders to examine the state-of-the-science regarding chemicals in indoor air. It will collect new findings about chemical reactions, sources of chemicals, and the abundance and distribution of chemical species indoors.  The committee will then examine how these new findings fit into existing scholarship about the link between chemical exposure, air quality, and human health. Based on this information, the report will contain consensus findings on the key implications of this scientific research, including potential near-term opportunities for incorporating what is known into practice, and will identify topics and issue areas where additional chemistry research will be most critical to understanding the chemical composition of indoor air and the consequences of adverse exposures. The report will also identify current methodological or technological barriers to advancing our understanding of indoor chemistry and areas where enhanced coordination or collaboration are necessary for continued progress.   Grant funds will support forming and convening the committee; at least one information-gathering workshop; and the composition, review, publication, and dissemination of the committee’s report.