Authors of that study analyzed dust collected in 16 California homes in 2006 and again in 2011, testing for 49 flame retardant chemicals in household dust (the main route of human exposure to flame retardant chemicals, especially for children).
Master gardener John Coykendall briefed us on heirloom bean varieties, and later garden manager Jeff Ross took me on a horticultural tour that extended from the deep woods where ginger grows wild to the flame azaleas by the main buildings.