Golnoush Abbasi is a PhD candidate at the University of Toronto, looking at the stock and flow of products containing flame retardants in the US and Canada from 1970 to 2020. She has used sales data and consumption patterns of certain products to establish a time-dependent stock of flame retardants (PBDEs), and has also investigated the fate of flame retardants added to products during their use in the indoor environment, by using dust as an indicator of their migration from products. To understand the fate of these chemicals at the end-of-life stage of products, she has applied material flow analysis to estimate the substantial flow of these products to waste management. Golnoush’s results suggest that, despite efforts made to eliminate chemicals of concern, these substances will remain in use long after controls and restrictions have been implemented. Moreover, the accumulation of these products in waste management and the use of recycled products will continue to act as sources of these substances in both indoor and outdoor environments.