This session will educate participants on drivers, tools, and trends for healthier materials selection. As LEED v4 and the Living Building Challenge's Materials Petal become mainstream, designers are starting to focus on material's environmental and human health impacts. In the past, "green" materials were simply defined by physical attributes: the amount of recycled and regional content, allowable VOC's, etc. Because we are now tasked with demonstrating optimization across the entire supply chain, tools and practices which facilitate "transparency" and maximize designers' decision making capabilities are emerging. This presentation will introduce the following: Red Lists, Environmental Product Declarations (EPD's), Health Product Declarations (HPD's), and extended producer responsibility. Our panel experts include a manufacturer which is promoting these tools and finding many benefits through their supply chain optimization, as well as local practitioners who are developing the tools and guiding their implementation.