Martha Lewis is Head of Materials at Henning Larsen, where she promotes holistic project strategies focusing on healthy, ethical, and environmentally tenable materials. Martha is currently involved in establishing a Danish building material passport, is active in the Danish Standards work on circular standards, and was a member of the Buildings as Material Banks shareholders network, investigating potential for an EU material passport. In 2016, she participated in the advisory group for the Danish Environmental protection Agency’s “Undesirable Substances in Sustainable Buildings” and has since published papers on hazardous content in Danish and Nordic building products. She received Building Green’s ”Sustainable Element” person of the year prize in 2019. Martha holds a MArch from Washington University and a BA from Vassar College.