Welcome to Highgrade and this podcast series on the responsible sourcing of minerals. Over the last four episodes, we have looked at the main production steps in the supply chain of cobalt - a metal necessary for high-performing batteries, and as such key to support the transition to a future free of fossil fuels. Today in our final stop, we explore the role of regulators in responsible sourcing. As the public grows increasingly concerned about the human and environmental cost of the products they buy: how should policymakers respond? Our guest today joins us from the German Federal Ministry for Economic Cooperation and Development, BMZ: Heike Henn is Director for Climate, Energy and Environment. *** Highgrade Media is a not-for-profit organisation that produces interviews and documentaries that identify, capture and disseminate analysis and insights in the field of natural resources and social progress. Our mission is to provide open and free access to specialist knowledge and to disseminate good practice and innovation in this field. See www.highgrade.media for our portfolio of published material. With support from the German Federal Ministry for Economic Cooperation and Development, through BGR.