Project: "rECOver" Many green technologies (e.g. batteries and hydrogen) rely on critical elements, materials, and supply chains that have negative environmental impacts. A collider event brought together policymakers, industry partners and specific actors with influence over the use and development of 'green' technology. A collection of qualitative and scientific data regarding the existing gaps in the thinking are being addressed. The Team expertise for this Energy and Environment Challenge is in Robotics, Energy, Chemistry, Mechanical Engineering, Psychology and Law.