The buildings and construction sector is by far the largest emitter of greenhouse gases, accounting for a staggering 37% of global emissions. The production and use of materials such as cement, steel, and aluminum have a significant carbon footprint. Building Materials and the Climate: Constructing a New Future, a report developed by UNEP, Yale Center for Ecosystems + Architecture in the framework of the Global Alliance for Buildings and Construction (GlobalABC), highlights the pressing need to establish innovative cooperation models to decarbonize building materials. These models are critical if we are to achieve the world’s ambitious target of net zero emissions from the built environment sector by mid-century.