RT Report T1 Building Materials and the Climate: Constructing a New Future A1 United Nations Environment Programme, A2 Dyson, Anna A2 Keena, Naomi A2 Lokko, Mae-ling A2 Reck, Barbara A2 Ciardullo, Christina K1 life cycle K1 carbon emission K1 building PB United Nations Environment Programme SN 978-92-807-4064-6 YR 2023 FD 2023-09 LK https://wedocs.unep.org/handle/20.500.11822/43293 UL https://wedocs.unep.org/handle/20.500.11822/43293 NO This report highlights the urgent need to develop new models for cooperation on the decarbonisation of building materials, if the world is to reach its goals for net zero emissions from the built environment sector by the mid-century. It focuses on three urgent pathways that must be facilitated by supporting stakeholders across the lifecycle of the built environment sector in order to decarbonise: i) AVOID extraction and production of raw materials by galvanising a circular economy; ii) SHIFT to regenerative material practices wherever possible by using ethically produced low carbon earth- and bio-based building materials whenever possible; and iii) IMPROVE methods to radically decarbonise conventional materials. DS UN Environment Document Repository RD Sep 20, 2026