A groundbreaking discovery in the depths of the Pacific Ocean has unveiled an astonishing secret: polymetallic nodules ,those potato-shaped mineral deposits, produce oxygen. This revelation challenges our fundamental understanding of how oxygen reaches the ocean’s depths, previously thought to be solely through the circulation of surface waters.
Scientists were stunned to observe oxygen levels triple in just two days during experiments on these nodules. It appears they can split water molecules into oxygen and hydrogen, a process similar to electrolysis. This extraordinary finding suggests a previously unknown ecosystem function in the deep sea.
The implications are far-reaching. As the world grapples with the climate crisis, this discovery offers a glimmer of hope for potential oxygen production in extraterrestrial environments. However, it also casts a long shadow over the looming threat of deep-sea mining, which targets these very same nodules. The removal or disruption of these nodules could have catastrophic consequences for deep-sea life and the delicate balance of our planet’s oceans.
Now, more than ever, we must mobilize to protect the deep sea. This fragile ecosystem, teeming with life and playing a critical role in regulating our climate, is at risk. We cannot afford to gamble with its future. It is imperative that we establish strong international protections for the deep sea and halt the destructive practices of deep-sea mining before it’s too late.
Sources: Sweetman, A.K., Smith, A.J., de Jonge, D.S.W. et al. Evidence of dark oxygen production at the abyssal seafloor. Nat. Geosci. (2024). https://doi.org/10.1038/s41561-024-01480-8 “Deep Ocean Producing ‘Dark’ Oxygen, Study Finds” by Yale Environment 360 Rabone, Muriel et al. Current Biology, Volume 33, Issue 12, 2383 - 2396.e5. How many metazoan species live in the world’s largest mineral exploration region? https://doi.org/10.1016/j.cub.2023.04.052 https://www.isa.org.jm/wp-content/uploads/2022/06/eng7.pdf
The UK construction industry is advancing sustainable building design through projects focused on both policy and practical innovation. Recent plans to restore the Saville Theatre in London by SPPARC architects highlight adaptive reuse as a key strategy for reducing the whole life carbon footprint of historic buildings. This approach prioritises whole life carbon assessment and embodied carbon reduction, demonstrating the value of sustainable refurbishment and life cycle thinking in construction.
Global collaboration is driving improvements in environmental sustainability in construction. A partnership between Sapphire Balconies, Kindred Construction, and Public Architecture introduces prefabricated, modular balcony systems for a major project in Vancouver. These designs use low embodied carbon materials and renewable building materials, supporting the circular economy in construction and minimising waste while improving building lifecycle performance.
Decarbonising the built environment requires attention to both operational carbon and transport emissions. The Society of Motor Manufacturers and Traders warns of serious delays in connecting electric vehicle chargers to the UK grid, highlighting persistent barriers to achieving net zero whole life carbon supply chains. Investment in green infrastructure and resource efficiency in construction is crucial for the transition to net zero carbon buildings and low carbon construction materials.
Digital solutions play a vital role in sustainable building practices. New research shows that artificial intelligence significantly enhances sustainability outcomes, including in sustainable construction, by streamlining materials management, improving energy-efficient buildings and supporting life cycle cost optimisation. AI is emerging as an essential tool for lifecycle assessment, low impact construction, and eco-design for buildings.
Political leadership is needed to ensure climate commitments are met. Manchester’s Mayor has urged the UK government to reinforce support for sustainable urban development and carbon footprint reduction in the construction sector. Policy backing, combined with ongoing innovation in sustainable material specification and end-of-life reuse in construction, is necessary for reducing the environmental impact of construction.
Together, these developments showcase the interconnected strategies required to achieve carbon neutral construction and advance sustainability in the built environment. By focusing on sustainable architecture, circular construction strategies, and robust whole life carbon assessment, the industry continues to move towards a low carbon future.
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