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
Sustainable construction is moving from ESG aspiration to financial discipline. More than 830 companies and investors now back TNFD nature-risk disclosure, including investors with $26tr under management and listed firms worth $10.5tr. For developers, designers and material suppliers, environmental sustainability in construction is becoming inseparable from balance-sheet risk, whole life carbon, embodied carbon and credible whole life carbon assessment.
Climate exposure is also redefining sustainable building design. Insurers are reported to be retreating from some climate-risk cover, making life cycle cost, building lifecycle performance and resilience central to investment decisions. Satellite evidence of uneven urban subsidence, including coastal Jakarta sinking by up to 7cm a year in some areas, underlines the need for sustainable design, low carbon design, robust foundations, drainage and green infrastructure from the earliest project stages. Southern England’s severe water stress and tougher regulatory checks on corporate water use reinforce the commercial case for energy-efficient buildings, water-conscious eco-design for buildings and sustainable urban development.
Materials transparency is becoming a decisive test for green construction. Think Timber’s new pricing and supply-chain data platform points to the practical data needed to scale renewable building materials, green building materials and low carbon construction materials beyond flagship schemes. Stronger visibility over timber supply, sustainable material specification and embodied carbon in materials supports lifecycle assessment, environmental product declarations (EPDs), resource efficiency in construction and more reliable procurement for net zero carbon buildings.
The defence of the EU emissions trading system by energy and business groups signals intensifying pressure on cement, steel and other carbon-heavy inputs. The carbon footprint of construction will be priced more directly, accelerating demand for low embodied carbon materials, carbon footprint reduction, carbon neutral construction and decarbonising the built environment. Firms pursuing net zero whole life carbon will need circular economy thinking, circular economy in construction, circular construction strategies and end-of-life reuse in construction rather than isolated product substitutions.
UK construction output fell 1% in the second quarter, sharpening the commercial test for sustainable building practices. The strongest firms will make low-impact construction, eco-friendly construction and net zero carbon delivery repeatable rather than bespoke. BREEAM, BREEAM v7 and similar frameworks will matter most where they support life cycle thinking in construction, measurable building performance and lower environmental impact of construction. Green building is no longer a marketing claim; it is risk management, insurability and long-term asset protection.
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