The critical system of ocean currents which loops around the Atlantic Ocean is...

CNN Climate 5 months ago

The critical system of ocean currents which loops around the Atlantic Ocean is weakening and could be far closer to collapse than previously thought, according to two new studies — an event which would have catastrophic impacts on the planet's weather and climate. The Atlantic Meridional Overturning Circulation, known as the AMOC, functions like a vast conveyor belt, transporting heat, salt and freshwater through the ocean and influencing climate, weather and sea levels around the planet. A growing body of research suggests it's weakening as human-driven global warming disrupts its delicate balance of heat and salinity, with one study even predicting it could collapse as soon as next decade. But the AMOC is complex and has only been continuously monitored since 2004. Climate models generally agree it's on course to weaken this century, but there is a huge amount of uncertainty about the extent of its decline. The two new studies — one which focuses on the AMOC's future, the other on its present — provide new and alarming evidence of its decline. Read more at the link in our bio. 📷: NASA Goddard Space Flight Center

layersDaily Sustainability Digest

Published about 4 hours ago



England’s summer water stress is resetting sustainable building design. Projects are moving from passive consumption to active water stewardship through leakage reduction, smart metering, rainwater and greywater reuse, drought‑resilient landscapes and green infrastructure. Specifications are shifting to sustainable material specification and eco-design for buildings that tolerate heat and shrink–swell cycles, tying water resilience to building lifecycle performance, lifecycle assessment and whole life carbon assessment. Clients are demanding measurable carbon footprint reduction and life cycle cost certainty across design, build and operation.

Climate risk extends to cold regions as permafrost degradation destabilises foundations, roads and pipelines. Geotechnical strategies now require continuous monitoring, adaptable detailing and low carbon design aligned with environmental sustainability in construction. Frameworks such as BREEAM, including breeam v7, are expected to hard‑wire resilience, whole life carbon and sustainable building practices into procurement. Designers are prioritising low embodied carbon materials evidenced by environmental product declarations (epds), together with green building materials and renewable building materials, to reduce embodied carbon in materials and the carbon footprint of construction while supporting circular economy goals.

Market responses are consolidating around retrofit‑first and industrialised delivery. Adaptive reuse of offices in London, exemplified by deep retrofits such as 75 London Wall, preserves structure, slashes embodied carbon, advances circular economy in construction and enables end-of-life reuse in construction through circular construction strategies. Modular and offsite expansion across the Benelux is improving resource efficiency in construction, cutting waste and accelerating programmes with low carbon construction materials and green building products, supporting eco‑friendly construction and green construction. Energy volatility is accelerating net zero carbon buildings and energy-efficient buildings through electrification, on‑site generation and storage, and long‑term power purchase agreements. Briefs now target net zero whole life carbon and carbon neutral construction, integrating sustainable design, low carbon building strategies and decarbonising the built environment with robust life cycle thinking in construction.

The direction of travel is clear: rigorous whole life carbon, embodied carbon and lifecycle assessment embedded in sustainable construction, backed by metered water budgets and verifiable performance data, will define sustainable urban development, drive the circular economy and deliver net zero carbon goals across building and construction.

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