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

CNN Climate 3 hours 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 3 days ago



UKGBC’s latest message is that sustainable construction will be won through retrofit, operational optimisation and tougher evidence, not through glossy replacement schemes. Upgrading existing commercial assets with low carbon design, better fabric and smarter controls is emerging as the most credible route to decarbonising the built environment, cutting the carbon footprint of construction and improving building lifecycle performance. That places whole life carbon, embodied carbon and a robust whole life carbon assessment at the centre of investment decisions, where life cycle cost, lifecycle assessment and measurable operational outcomes now matter as much as design intent. Sustainable building design is becoming a test of commercial resilience, with net zero carbon buildings judged on verified performance rather than net zero carbon claims alone.

Proposed changes to GHG Protocol scope 3 reporting are set to intensify scrutiny of embodied carbon in materials, supply-chain transparency and the environmental impact of construction. Developers, contractors and manufacturers will face growing pressure to use low carbon construction materials, low embodied carbon materials and environmental product declarations (EPDs) to prove carbon footprint reduction and resource efficiency in construction. This is pushing environmental sustainability in construction towards circular economy in construction, circular construction strategies and end-of-life reuse in construction, with greater value placed on sustainable material specification, green building materials and renewable building materials. For the market, the direction is clear: eco-design for buildings, sustainable design and sustainable building practices must deliver net zero whole life carbon outcomes, with BREEAM and BREEAM v7 likely to gain further relevance as benchmarks for green construction, eco-friendly construction and low carbon building performance.

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