In the heart of the Amazon Basin, where the borders and cultures of Peru,...

CNN Climate 1 year ago

In the heart of the Amazon Basin, where the borders and cultures of Peru, Colombia and Brazil converge, a tiny, shape-shifting island has become the unlikely setting for a diplomatic tug of war. “If God wanted, the river would change and even Santa Rosa could disappear,” said Gladys Hari Leiva, a hotel owner who has lived on the island for 21 years. The island’s mercurial geography makes it a difficult place to settle; families adapt season by season, walking across sandbanks in the dry months, then paddling canoes through flooded streets when the rains come. Santa Rosa’s fragility has not stopped Peru and Colombia fighting over it. In fact, its shifting shoreline has made matters worse. Yet despite these limitations, the island is coveted by the countries around it. Peru and Colombia have argued over who the island belongs to for decades. As the Amazon River moves, so too does the international boundary between the two countries. The main channel of the Amazon River constantly erodes existing land and deposits new earth. Each year the river carries roughly 1.2 billion tons of sediment from the Andes toward the Atlantic, reshaping its banks and islands as it flows. During high-water months, water spills over and settles across the floodplain, leaving behind up to 12 inches of fresh soil annually. Residents who have lived in the Basin for a long time are used to the seasonal ebb and flow of the water and land, but it’s becoming less predictable. Read more at the link in our bio. 📷: Santiago Ruiz/AFP/Getty Images; Luid Acosta/AFP/Getty Images/File

layersDaily Sustainability Digest

Published about 9 hours ago



The UK’s sustainable construction agenda is shifting from headline innovation to delivery at scale, with retrofit, electrified heat and climate resilience now central to decarbonising the built environment. The National Retrofit Hub’s call for a stronger retrofit system highlights a persistent gap between ambition and implementation: reliable skills, coherent standards, trusted advice and financeable programmes are still needed to cut the carbon footprint of construction across existing building stock.

Whole life carbon is becoming the defining measure of progress.

Retrofit strategies must be judged through whole life carbon assessment, embodied carbon, life cycle cost and lifecycle assessment, rather than short-term capital spend alone. Sustainable building design now depends on building lifecycle performance, low carbon design and sustainable material specification, including environmental product declarations (EPDs), low embodied carbon materials and greater resource efficiency in construction.

Nesta’s analysis that electricity bills are rising more slowly than gas strengthens the case for heat pumps, electrified building services and energy-efficient buildings. If the price gap continues, low carbon building upgrades will become easier to justify through household running costs as well as carbon footprint reduction. Net zero carbon buildings and net zero whole life carbon outcomes will rely on this practical alignment between policy, affordability and performance.

Climate adaptation is becoming part of environmental sustainability in construction. Planting, shading, passive cooling, ventilation and green infrastructure are now essential components of sustainable design and eco-design for buildings, not optional enhancements. The sector’s response to hotter summers must avoid locking in high-energy cooling demand and instead prioritise resilient, low-impact construction.

For commercial property owners, the next phase of ESOS must turn audits into investable decarbonisation plans. BREEAM, BREEAM v7, circular economy principles and circular construction strategies can help move projects from compliance to measurable performance. Sustainable building practices, end-of-life reuse in construction and circular economy in construction will define whether green construction becomes a scalable operating model or remains a collection of isolated initiatives.

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