Off Brazil's northeastern coast, where the sediment-heavy water of the vast Amazon River tips out into the Atlantic, are two very different types of treasure. The first is an ecological gem: a 3,600 square-mile deepwater coral reef discovered less than a decade ago. The second treasure puts the first in immediate danger. Billions of barrels of oil may lie in the ancient sediments beneath the seabed, and licenses have just been approved to drill there.
A few hundred miles north, off the coast of Guyana, companies are already pumping around 650,000 barrels of oil a day from a huge deep-water reservoir discovered in 2015. The find has transformed this rainforest-carpeted country into the planet's newest petrostate and highest oil producer per capita.
Several thousand miles inland to the south, the wide, dusty plains of western Argentina's Vaca Muerta — "dead cow" in English — are dotted with oil wells. Fossil fuel production from this enormous shale deposit has boomed over the past decade, putting it on track to produce more than a million barrels a day by 2030, analysts predict.
They are three very different countries: an economic behemoth with an environment-championing president, a biodiversity hotspot with high rates of poverty and an economically volatile country led by a chainsaw-wielding climate denier. Yet they are united in their quest to expand oil production, arguing it's vital to their economic and social development.
This new fossil fuel boom is happening just as the impacts of the climate crisis — driven by fossil fuels — are beginning to bite in ever more alarming ways. People in South America are dying in fires, floods, storms and droughts made longer and more catastrophic by climate change.
But as global oil demand stays strong, and other, richer, countries show few signs of scaling back, their argument is: Why shouldn't oil supply come from South America?
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📸: Pilar Olivares/Reuters; Anderson Coelho/Reuters
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.
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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