The largest oil reserves of any country on the planet, more than 300 billion barrels, are estimated to lie beneath the ground in Venezuela. President Donald Trump is now laying claim to these vast deposits after his capture of the country's president Nicolás Maduro.
Venezuelan oil is a tantalizing prospect for Trump, who reveres fossil fuels and has already set out a vision of US oil companies investing billions to unleash this black gold.
However, climate experts are sounding the alarm because this oil is among the dirtiest in the world.
"Venezuela's oil is considered 'dirty' not because of ideology, but because of physics and infrastructure," said Guy Prince, head of energy supply research at independent think tank Carbon Tracker.
The type of oil that dominates in Venezuela — mostly found in the Orinoco Belt, an expanse of land stretching across the eastern part of the country — is called heavy sour crude and is similar to Canada's oil sands. It's thick and viscous like molasses and has a higher concentration of planet-heating carbon than lighter oils.
Its consistency means heavy oil is generally harder and more energy-intensive to extract.
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📷: Jesus Vargas/Getty Images
The built environment is undergoing a structural transformation driven by regulation, resilience and resource efficiency in construction. The UK’s post-Grenfell regulatory regime has intensified accountability across the sector, demanding transparent dutyholder responsibility and measurable performance in sustainable construction. The government’s plan to reform water governance, alongside stricter rules on leakage and pollution, elevates the importance of sustainable building design that prioritises water efficiency, life cycle cost and whole life carbon assessment. Developers face rising expectations to integrate eco-design for buildings that reduce run-off and demand rather than relying on infrastructure resilience alone.
Climate adaptation is now overt reality, with managed retreat shaping policy and finance. The demolition of coastal homes in Thorpeness demonstrates how location risk is being priced into valuations and insurance. This shift underscores the necessity of sustainable urban development based on lifecycle assessment, whole life carbon reduction and low carbon design to mitigate the environmental impact of construction. The resilience transition highlights that net zero whole life carbon and circular economy principles are not theoretical ambitions but essential for long-term asset viability.
Innovation on the supply side is reinforcing circular economy in construction. The University of Birmingham’s new rare-earth magnet recycling plant supports a circular supply chain for renewable building materials essential to low carbon building systems, from heat pumps to vertical transport. Yet progress on decarbonising materials such as cement and steel remains uneven, showing that embodied carbon in materials and process transparency must go beyond artificial intelligence and data analytics to achieve meaningful carbon footprint reduction. Cleaner production depends on applying life cycle thinking in construction and adopting low embodied carbon materials supported by environmental product declarations (EPDs).
Investment in flexible energy infrastructure, including platforms enabling energy-efficient buildings to interact with the grid, signals a future of decentralised, renewable power and carbon neutral construction. Policy signals remain inconsistent, but the imperative for environmental sustainability in construction is clear. Build fabric-first, electrify systems, embed circular construction strategies and specify green building materials validated through whole life carbon reporting. Those priorities define sustainable material specification, improve building lifecycle performance and align with BREEAM and BREEAM v7 standards, strengthening the economic case for decarbonising the built environment.
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