On a slice of the ocean front in west Singapore, a startup is building a plant to turn carbon dioxide from air and seawater into the same material as seashells, in a process that will also produce “green” hydrogen — a much-hyped clean fuel.
The idea is that the plant will pull water from the ocean, zap it with an electric current and run air through it to produce a series of chemical reactions to trap and store carbon dioxide as minerals, which can be put back in the sea or used on land.
This Singapore plant is one example of a slew of recent projects that are looking to the oceans, which already absorb almost 30% of humanity’s planet-heating pollution, as a tool to do this.
But carbon-removal projects are controversial, criticized for being expensive, unproven at scale and a distraction from policies to cut fossil fuels. And when they involve the oceans — complex ecosystems already under huge strain from global warming — criticisms can get even louder.
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📸: Equatic
Water is emerging as the critical constraint shaping sustainable construction and urban development. A United Nations warning of “water bankruptcy” positions scarcity as a core determinant of sustainable building design, forcing developers to integrate hydrological data into every feasibility study. Growth strategies in arid regions are now being rebuilt around circular economy in construction principles—combining closed-loop water systems, onsite reuse, and lifecycle assessment to ensure resilience in resource-constrained environments. The shift highlights the rise of life cycle thinking in construction, where water efficiency aligns with carbon footprint reduction and long-term life cycle cost outcomes.
Reconstruction in disaster-prone areas is demanding a redefinition of sustainable building practices. Indian townships rebuilding after landslides demonstrate the limits of traditional resilience models. A data-driven approach grounded in environmental sustainability in construction is replacing reactive rebuilding with preventative planning. Projects now value green infrastructure and community-led hazard mitigation as core performance indicators, embedding end-of-life reuse in construction and low-impact construction techniques as benchmarks for sustainable design.
The fragmented global energy transition continues to disrupt the carbon footprint of construction. As the embodied carbon of steel, cement and modular components depends heavily on place of manufacture, procurement teams are pursuing environmental product declarations (EPDs) and low embodied carbon materials to manage embodied carbon in materials more transparently. Contracts increasingly price carbon volatility alongside inflation and currency risk. Design professionals are under growing pressure to evidence net zero whole life carbon performance through rigorous whole life carbon assessment and life cycle cost modelling. This progression marks the industry’s deeper commitment to decarbonising the built environment and achieving carbon neutral construction.
Corporate investment is translating ambition into deliverable outcomes. Housing and workplace projects benchmarked against BREEAM V7 and net zero carbon buildings standards are demonstrating measurable improvements in green construction efficiency, renewable building materials integration and circular construction strategies. The distinction between retrofit and replacement is being framed by whole life carbon considerations and building lifecycle performance metrics. Each project is an applied case study in sustainable material specification and eco-design for buildings, proving that low carbon design and resource efficiency in construction are now commercially viable rather than aspirational.
Sustainable construction is no longer an environmental choice but an operational necessity. The convergence of water scarcity, embodied carbon accountability and resilience-based planning ensures that sustainable building design now serves as the foundation for both climate adaptation and long-term asset value.
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