In an unassuming industrial park 30 miles outside Boston, engineers are building a futuristic machine to replicate the energy of the stars. If all goes to plan, it could be the key to producing virtually unlimited, clean electricity in the United States in about a decade.
The donut-shaped machine Commonwealth Fusion Systems is assembling to generate this energy is simultaneously the hottest and coldest place in the entire solar system, according to the scientists who are building it.
It is inside that extreme environment in the so-called tokamak that they smash atoms together in 100-million-degree plasma. The nuclear fusion reaction is surrounded by a magnetic field more than 400,000 times more powerful than the Earth's and chilled with cryogenic gases close to absolute zero.
The fusion reaction — forcing two atoms to merge — is what creates the energy of the sun. It is the exact opposite of what the world knows now as "nuclear power" — a fission reaction that splits atoms.
Nuclear fusion has far greater energy potential, with none of the safety concerns around radioactive waste.
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📸 : Sophie Park for CNN
The UK construction sector is entering a decisive phase of sustainable construction focused on measurable carbon reduction rather than symbolic gestures. The launch of the UK’s first commercial‑scale carbon capture and storage facilities in the East Coast Cluster, operated by pX Group, marks significant progress in decarbonising the built environment. These links between energy‑intensive industries and new CO₂ transport and storage systems are reshaping the embodied carbon profile of essential materials such as cement and steel, critical to sustainable building design and eco‑friendly construction. The integration of low embodied carbon materials forms a foundation for the adoption of whole life carbon assessment methods and lifecycle assessment strategies now demanded across the supply chain.
Concrete innovation is accelerating as “green concrete” becomes a viable element of low carbon design. Manufacturers are scaling from trials to full delivery. JCB’s move to provide a 100% biodiesel option for tracked excavators demonstrates practical progress toward net zero carbon buildings and carbon neutral construction. Effective reductions depend on verified renewable building materials and traceable biofuels, requiring stricter sustainable material specification and transparent environmental product declarations (EPDs). Verified sourcing and supply are vital to minimising the carbon footprint of construction and improving resource efficiency in construction.
Across projects, whole life carbon thinking is now inseparable from life cycle cost analysis. Intensifying climate conditions—from escalating floods to drought stress—demand resilient, energy‑efficient buildings and green infrastructure designed using eco‑design for buildings principles. Resilience and sustainability are no longer optional performance indicators but integral to building lifecycle performance and sustainable building practices. The industry response is to secure supply from emerging low carbon construction materials clusters, adopt verified fuels and plant emissions data, and embed circular construction strategies.
The momentum reflects a commitment to environmental sustainability in construction, combining circular economy in construction models with frameworks such as BREEAM V7 to achieve net zero whole life carbon outcomes. Through transparent lifecycle assessment and life cycle thinking in construction, every project can demonstrate measurable progress in carbon footprint reduction and deliver the economic and environmental returns driving the transition to sustainable urban development.
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