The vast data centers that power artificial intelligence guzzle huge amounts of energy but they also have another alarming impact, according to new research. They are creating "heat islands," warming the land around them by up to 16 degrees Fahrenheit, and making life hotter for more than 340 million people.
There are still big gaps in our understanding of the impacts of data centers, even as they boom in number, said Andrea Marinoni, associate professor with the Earth Observation group at the University of Cambridge, and an author of the study, which has not yet been peer-reviewed.
Marinoni and his colleagues decided to dig into one under-researched impact: the heat they release through their energy-intensive processes, including computation and powering cooling systems.
To do this, they looked at temperature data over the last 20 years from remote sensors and mapped it against the locations of AI "hyperscalers" — vast data centers that house thousands of servers and can stretch over a million square feet, which have mostly been built within the last decade.
They focused on more than 6,000 data centers located away from highly dense urban areas, as surface temperatures around these were less likely to have been affected by other factors, such as manufacturing or the heating of homes. The researchers also filtered out seasonal impacts, global warming trends and other influences.
They found surface temperatures increased by an average of 3.6 degrees Fahrenheit after a data center started operations. In extreme cases, nearby temperatures increase by up to 16.4 degrees Fahrenheit.
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📷: Andrew Caballero-Reynolds/AFP/Getty Images
Policy, innovation, and climate urgency are converging to redefine sustainable construction and sustainable building design. The UK government’s proposal to classify clean energy infrastructure as Critical National Importance sets a precedent that links energy security with net zero carbon goals and accelerates delivery of low carbon buildings. The Climate Change Committee’s recent assessment highlights the need for rapid retrofitting aligned with whole life carbon assessment and lifecycle assessment principles, reinforcing a fabric-first approach to energy-efficient buildings and sustainable building practices that minimise the environmental impact of construction.
Investment in smart grids strengthens the foundation for net zero carbon buildings by enabling low carbon design across heating and transport systems. Researchers investigating mineral-based hydrogen generation and CO₂ storage are expanding the discussion of embodied carbon in materials and whole life carbon, suggesting a potential circular economy in construction where rock formations act as both energy source and carbon sink. This approach aligns with decarbonising the built environment and offers a credible pathway to reduce the carbon footprint of construction while enhancing building lifecycle performance.
Turkey’s commitment to electrification as the organising principle for economic growth signals a global shift toward green construction and renewable building materials. The strategy underlines how circular construction strategies and eco-design for buildings are influencing international supply chains. In the UK, large-scale urban regeneration such as Leeds’ 2,000-home brownfield development is demonstrating whole life carbon assessment in action, combining affordable housing, clean energy standards, sustainable material specification, and post-industrial land reuse.
The transition toward net zero whole life carbon is becoming embedded within sustainable urban development and green infrastructure policy frameworks. With tools such as BREEAM and BREEAM V7 sharpening focus on environmental product declarations (EPDs) and resource efficiency in construction, resilience is evolving from architectural ideal to economic imperative. The growing emphasis on eco-friendly construction, low embodied carbon materials, and end-of-life reuse in construction is establishing a long-term model for carbon neutral construction rooted in life cycle cost thinking in construction and environmental sustainability in construction.
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