Breaking AI & Tech News Analyzed

The Rise of AI Data Centres and Their Environmental Impact Tech giants are racing to build the infrastructure that powers artificial intelligence, but a growing body of evidence suggests that AI hyperscalers – large-scale cloud service providers like Google, Amazon and Microsoft – are warming the ground around them as well. How Much Energy Do AI Data Centres Use? AI data centres use powerful chips that perform thousands of calculations in parallel and running large models continuously makes them much more energy hungry than typical servers used to browse the web. According to the International Energy Agency (IEA), data centres consumed about 415 terawatt hours (TWh) of electricity in 2024, about 1.5 percent of global supply, growing at about 15 percent a year over the last five years. The Data Heat Island Effect A study by Cambridge-led researchers found that land surface temperatures around AI data centres rise by an average of 2 degrees Celsius (3.6 degrees Fahrenheit), with some areas recording increases as high as 9C (16.2F). The phenomenon mirrors the urban heat island effect, where concentrated human activity causes cities to run warmer than surrounding rural areas. Data Centre Building Boom The global landscape for AI data centre construction is currently experiencing an unprecedented acceleration, with more than 11,600 data centres active worldwide as of June 2026. Most data centres are located in the United States, which has more than 4,300 according to Data Center Map, a crowdsourced database that tracks data centre locations worldwide. The Impact of AI Data Centres on Local Communities The resulting temperature increases could place additional pressure on nearby communities by affecting health, energy demand and overall wellbeing. Using NASA satellite data, researchers measured land surface temperature globally from 2004 to 2024 and cross-referenced it with more than 11,000 AI data centre locations worldwide. $5.3 Trillion of Capital Expenditure Global investment bank, Goldman Sachs, says it expects a combined $5.3 trillion of capital expenditure between 2025 to 2030 for the four largest hyperscalers: Microsoft, Amazon, Alphabet and Meta. Major upcoming projects include: Meta’s $27bn Hyperion campus in Louisiana. Microsoft’s multiphase $20bn data centre campus expansion in Wisconsin. Amazon’s $25bn investment in data centre infrastructure in Mississippi. Google’s Project Spade, a $15bn hyperscale data centre campus located in New Florence, Missouri.

The Escalating Lethality of Global HeatHeatwaves have transitioned from seasonal discomforts to a critical public health emergency. With an estimated half a million people dying annually, heat has become a 'silent killer' that claims more lives annually than wars or terrorism, yet remains underreported due to its indirect nature.The Mechanism of the Silent Killer: Beyond HeatstrokeThe primary danger lies not in acute heatstroke, but in the chronic stress placed on the human body. High temperatures force the heart and kidneys into overdrive to maintain homeostasis, often triggering fatal events in individuals with pre-existing conditions like heart, lung, and kidney disease.Warm Nights: The inability of nights to cool down below 20C ('tropical') or 25C ('equatorial') prevents physiological recovery, compounding daily damage.Secondary Effects: Heatwaves exacerbate air pollution, increase wildfire risks, and lead to power outages, further straining health systems.Data-Driven Projections: The 1.3C ThresholdMore than a century of fossil fuel pollution has raised global temperatures by approximately 1.3C since preindustrial times. This baseline shift has made extreme heat far more common.Contrary to the belief that warming might reduce cold-related deaths, modeling of 854 European cities predicts a net increase in temperature-related mortality under all emissions scenarios. The rise in heat deaths is projected to outpace the reduction in cold deaths.Disproportionate Impact: Vulnerability in the Urban Heat IslandThe impact is not uniform. The 'urban heat island' effect—caused by concrete and lack of green space—makes cities significantly hotter than rural areas.Vulnerable Demographics: The elderly, those with chronic illnesses, and outdoor workers face the highest risk.Socioeconomic Factors: Poorer populations are disproportionately affected due to limited access to air conditioning and insulated housing.The Adaptation Paradox: Necessity of Cooling vs. EmissionsAs the climate crisis accelerates, the debate over air conditioning (AC) has shifted from environmental concern to public health necessity.While AC increases emissions if powered by fossil fuels, the UK Climate Change Committee (CCC) has recommended installing AC in all care homes and hospitals within the next decade. This highlights a grim reality: adaptation strategies may temporarily worsen the climate crisis to save lives.

Executive Summary: The Human Cost of Record-Breaking Temperatures Delhi is currently experiencing its warmest May night in 14 years, with top daytime readings consistently reaching 43°C. While most residents retreat indoors, Shahida and her family of 10 are forced to endure these conditions on the pavement, highlighting a critical gap in climate resilience. Surviving Under the Concrete: Daily Life in the Heat Shahida and her family have made the concrete structure of a flyover their only refuge after repeated attempts to rebuild shanties were met with demolition. Living in a pink mosquito-netting tent, the family faces a constant barrage of traffic noise and the suffocating heat trapped beneath the overpass. Shahida describes the daily struggle of waking at 6am to prepare for the day, constantly alert to the smallest sounds due to the danger of sleeping on the street. The family’s routine involves waking early, securing a safer space, and managing limited resources like water and milk, which spoil quickly in the extreme temperatures. Quantifying the Danger: Heatwaves and Homeless Mortality The physical toll of the heat is severe and quantifiable. During last summer’s heatwave, 192 homeless people died over a nine-day period. Currently, minimum temperatures hover around 32.4°C (90.3°F), making it difficult for the homeless to find relief even at night. Shahida’s specific challenges include the difficulty of breastfeeding her nine-month-old daughter, Jannat, due to the heat, and the prohibitive cost of cold drinking water, which can cost nearly 20 rupees (16p) per litre. The Climate Inequality Gap Experts emphasize that homelessness creates a compounding vulnerability to climate extremes. Chandni Singh, a lead author with the Intergovernmental Panel on Climate Change (IPCC), notes that homeless individuals face not just exposure to heat, but also unreliable access to food, water, and healthcare—essential factors for adaptation. Shahida’s story underscores the systemic failure to protect the most marginalized populations from the escalating impacts of global warming. Future Outlook: Urban Heat Islands and Vulnerable Populations As climate change intensifies, urban heat islands like Delhi will become increasingly dangerous. The lack of infrastructure to support the homeless population means that as temperatures rise, the mortality rate among the homeless is likely to follow suit. Future urban planning and climate adaptation strategies must prioritize the most vulnerable, ensuring that basic survival resources are accessible during extreme weather events.