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Heatwave Overview: Record-Breaking Temperatures Across the UK Searing heat has swept the country, with the Met Office reporting a peak of 34.6°C in Wisley, Surrey, and forecasts of up to 38°C on Wednesday and 39°C on Thursday in south‑east England. These readings would shatter the previous June record of 35.6°C (set in 1957 and 1976) and approach the all‑time high of 40.3°C recorded in July 2022. Infrastructure Strain: Schools, Hospitals and Rail Services Disrupted Public services are scrambling to cope with the extreme temperatures. Key coping measures this week include: Reduced rail speeds and services to prevent track buckling. Cancellation of hospital patient appointments amid rising emergency demand. School closures or shortened days across southern England and Wales. Hosepipe bans in south‑east England to curb water usage. Both the Met Office and health authorities issued rare red weather and heat‑health alerts, warning of a "risk to life for even the healthy population". Numbers Behind the Crisis: Temperature Records and Consumer Behaviour Beyond the thermometer readings, the heatwave is reshaping consumer patterns: Sales of electric fans have more than doubled compared with the previous four weeks, according to one retailer. Another retailer expects ice‑cream and ice‑lolly sales to rise by roughly 50%. Temperatures in nearby France peaked at 44.3°C, with 40 deaths from drowning reported. In Spain, one in eight weather stations recorded temperatures above 40°C, with forecasts of up to 44°C. Wider Implications: Climate Breakdown Exposes Vulnerabilities in Public Services Scientists link the intensity of the heatwave to human‑induced climate change, adding 2‑4°C to the baseline heat. António Guterres, UN Secretary‑General, warned that London was "cooking" and highlighted the twin crises of climate change and energy dependence. Experts such as Daniel Kebede (National Education Union) and Emma Holmberg (University of Bern) stress that ageing infrastructure—Victorian school buildings, older rail tracks and water systems—was never designed for such extremes, putting vulnerable populations at heightened risk. Looking Ahead: What the Next Days May Hold for the UK and Policy Response Forecasts suggest temperatures could linger in the high‑30s Celsius for the remainder of the week, keeping red alerts in place. Authorities are urged to accelerate capital investment for climate‑resilient upgrades, including ventilation, shading and cooling solutions for schools and hospitals. Without swift action, repeated heatwaves could increasingly disrupt essential services, strain health systems and amplify public health emergencies across the UK and wider Europe.

Nvidia's Innovative Cooling System Nvidia has introduced a warm-water cooling system that can dramatically reduce the amount of water a data center uses. The system, which uses a closed-loop coolant, can eliminate "pretty much all water usage" inside the data center. According to Nvidia's chief sustainability officer, Josh Parker, "The water consumption challenge for data centers is largely solved." The Limitations of Nvidia's Solution However, this solution only addresses water usage within the data center's walls and ignores the larger issue of water consumption outside of it, primarily in electricity generation and chip manufacturing. In fact, water use outside of the data center can double or triple the total water footprint of a facility. This means Nvidia's solution addresses about a quarter to a third of AI data centers' total water consumption. The Data Behind the Issue Fossil fuel power plants consume 2.7 billion gallons of water per day in the U.S., mostly for evaporative cooling. Natural gas power plants use 1.17 liters of water for every kilowatt-hour of electricity they generate. Coal plants are even more water-intensive, using 2.2 liters per kilowatt-hour. Renewable energy sources like wind and solar power use significantly less water, with wind using 0.01 liters and solar using 0.03 liters per kilowatt-hour. The Future Outlook Despite the growing share of renewables in electricity capacity, natural gas and coal are expected to provide more than 40% of new electricity needed to meet data center demand through 2030. Without major changes to this trajectory, data centers will continue to consume large amounts of water, regardless of Nvidia's innovations in cooling systems.

The Lead: Community Victory Against Corporate Water ExtractionWhen a severe drought struck La Calera near Bogotá, residents faced up to 15 days of strict water rationing each month while the Chingaza reservoir supplying 70% of Colombia's capital water sat at just 15% capacity. Yet a subsidiary of Coca-Cola Femsa continued extracting water to sell as bottled spring water. This injustice sparked a remarkable community campaign that resulted in a rare environmental victory in Latin America: the company's water concession was slashed to the lowest level since it began in the 1980s.The Drought Crisis: Water Scarcity in a Water-Rich RegionLa Calera, located in the Chingaza national park, is historically an area abundant in water. However, the 2023-2024 period brought one of the five strongest El Niño events on record, depleting the reservoir system to unprecedented levels. Despite being in a water-rich area, residents lost access to drinking water, faced cooking challenges, and struggled with farming as the drought stretched from April 2024 to April 2025.With rationing becoming the norm, people began questioning why they had to conserve while others seemed exempt. "With rationing, people started to reflect a bit about where the water was coming from: 'Why is there no water in my house, if we always had it on tap?'" says Javier Cifuentes, a local councillor and water rights campaigner.Corporate Water Privilege: Coca-Cola's Preferential TreatmentInvestigation revealed that Indega, a subsidiary of Coca-Cola Femsa—the world's largest Coca-Cola bottler—enjoyed privileged access to water during the crisis. The company continued filling thousands of water bottles daily to sell under the popular Agua Manantial spring water brand across Colombia.More troubling was the financial disparity: Coca-Cola's subsidiary paid just 120 pesos for a cubic meter of water to pump and sell, while households in La Calera were charged between 697 and 3,720 pesos (15p-78p), depending on their income. "This is a multinational company that has been extracting resources for 40 years practically without paying for them," says Alexander Hernández, a local resident.Community Mobilization: Grassroots Resistance Against Corporate PowerOutrage over Indega's water usage quickly turned to organized action. Community members united to oppose the company's request to renew its concession ahead of its December 2024 expiration date. With the help of Cajar, a legal non-profit organization, local leaders became formal parties in the concession's renewal process.The campaign was not without risks. Activists faced intimidation, abuse, and even death threats. "They asked us – the people – to ration water but not the companies," Hernández notes, highlighting the perceived injustice that fueled the movement.Herminia Cristancho, who heads the female-led Association of Hamlets in La Calera, has witnessed decades of corporate water extraction in the region. "They stay until they wipe out everything, then they leave and find a new victim in another country," she says. "They don't care about the state in which they leave us."Legal Victory: Historic Concession ReductionAfter more than a year and a half of activism, the community achieved a remarkable outcome. In April 2025, local authorities slashed Indega's water concession to the lowest level since the 1980s. This victory was secured through persistent legal challenges, public advocacy, and community organizing.The success was particularly significant given that Colombian law allowed Cristancho to access hundreds of documents related to Coca-Cola Femsa's water use and petition the regional autonomous corporation (CAR)—the local government body managing water concessions—to hold public meetings. Community leaders spent countless hours analyzing complex legal documents and building their case.Broader Implications: Setting a Precedent for Environmental JusticeLa Calera's victory against a multinational corporation sets an important precedent for environmental justice in Latin America and beyond. The case demonstrates how communities can successfully challenge corporate privilege when it conflicts with basic human needs, particularly in the face of climate-exacerbated water scarcity.As global heating intensifies extreme weather patterns like El Niño, similar conflicts over water resources are likely to increase. The La Calera case offers a blueprint for how communities can organize, leverage legal frameworks, and achieve tangible results against powerful corporate interests."This is what I was born for," Cifuentes reflects on the victory that came at great personal cost but secured essential water rights for his community. The success in La Calera may inspire other water-stressed communities to examine their own resource management and challenge corporate practices that prioritize profit over people.

The Revolutionary Undersea Data Centre InitiativeThe world's first wind-powered underwater datacentre has started operations off the coast of Shanghai, marking a significant advancement in sustainable technology for artificial intelligence infrastructure. This innovative project addresses China's pressing energy challenges amid its AI boom, combining renewable energy with natural cooling mechanisms to create a more efficient data processing solution.Technical Specifications of the Shanghai Lingang ProjectThe Shanghai Lingang undersea datacentre demonstration project, launched in May, represents a joint effort between HiCloud Technology and China Communications Construction, a state-owned enterprise. Located more than 6 miles (10km) off the coast of Shanghai, the facility is submerged 10 metres below the water's surface and operates with a capacity of 24 megawatts. Unlike previous underwater datacentre experiments, this project is uniquely powered by a nearby offshore windfarm, making it the first of its kind globally.Energy and Water Efficiency BreakthroughAccording to the Chinese government, the underwater datacentre reduces power consumption by more than one-fifth compared with traditional land-based datacentres. This efficiency stems from two key factors: renewable wind power and the natural cooling effect of seawater. In conventional datacentres, between 25% and 40% of total electricity demand is consumed by cooling systems that pipe chilled water around servers to prevent overheating.The underwater location also eliminates the need for freshwater supplies typically required for cooling, addressing a critical environmental concern. Traditional datacentres, known as the physical backbone of AI, have come under increasing scrutiny for their substantial water usage, with the United Nations University Institute for Water, Environment and Health warning that the water footprint of datacentres could reach 9.3 trillion litres by 2030.Investment and Economic ImplicationsThe Shanghai Lingang datacentre received 1.6 billion yuan of investment (£177 million), demonstrating China's commitment to advancing sustainable AI infrastructure. This financial commitment reflects the strategic importance of data centres to China's economic development, with the government having made support for AI a central pillar of its economic strategy.China released an AI action plan last year that called for the acceleration of datacentre construction, and has pledged that clean energy supplies for AI infrastructure will be "significantly increased" by 2030. The project's location in Lingang, a hi-tech free-trade zone that also hosts a Tesla gigafactory, underscores the integration of this technology within China's broader innovation ecosystem.Global Context and Competitive AdvantageWhile China is not the first country to experiment with underwater datacentres—Microsoft launched a pilot in the waters around Orkney, Scotland in 2018—the Shanghai project represents the first commercial deployment powered by offshore wind. Dr. Hanjiang Dong of Hong Kong Polytechnic University noted that "Microsoft was earlier in proving the concept, while China moved further on commercial deployment because it was able to bring together market demand, industrial capability, marine engineering and policy support more quickly into a commercial project."This technological advancement positions China as a leader in sustainable data infrastructure development, potentially influencing global standards for energy-efficient AI computing as the industry continues to expand.Environmental Considerations and Future OutlookDespite its benefits, underwater datacentres present potential environmental risks, including disturbance of sediments and localized heating of seawater. Experts suggest these concerns are manageable but require ongoing monitoring. Professor Rick Stafford, a marine biologist at Bournemouth University, commented that "while the cooling using seawater will result in some localised elevated temperatures, these will not be far reaching."As China continues to invest in and develop this technology, the success of the Shanghai Lingang project could pave the way for more underwater datacentres globally, potentially transforming how we approach the energy and water challenges of expanding digital infrastructure. The integration of renewable energy with natural cooling mechanisms may become a blueprint for sustainable data processing in the coming decades.

The Datacenter Dilemma Kevin O'Leary, a flamboyant venture capitalist and co-host of Shark Tank, is at the center of a climate controversy in Utah. He is a key backer of a plan to build one of the world's largest datacenters in a parched corner of the state. The Scale of the Project The proposed datacenter, known as Stratos, will span 40,000 acres of rural Utah and is expected to double the entire energy use of the state. The project has sparked fierce backlash from local residents, who are concerned about rising power bills and water demand on the shrinking Great Salt Lake. The Water Usage Conundrum The datacenter's massive water usage is a major concern, with estimates suggesting it will require 73 billion gallons of water to cool the computers by 2028. This has raised questions about the sustainability of datacenters, particularly in areas with limited water resources. The Impact on Local Communities The grassroots revolt against datacenters is gaining momentum, with many communities expressing concerns about the environmental impact. The controversy has also sparked a bipartisan response, with some politicians calling for the projects to be downsized or reevaluated. The Future of Datacenters As the demand for datacenters continues to grow, driven by the expansion of the artificial intelligence industry, the question remains: what cost to our environment are we willing to tolerate? The debate over datacenters highlights the need for a more sustainable approach to resource management and energy production.

The Environmental Advocate's New MissionEnvironmental activist Erin Brockovich, famous for her legal battle against Pacific Gas & Electric that was dramatized in a film starring Julia Roberts, has turned her attention to data center transparency. Brockovich has launched a new initiative aimed at bringing more openness to data center construction and their impact on surrounding communities.Crowdsourced Data Center Mapping ProjectBrockovich recently unveiled a website featuring a map of data centers across the United States. The map is described as "a work in progress" that includes data centers reported by members of the surrounding community. This grassroots approach allows local residents to document and share information about data center projects in their areas.Community Concerns and Transparency IssuesIn a Substack post, Brockovich revealed that after calling for reports of data center-related issues in April, she received nearly 4,000 submissions in the first month alone. The single most common concern across these submissions was not noise, water usage, or rising utility bills, but rather transparency."The one word that keeps appearing in submission after submission: transparency," Brockovich wrote.Industry Impact and Community RelationsBrockovich clarified that she is not "making a blanket argument against data centers" or AI technology. Instead, her initiative targets specific problematic practices: projects announced after permits are already secured, developers who don't return calls, and local officials who sign non-disclosure agreements before their neighbors even know a project is being considered.This pattern of limited community engagement has created significant friction between data center developers and local residents in many areas where these facilities are being constructed.Future of Data Center Development and Community RelationsBrockovich's initiative comes at a time when data center construction is accelerating to meet growing demand for cloud computing and AI services. Her crowdsourced mapping project may pressure both developers and local governments to adopt more transparent practices in the planning and approval of these facilities.The environmental activist's involvement suggests that community opposition to data centers, particularly when perceived as lacking transparency, could become a significant factor in the siting and approval of future projects.

The Critical Infrastructure Strain in the UK's South East South East Water has issued an urgent directive to residents in Kent and Sussex, requesting that they limit water usage strictly to essential purposes—drinking, washing, and cooking. This measure comes in response to a critical infrastructure failure triggered by record-breaking temperatures that have overwhelmed supply networks and caused outages for hundreds of homes over the past three days. Managing Record Demand and Supply Gaps Despite proactive measures, including increasing output at water treatment works and deploying a 24/7 fleet of tankers to replenish the network, the sheer volume of demand has outpaced the system's capacity. The utility company has noted that due to the nature of supply networks, customers on higher ground or at the extremities of the lines are experiencing low pressure or interruptions, particularly during peak usage times. Quantifying the Crisis: Usage Statistics The scale of the surge is alarming. On Monday alone, the company recorded a consumption of 670m litres, which is nearly 100m litres above the seasonal average. This data highlights the vulnerability of current infrastructure to climate extremes. Furthermore, the statistics underscore a broader national issue: British citizens consume an average of 140 litres of water per day, a figure that significantly exceeds European standards and targets a reduction to 122 litres by 2038. Customer Backlash and Government Pressure The situation has sparked immediate public frustration, with social media platforms ablaze with criticism directed at the company. Customers have expressed anger over the timing of the appeal during a heatwave. Simultaneously, the government faces mounting pressure to launch a nationwide campaign to address the looming threat of a 5bn litre daily shortage by 2055. Future Outlook: Navigating a Water-Scarce Future As the extreme weather is expected to persist for several more days, the likelihood of temporary bans on non-essential usage (such as hosepipes) increases. This incident serves as a stark warning of the long-term challenges facing water management in the UK, necessitating urgent investment in infrastructure and a cultural shift in water conservation habits.

Progressive lawmakers Bernie Sanders and Alexandria Ocasio-Cortez have unveiled a bill to place a moratorium on the construction of AI datacenters in the US. The proposed pause aims to ensure the AI boom benefits workers, protects the environment, and does not harm communities.The bill's introduction comes amid growing concerns about the rapid buildout of AI infrastructure and its impact on energy consumption, electricity bills, and the climate crisis. Sanders and Ocasio-Cortez argue that a temporary ban would give the US government time to create strong federal safeguards for AI.“AI and robotics are creating the most sweeping technological revolution in the history of humanity,” Sanders said. “The scale, scope, and speed of that change is unprecedented. Congress is way behind where it should be in understanding the nature of this revolution and its impacts.”The proposal has gained traction, with at least 11 states considering similar policies. Advocacy groups, including Food and Water Watch, have also called for a federal datacenter moratorium, citing concerns about the sector's impacts on electricity bills and the climate crisis.The bill's supporters argue that datacenters' massive energy consumption and water usage have sparked controversy, especially in drought-ridden areas. If current trends continue, datacenters may account for nearly half of all US emissions from the power sector.“We cannot sit back and allow a handful of billionaire Big Tech oligarchs to make decisions that will reshape our economy, our democracy and the future of humanity,” Sanders said. “We need serious public debate and democratic oversight over this enormously consequential issue. The time for action is now.”