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The Global Obesity Landscape: Not a Uniform EpidemicA continuing rise in obesity around the world is not inevitable, research suggests, with rates in some countries levelling off or potentially in decline. Researchers say focusing on what has been described as a global epidemic of obesity hides large variations in trends across different countries, sexes and age groups.Majid Ezzati, a professor of global environmental health at Imperial College London and author of the study, said: "I think the thing that's really important is this diversity exists even across countries that have really similar economic, environmental, technological features. So countries may look the same on the surface of it but obesity looks different."Comprehensive Analysis Reveals Complex PatternsWriting in the journal Nature, the international team, which involved a network of almost 2,000 researchers, described how for each country they calculated the change in the prevalence of obesity each year between 1980 and 2024. They drew on data from 4,050 population-based studies involving 232 million participants aged five years and above.They found that the prevalence of obesity increased in almost all countries over the 45-year period. However, in most high-income countries, a rapid rise in the prevalence of obesity has been replaced by a slower increase, a plateau, or a potential decline.Regional Variations in Obesity PrevalenceThe rate of growth in obesity is slowing in adults in the US and UK, reaching a prevalence of 40-43% and 27-30% respectively in 2024. Obesity is increasing steadily in Finland, has plateaued in Germany and may have started to decline in France, where 24-25%, 20-23% and 11-12% of adults respectively were thought to have the condition in 2024.Slowdowns were often seen in children and adolescents before adults. For the former group, the slowdown started as early as 1990 in Denmark and rates stabilised in most high-income countries by the mid-2000s. Obesity has plateaued in boys and girls in the UK, US, Germany and Japan at prevalences of 10-12%, 20-23%, 7-12% and 3-7% respectively.Meanwhile, obesity among young people and adults in many low-income and middle-income countries continues to rise and in some cases this is accelerating.Understanding the Drivers Behind Divergent TrendsThe team say it is important now to unpick what is behind the trends in different countries. The situation is complex: while there may be shared reasons for obesity, such easy access to unhealthy foods or a decrease in physical activity, the team say country-specific factors rooted in social, economic and policy considerations could also be important, from perceptions around body image to the presence or absence of interventions such as healthy school meals.Naveed Sattar, a professor of metabolic medicine at the University of Glasgow, who was not involved in the work, said the study highlighted how obesity trends were diverging sharply across countries. "English-speaking nations are doing particularly poorly, with the UK now among the countries with the highest obesity levels worldwide," he said.Sattar said it was encouraging that some countries appeared to have reached a plateau in obesity rates. "Understanding what has worked in those settings is crucial as it could help shape more effective public health strategies for the UK," he said, although he noted there could be country-specific aspects or customs at play.Future Outlook and Potential InterventionsHe said the rapid rise in obesity across many developing countries was especially concerning, not least as it could result in increases in diabetes and cardiovascular conditions.He added: "Looking ahead, it will be important to see how wider use of effective weight-loss medicines affects obesity trends, particularly in the UK and the United States. Recent signs of stabilisation in the USA suggest there may be room for cautious optimism. Combining evidence-based medicines with strong public health measures could begin to shift obesity rates in the right direction."

New research from the International Data Center Association (IDCA) reveals that datacentres are now responsible for roughly 6% of electricity consumption in the United Kingdom and the United States, intensifying public and political scrutiny over the sector’s rapid energy growth.Datacentre Power Demand Hits 6% of UK and US GridsThe study notes a 15% worldwide increase in datacentre electricity use over the past two years, driven by the surge in AI workloads and internet traffic. Annual global investment in new facilities is approaching $1tn (£740bn), equivalent to nearly 1% of the global economy. In the UK, datacentre electricity share has risen to 5.9%, while the US sits at 6%, far above the global average of 2%. Smaller nations such as Singapore and Lithuania face even higher pressures, with datacentres consuming 19% and 11% of their national grids respectively.Financial and Energy Metrics Highlight Rapid GrowthGlobal investment: ~$1tn in 2025UK grid‑connection queue: grew 460% in H1 2025US “zombie” services: account for 13% of datacentre load, equating to over 3 GW of wasted powerProjected UK demand: could quadruple by 2030These figures align with the International Energy Agency’s estimate that global energy use by datacentres rose 17% in 2025, outpacing overall electricity demand growth of 3%.Community Pushback and Policy Implications Across NationsThe IDCA warns that once a country’s datacentre footprint reaches the 5%‑6% threshold, “significant community and political pushback” becomes inevitable. In the UK, activists and groups such as Greenpeace UK have warned of an “unchecked AI boom” leading to higher energy bills, water‑stress, and renewed reliance on fossil fuels. The report calls for:Greater transparency from tech firms on future datacentre plansMandatory environmental impact assessmentsA ban on new polluting power plants dedicated to AI workloadsAdditionally, the study highlights emerging security concerns, noting that recent attacks on datacentres in the Middle East have underscored the need for integrated cyber‑physical protection strategies.Outlook: Regulation, Transparency, and Security Challenges AheadLooking forward, the IDCA predicts that pressure will mount for:Stricter national grid connection policies to curb the 460% surge in pending requestsIndustry‑wide standards to eliminate “zombie” services and improve energy efficiencyCoordinated security frameworks that address both cyber threats and physical vulnerabilitiesIf policymakers act swiftly, the sector could mitigate its environmental footprint while sustaining the growth of AI and cloud services. Failure to do so may trigger broader societal resistance and accelerate regulatory clampdowns.

Executive Overview: Syringe‑Smuggled Ants in NairobiThe Guardian article reveals that Nairobi is emerging as a nexus for the illegal trade of giant harvester ants, which are being hidden inside medical syringes to evade detection. This unconventional smuggling method highlights a growing challenge at the intersection of wildlife trafficking and public‑health safety.How Syringes Enable the Giant Harvester Ant TradeAccording to the report, traffickers exploit the small, sealed nature of syringes to conceal live ants during transport. The method allows large numbers of insects to be moved discreetly through customs and local markets, bypassing traditional inspection procedures.Scale of the Illicit Ant MarketWhile precise figures are not disclosed, the article notes a noticeable increase in seizures and police investigations related to ant smuggling in Nairobi.Local markets are reportedly offering the insects for purposes ranging from traditional medicine to exotic pet trade.Implications for Public Health and BiodiversityThe practice poses dual risks: the potential spread of ant‑borne pathogens to humans, and the ecological impact of removing a keystone species from its native habitats. Kenyan authorities are urged to strengthen bio‑security protocols to mitigate these threats.Future Outlook: Regulation and EnforcementExperts cited in the Guardian piece suggest that tighter customs inspections, public awareness campaigns, and regional cooperation will be essential to curb the syringe‑based trafficking network. Ongoing monitoring will determine whether Nairobi can shift from a trafficking hub to a model for effective wildlife‑trade enforcement.

The World's Longest Football DerbyCarlisle and Barrow will play each other next season in the Cumbrian derby in the National League. The clubs are located at opposite ends of Cumbria and the distance between the two grounds is some 78 miles by car. But this is not the greatest distance between two teams involved in a 'derby'.When considering derbies, we are looking for matches between teams that are linked based upon their proximity or geography, rather than simply historical rivalries like the 'clásico' between Real Madrid and Barcelona.UK Derbies: The Cumbrian ContenderWithin the UK, the Cumbrian derby certainly looks the furthest derby by distance. If we are staying in England, the closest we can get to 78 miles is the A49 derby between Shrewsbury Town and Hereford United, separated by 51 miles, although it should be said that the two teams have not met since the latter was dissolved in 2014.In England, thoughts immediately go to Crystal Palace and Brighton, dubbed the M23 derby, but a quick search reveals that Selhurst Park is a mere 46 miles from the Amex Stadium. It is also 46 miles that separate the stadiums of Plymouth Argyle and Exeter City, the Devon derby. Just behind are Ipswich and Norwich – the East Anglian derby (AKA El Tractico or the Old Farm) – with Portman Road and Carrow Road 45 miles apart.International Long-Distance DerbiesFarther afield, we must mention the derby between Persib Bandung and Persija Jakarta, who take part in the Indonesia derby, or Laga Klasikal as it is locally known, with Persib's Gelora Bandung Lautan Api Stadium lying 108 miles away from Persija's Jakarta International Stadium in Indonesia's capital.Italy is fertile ground for a host of famous derbies, and it is here that we find some of the longest-distance derbies. Of course there is the Derby d'Italia between Milan and Juventus, with 85 miles separating San Siro and Juve's Allianz Arena in Italy's north-west. The Derby di Sicilia between Palermo and Catania spans a whopping 134 miles across the breadth of Sicily, while the Derby delle Isole (Derby of the Islands) between Palermo and Sardinian club Cagliari goes even further – a full 250 miles across the Tyrrhenian Sea.The Champion: New Zealand's 386-Mile DerbyOur winner, though, comes from New Zealand's North Island. With Auckland FC only entering the A-League Men in 2024-25, the New Zealand derby between themselves and Wellington Phoenix is still very much in its infancy but has already blossomed into something substantial. In February, just the sixth edition of the derby, a comical own goal from Wellington goalkeeper Josh Oluwayemi sparked a 5-0 thrashing by Auckland, prompting Phoenix coach Giancarlo Italiano to resign immediately after the defeat. With 386 miles between the two grounds, the NZD is our clear winner.The Evolution of Geographic DerbiesThe existence of such long-distance derbies challenges our traditional understanding of what constitutes a local rivalry. In an era where football has become increasingly globalized, these geographic matchups represent unique connections between communities separated by vast distances. The New Zealand derby, in particular, showcases how even in a country with a relatively small population, football can create intense rivalries across significant geographical divides.The Future of Long-Distance DerbiesAs football continues to evolve, we may see more long-distance derbies emerge, particularly in regions with expanding leagues or where new clubs are formed to serve underserved areas. The New Zealand derby between Auckland and Wellington Phoenix is a prime example of how modern football infrastructure and scheduling can create meaningful rivalries regardless of distance. With the increasing popularity of travel and fan engagement, these long-distance derbies may become even more significant in the future of football culture.Double Winners in FootballDeji Elerewe has won the title with both Bromley (League Two) and Lincoln (League One) this season. Has any other player managed the same feat?We covered this answer 10 years ago in a previous Knowledge, but regular contributor Dirk Maas has come in clutch with some additions, although he does clarify that he has limited his search to the top five leagues in Europe in this century.There are several examples of players winning titles with different teams in the same season, including:Jonas Urbig with Köln (2. Bundesliga) and Bayern Munich (Bundesliga) in 2024-25Leigh Griffiths with Celtic (Scottish Premiership) and Wolverhampton (League One) in 2013-14Urby Emanuelson with Ajax and Milan in 2010-11Daniel Amartey with Leicester City and FC Copenhagen in 2015-16Timothy Weah with Paris Saint-Germain and Celtic in 2018-19Khvicha Kvaratskhelia with Napoli and PSG in 2024-25There are also alternative cases where seasons happen at different times of year, such as David Beckham achieving this by picking up an MLS winner's medal with LA Galaxy and a Ligue 1 winner's medal with Paris Saint-Germain in 2012-13.

The Retail Surveillance ShiftLive facial recognition (LFR) is no longer the exclusive domain of police forces; it is rapidly becoming a standard tool for the private sector. Driven by a surge in retail theft, supermarkets and corner shops are deploying AI systems to scan crowds in real-time, aiming to identify known offenders instantly.The Perils of Algorithmic Bias in Public SpacesWhile the technology promises a safer shopping environment, the Guardian’s analysis reveals a troubling side effect: the prevalence of false positives. Shoppers are frequently being wrongly accused of crimes by AI systems, a mistake that can have immediate and lasting social consequences.False Accusations: Individuals are flagged by algorithms without human verification, leading to public embarrassment and legal complications.Corrective Challenges: Once an error is made, it is surprisingly difficult for victims to set the record straight, often requiring significant effort to clear their names.Balancing Security with Civil LibertiesAs more police forces look to adopt this technology, the line between public safety and surveillance capitalism blurs. The expansion of LFR into everyday retail spaces suggests a future where anonymity in public is increasingly difficult to maintain, raising critical questions about the balance between crime prevention and individual rights.

Survey Reveals Strong Patriotic Sentiment Among UK Millionaires The research, commissioned by Patriotic Millionaires UK and carried out by Survation, asked 501 individuals with assets over £1 million (excluding their homes) about their attachment to the United Kingdom and their willingness to fund public services through higher taxation. Key Numbers: Pride, Concern, and Tax‑Paying Willingness 88% of respondents agreed with the statement “I am proud to live in the UK”. 75% said they would be willing to pay more tax to ensure social, cultural, and economic assets are properly funded. 64% support increasing taxes on capital and assets of the wealthiest to reduce the overall tax burden. 43% identified doctors and other qualified health staff as the group whose departure would hurt the country most. 9% were most worried about other millionaires leaving the UK. Other concerns included young people and business owners, each cited by 19% of respondents as potential losses to the nation. Implications for UK Fiscal Policy and Political Landscape The findings arrive as the Labour Party grapples with internal leadership questions following disappointing local election results. Proposals from candidates such as Andy Burnham and Wes Streeting include raising capital gains tax to fund a 2p cut in national insurance. The willingness of a sizable share of the ultra‑wealthy to back higher taxes could provide political cover for such measures. Critics have pointed to reports of a “millionaire exodus”, but the survey notes that the alleged 16,500‑person outflow cited by Henley & Partners represents only 0.5% of the UK’s three‑million millionaires. What This Means for Future Tax Debates and Migration Trends If policymakers take the survey at face value, future tax reforms may encounter less resistance from the very demographic they target. Moreover, the emphasis on retaining medical professionals—highlighted by the departure of over 4,000 doctors in 2024—suggests that addressing sector‑specific retention could become a fiscal priority alongside broader tax policy. Analysts will watch whether the Labour leadership leverages this data to counter narratives of a fleeing elite and to justify progressive tax proposals ahead of the next general election.

The LeadA new poll by the AFL-CIO reveals that US workers overwhelmingly support pro-union policies on artificial intelligence, viewing labor unions as the most reliable protectors against AI's potential workplace impacts. The survey shows strong support for human oversight, transparency, and accountability in AI implementation.Union-Backed AI Policies Garner Strong Worker SupportThe poll, conducted with David Binder Research from April 14-22, surveyed 1,588 workers across the United States and found remarkable consensus on AI workplace policies. More than nine out of ten workers surveyed expressed support for policies that labor unions may advocate for, including:95% support requiring a human to be the final decision maker on issues affecting individual workers and their employment92% support advanced guardrails against harmful uses of AI in workplaces94% believe workers should be informed if AI is monitoring their work75% support expanding opportunities for workers to form unions to protect their jobs from AITrust in Unions vs. Other InstitutionsWhen asked which institutions they trust most to protect workers from AI, 38% of workers selected labor unions, significantly more than any other option. Only 17% chose Democrats, 10% Republicans, 6% employers, and 18% selected none of the options. This data indicates a clear preference for worker representation through collective bargaining rather than traditional political channels or corporate oversight.Current AI Implementation and Worker ConcernsThe poll revealed a significant gap between AI implementation in workplaces and transparency to workers. Only 7% of workers reported that their employers disclosed how and when their work is monitored by AI, while 70% said their employers have not disclosed this information. Despite this lack of transparency, 78% of workers rated it as extremely or very important that action be taken to protect them from potential AI harms.Real-World Examples of AI Protection EffortsThe poll results align with recent labor actions where workers have successfully negotiated AI protections in collective bargaining agreements. Anna Iovine, former unit chair of the Ziff Davis Creators Guild, noted how their union won AI protections in their 2024 contract, including editorial integrity safeguards, transparency requirements, and protections against layoffs due to AI implementation. Similarly, Hannah Drummond, a registered nurse with National Nurses United, fought to include AI provisions in her contract to ensure technology affecting patient care would require union approval and wouldn't undermine professional judgment.Future of Labor Relations in the AI Era"These results make it clear: our Workers First Initiative on AI is not just a set of principles, but a mandate to deliver," said Liz Shuler, president of the AFL-CIO. The strong worker support for union-backed AI policies suggests that labor movements will play a central role in shaping how AI is implemented in workplaces. As AI continues to transform industries, collective bargaining agreements may become the primary mechanism for ensuring technology serves workers rather than displacing them. The poll indicates a clear mandate for labor unions to take the lead in establishing workplace AI governance frameworks that prioritize human oversight, transparency, and worker protections.

Pentagon Reveals Updated $29 bn Iran War Price TagThe Department of Defense announced that the ongoing US‑Israel war with Iran has reached a total cost of $29 bn, a rise from the $25 bn figure disclosed in late April. The update was delivered during a Senate Armed Services Committee hearing where Pentagon chief Pete Hegseth and comptroller Jules Hurst testified.Senate Hearing Unveils Revised War Cost FiguresDuring the Tuesday hearing, Hurst explained that the increase reflects “updated repair and replacement of equipment … and also just general operational costs.” The Pentagon also addressed lingering questions about damage to U.S. bases in the Middle East and the status of its munitions stockpile.Financial Implications: $29 bn vs. Earlier $25 bn EstimateOriginal estimate (April): $25 bnRevised estimate (May): $29 bnIncrease attributed to: equipment repairs, replacement, and operational expensesExperts argue the true cost could be substantially higherThe $4 bn jump represents a 16% rise in the war’s projected price tag, tightening an already strained federal budget that includes a historic $1.5 trillion defense funding request.Political Ramifications for Trump Administration and MidtermsThe cost surge arrives as the war’s popularity wanes among U.S. voters, threatening Republican prospects in the November midterm elections. President Donald Trump has labeled the current pause in fighting “on life support” and “unbelievably weak,” while Hegseth insisted the Pentagon “has plenty of what we need” regarding munitions.Congressional leaders are now faced with reconciling the war’s financial burden against other domestic priorities, such as the recent 3.8% annual rise in the consumer price index.Outlook: Potential Escalation, De‑escalation and Congressional ScrutinyHegseth outlined three contingency plans: “escalate if necessary,” “retrograde if necessary,” and “shift assets.” The Pentagon’s next steps will likely be shaped by the upcoming Trump visit to China and the Joint Chiefs’ emphasis on countering Chinese influence.With the war’s economic toll under heightened scrutiny, lawmakers may demand more granular accounting, while the administration balances diplomatic overtures with the possibility of renewed combat operations.

The Lead: Israel's Alleged Covert Presence in IraqA recently published report has revealed allegations that Israel operated a secret intelligence outpost in Iraq during the period of conflict with Iran, potentially altering the understanding of Middle Eastern alliances and covert operations in the region.The Event Details: Uncovering the Covert OperationsThe report, which has not been independently verified, suggests that Israel established and maintained a hidden facility within Iraqi territory while the country was engaged in conflict with Iran. This alleged operation would represent a significant intelligence achievement for Israel, potentially allowing it to monitor activities and gather intelligence in a region where its presence is typically restricted.The Impact Analysis: Geopolitical RamificationsIf confirmed, these allegations would have profound implications for Middle Eastern geopolitics. They could indicate deeper covert cooperation between certain Middle Eastern nations and Israel despite public positions of non-engagement. Such revelations might also impact current diplomatic relations and reshape regional alliances, potentially influencing ongoing peace negotiations and security arrangements.The Prediction: Future Intelligence and Diplomatic LandscapeShould these allegations gain traction, they may lead to increased scrutiny of intelligence operations in the region and potentially prompt diplomatic responses from affected nations. The revelation could also influence future security strategies of Middle Eastern countries, potentially leading to enhanced counter-intelligence measures and more transparent diplomatic positioning regarding relations with Israel.