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A recent study has found that sperm deteriorates over time as it remains in the body, leading researchers to suggest that men who ejaculate more frequently may have better sperm quality.The study, which combined 115 human studies involving nearly 55,000 men and 56 studies on non-human species, found that the longer men went without sex, the more their sperm showed signs of DNA damage and oxidative stress, and the more tests rated the sperm as less viable and poorer swimmers.The World Health Organization (WHO) recommends men abstain from ejaculating for two to seven days before giving sperm for fertility tests or IVF, but the guidelines were designed to obtain the highest sperm count rather than prioritizing the best quality sperm.Dr. Krish Sanghvi, lead author of the study, said: "In men, the negative effects we found on sperm DNA damage and oxidative damage were large-ish, so we are confident that this is a biologically meaningful and important effect."The study's findings suggest that clinicians and couples should reconsider whether long abstinence is always good, as abstinence leads to deterioration in sperm quality.For couples trying to conceive naturally, a balance between quantity and quality needs to be struck, with abstaining for too long or too little potentially affecting sperm quality and quantity.Experts say that for assisted reproductive technology (ART) treatments, it's having the freshest, most healthy sperm that is probably more important, and that the two to seven days abstinence rule may not be as crucial when IVF treatment is taking place.

The chasm between Silicon Valley's tech elite and everyday people is growing ever larger, as the industry doubles down on artificial intelligence. Nvidia's CEO Jensen Huang predicts $1tn in sales by 2028, a staggering figure that equates to 3% of the entire US yearly GDP.Meanwhile, 65% of Americans don't use AI in their work at all, according to Pew Research. The survey also shows that Americans are wary of AI and believe both political parties are regulating it poorly. Meta is reallocating huge amounts of its spending to AI, cutting jobs and scaling back metaverse ambitions. The company's Reality Labs division has recorded losses of $80bn since 2020.In a stark illustration of the divide, Mark Zuckerberg is building an AI agent to perform his work as CEO of Meta. The AI industry is splitting away from the lives of everyday people, with exclusive polling conducted for the Guardian finding that twice as many Americans believe their financial security is getting worse than better.In other tech news, Tesla's Cybertruck has been involved in several fiery crashes, resulting in fatalities and lawsuits. The vehicle's unique design and materials have raised safety concerns, with experts alleging that the truck's design led to these worst-case scenarios.

Around 15 years ago, Ashley Markle was introduced to a culinary curiosity that would later become a global phenomenon. While staying at her aunt's house, she encountered a small, plastic-wrapped biscuit that would forever change her perception of cookies. What began as an unknown airline snack evolved into one of the fastest-growing biscuit brands in the US, with Markle becoming an unwitting early adopter of what would become a cultural movement.The spiced caramel biscuit, created in 1932 by Belgian company Lotus, has experienced remarkable peaks in popularity over the past decade. From being described as 'crack in a jar' in 2014 to becoming a staple in freakshakes in 2016, the brand has consistently found new ways to capture consumer interest. The pandemic home-baking boom in 2021 propelled Biscoff into social media stardom, with chef Jon Watts demonstrating multiple Biscoff recipes on daytime television.In January 2026, Biscoff experienced another viral surge, particularly on TikTok and Instagram, where users obsessively shared recipes for a 'Japanese cheesecake' featuring the biscuits. Markle, a social media creator specializing in snack recipes, has seen her Biscoff-related content accumulate millions of views, including a cheesecake recipe that garnered over 4 million views and a two-ingredient cookie recipe with 5.6 million views.The phenomenon extends beyond social media. A teacher named Raj developed such an affinity for Biscoff that he purchased multiple boxes, declaring: 'I'd smoke Biscoff if I could.' At his school, colleagues use the biscuits as incentives for students to attend tutoring sessions, demonstrating the brand's cultural penetration.Food industry experts attribute Biscoff's success to several converging trends. Lisa Harris, co-founder of food consultancy Harris and Hayes, explains: 'Biscoff isn't a single trend in itself, more an expression of various converging trends.' The brand taps into nostalgia, accessible indulgence, and versatility, allowing it to appear in everything from drinks to ice cream to desserts.The brand's partnerships with other companies exemplify modern 'collab culture', with Harris noting that products with distinctive flavors often develop a life of their own among consumers. 'Fans run with it and feel as if they have ownership over the product as much as the brand itself does,' she observes.Lotus Bakeries has responded strategically to the social media buzz. The company is removing the Lotus embossing from biscuits, replacing it with the word Biscoff to better resonate with younger shoppers. Niamh Leonard-Bedwell, fast-moving consumer goods editor at The Grocer, notes: 'In the week to January 17, their volume sales were up 30% on the same time last year.'The business impact has been substantial. In its 2025 annual results, Lotus announced a 10% revenue increase, with more than half coming from the Biscoff brand. The company has expanded internationally with factories in the US and Thailand, with founder's grandson Jan Boone declaring: 'We want to conquer the world.'Despite its sweet reputation, Biscoff is venturing into savory territory with recipes like prawns in Biscoff sauce and creamy Biscoff duck breast. However, chef Jon Watts remains skeptical about these applications, preferring the biscuit's traditional uses in desserts and treats.Industry analysts believe Biscoff's universal appeal will sustain its popularity. Unlike divisive trends like matcha, Biscoff offers a 'quite universally likable flavor' that balances novelty with familiarity. As Kiti Soininen of Mintel notes: 'If it's that sort of safe adventure, where it's got that newness, that freshness, but it's pairing that with familiarity – that hits the mark with a lot of people.'Despite growing concerns about ultra-processed foods, Biscoff's traditional positioning may insulate it from criticism. There's a disconnect between how products are classified and consumer intuition, with Soininen observing: 'If my grandmother can have bought this then it can't be truly ultra-processed.'With retailers developing Biscoff-inspired products including porridge, tea, popcorn, and breakfast cereal, the trend shows no signs of abating. As Markle predicts: 'I don't see anybody deciding that they don't like Biscoff any more.'

The UK's Competition and Markets Authority (CMA) has concluded its investigation into vet chains, finding that pet owners have overpaid roughly £1bn in fees over five years. This significant finding has led to the implementation of new rules aimed at making the market work better for consumers.The veterinary sector has undergone a rapid transformation, with 60% of vet practices now wholly or partly owned by one of six large groups, three of which are owned by private equity investors. This shift has resulted in higher prices for pet owners, with large veterinary groups (LVGs) charging more for their services.The CMA's investigation revealed that pet owners are willing to pay more for services at LVGs, despite a strong preference for independent vets. The new rules will require vets to publish prices, itemize bills, and clearly indicate when a practice is part of a chain. Additionally, the fee for writing a prescription will be capped at £21, and complaints processes will be strengthened.The Veterinary Surgeons Act of 1966 is set to be updated, with proposals including the creation of a new regulator with powers over businesses and individuals, as well as protection of the job title 'veterinary nurse'. These changes aim to address the lack of transparency and accountability in the veterinary sector.The overhaul of the UK veterinary market serves as a lesson in how an old-fashioned market can be swallowed up by larger, more profit-oriented businesses. The CMA's review of the veterinary sector is part of a broader effort to examine private dentistry and other markets.

Emmanuel Gregoire, representing a coalition of the Socialist Party, Greens, and Communists, has been elected mayor of Paris, marking a significant victory for the traditional left in France's municipal elections. The 48-year-old former deputy to outgoing mayor Anne Hidalgo secured the capital's top office with an estimated margin of 51 to 53 percent of the vote, defeating his conservative rival Rachida Dati. Gregoire campaigned on a platform positioning Paris as a 'city of refuge' and a 'bastion against the right and the far right.'While the left celebrated victories in major southern hubs, the far-right National Rally (RN) achieved its most significant breakthrough in decades. Despite falling short of taking control of the key cities of Marseille and Toulon, the RN secured a major win in the southern city of Nice, with former mainstream conservative Eric Ciotti elected as mayor. National Rally leader Jordan Bardella hailed the results as the party's biggest electoral success in its history, noting victories in local constituencies where the party had previously held little presence.The political landscape reflects a complex shift ahead of the 2027 presidential election. In Marseille, Socialist Mayor Benoit Payan was re-elected with 56.3 percent of the vote, a result bolstered by the withdrawal of a hard-left candidate from France Unbowed. Meanwhile, former Prime Minister Edouard Philippe delivered a better-than-expected performance in Le Havre, strengthening his potential candidacy for the presidency. The election results underscore a fragmented electorate, with low turnout—hovering just above 48 percent—suggesting voter disengagement despite the high stakes of the political battle.

The UK government has instructed HS2 Ltd to assess the feasibility of operating its high-speed trains at reduced speeds, aiming to curb escalating costs and facilitate an earlier launch in the 2030s. The proposal involves limiting train speeds to 186mph (300km/h), a significant decrease from the initially planned 224mph. Potentially billions of pounds in savings could be achieved through this adjustment, which would bring the project more in line with typical European high-speed rail standards. Currently, most UK trains operate at a maximum speed of 125mph, while HS1 trains serving Kent and the Channel tunnel reach up to 186mph. Transport Secretary Heidi Alexander has commissioned HS2 Ltd to report back on the potential savings from slower trains before the summer recess. This development follows a review by HS2's new CEO, Mark Wild, who has been working to regain control of the project's costs and delays. Alexander acknowledged the challenges facing the project, stating that previous plans significantly underestimated the work required. Despite these challenges, she praised Wild's leadership and noted that HS2 is now making progress, having completed the excavation of all 23 miles of deep tunnels needed for the initial stage of the railway. The project's overall budget is expected to be reassessed and restated in 2026 prices, with predictions that it will exceed £100bn due to soaring inflation and rising labour and steel costs. As of now, the total expenditure stands at £46.2bn at current prices. Government sources suggest that the original design for the world's fastest railway was “gold-plated” and “needlessly overspecced”, contributing to the cost overruns. Wild emphasized that speed was never the primary objective, and the railway's focus should be on delivering better journeys, increased network capacity, and economic growth.

The England and Wales Cricket Board (ECB) has taken a significant risk by retaining Brendon McCullum as men's head coach and Rob Key as team director following a dismal Ashes series. The pair's contracts and the board's decision have sparked widespread criticism.McCullum's contract runs until the end of 2027, and terminating it would come at a substantial cost. The ECB appears to have opted for continuity, despite England's 4-1 defeat in Australia, which exposed several issues with the team's approach and strategy.The Test team holds a special place in the hearts of English cricket fans, and the recent performance has left many feeling frustrated. The ECB's decision to stick with McCullum and Key is seen as a bold move, but it also means that the duo must now work to regain the trust and support of the public.Richard Gould, the ECB chief executive, and Richard Thompson, the ECB chair, have acknowledged that the decision will not be popular. However, they seem committed to their strategy, citing a 25% increase in Test viewership over the past four years.The ECB's plans to revamp the team include introducing a bowling guru and a new selector. However, some critics argue that these changes do not go far enough to address the team's shortcomings. Rob Key emphasized the need for greater accountability for poor performance, but the specifics of how this will be implemented remain unclear.The team's performance under McCullum and Key has been inconsistent. While there have been some notable victories, the team has struggled in major Test series against Australia and India. The Ashes campaigns, in particular, have been approached with a casual attitude, with England only becoming more determined after falling behind 2-0 in 2023.To regain the public's trust, England must demonstrate improvement in several areas, including better engagement with the domestic game, more merit-based selection, and a clearer understanding between Ben Stokes and McCullum. The team's ability to adapt and evolve will be crucial in the coming months.

Thomas Tuchel, England's manager, is optimistic about the team's chances in the World Cup, thanks in part to their base in Kansas City. The intimate boutique hotel, the Inn at Meadowbrook, with just 54 rooms, is seen as an ideal setting for the squad to bond and prepare for matches. The hotel, located on the Kansas side of the state line, offers a quiet and secluded environment, which Tuchel believes will help the team to focus.The team's training facilities will be located 20 minutes away at the Swope Soccer Village, home of Sporting Kansas City's academy teams, on the Missouri side. Tuchel noted that the hotel's small size and private setting will allow the players to get to know each other better, which he considers crucial for their success in the tournament.England will fly in and out of Kansas City for their matches, taking advantage of the city's central location in the US to minimize travel distances. The team will also have access to a local swimming pool and a basketball court for training and relaxation.Tuchel emphasized the importance of team chemistry in the World Cup, where the schedule is expected to become increasingly congested after the second group tie against Ghana. He expressed satisfaction with the team's pre-tournament schedule, which includes warm-up matches against New Zealand and Costa Rica in Florida.

The England and Wales Cricket Board (ECB) has reaffirmed its support for head coach Brendon McCullum and managing director of cricket Rob Key, despite the team's dismal 4-1 Ashes defeat in Australia. This decision, while potentially unpopular among fans, is seen as the right course of action by the ECB.According to Richard Gould, the ECB's chief executive, the board's choice to stick with McCullum and Key is guided by 'good judgment and objective views,' rather than public sentiment. Gould emphasized that the leadership duo has shown a willingness to 'adapt' and 'evolve' their approach in the wake of the Ashes debacle.The ECB's internal review of the Ashes series highlighted several key areas for improvement, including better use of the performance system, enhanced long-term planning, and a more professional culture within the senior men's setup. These findings were presented to the media in the form of two slides with bullet points.One of the major talking points from the review was the team's culture and environment, which came under scrutiny following a mid-Ashes break in Noosa that generated headlines about player behavior. The situation escalated when Harry Brook was disciplined for a drunken altercation with a nightclub bouncer in New Zealand.Gould described the incident as 'significantly unprofessional,' while Key noted that Brook was given a second chance due to his previous clean record and the decision to prioritize England commitments over the Indian Premier League.In response to these challenges, the team has introduced a midnight curfew to formalize McCullum's stance on the importance of rest and discipline. Key also highlighted the recent appointment of Troy Cooley to oversee fast-bowling development as a positive step forward.Looking ahead, Key emphasized that the team will not undergo a major philosophical shift under McCullum and captain Ben Stokes, who have different but complementary outlooks. The focus will be on refining their existing approach rather than implementing drastic changes.