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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.

Matt Brittin, Google's former top executive in Europe, has been selected as the next director general of the BBC. Brittin, who stepped down as Google's president in Europe, the Middle East, and Africa last year, will replace Tim Davie at a critical juncture for the corporation. The 57-year-old's appointment was confirmed after a BBC board discussion on Thursday. Brittin, a former Olympic rower and Doctor Who fan, is seen as a substantial figure capable of diving straight into crucial government talks over the renewal of the BBC's royal charter. However, his lack of editorial experience has been noted by insiders, who worry about his ability to deal with the periodic crises that occur at the corporation. The BBC is now expected to create the role of deputy director general to support Brittin, with a new head of BBC News also to be appointed. Brittin expressed his excitement about the role, stating: “Now, more than ever, we need a thriving BBC that works for everyone in a complex, uncertain and fast-changing world.” Samir Shah, the BBC's chair, praised Brittin's experience, saying he had “deep experience of leading a high-profile and highly complex organisation through transformation”. The appointment comes after some early favourites for the role dropped out or declined to apply amid concerns that scrutiny and political attacks aimed at the BBC have made leading it one of the hardest jobs in public life. Brittin's lengthy career at Google will also be significant in his new job, particularly as the BBC lays out plans to save considerable costs using a new tech division and forges a new relationship with YouTube, which is owned by Google. The licence fee model is also under pressure, with more people opting not to pay.

Ukraine's national football team is on the brink of a significant achievement as they prepare to face Sweden in a crucial World Cup 2026 qualifier playoff. The match, set to take place in Valencia, Spain, represents a vital opportunity for Ukraine to end their 20-year absence from the World Cup. Serhiy Rebrov, Ukraine's manager, is determined to lead his team to victory, emphasizing the importance of representing their country amidst ongoing challenges.The Ukrainian team has faced considerable adversity, including the absence of key players due to injuries and the impact of Russia's full-scale invasion in February 2022. Ukraine has had to play numerous matches in various European cities, including Lodz, Prague, Leverkusen, and Warsaw, due to the conflict at home. Despite these challenges, Rebrov's squad has shown resilience, having recently qualified for Euro 2024 and narrowly missing out on a spot in the 2022 World Cup.Rebrov's determination is palpable as he highlights the significance of this match for his players and the nation. 'We have to do something for our people,' he says. 'They deserve this. I'm sure our players will fight on the pitch, show character, show everything just to be there.' The team's motivation is further amplified by the support of their fans, with approximately 20,000 expected to attend the match at the Estadi Ciutat de Valencia.On the other side, Sweden, under the management of Graham Potter, is also eager to secure a spot in the World Cup. Despite their own challenges, including injuries to key players like Alexander Isak and Dejan Kulusevski, Potter remains optimistic about his team's chances. The match promises to be a closely contested encounter, with both teams aware of the significance of a victory.Beyond the sporting aspect, the match also holds emotional value, as both countries have agreed to a long-term cooperation agreement, including the donation of football equipment to Ukrainian schools. This gesture underscores the power of sports to foster unity and support in times of adversity.

Italy and Northern Ireland are set to clash in a pivotal World Cup 2026 qualifier, with both teams eager to reassert their presence on the global football stage. For Italy, it's about regaining their footing after consecutive World Cup failures in 2018 and 2022, while Northern Ireland aims to return to the tournament for the first time in four decades.Gennaro Gattuso, Italy's coach, emphasized the significance of the match, stating, 'This is the most important game of my coaching career so far.' Italy's players, including Mateo Retegui, are equally determined, with Retegui asserting, 'Now is the time to show everyone exactly who we are.'Northern Ireland's manager, Michael O'Neill, faces challenges with a depleted squad, particularly the absence of Conor Bradley and Dan Ballard. Despite these setbacks, O'Neill remains optimistic, highlighting the team's youthful energy and lack of fear.The match, set to take place at Atalanta's Bergamo Stadium, promises to be intense. Gattuso noted Northern Ireland's direct playing style, saying, 'They typically 'toss the ball into the box' and thrive on latching on to second balls.' A win for Italy would likely seal their spot in the World Cup, while a loss could spell the end of O'Neill's tenure as Northern Ireland's manager.As both teams prepare for the crucial encounter, the pressure is palpable. Italy's four-time World Cup wins and football-crazed nation add to the weight of expectation. Will Italy overcome their recent struggles and secure a spot in the 2026 World Cup, or will Northern Ireland pull off a surprise?

Richie Garcia, a former major league umpire, has voiced his concerns about the impact of robot officials on human umpires in Major League Baseball. The Automated Ball-Strike Challenge System, set to debut in 2026, allows teams to challenge strike zone decisions using a system based on 12 Hawk-Eye cameras.Garcia believes that this technology will lead to the humiliation of umpires, stating, "Nobody likes to be humiliated in front of 30,000, 40,000 people." He argues that Major League Baseball is essentially saying it doesn't trust the umpire's strike zone and will instead rely on a system operated by "some computer geek" with a PhD in physics.Despite criticism, umpires have shown increased accuracy in recent years, with an accuracy rate of 92.83% last season, down from an average of 10.88 missed calls per game. The introduction of ABS aims to further reduce errors, with each team getting two challenges per game.Umpires have mixed views on the technology, with some seeing it as a way to correct egregious pitches and others concerned about the mental impact of constant evaluation. Spring training test results showed varying success rates among teams, with Philadelphia and Chicago Cubs performing well in challenge success rates.

Wales coach Craig Bellamy has urged his team to stay calm and focused ahead of their crucial World Cup playoff semi-final against Bosnia and Herzegovina on Thursday. Drawing inspiration from Usain Bolt's approach to high-pressure situations, Bellamy emphasized the need for his players to remain relaxed and composed under pressure.Bellamy, who has been in charge of Wales for nearly two years, believes that his team has the ability to perform at their best when they are calm and focused. He cited their seventh-ranked possession statistics in European countries since he took over, highlighting their ability to control games. The team has also shown resilience, with Ethan Ampadu deputizing for injured captain Ben Davies.The prize for success in the playoff is a spot at successive World Cups, which would not only bring prestige but also a significant financial boost and a positive impact on grassroots football in Wales. Bellamy is aware of the challenges posed by Bosnia and Herzegovina, having researched their background, culture, and squad composition. He noted that 11 of their 35-man squad were born in Bosnia, while the others come from the Netherlands, Germany, and Sweden.Bellamy expressed his confidence in his team's abilities, stating that “there won't be any regrets” regardless of the outcome. He emphasized that his team will give their all and that he is prepared for all possible outcomes. The coach also highlighted the importance of enjoying the experience and not letting pressure get to them, saying, “If you can't enjoy this and you only feel pressure, you ain't made for elite sport.”Wales' last experience in a playoff ended in pain, with Wojciech Szczesny being Poland's hero. However, Bellamy is determined to build a team capable of competing for top spot in qualifying and avoiding the need for playoffs in the future.

Martin Dohrn, a veteran wildlife photographer, has created a joyous film that explores the fascinating world of bees in his urban Bristol garden. The documentary, 'My Garden of a Thousand Bees', features over 60 species of bees and showcases their unique characteristics and behaviors.Dohrn's enthusiasm for bees is palpable as he shares his experiences with the audience. He notes that bees live in a 'completely different dimension' and that his approach to filmmaking is 'time-stretching', resulting in breathtaking detail and a soundtrack that immerses the viewer in the world of bees.The film features a range of bee species, including the wool carder bee, the ashy mining bee, and the red-tailed mason bee. Each species is showcased in its natural habitat, highlighting their unique characteristics and behaviors. Dohrn's interactions with the bees are both fascinating and heartwarming, particularly his bond with a leafcutter bee named Nicky.The film's themes of companionship and appreciation for nature are woven throughout the narrative, making it a delightful and educational watch. Dohrn's passion for bees is infectious, and the film encourages viewers to appreciate the importance of these vital pollinators.The documentary also touches on the decline of bee populations worldwide, with Dohrn noting that 'all over the world, bees are declining'. However, the film's focus is on the beauty and wonder of bees, rather than the doom and gloom of their decline.The film's message is clear: let's appreciate and protect these incredible creatures. As Dohrn says, 'It's changed my view of bees. It's changed my view of the world.''My Garden of a Thousand Bees' is available to watch on BBC Four and iPlayer.

Republic of Ireland captain Seamus Coleman has urged his team to complete the job of qualifying for the World Cup, saying they have a duty to lift the country. The Republic visit the Czech Republic on Thursday in a World Cup playoff semi-final.Coleman believes that recent history, including painful playoff defeats in the past, will be forgotten in Prague. He emphasized that the current team, led by manager Heimir Hallgrímsson, has the confidence and momentum to end a 24-year absence from the World Cup.The team has been allocated only 1024 tickets for the semi-final, but Coleman insists the Republic will not be intimidated in Prague. He added that the team's recent wins over Portugal and Hungary have lifted the country and given people something to talk about.Coleman's confidence was shared by Hallgrímsson, who recently extended his contract with the Football Association of Ireland until the end of the Euro 2028 campaign. The Czech Republic pose a conundrum ahead of the semi-final, with Miroslav Koubek taking charge of the national team.

Photographer Peter van Agtmael captured a striking image during his first trip to Iraq 20 years ago, which has become a defining moment in his career. The photograph shows a dejected soldier sitting in a domestic living room, highlighting the incongruity of war in everyday life.Van Agtmael, who was 25 at the time, had been embedded with the US military for six weeks. He wanted to move beyond traditional war photography, which often focuses on violence and horror, and explore the human side of conflict. This image, he says, crystallized his understanding of the US military's role in the Middle East and the absurdity of war.The photograph shows a soldier in a mundane setting, which could be anywhere in the world. Van Agtmael notes that this juxtaposition of war and domesticity reveals the complexity of human nature and the proximity of war to everyday life. He believes that war is part of the human soul and that it's essential to acknowledge this reality.Van Agtmael's experience in Iraq was formative, and he reflects on the failures of the war in Iraq and Afghanistan. He questions the effectiveness of externally created regime change and the long-term impact of military interventions.As a war photographer, van Agtmael has grappled with the moral complexities of his work. He believes that thoughtful documentation of human violence can have a moral impact, but also acknowledges the challenges of being a witness to extreme violence.Now a father, van Agtmael has shifted his focus away from war photography. He reflects on the changing nature of his work and the importance of finding new purpose in life.