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They promised us that 20 minutes of sparking was equivalent to 4 hours in the gym. Science says it’s more complicated

April 11, 2026 by usatoday24

Since humans became aware of the existence of electric current, they have tried to apply that power to their own body. As detailed in a report by The Wall Street Journalthis fascination goes back a long way: from the ancient Roman belief in the healing impact of torpedo fish, to the famous vibrating belt machines that promised to sculpt silhouettes in the 1950s. Today, the industry fitness has taken it a step further with whole body muscle electrostimulation (WB-EMS). The concept itself seems straight out of a science fiction movie: users don a wet suit covered in electrodes that delivers simultaneous shocks to major muscle groups for about 20 minutes. The marketing hook is irresistible, as these strength and bodyweight training sessions are sold as the ultimate shortcut to replacing hours of sweat in the gym. On social networks, dozens of influencers They upload videos doing squats and arm lifts while wearing this bionic suit. But, beyond the aesthetics and the promise of a toned body with little effort, what is true in all this? From the clinic to global fashion The technology behind electrostimulation is not a recent invention nor was it born in a trendy gym. Initially, it was used in hospitals and rehabilitation settings for a strictly medical purpose: to relieve pain, prevent muscle atrophy in bedridden patients, and improve circulation. However, in recent years, it has experienced explosive growth as a business model. fitness. The data is there. On the ClassPass platform, the number of centers offering EMS training worldwide increased more than 16% between 2023 and 2025. International franchises such as the French Iron Bodyfit plan to open more than 50 studios in the United States in the next three years, while the Californian company Body20 has gone from 46 to 67 locations nationwide since 2023. All this despite the fact that it is not an economic activity: classes cost between $40 and $100 per session. To understand the phenomenon, you have to understand how the experience works. The wet suit—water is necessary to conduct electricity effectively—sends electrical impulses directly to the muscle. This forces a greater percentage of muscle fibers to contract simultaneously involuntarily. As described by journalist Ellen Gamerman in The Wall Street Journalthe physical sensation is similar to that of receiving a call on a mobile phone in vibrate mode, with the difference that, in this case, “you are the phone.” Combined with core exercises, the level of muscle contraction makes the effort feel as intense as a high-intensity interval (HIIT) class. If you extend one arm without bending it slightly, the current can cause it to lock up completely until the trainer lowers the intensity of the machine. But who is attracted to this technology? Helge Guetzlaff, business development director of the German brand Miha Bodytec, joked in the American newspaper claiming that it attracts “a lot of lazy people.” However, Sabine Padar, owner of the exclusive Body Alchemist NYC studio, points out that she often has to convince her clients that spending more hours in the gym is not the only way to gain muscle. She insists that EMS sessions aren’t necessarily easier than traditional training, they’re just faster. The user profile is varied: from women concerned about losing strength during menopause to fashion professionals, such as Max Auth, a director of the Wolford brand who confesses to spending about $300 a month on these sessions to maintain his figure with a minimal investment of time. The reality bath Faced with marketing claims that “20 minutes are equivalent to 4 hours in the gym”, the scientific community has decided to take action on the matter. Cedric X. Bryant, executive director of the American Council on Exercise, points in WSJ that these claims are hyperbolic and that what one should expect from these workouts is being greatly exaggerated, while acknowledging that they may offer mild to moderate improvements. To shed light on the matter, various studies have analyzed the real impact of WB-EMS on different population groups: In older and sedentary adults: A research published in Clinical Interventions in Aging demonstrated the effectiveness of this technology in sedentary and thin older women, at risk of sarcopenia (loss of muscle mass) and abdominal obesity. After subjecting a group of 23 women to 18 minutes of WB-EMS (three sessions every 14 days) for 12 months, the results showed significant and positive differences in appendicular muscle mass and a reduction in abdominal fat mass compared to the control group. The study concluded that, given the good acceptance of the technology, WB-EMS is a valid and less daunting alternative for subjects who do not want or cannot do conventional exercise. In recreational athletes: Another essay published in Frontiers in Physiology analyzed the effects of WB-EMS in male recreational runners. For 6 weeks, participants reduced their running training to a single day per week and added a weekly WB-EMS session. The results indicated that the electrostimulation group improved their maximum oxygen consumption (VO2max), their ventilatory thresholds, their running economy and their vertical jump. This suggests that WB-EMS may be an effective stimulus to maintain and even improve performance in periods where resistance training volume is reduced. The definitive comparison (The WB-EMS is not a miracle): To check whether electrostimulation is really superior to classic sweating, the FIT-AGEING project evaluated 89 sedentary middle-aged adults. A rigorous study also published in Frontiers in Physiology divided the subjects into three 12-week programs: traditional concurrent training (recommended by WHO), high intensity interval training (HIIT), and HIIT added to WB-EMS. Finally, all types of exercise induced similar increases in cardiorespiratory fitness and muscle strength. In fact, the scientists explicitly concluded that the changes observed in the WB-EMS group were not superior to those of the other conventional exercise programs. The suit does not provide any extra decisive advantage compared to sweating the shirt in a traditional way. The silent danger of overexertion Despite the obvious benefits, WB-EMS is not a toy and carries risks if not properly supervised. As he … Read more

a real fight with Bruce Lee where there were no limits

April 11, 2026 by usatoday24

In the 60s, in the United States they were already operating dozens of schools of martial arts open to the public, something unthinkable just two decades before outside of Asia. In that same period, some real combats between practitioners of different styles were resolved in private spaces and without official regulation, far from any sporting format. In fact, it would not be until the 90s when competitions like the Ultimate Fighting Championship They would begin to systematize these types of confrontations between different disciplines. A local rivalry turned into legend. In California in 1964, long before Bruce Lee became a global icon, he had already earned an uncomfortable reputation within the Chinese martial arts community. He was young, brilliant, provocative and increasingly convinced that many traditional styles were full of beautiful forms and great plasticity, but of little use when it came to a real fight. Plus: his speech, his public demonstrations and his decision to teach anyone, regardless of race or origin, placed him at the center of a tension that went far beyond personal ego. In that climate of tension with the character, a guy named Wong Jack Mananother young master, but with a diametrically opposite profile, quieter, more classic and more linked to a disciplined and traditional idea of kung fu. The clash between the two would soon take the inevitable form of a reckoning. A real fight with the myth. The decisive thing about that upcoming fight was not only who was going to hit first or exactly how long it lasted, but the simple fact that anyone would even accept face Lee in the most uncomfortable conditions possible: a private, tense confrontation with practically no rules, where both understood that it was not a simple exhibition, but of knock down the rival no matter what. As in every battle of the past of which we only have the words, they say that Wong wanted to introduce certain elementary limitsbut the most repeated version maintains that Bruce imposed his idea of total fighting, a real test, without concessions, without a safety net and without the protection of spectacle. There was the true magnitude of the episode: it was not a tournament, nor a choreography, nor a public demonstration to impress students or onlookers, but a physical clash. between two conceptions of combat, two temperaments and two ways of understanding martial arts. That someone decided to stand up to Bruce Lee in that context explains why the episode has survived decades as one of the most fascinating (and most difficult) stories of the Lee myth to fix. Wong Jack Man Two opposite styles. The popular image invites us to imagine an almost cinematic scene, two masters launching perfect techniques in a solemn duel, but the stories agree on something much more earthly: That was a messy, abrupt, exhausting combat and very far from the romantic ideal of kung fu. Most accounts agree with a beginning where Bruce dated overwhelming aggressionseeking to close the distance, chain straight blows and give no respite. Wong, however, chose to movedodge, defend and try to contain the gale without fully deploying his most dangerous arsenal, especially his long-range kicks. It was not, in any case, a “nice” fight, but an awkward collision between the iconic speed of Lee and Wong’s evasive resistance. That is precisely why the confrontation has mattered so much: because it stripped martial arts of much of its theatricality and revealed something more raw and revealing. Bruce Lee in a still from Enter The Dragon The great dispute impossible to close. What exactly happened inside that room remains one of the controversies most persistent in the history of Bruce Lee and martial arts. The version of his wifeLinda Lee, maintains that Bruce ran over Wong within minutes, chased him when he started to back away, and ended up forcing him to surrender on the ground. Wong Jack Man defended just the opposite: that Bruce attacked like a wild bull, that the fight lasted more than twenty minutes and that there was no clear victory, but rather exhaustion and a confusing ending. A third testimony, that of the teacher William Chenmoves in an intermediate zone and talks about a long, even and no clean ending. This disparity has fueled the myth for decades, but it also reveals a fundamental truth: The actual fights rarely resemble the later heroic tales, let alone Lee’s own films. Each side remembers what happened according to its pride, its memory and the need to protect a reputation that was already at stake. Frame from Game of Death More than a fight. If you like, that fight not only pitted two men against each other, but to two paradigms. Bruce Lee had long denounced what he considered a “classic disorder” of rigid postures, showy movements and techniques that were impractical for the street. Faced with that defended an almost revolutionary idea for the time: that what was important was not the purity of style, but real effectiveness. Wong represented, at least symbolically, the other pole: the elegance of tradition, the authority of lineage, the discipline of established systems. That is why that night in Oakland has ended up being read as a kind of dress rehearsal for what would become decades later. the central debate of mixed martial arts. More than a fight about personal honor, it was a brutal test of which parts of kung fu survived when ritual and rhetoric were eliminated. Lee’s pride. Possibly also, this was the most important consequence of all. Even accepting the version more favorable to Bruce Leethe fight did not develop as he expected. It does not seem that he obtained a clean, quick and overwhelming victory, but a rather dirty fight which left him exhausted, frustrated and feeling like his system still had serious limitations. According to your own wordschasing his rival and hitting him without finishing him as he wanted made him understand that the modality of Wing Chun It wasn’t enough for him. That … Read more

We have been sending pregnant women to bed for decades as a precaution. Science has just proven that it is a big mistake

April 11, 2026 by usatoday24

In the face of a potentially risky pregnancy, the prescription that was administered was very clear: absolute bed rest to avoid any fall or inappropriate movement that could cause an abortion. But this is something that today is no longer the norm, since staying still during pregnancy not only does not prevent the premature birth of a baby, but it can be very harmful. You have to move. Here, institutions as important as the Mayo Clinic are quite blunt in their guidelines by noting that there is no evidence that bed rest is effective in treating preterm labor. To reach this conclusion, they logically resort to different clinical studies inside the Cochrane Library In this case, they point out, for example, that in singleton pregnancies, routine bed rest does not prevent premature births and, in fact, the adverse effects of being immobilized outweigh the supposed benefits. In the situation of being in a multiple pregnancy, hospitalization and strict rest do not reduce perinatal risks and, ironically, an increased risk of spontaneous birth has been observed. What dangers does it have? Lying in bed may be something that a priori is seen as completely harmless, but the reality is that science advises against it for different reasons. The first of them is that immobility increases the risk of venous thromboembolism if one is not properly anticoagulated. In addition, it causes bone demineralization, where an estimated loss of bone mass is 2% to 3% per month, muscle atrophy and weakness, orthostatic hypotension, and is also associated with low neonatal birth weight and a higher rate of cesarean sections. Beyond the physical. Having complete rest isolates the pregnant woman in a bed watching television all day, and this only causes increased emotional stress, anxiety, and can lead to depression. In studies, this is something that currently affects 20% of pregnant women subjected to this isolation in countries like the United States. What is recommended. The objective of the different international guidelines to treat these pregnant women has taken a great turn in recent years. The SEGO guide of Spain, for example, recommends these women with aerobic activity for 3-5 days a week, avoiding routine rest. If we cross the ocean, in the United States it is recommended 150 minutes of moderate exercise a week, also to reduce the rate of cesarean sections and gestational diabetes. There are exceptions. Generalizations are never good, and that is why you cannot ask all pregnant women for absolute rest, but neither for a lot of activity. Here the most current guidelines establish that there are very specific and documented cases, such as premature rupture of membranes, where this rest is necessary. But these cases are very few. What we must stay with here is that immobility during pregnancy is not the best, and we must stay active as much as possible with activities logically adapted to the pregnancy situation. Images | Anna Hecker In Xataka | There are couples who couldn’t have children. Now AI has managed to give them hope

In China, 470 series made with AI are produced per day. 99.9% of them do not reach anyone

April 11, 2026 by usatoday24

In January 2026, the platforms streaming Chinese companies recorded the launch of more than 14,600 short series generated with artificial intelligence. There are 470 new titles a day, all ready to be distributed through applications like Douyin or Hongguo. The fact that is not widely disseminated is where almost all of that content went. Long live the microdramatic. The microdramas (either duanju) They are mobile series with episodes of between two and five minutes, usually adaptations of novels previously published in web format, and which are disseminated on pages financed not with subscriptions, but through micropayments and algorithmic advertising. The narrative of these series is extremely formulaic, despite the fact that on paper it seems very varied: the rich also cry, time travel, sentimental revenge, melodramas concentrated in a few minutes, all designed (circular and repetitive plots, characters that enunciate what is happening) to consume between subway stops. The irresistible growth of duanju. The format had been flourishing for years before AI will arrive. The Chinese microdrama market lost revenue from 500 million dollars in 2021 to 7,000 million in 2024surpassing the national film box office that year for the first time. In 2025, the sector was already close to 9.4 billion. It is estimated that more than 830 million users consumed the format, and about 60% of them pay or make transactions on platforms that offer a few free episodes to hook viewers. As in so many other industrial aspects, China has built, without attracting the attention of the rest of the world, the largest serialized entertainment market in terms of volume on the planet. AI Invasion. A live-action microdrama cost more than one million yuan to produce in 2024. With AI tools like Kling or Seedancethe same project It costs between 50,000 and 100,000 yuan (between 6,000 and 12,000 euros). In the cheapest production studios, the figure drops to 30,000 or 40,000 yuan per complete series. The cost per minute of content fell from between 3,000 and 5,000 yuan at the beginning of 2024 to between 200 and 1,000 today. Everything changes. This fall has transformed the structure of the microdrama industry, and has boosted companies specialized in the AI variant of the genre such as Jiangyou Culture, which with the support of China Literature (the publishing group affiliated with Tencent), grew to a thousand employees and has a turnover of around 1 billion yuan annually with net margins of between 20% and 30%. Judian, another production company, generates around a hundred microdramas photorealistic films per month and between one thousand and two thousand audiodramas with synthesized voice. 99.88%. Of the 127,800 AI series in circulation in February 2026, the proportion that crossed the 100 million views threshold was 0.117%. In 2025, the specialized app Douyin launched 60,000 series generated with AI, and only ninety-six reached that same number. That 0.16% success rate has been dropping as production volume has risen. But there are also differences with live-action microdramas: the most watched AI series accumulated about one billion views, and the most successful live-action series, 4.4 billion. Viewers detect the synthetic quality and the uncanny valley the emotional commitment is burdened, which leads, according to experts, to a significant abyss: the viewer does not want to pay for it. Advertising spending. The dominant business model in this million-dollar sector is known as “traffic arbitrage”: produce cheaply with AI, invest aggressively in advertising within the platforms to generate visits and pray to survive on the margin. In March 2026, daily advertising spending on AI microdramas on Douyin exceeded 70 million yuan, surpassing that of live-action productions for the first time. That is to say: the loop can be financially sustained even if the audiences do not attend. The actors suffer. Actor Li Wenhao entered the microdrama industry in 2023 and worked 50 consecutive days. In March 2026, only six worked, according to Hello China Tech. Castings are increasingly rare, microdrama production companies they hire fewer and fewer humans: For example, Chengdu Zhongdu, a medium-sized studio, announced in March that it was abandoning production live-actionconverting its entire workforce to AI. Actress Hao Lei, one of the most respected figures in Chinese dramatic cinema, has said that AI will replace 90% of actors, adding that in certain records it already surpasses the human equivalent. Stolen faces. The displacement of professional actors was foreseeable, but the massive and unauthorized appropriation of real faces was not so predictable. In early 2026, a 72-episode AI-generated historical drama appeared in Hongguo and gained widespread popularity before a blogger specialized in traditional Chinese clothing discovered that one of the characters had her face. The same thing was detected by another content creator, and neither of them was compensated or informed, Hello China Tech also says. And of course, professional actors have also been victims of this type of practice: Yi Yangqianxi (Jackson Yee), Xiao Zhan and Dilraba Dilmurat are some of them. But the cases of semi-anonymous people, like these content creators, are much more bloody: they discovered the theft of their face almost by chance, so anyone who has uploaded enough content to the internet to train an AI may find themselves in a similar situation. Header | pandaily

China has just launched its first undersea data center with total energy autonomy. The idea makes more sense than it seems

April 11, 2026 by usatoday24

In the AI race, having a robust data center infrastructure to power it is essential, but first you need energy to power it all. The United States may lead the chip industry (at least, the strategic ones), but China follows closely at an unstoppable pace and furthermore, has the energy. And he is already beginning to connect the dots, showing off his technical power and ingenuity: already It has the largest data center in the worldis also a pioneer to submerge them under the sea. Now it has taken a twist with the first underwater data center that ‘drinks’ directly from the wind that just opened. This project represents the perfect union of two of China’s strategic priorities: digital sovereignty and carbon neutrality. By placing computing infrastructure on the seabed and powering it directly with clean energy on siteChina is solving one of the great current technological problems: the insatiable energy consumption of AI and Big Data. The project. About 10 kilometers off the coast of Shanghai, at the bottom of the East China Sea, a steel cylinder receives electricity directly from wind turbines and is cooled with sea water. It is the Lingang Subsea Data Centeran ambitious project promoted by Shanghai Hailan Cloud Technology (HiCloud) and built by CCCC Third Harbor Engineering. It consists of a series of data storage and processing modules encapsulated in watertight and submerged containers, which are connected via two 35 kV submarine cables to offshore wind turbines operating off the coast of Shanghai. With a planned capacity of 24 MW in two phases, the first is already operational: it has a capacity of 2.3 megawatts and includes a ground control center, a vertical data module installed under the sea and two main 35 kilovolt submarine cables. Why it is important. In addition to the fact that it does not occupy land, in cities as crowded as Shanghai it represents a valuable saving in land and that it can be installed close to where it is needed (if there is a coast, obviously), because it solves at the same time three structural problems of the sector: Refrigeration. Seawater acts as a constant and free heat sink, eliminating the need for industrial air conditioning systems that consume 40 to 50% of electricity. The metric that measures the energy efficiency of a data center by comparing the total energy consumed versus that used purely by the servers is the PUE, which for a standard data center on land is an average slightly higher than 1.5. The project promises to lower it to a figure not greater than 1.15. Without consumption of fresh water. Traditional data centers evaporate millions of liters of water to cool their servers, but this uses thermal exchange with the ocean, so it does not consume water resources. Take advantage of the surplus from wind power. One of the handicaps of wind energy is that generation depends on the wind and not on demand, so if you do not have a battery, the energy that is not consumed is wasted. Thanks to this direct connection, the data center absorbs wind production in real time, functioning as a constant consumer that reduces the waste of renewable energy due to lack of destination, In figures. The magnitude of the project, with some official numbers: The budget is 1.6 billion yuan, about 200 million euros. Total planned operational capacity of 24 MW (2.3 MW in the first phase). The design PUE is less than 1.15. More than 95 percent of electricity comes from renewable sources. Context. The name of HiCloud is not new because in fact it is an old acquaintance: it is the person behind the underwater prototype in front of Hainan which began to install in 2021. However, the international reference is the Natick project from Microsoft (2013–2024), which demonstrated the potential of underwater centers: only 8 of the 864 servers failed, a much lower mortality rate than that of any conventional data center in the same period and also got a very low PUE of only 1.07. Despite this, Microsoft shelved the matter: viability in terms of costs and maintenance is another story. However, the Lingang project has top-level institutional support: is present on the List of Green and Low Carbon Technology Demonstration Projects of the NDRC, China’s top economic planning body. How they have done it. Servers are placed in pressurized steel cabins filled with inert gases to prevent corrosion and fire with a design that maximizes interior space and minimizes the impact of waves. Heat is dissipated by pumping seawater through radiators located behind the racks. The most complicated operation was raising the cabin in the open sea: the separation between the legs of the support structure and the steel piles on the seabed was only 0.18 meters and the maximum allowable deviation was 10 centimeters, so GPS and the Sanhang Fengfan crane vessel were helped. Roadmap. The project follows a staggered progression that leaves certain unknowns. First was the prototype in Hainan (2021-2024). In 2025 the project began in Shanghai, whose phase 1 concluded in October of that year and it has just been launched a few weeks ago. The key phase that will take capacity up to 24 MW has no official public date. Of course, the consortium of companies made up of HiCloud, Shenergy Group, China Telecom Shanghai, INESA and CCCC Third Harbor Engineering signed a cooperation agreement in October 2025 to scale to 500 MW linked to offshore wind, although where and when is unknown. Yes, but. That 2.3 MW of phase 1 is practically a demonstration, not commercial infrastructure as a large conventional data center operates between 50 and 500 MW. And in addition, it has to resolve the issues that Microsoft’s Project Natick left unresolved, such as underwater maintenance: HiCloud has not published protocols or long-term repair costs. And scalability to 500 MW is at the moment more of an intention than a project In Xataka | Where you see a mountain, China sees a … Read more

Germany has found a source of perovskite for solar panels in an unusual place: bullets from the 17th century

April 11, 2026 by usatoday24

Solar energy is, with the permission of wind energy, the renewable energy that has stood out the most and best in the energy transition on a global scale. There are already solar parks everywhere: from fields that They fill the emptied Spain to deserts passing through the tibetan plateau and also in high seas either in lakes. And although the most common technology is crystalline silicon, perovskite is the great promise. There is a compelling reason to bet on perovskite: a record efficiency certified in a laboratory. up to 26%. However, a large-scale deployment of perovskite solar cells requires a large-scale, sustainable supply of high-purity lead iodide. We have come across lead: a toxic element whose mining is not exactly sustainable. On the not-so-good side, recycling it to the required purity levels is a technical challenge that a German research team at the Helmholtz Institute in Erlangen-Nuremberg has just solved. And in what way: have achieved converting 17th century musket balls into high-performance solar cells. The idea. It consists of a process of upcycling (upcycling) in two stages: first a non-aqueous electrochemical route and then purification through the crystallization of single crystals, quite different from traditional methods based on strong acids and large volumes of water. To demonstrate the robustness of their method, the team used lead bullets from the 16th and 17th centuries as raw material, a truly complicated material in that it contains carbon residues, metallic inclusions and oxidation patina. If the process can clean up this type of historical residue, it can handle virtually anything you throw at it (obviously any lead residue). Recycling bullets into solar cells transforms lead waste into a clean energy source. Why is it important. Perovskite solar cells require extraordinarily pure lead iodide, and achieving that level of purity from contaminated waste was until now a challenge without a practical solution that this research has solved: the team manufactured solar cells with their recycled material and obtained 21% efficiency, practically identical to the 22% of devices manufactured from industrial synthesis. Beyond the technical result, the process solves two problems at the same time: it offers a way to supply the enormous demand for lead iodide that will be generated by the take-off of perovskite solar cells without resorting to new mining and at the same time eliminates a toxic pollutant whose current management is expensive and environmentally problematic. Context. As we mentioned above, lead is an abundant waste: it comes from used car batteries, electronic scrap, construction materials or ammunition, among others. Lead recycling is dominated by car batteries, which have very high recovery rates in developed countries. The problem is in the rest: In 2018, only 48% of the world’s residual lead at the end of its useful life was recovered and in more dispersed flows such as electronics or construction, the recovery is even lower. Conventional recycling returns metallurgical-grade lead, useful for batteries and alloys, but far from what the solar industry requires. In addition, they are slow processes that generate toxic gases such as nitrogen oxides and large quantities of contaminated wastewater, up to 70 liters per kilogram of lead iodide produced. Traditional high-temperature purification methods are expensive and complex. More robust, adaptable and cleaner extraction and purification methods are needed for perovskite technology to truly scale. How they do it. The bullets are cleaned with dilute nitric acid, melted and molded into rods that act as electrodes in an electrochemical cell with acetonitrile and dissolved iodine. When current is applied, lead reacts directly with iodine and precipitates as lead iodide with 94% efficiency. Doing it this way, in a non-aqueous medium, is a deliberate decision to avoid introducing impurities that would accelerate the degradation of the perovskite. The resulting lead iodide still contains metallic impurities, so it is not suitable for solar cells. That is why it is subjected to a second purification stage through crystallization at a controlled temperature for about 70 hours. The process is exceptionally selective: as the crystal grows, it expels contaminating metals such as silver or copper, raising the purity of the material to levels comparable to or even higher than the highest quality commercial standard. Yes, but. The process works and the results are solid, but scale matters: at the laboratory level, productivity is just 0.05 grams per hour and each purification cycle lasts about 70 hours. The leap to an industrial scale requires solving the recovery of organic solvents, controlling the passivation of the electrodes and substantially improving the productivity of the process. The research team does not hide it: the chemistry is proven, but the distance from the laboratory to a real production plant is long and will determine whether we end up seeing perovskite panels made with recycled lead or if this remains like a shiny piece of paper in a drawer. In Xataka | Germany has had a crazy idea to solve one of the problems of renewables: covering a lake with solar panels In Xataka | 800 meters deep in a 175 million year old rock: Germany’s solution to nuclear waste Cover | By Branch and Soren H

more than 2 km and you can walk like 2,000 years ago

April 11, 2026 by usatoday24

For centuries the Romans dedicated themselves to expanding throughout Europe and North Africa, taking over the Mediterranean and weaving a wide network which spanned from the Nile Valley to Britannia. A vast world in which his mark is still present today, more than a millennium and a half later. However, few places can boast of preserving a vestige like the one that has stood in Galicia since the 3rd century AD. There, in Lugo, it remains a wall apparently immune to the passage of time that continues with an appearance not very different from what the legionnaires saw in their day. That makes it a unique treasure. A magnetism that does not go out. In a world in which immediacy rules and in which chronicles are out of date within a few hours of being published (the war in Iran leaves a good example), the Lugo wall is a rare bird. It was built nearly 2,000 years ago, between 3rd and 4th centuries of our era, and has been endorsed by UNESCO as a World Heritage Site for more than a quarter of a century. However, despite its long history and enormous popularity, the fortification continues to make headlines in 2026. A quick search comes to check it. News, reports, guides…all about a monument almost twenty centuries old and all signed in recent months. The interest in the Lugo wall does not fade. Just as other large constructions inherited from the Romans or the pre-columbian civilizations. What is the reason? That the Roman wall of Lugo is unique. And we don’t mean it in a kind, complimentary way or with the purpose of extolling its virtues. No. Its authenticity is objective and is recognized by UNESCO itself, which in 2000 included it on its World Heritage list and its benefits still stand out today. The UN technicians emphasize its “exceptional universal value” and remember why it is such an unusual piece: “It constitutes the most complete and best preserved example of Roman military architecture in the Western Empire (…). It represents the best example of late Roman military fortifications.” “Despite the rehabilitation works carried out, the walls retain their original layout and construction elements typical of their defensive function, with walls, battlements, towers, fortifications, doors and stairs, both modern and original,” comments UNESCOwhich remembers that it also maintains the original layout. “Very few complexes can offer the same historical authenticity and archaeological integrity, both in size, integration and continued use.” Is that so strange? In case there were any doubts, the United Nations office insist: “The authenticity of the walls of Lugo lies in the fact that they have survived 18 centuries intact. During that long period, numerous interventions have been carried out on specific parts for practical and aesthetic purposes, which means that they are not preserved exactly in their original form; therefore, from a restrictive interpretation, they could be considered to lack a certain authenticity. However, as a whole, their authenticity is impeccable.” The unique character of the construction is also claimed by Spanish institutions, starting with Turespaña, which presents it as “the only Roman wall on the three continents that experienced Roman domination that has remained entirely intact.” The same idea is emphasized from the Xunta de Galicia and the Lugo Provincial Councilwhich insists that, despite the changes it has experienced to adapt to the times and the city, “it continues to preserve its perimeter intact, a circumstance that makes it unique in the world.” A lurking colossus. If the above were not enough to highlight its historical value, the fortification draws attention in itself. Perhaps it only represents a tiny part of what the Great Wall of China (with which by the way is twinned for almost two decades), but even so the Galician defense is large enough to stand out in the urban area of Lugo. In total it measures 2,117 meterswith an average thickness of 4.2 m and an unequal height that ranges between eight and 12 m. In some sections it reaches seven wide. Its plan is rectangular and, according to Tourespañacovers 34.4 hectares. As for the structure, it is built with earth-based mortar, loose stone and pebbles. Gates and towers. The above is just part of your business card. In addition to the wall itself, the complex includes a dozen gates and a good part of the original towers. Both elements are interesting. Regarding the doors, the Provincial Council technicians remember half of which are considered original from Roman times. The other five opened from the 19th century to adapt to the urban development and accessibility needs of Lugo. There are those who believe that this adaptation was key for its preservation. With respect to the towers, the autonomous administration points out that the wall preserves 71, most of the 85 original structures. Other sources speak of only 63 “cubes” preserved, among which include one of the most emblematic towers, A Mosquera, which still preserves two original windows. The fortification also has quadrangular structures. They complete the set the stairs, the ramps and the archaeological remains. Although the conservation of the wall has received various endorsements important, not everything is perfect: in February a storm caused a section of several meters will collapse. According to The Voice of Galicia It is the first collapse in two decades. A gem with legend. A construction like the wall of Lugo is not only defined by its history, it also accumulates centuries and centuries of tradition and legends. One of them, perhaps the most famousmaintains that the Romans did not build the fortification to protect a city but rather a forest, the ‘Sacred Forest of Augustus’, ‘Lucus Augusti’, from which the current name of the city originates. What we do know is that it took shape mainly between the 3rd and 4th centuries AD and today it stands out for two things. The first, for being “an exceptional legacy” of Roman architecture and engineering, a merit recognized by UNESCO itself. The second, because it … Read more

Forgetting dreams when waking up seemed like an unimportant anecdote. A Spanish macro-study has linked it to Alzheimer’s

April 11, 2026 by usatoday24

Today, one of the great challenges that modern neurology has with the Alzheimer’s It is not just treating it, but detecting it before it shows its face, since right now there are several therapeutic options that manage to stop the progression of the disease. That is why our effort is to find biomarkers that warn patients that something is happening, and the last one is related to dreams. Spanish research. Based on the Vallecas project and promoted by the Reina Sofía Foundation or the CEIN Foundationand who has pointed out how not remembering dreams can be a risk marker for Alzheimer’s very premature. But to reach this conclusion, researchers have had to analyze a cohort of 1,049 people cognitively healthy older adults, who have been closely followed for a period of up to 10 years. In the end we are talking about a large amount of information that has intersected with the genetics and lifestyle of all patients, and even with the moment in which the first molecular markers of Alzheimer’s began to appear. The dreams. At first glance it might seem like an anecdotal correlation that what happens with our dreams has some relationship with Alzheimer’s, but the reality is that it has a very solid neurobiological basis. And to understand it we have to go to what is known as the default neural network, which is a set of brain regions that are activated when our mind is at rest, wandering or precisely dreaming. Scientific evidence accumulated in recent years has shown that the default neural network is highly vulnerable to Alzheimer’s pathology and is, in fact, one of the first areas to suffer structural and functional damage. In this way, if this network begins to fail in the earliest phases of the disease, it is logical to think that functions associated with it, such as the consolidation and memory of dreams, will be diminished. They have gone further. One of the most interesting points of this Spanish study is that it was not based solely on patient surveys, which may have reduced reliability. Here the researchers looked for important biomarkers, such as the presence of the APOE ε4 allele, which is a genetic variant that predisposes one to suffer from the sporadic form of the disease. In addition, they also analyzed the tau-217 protein, which today is one of the blood markers that indicates a possible Alzheimer’s disease in the early stages of the disease. And only with a blood sample. That is why these results now gain greater strength when it comes to relating the problem to dreams and Alzheimer’s. A paradigm shift. Don’t be scared if you woke up this morning without remembering what you dreamed, since this is completely normal and depends on many factors such as stress, the sleep phase in which we wake up or even age. Here the researchers only point to a sustained pattern of loss of dream memory in older people who, so far, do not have any obvious cognitive problems. That is why this discovery is purely clinical and preventive, since scanning the entire population is unfeasible due to cost and risks. However, asking a patient in consultation about their sleeping habits and their ability to remember what they dream about is free and non-invasive. But logically this has to be accompanied by an effective screening system to be able to diagnose the disease even before the first serious symptoms appear. Images | Slaapwijsheid.nl Robina Weermeijer In Xataka | Dementia is devastating largely because it arrives without warning: some researchers already predict it seven years in the future

If fog was deadly in Ukraine’s winter, spring is offering Russia a key advantage: greenery

April 11, 2026 by usatoday24

In modern conflicts, small changes in the environment can completely alter the balance of combat, even in the face of advanced technologies such as combat drones or sensors. Throughout history, factors such as climate, the ground or the vegetation have conditioned entire offensivesdeciding when and how to attack. In many cases, the difference between advancing or being exposed didn’t depend on a weapon, but on what was happening in the landscape. The same is happening in Ukraine. The cold as an invisible brake. It we count in several occasions. Last winter, the war in Ukraine was marked for a factor as silent as it is decisive: the visibility and conditions meteorological conditions that favored some over others, where the absence of vegetation and phenomena such as the fog and the cold They turned the battlefield into an exposed and lethal space for any offensive movement. In that environment, the drones dominated the air with ease, detecting practically any movement and converting each advance into an immediate risk. Russia, despite its superiority in resources, saw its momentum partially slowed while Ukraine took advantage of this scenario to stabilize the front and launch limited but effective counterattacks. Spring changes the script. With the arrival of spring, that balance begins to break because the terrain is no longer the same nor is the visibility. The vegetation, especially the lines of trees that run through the agricultural fields, introduces a concealment element which profoundly alters the dynamics of combat. So, I remembered this morning the new york times that what was previously an open space dominated by sensors and drones is transformed into a fragmented environment where movement is once again possible, even if in a limited and slower way. Trees as a tactical weapon. Tree lines, inherited from the soviet era to protect crops, they have become natural corridors for the advance, withdrawal and reorganization of troops, offering cover from constant aerial surveillance. In a conflict where large mechanized movements have lost effectiveness, the war is now being fought on foot and in small groupsand this vegetation cover reduces exposure and increases the chances of survival. Vegetation does not eliminate drone threatbut it does hinder their detection ability, enough to change the probabilities on the ground. The Russian advantage. They remembered in the Times that, although both sides benefit from this new coverage, Ukraine recognizes that the effect can favor Russia more due to its greater number of troops, which allows it to better take advantage of any concealment opportunity and advance with fewer relative losses. In areas such as around the Dnieper River, where vegetation has grown especially dense, Russian troops can concentrate and maneuver with a level of discretion that did not exist in winter. This change does not guarantee decisive advances, but it does increase the options for achieve tactical progress. War and the seasons. If you like, the evolution of the conflict confirms to what extent seasonal factors They continue to be decisive even in a dominated war by advanced technologywhere each season alters the rules of combat. If winter favored the defense by exposing the attacker, spring introduces a room for maneuver that Russia tries to exploit to regain initiative. Even so, the constant presence of drones maintains large areas of the front as spaces of high lethality, which limits the scope of any offensive and suggests that, despite the change in scenario, the war will continue to be slow, costly and still far from being resolved in the short term. Image | 7th Army Training Command In Xataka | If the question is where Russia’s missiles come from in the Ukrainian war, the answer is surprising: from cigarette filters In Xataka | Neither drones nor missiles nor AI, the war in Ukraine has turned a vehicle from 1950 into a key piece: the M113

a mysterious whistle without explanation

April 11, 2026 by usatoday24

In 1969, the Apollo 10 astronauts and one of the Apollo 11 astronauts They heard an intriguing whistle between ghostly and spatial that left them stunned. In both cases, they heard this type of music when they were flying over the Moon. Therefore, it could be expected that the Artemis II crew would have heard it as well. However, we know that he has not. Not only because they have not commented on it, but because today the origin of that sound is known and in the case of this new mission it would have been impossible for them to hear it. Nobody will believe us. It was the month of May 1969 when the Apollo 10 mission, the equivalent of Artemis II if we compare the Apollo program with Artemis, made its particular trip to the Moon. When they were orbiting around the far side of the satellite, the entire crew began to hear a mysterious whistle. The pilot, Gene Cernan, was the first to comment on the matter. “That music even sounds like outer space, right? You hear it? That whistling sound?” Everyone else joined in the comments, which later would appear in NASA transcripts. Later, John W. Young would add: “We’re going to have to find out about this, no one will believe us.” History repeats itself. Contrary to what Young thought, they did believe them. So when the Apollo 11 astronauts embarked on their own journey two months later, they were warned that they might encounter that sound. Two of the astronauts on this mission didn’t hear it, but one did. As the command module pilot, Michael Collins, would later explain in his memoirs, when he was flying over the Moon alone, with his companions perched on the satellite, he heard exactly the same noise. Even though he had been warned about it, he couldn’t help but be overwhelmed. No aliens in sight. In reality, the sound that all these astronauts heard was not alien at all, but something very terrestrial and human: an interference. Apollo 10 didn’t just fly over the Moon. He also tested the empty lander, to check that it undocked correctly from the command module. It did not touch the selenite surface, but it did separate and descend a little. It was at that moment that the sound was heard. In the case of Apollo 11, only Collins heard it at exactly the same moment. When the two parts of the ship were separated. Over time, those in charge of NASA’s transmission system discovered that it was interference between the lander’s radio system and the command module. When they separated, their respective radios they competed between them, causing this curious effect. YoIt is not possible that it was heard in Orion. On the Apollo missions, astronauts could use the command module or the landing module. While the second was on the Moon, the first remained orbiting around it, with only the pilot on board. Instead, Orion consists of a single capsule powered by European Service Module engines. For this reason, during the lunar flyby nothing was separated from the ship and there were no different radio systems that could interfere. Even so, communications systems are no longer what they were. Even if they had separated, a way would have been found to avoid interference. Or maybe not. Yeah your urine freezes and They have to wear t-shirts as blindsperhaps communication would have also given them some problems. The children surpass those parents. Artemis is a younger mission than Apollo, but it has already surpassed it in many aspects. Although the Artemis II astronauts have carried out a mission very similar to that of Apollo 10, they have gone further, breaking his record and, furthermore, they will possibly also surpass them in speed when they enter our planet again. It is a more advanced mission, but without mysterious music or whistles. It’s progress, but also a little more boring. Image | POT In Xataka | The Artemis II astronauts will carry out experiments in what will be their own study models

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