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A few years ago, manufacturers fought for the most powerful mobile phone. Now they fight so they don’t go out burning

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Not too long ago, Samsung and Apple were trying to convince us of something: the titanium It was the best material for a high-end mobile phone. As a user of both the latest Galaxy and the previous iPhone, I have to say that I agreed: we were never looking at mobile phones more resistant to shockschips and all kinds of everyday accidents. With the iPhone 17 ProApple backtracked to return to aluminum. With the Samsung Galaxy S26 Ultrathe Korean company follows the same path. What is happening? Aluminum is back, and everything indicates that it is here to stay. One of the main advantages that titanium promised over aluminum was to promise greater resistance, something that is being demonstrated the drama of the new iPhone 17 Pro and its premature wear compared to previous models. Despite this, companies are returning to aluminum. There is something that both the new Galaxy S26 Ultra and the iPhone 17 Pro Max share: they both have the largest dissipation systems ever built in their families. A titanic effort (to the point of completely redesigning the chassis in the case of the iPhone) to prevent mobile phones from burning in the hand. And there is a key point in this party: we want more and more powerful phones, but someone has to cool them down. Producing mobile phones in titanium is also more expensive, and given the current component crisiswith the RAM shot and internal memories the same wayone of the few cuts that can be made without affecting the overall phone experience is changing the material used. The question about whether we need more power or not, a few years ago, was answered with a resounding “yes.” But for some time now we are not so clear. With configurations of 12 and 16 GB of RAM, and processors that are more powerful than some desktop chips, our smartphones have been increasing power for years without determining too much. Why do we need these new limits?. AI requires RAM and not so much raw power (at least, in the use given to a phone), mobile games are already bordering on the quality of triple AAA console games, and improvements in camera come more through the redesign of algorithms and not so much through increasingly powerful IPS (image chips). In Xataka | Samsung Galaxy S26 Ultra, S26+ and S26, first impressions: a broken heart in an unprecedented commitment to AI Image | Xataka

The Ministry of Consumer Affairs wants to prohibit them for children under 16 years of age

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For years, Spain (the West, in general) has had a problem with energy drinks. According to 2025 data, 38.4% of students from 14 to 18 years old declares having consumed them in the last 30 days. And so it shows in sales: last year 105 million liters were sold; which represents a growth of almost 39% in the last four years. And today, the Ministry of Consumer Affairs has just announced that wants to take action on the matter. As explained, it will prohibit the sale of energy drinks to children under 16 years of age and will impose an additional restriction for drinks with more than 32 mg of caffeine (per 100 ml) up to 18 years of age. Does it make sense? Is it a real problem? Will the ban help? What does the Ministry want to do? For a start, Consumption wants transfer to the legal level something that was already explicitly indicated in the recommendations of the Spanish Agency for Food Safety and Nutrition. Something that also already applies in specific environments and areas of the country. However, the regulation has details that will merit detailed analysis. For example, the threshold of 320 mg/L is striking in one context (the european) that sets notices starting at 150. Above all, because a gray area will be created for drinks labeled “high in caffeine” that can be sold to minors under 18. We will have to read the details of the rule to study its implications, but what does seem certain is that, with this step, Spain is going to enormously simplify one of the big problems that its regulation had on this issue: the disparity in minimum ages throughout the country. And that, we hope, will simplify its approach from social policies and public health. But what’s the problem with all this? The image of kids with huge 500 ml cans and bright colors has become ‘normal’ and the growth is enormous (in the United Kingdom, where we have longer series, the consumption of these products increased by 155% between 2006 and 2014). And how says the Spanish Food Safety Agency (AESAN), “the consumption of more than 60 milligrams of caffeine in adolescents aged 11 to 17 years (about 200 milliliters of energy drink with 32 mg of caffeine/100 ml) can cause sleep disturbances.” And this is just the beginning of the problems it can cause. “From 160 milligrams of caffeine (500 milliliters of an energy drink with 32 mg of caffeine/100 ml), (the consumption of these drinks) can cause general adverse health effects: psychological effects and behavioral alterations and cardiovascular disorders.” An invisible health problem. Because, as we know, lack of sleep is related to immunological problems, metabolic, cardiovascular, emotional and cognitive; with disorders such as diabetes or of the obesity. It leads us to be more tired and irritable, raises our stress levels and makes us take more risks and make more mistakes. None of this means that we are going to develop one of these diseases from consuming energy drinks, but it is clear that it puts us in a complicated situation. Above all, because it coincides with what we already know from other sources. “Energy drink consumption, even infrequent, was associated with several negative health indicators. Reporting of several health-compromising behaviors increased with frequency of energy drink consumption.” They are the conclusions by Maija Puupponen and her team at the University of Jyväskylä. And how explained Julio BasultoTo begin with, these drinks are correlated “with a significant increase in the likelihood of insomnia, nervousness, anxiety, depression, impulsivity, and poor academic performance, among others.” As if that were not enough, its frequent consumption can generate “hypertension, loss of bone density, osteoporosis, poor psychological, physical, educational and general well-being, among other consequences.” But the problem goes beyond health: it is cultural. And energy drinks have become a “prestigious” cultural practice among young people that is linked to an enormous amount of risk behavior. Nobody wants to compare it with tobacco, of course: but the truth is that many of the psychosocial mechanisms involved They have everything to do with tobacco. At some point there had to be a national debate about this and better sooner than later. Image | Diego Calabresa In Xataka | It’s not just sugar, hundreds of industries try to deceive us: we have a problem and it’s time to look for solutions

The debate format that has been radicalizing opinions in the US for years. arrives in Spain. Xokas is its protagonist

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The Galician streamer The Xokas sat opposite several ideological rivals in a debate produced and presented by Ibai Llanos on YouTube. The format, which draws directly from the Anglo-Saxon model popularized by Charlie Kirk and ‘Turning Point USA’, leaves open a few questions about the politicization of streaming entertainment and the risks of a genre that turns ideas into spectacle. The Xoqué? If you have been under a virtual rock in recent months and have no idea who El Xkoxas is, here are some facts: Gonzalo Pérez grew up like streamer during the pandemic years, the same period in which platforms like Twitch They multiplied their user base in Europe. Millions of confined people found in these new communicators a company that traditional television did not offer them, and creators like El Xokas capitalized on it. Its followers are mostly young men, between 16 and 30 years old, a very important fact to understand the drift towards incendiary political opinions that its content is having lately. It becomes politicized. The transition of gaming to the political commentary It was not a leap, but a gradual change. Xokas incorporated opinions on current affairs, criticism of what he called “single thinking” and positions on cultural debates (feminism, identity, political correctness) that generated more opinions for and against than any video game game. The search for controversy is a strategy that YouTube algorithm rewards to a greater extent than neutral content. Its truthfulness or independence are aspects completely unrelated to success. Consequence of this drift: He doesn’t invent anything. The “political streamer” is a figure who has come a long way outside of Spain. Figures like Tim Pool either Steven Crowder In the United States they created a template that El Xokas is now repeating: they build a base audience on entertainment topics and when they grow, they pivot towards political commentary, without losing followers along the way, and gaining many new ones. Until recently, our ecosystem of creators declared itself apolitical, with successful streamers like Ibai or El Rubius absolutely oblivious to this type of controversy (and although it is often easy to detect the colors, never declared, of creators like AuronPlay, TheGrefg or Illojuan). The model that Kirk invented. And so we come to the debate of ‘Xokas vs. 8 haters’: eight people critical of the streamer’s career debate with him one by one, with Ibai as host and referee. They talked about Xokas’ personality, politics, economics or feminism and four days later, the video has exceeded four and a half million views. It is a format copied from the debates that Charlie Kirk, A conservative debater, he was organizing until his death since 2012: he in the center, progressive students rebutting him one after another, with Kirk responding to each argument before moving on to the next. The format problem. Different studies have pointed out problems with the format, which make rhetorical ability the true value of these discussions: whoever speaks faster and with more confidence seems to win even if their data is incorrect. In the absence of real-time verification mechanisms, the appearance of handling authentic data matters more than actually doing so. The central debater has an advantage due to the confrontation with successive rivals, which eliminates the pressure of arguments: every time a rival finds a line of argument, time runs out. This Spanish version has some added problems: the title itself already generates an editorial reading: naming the critics as “haters” implies that Xokas is the one who is right: if he debates against “haters”, any argument they raise is associated in advance with bad faith, not with reasoning. Politics, on YouTube. A recent Reuters report documents that Spain follows the European trend of shifting information consumption towards video platforms. Those under 35 years of age are the group furthest from traditional formats and, therefore, are more exposed to political opinion mediated by content creators. That is, the public conversation about taxes, feminism or freedom of expression occurs in environments where the editorial rules are different, more wild and less regulated than those of a conventional medium. History of controversies. To get an idea of ​​how the Xokas positions may be affecting younger people, these are some of the controversial opinions they have expressed: Critical in 2021 to ElRubius and TheGrefg for going to Andorra to pay less taxes. Less than a year later, he threatened to leave if they kept uploading them to him. His trick stolen from “a friend” to flirt with drunk girls was the one who generated more criticism outside the streaming environment, and motivated the famous video of the Ministry of Equality in which he was actively identified as one of the main sources of sexist attitudes of mass reach in Spain. In March 2022, it was discovered that her Twitter defender @CathyVipi, which she used to insult critics and competitors, he carried it himself. He stated that the majority of people who cannot change their physique are “undisciplined and lazy“, rejecting the influence of genetic or psychological factors. It was criticized how opinions of this type can affect young followers. After invest in Knoweatsa home-prepared food company, publicly attacked Wetaca (direct competition) in a live broadcast. Wetaca responded on social media by recovering previous statements from Xokas in which it said that “eating healthy is stupid“. Controlling the narrative of all these controversies is essential for El Xokas and his occasional ally Ibai. For this, nothing better than a trap debate. In Xataka | China has solved the mystery of why there are people who go bankrupt watching streams: the “榜一大哥”

700 years of consumption to challenge China

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Whoever follows it, gets it. The world has embarked on the great adventure of finding rare earth anywhere to stop depending on China. Japan, with tense relations – to say the least – was one of the most interested, and has achieved what it been searching for two years: extract rich rare earth mud from about 6,000 meters deep. But it is one thing to find it and another to refine it on an industrial level. Success. Japan had a set schedule: its advanced Chikyu ship had to leave in January 2026 in search of rare earths. In 2024 they reported the discovery of what could be one of the largest deposits in the worldwith a prospecting for the beginning of 2026. The idea was to collect a sample of mud to see the composition, and the results could not have been more promising. ago uus daysnear Minami Torishima Island, Japan signed which is considered the first successful attempt to extract rare earth sediment at extreme depths. We are talking about some mud located in a pit at about 6,000 meters deep, where it is believed that there are a deposit of more than 16,000,000 tons of valuable material. It was an autonomous vehicle deployed at that depth that, using an unmanned excavator, circulated mud from that depth to the ship through a pipe. Similar to the technique used to prospect for oil and gas. Good rare earths. Rare earths are a set of 17 metals and elements that are essential for practically any industry today. From aerospace to medical devices, our mobile phones, electric cars or headphones themselves, they all need some of the metals from rare earths. But it turns out that some are more valuable than others. It is estimated that the lands of the Minami Torishima site stand out due to its concentration in dysprosium and terbium. These two are particularly rare and valuable because they are used in vehicle engine magnets and defense technologies. They also have a certain concentration of yttrium, which is used for lasers or superconductors. The rare earth war. As we read on Al Jazeera, Japan is ecstatic. A government spokesperson commented that this is “a significant achievement both for the country’s economic security and for its maritime development.” And the truth is that the discovery could not have come at a better time for Japan. We have already commented that China is the one that dominates rare earths. Not only its mining, but its production. For decades we have let China refine them because the process is very polluting and the laws in the Asian giant were somewhat more lax. The price has been high: the entire world industry depends on China, and China has not hesitated to use rare earths as a weapon when it has come under attack. For example, in the context of the technological war or with tariffs. liberally. And, speaking of context and war, the Pacific is abuzz. China claims Taiwan and some islands held by Japan while build artificial islands with varied purposes. Japan, meanwhile, has allied itself with a United States that is testing weapons in the area and deploying maritime units. And, furthermore, they are rearming. For that they need rare earths and, on January 6, China prohibited the export of all double items use to Japan. This implies anything that can be used to improve Japanese military capabilities. The order came after the Japanese Prime Minister announced that any action by China in Taiwan It would be responded to in a warlike manner by Japan. The Chinese statement did not specify which exports would be affected, but the Chinese media suggested that heavy rare earths were in the equation. Consumption for a while. That is, in the current context, it is not a whim for Japan to stop depending on China for the production of rare earths: it is a necessity. And there are already media outlets like the Nikkei that have described the deposit as the third largest reserve of rare earths in the world. Estimates point to more than 16,000,000 metric tons of rare earth oxides, something that would satisfy domestic consumption for several generations. For example, it point that there will be more than 730 years of Japanese consumption of dysprosium and more than 420 years of local consumption of terbium. Way to go. Now, Japan has found the clue, but now it is time to confirm the estimates and, above all, start extracting and refining these rare earths. That will be the task of researchers this year to, in 2027, begin carrying out large-scale extraction tests. The idea is to get 350 tons of mud a day. Then everything has to be loaded by boat to Minami Torishima, where a first cleaning of the sludge will be carried out to separate the valuable from the mud and, then, transportation to the continent, where the refining process will take place. With everything in hand, wait that the Japanese government publishes an economic viability report by March 2028. and red flags. It is evident that Japan’s announcement is hopeful both for its independence and for the rest of the world to begin to do something with the deposits it has been finding with the aim of achieving sovereignty in rare earths. But there are also challenges ahead. On the one hand, it esteem that each ton of sludge produces just two kilos of rare earth oxides. This means that enormous volumes of material have to be processed to separate the ‘wheat from the chaff’. Then there is the refining process itself, something pollutant due to what is necessary to do it and the waste that is emitted. And finally, the worry for the habitat destructionspecifically deep-sea ecosystems that, according to environmental groups, would receive an irreversible impact. And since we are what we eat, and more countries like China or Japan than They need fish with no possible alternativeclouds of particles from the seabed can affect the food … Read more

We have been blaming mobile phones for myopia for years. Now we have a much more subtle suspect: lack of light

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It is quite a grandmother’s and mother’s phrase to hear that spending a long time in front of a screen or being very close to a book can cause us to develop a disease in the eyes like the myopia. However, science has long suspected that “close work” alone does not explain why myopia has become a global pandemic. The new. Now a revealing study has proposed a physiological mechanism that fits all the pieces of the puzzle together, placing the blame not only on what we look at, but on the amount of light that reaches the back of our eye while we do so. And the investigation is quite justified, since the data is scary. In Spain, 19% of children between 5 and 7 years old are already myopicand projections estimate that by 2050 half of the world’s population will need glasses. To stop this, we need to understand exactly the mechanism that produces myopia, and a team from New York has found the key. The famine of light. The work, recently published in the prestigious magazine Cell Reports by researchers, points to a fascinating concept in this case: the light deprivation hypothesis. Until now we knew that focusing on nearby objects is closely linked to the development of myopia. But what this study has measured with empirical precision is how the myopic eye reacts to the healthy eye during this process. What they have seen. The main finding is that myopes suffer from excessive accommodative pupillary constrictionthat is, when you look closely, the pupil becomes much smaller than normal. If we add to this that close-up work is usually done indoors where lighting rarely exceeds 500 lux, compared to 10,000 lux outdoors, the result is a lethal cocktail for the eye: the combination of dim light and a maximally contracted pupil causes the retina to “starve” due to lack of light. The short circuit. Here the question that logically must be asked is: Why does this lack of light cause the eye to grow abnormally, causing myopia? This is where the purest neuroscience comes in, since our retina processes the image through two main channels: the ON path that is activated with increases in light, and the OFF path, which reacts to shadows. In previous work from 2024, this same team had already shown that in myopic patients the ON pathways have serious deficits, since they are less sensitive and slower. Now the new hypothesis postulates a vicious circle in which, when reading or looking at a cell phone indoors, the pupil closes too much. And this is a problem, since chronic lack of light further weakens the retinal ON pathway, and this imbalance sends erroneous signals that ultimately promote elongation of the eyeball. The treatments. This proposal not only stands out for explaining the biological mechanism of myopia, but also unifies at once why the treatments that ophthalmologists They have been applying it empirically for years. One of the examples is spending time outdoors, but not because it cures, but because the sunlight is so intense that it more than compensates for having a small pupil, keeping the ON pathway stimulated and slowing the progression of myopia. Another example is the use of atropine drops in children to stop myopia thanks to the dilation of the pupil so that more light enters the retina. The same goes for multifocal lenses that are used to reduce accommodation effort, since the pupil does not need to constrict as excessively. It is not definitive. As is almost always the case in science, this work does not demonstrate a direct coincidence yet, but rather offers us an incredibly solid and plausible physiological mechanism supported by very robust data on the behavior of our pupil and neural pathways. But there is still a way to go with new long-term studies to confirm the hypothesis 100%. While we wait for those results, the practical conclusion seems clearer than ever: the problem is not just the tablet or the book. The problem is doing it in the dark, so if you are going to strain your eyes up close, make sure you turn on a good lamp and, above all, don’t forget to go out into the sun. Images | Akshit Dhasmana In Xataka | Denialism has reached one of the last corners of science still free of it: seeing glasses

A municipality in Cáceres has waited more than 30 years for its bridge with Portugal. After moving wind and tide, it is already on its way

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Cedillo, the westernmost town in Extremadura, has been separated from its Portuguese neighbors for more than thirty years by a river that, paradoxically, has always united them. The solution is easy: build a bridge. The issue is that its approval and construction has been in the works for years. Now it seems that things are finally moving forward. The problem. Cedillo (Cáceres) and Montalvão-Nisa (Portugal) are separated by just 13 kilometers in a straight line. But by car, any trip between both towns requires a detour of between 100 and 120 kilometers. The reason: the dam that Iberdrola manages at the confluence of the Tagus and Sever rivers. Until 1995, residents on both sides could cross it freely. That year, with the entry into force of Schengen AgreementIberdrola closed access citing security reasons. Since then, it has only opened on weekends, with a security guard and at controlled hours. “We are brother peoples absurdly separated,” counted in 2021 to El País the mayor of Cedillo, Antonio González Riscado, who has been in office since 1987. How did it get here? The bridge project has been circulating through offices and negotiation tables for decades without finally coming to fruition. In 2011, the Provincial Council of Cáceres, then in the hands of the PP, renounced some European funds destined for the work, according to account The Country. When the PSOE recovered the institution in 2015 and requested them again, Europe had already denied them. The project became a political bargaining chip for years. The turning point came in March 2023, when the Ministries of Transport of Spain and of Territorial Cohesion of Portugal signed a joint declaration committing to promote the initiative. Just over a year later, in October 2024, both governments signed in Faro an international agreement which established the definitive legal framework to build the bridge. According to this agreement, Portugal assumes the design, construction and financing of the main structure, while Spain facilitates the permits and procedures in its territory. The works have already started. In October last year, the machines began to move on the Portuguese side with the first land preparation work. The award went to the company Alexandre Barbosa, according to counted The Extremadura Newspaper. The bridge will be about 160 meters long and 11.5 meters wide, with two twin concrete arches that avoid placing pillars in the riverbed. In fact, as the media reports, this last technical solution was key for the bridge to obtain the favorable Environmental Impact Declaration. The total cost exceeds 19 million euros. Spain does its part. In November of last year, the Ministry of Transport and the Government of Extremadura they signed an agreement to coordinate the work on the Spanish side. The Board assumes the bidding, construction and financing of the accesses to the bridge in Extremadura territory, with an estimated budget of just over 5.1 million euros distributed between 2025 and 2028. Once the work is completed, the infrastructure will become the property of the Board of Extremadura, which will also be responsible for its maintenance. What this means for the area. The bridge is going to solve a problem that has been on the lips of the surrounding towns for decades day after day. Just like counted El País, there are residents of Cedillo who have been hearing about the bridge all their lives and whose lives have been conditioned by that barrier. According to collect El Periódico, the bridge will also shorten the distance between Cáceres and Lisbon by about 70 kilometers and half an hour. “It is a bridge that we need no matter what,” the mayor of Cedillo told the media. What remains pending. On the Spanish side, the access to the bridge was still pending bidding when Portugal already had the machines running. Both countries will coordinate the work through a Joint Technical Commission. The agreement between the Ministry and the Board has a maximum validity of four years, extendable. If the deadlines are met, Cedillo could have his bridge before the end of the decade. Cover image | The Extremadura Newspaper and Google Maps In Xataka | Spain built its roads thinking about extreme heat: the rains are showing how vulnerable they are

For years we blamed testosterone for men living shorter lives. Now we know that the culprit is a chromosome

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For decades, biology has observed an incontestable demographic fact: women live longer than men. It has often been blamed lifestyleto testosterone or to the greater male propensity for risky activities. However, science has found a much more subtle and genetic culprit that we carry in all our cells and that literally we start to lose as we get older. A genetics class. In a very general way, we must remember that all our genetic information is collected in 46 chromosomes which are found within the nuclei of our cells in pairs. But there is a part of all these chromosomes that define us as men or women: The presence of two X chromosomes defines women and the presence of one X chromosome with one Y defines men. Although there is great genetic complexity behind something as redundant as a pair of chromosomes, what interests us in this case is that science has seen a effect called mLOYwhich is literally the loss of Y chromosome mosaic in men. And different scientific articles suggest that it is not a simple side effect of getting older, but rather it is a “silent killer” that explains much of the longevity gap between the sexes. The runaway chromosome. For a long time, the Y chromosome was considered the “little brother” of the genome. Small, with few genes and almost exclusively responsible for determining the male sex with no other known functions, almost all of which fall on the X chromosome of considerable size. But the truth is that we were wrong, and the Y chromosome has great importance in the adult life of men. The mLOY phenomenon. This occurs when the cells that are in charge of manufacturing the blood elementslike erythrocytes, platelets, or lymphocytes, suffer errors when dividing and lose the Y chromosome. Something that generates a “mosaic” in our body, that is, some white blood cells have the Y chromosome while others do not. But what is disturbing is the frequency with which it occurs, since, according to the data reviewed, this is something that has been detected in 40% of men at age 60 and in 70% of men at age 90. There is damage. Until recently, it was believed that losing this chromosome was benign and normal, a simple “genetic gray hair.” But the evidence accumulated between 2022 and 2025, including massive UK Biobank studies and the recent German studio LURIChas set off alarm bells: losing the Y chromosome is not harmless and has important side effects. The heart. One of these side effects is precisely heart failure, which is a very prevalent disease in the elderly. Here science has been able to see that, by eliminating the Y chromosome in mice, the animals rapidly developed cardiac fibrosis. That is, their hearts were filled with scar tissue, becoming rigid and, therefore, having great difficulty pumping blood. But it is not the only disease that occurs, since in the United Kingdom Biobank, men with mLOY in more than 40% of their white blood cells had a 31% higher risk of dying from cardiovascular causes. And even the LURIC study published last year, carried out on 1,700 men, found that the mLOY effect increased the risk of fatal heart attack by almost 50%. More diseases. Beyond the heart, the impact of losing the Y chromosome also affects our body’s defense system to be able to combat different threats. Among them we have cancer, since the immune system needs the Y chromosome to effectively monitor the tumor cells that arise. Its loss is associated with a worse prognosis in bladder cancer and other solid tumors, since it is as if our body’s security guards had gone partially blind. In addition to cancer, the frequency of mLOY has also been seen to be up to 10 times higher in patients who have Alzheimer’swith studies showing an almost 3 times higher risk of developing the disease. The COVID. During the pandemic we saw that older men died much more than women without fully understanding why. We now know that the loss of the Y chromosome increases 54% risk of fatality for being infected with COVID in the elderly, finally offering a biological explanation for this bias. Is there a solution? It may seem depressing to know that a part of our DNA decides to abandon us and cause us so many problems, but in reality, it is a hopeful finding. And it is hopeful, since, seeing that the loss of the Y chromosome is a direct cause of a disease, therapeutic doors open. In experiments with mice, it has been seen that treatment with an antifibrotic drug was able to reverse the cardiac damage caused by the loss of the chromosome. This means that the mLOY effect can be used as a marker in a blood test, as happens with cholesterol, to predict a patient’s cardiac risk and to be able to give preventive treatments to delay it and improve the patient’s quality of life. Images | nrd Miroslaw Miras In Xataka | The X chromosome has new clues about aging: why women tend to live longer than men

China’s brutal dominance in rare earth production in the last 30 years, in a revealing graph

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There are few strategic natural resources as important as gas, gold or oil, but there is one that is less known and that is decisive in practically any industry and therefore, also in geopolitics: the rare earthwhich are neither earths nor rare (in fact, they are a list of 17 metals). The state that has enough rare earths in its territory and the capacity to extract them will have much to gain to become a power. Well, if you can cough China, the absolute leader in rare earths so much in reserves as in production. A picture is worth a thousand words. But today the power of China is discussed is one thing and another if the Asian giant started by winning the game. Spoiler: no. The United States Geological Survey It has a very complete database where to visualize production by country from 1994 to the present (among other information), but more than a table, it is better seen with images. Thus, at a glance you can see its beastly hegemony in this chart from Visual Capitalist from 1994 to 2024. 30 years of rare earth production. Visual Capitalist An animation still counts more. The Visual Capitalist illustration shows Chinese superiority, but the evolution of rare earth production by country is better seen with an animation showing its meteoric rise because yes, the global rare earth industry has been profoundly transformed in the last 30 years. In just three decades, China has gone from having a 47% quota to almost 70% of the 400,000 metric tons produced today (by the end of 2024). Or what is the same, going from manufacturing 31,000 metric tons to 270,000 metric tons, something that can be seen in this animation by Global Times and Valiant Panda: Tap to see the animation. Production by country of rare earths from 1994 to 2024, Global Times How America Lost Control. It’s worth stopping the animation at the beginning, because in the 90s the United States was the world’s largest producer of rare earths and Mountain Pass was its main plant for obtaining them. Its average extraction was around 20,000 – 22,000 tons. And then, in 1997, came the Mountain Pass environmental disaster: a burst pipe in the eponymous mine that contaminated the Movaje Desert with toxic radioactive waste. Between the disaster and the subsequent lawsuits, production suddenly fell to 5,000 tons between 1998 and 2002. It would then fall to 0 in the 2000s. It would be in the 2010s when it began to recover: now the United States is around 46,000 metric tons. As Rocío Jurado sang, now it’s too late, lady: it was also in the 90s when China went into steamroller mode. The unstoppable rise of China. That China has come to dominate world production hides several keys. The first, the ability of its suppliers to offer lower prices Thanks to state aid, laxer environmental standards and cheaper labor made possible costs that the West could not cope with. China had the resources, but its victory came because it was able to build an entire industry while the rest of the world watched. Producing the raw mineral is only the first step, then it must be separated to achieve a high degree of purity (between 95 and 99%, depending on the application) in a complex, expensive hydrometallurgical process that, as we have seen, leaves radioactive waste along the way. Where it still dominates more: refining. Because although China has a share of almost 70% of world production, its dominance is even more overwhelming in refining: it produces around 90% of world refining. In fact, other countries such as Australia or the United States extract minerals, they turn to China for refining. If there is no refining industry at the level of extraction, there is no sovereignty. Other faces. Trump wants to step on the accelerator of national mining and expedite permits, the EU also seeks its strategic sovereignty with laws such as the Critical Raw Materials law and its application in places like Per Geijer’s Swedish megamine. We have already talked about Australia, which at least until this year It will depend on China for refining those 16,000 metric tons that have been around in recent years, but there are other countries that have joined the race. But while the Global Times animation focuses on great powers, the Visual Capitalist graph reveals new players in the industry such as Myanmar, Thailand or Nigeria, especially focused on more scarce and valuable elements. However, their supply chains are unstable and have their own regulatory and geopolitical risks. In Xataka | The world’s rare earth reserves, laid out in this graph showing the brutal dominance of a single country In Xataka | Europe seeks its sovereignty in rare earths and knows how to achieve it the fast way: with a supermine in Sweden

We have been believing for years that intermittent fasting is the definitive weapon to lose weight. Science has another idea

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During the last years, the intermittent fasting has gone from being something exceptional to becoming a nutritional strategy that there is more and more talk and that it has more followers behind it. And it is no wonder, since the promise is quite seductive as it does not focus on what you eat, but on when you eat, activating different metabolic switches to accelerate fat burning. Although there are also detractors behind. New data. The Cochrane library, considered a great world reference, published a few days ago a great review about intermittent fasting that acts as a bucket of cold water, since it suggests that this diet does not offer superior benefits to conventional weight loss diets. The backup. We are not talking about a small study whose validity can be questioned, but in this case the Cochrane researchers analyzed 22 randomized controlled trials that added up to a total of 1,995 participants. overweight or obesity. The objective here was to compare different fasting modalities, such as going 16 hours without being able to eat with eight hours of eating, fasting on alternate days or 5:2 diet compared to classic calorie restriction or inaction. What they found is that, when pitting intermittent fasting against regular dietary advice, the difference in weight loss is virtually zero. The data. Getting into the matter, when intermittent fasting was compared With standard calorie-restricted diets, the mean difference in weight change was a minuscule -0.33%. This difference can translate into that intermittent fasting may result in little to no difference in weight loss with the traditional method. Regarding quality of life, such as the feeling of energy, no difference was seen and, regarding the levels of total cholesterol, HDL cholesterol and triglycerides, fasting did not prove to be a panacea either, yielding results of “little or no difference” compared to the control diets. The small print. One of the most critical points of the Cochrane review is the certainty of the evidence, which they rated mostly as “low” or “very low.” This does not mean that the studies are poorly done, but rather that there are important limitations, such as risk bias, inconsistency in results, and lack of precision. But there is one fact that should worry anyone who decides to opt for this diet independently, without medical advice, since, although the evidence is uncertain, some studies pointed to associated side effects specifically to fasting. These include headaches, nausea, cold intolerance or even insomnia and lack of concentration. What is not yet known. Perhaps it is the most revealing thing about this scientific study, since there are still many unknowns surrounding intermittent fasting that invite further research. In this case, none of the 22 studies included data on “patient satisfaction,” which is important because we don’t know if people prefer to go hungry for a few hours in exchange for eating more later, or if they hate the process. And being comfortable with a diet is essential so that you don’t abandon it halfway through. In addition to this, none of the studies pointed to the relationship that may exist in chronic diseases that require significant dietary control, such as diabetes, and which is very common in the population. But one of the big problems in science today is duration, since most studies lasted less than 12 months. We don’t know if fasting is sustainable or safe beyond a year. It is not a miracle diet. What we do know is that intermittent fasting works, but the key point is that It is not superior to the tools we already had as a calorie restriction accompanied by a balanced diet and exercise. For the average patient, this is actually good news: it means that the The best diet is the one you can stick to. If someone finds it easier to skip breakfast with a 16:8 fast than to count calories at each meal, fasting is a valid tool. But if fasting causes headaches, you’re not missing out on any “magic” metabolic benefits from eating three times a day. Although in this process the most important thing is always to be advised by personnel who are qualified in nutrition to be able to have the best dietary plan, to have real objectives and, above all, not to get frustrated along the way. Images | VD Photography In Xataka | We believed that a vegetarian diet guaranteed longevity. In extreme old age, the data says just the opposite

Registrations are plummeting for the first time in 20 years

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Computer engineering is a classic among the most in-demand jobs in recent years. In fact, without going any further, it was the university degree with the most job opportunities in 2025. However, it faces an abyss: that of a future with AIwhich we have already seen is beginning to wreak havoc among junior profiles. Generation Z seems to have noticed and after two decades of continuous growth, enrollment has begun to decline in the mecca of computing: the Universities of California. Context. For decades, studying computer science has been a true bastion of employability, whether choosing for the race as in their variants in FP version. That is to say, if you wanted to study a career that would guarantee you a specialized job, something especially interesting for the middle and lower classes, in computing you would find real life insurance. The San Francisco Chronicle has captured the data of the set from California universities in a graph showing that not even the 2008 financial crisis or the COVID-19 earthquake managed to undermine its appeal: computing seemed armored against crises. Computer science enrollments on California public university campuses since 2000. Data: University of California Something is changing in computing. More specifically, data from the University of California shows that 12,652 computer science degree students have chosen computer science this year, this is 6% less compared to 2024 and 9% less compared to 2023. It is true that it is almost double what it was a decade ago, but the decline is clear taking 20 years ago as a reference, the time when there was the last (slight) decline. The data in question does not come from a specific university or from any group: we are talking about the small group made up of the public universities of California, which include illustrious ones such as UCLA, Berkeley or San Diego. Therefore, Stanford does not appear in these data as it is private. Why is it important. Because the perception of computing as a choice that guarantees success is no longer what it was: on the one hand, because AI is taking away opportunities who starts to work and for another, for the big layoffs What we are seeing in big tech. Furthermore, it has brought a paradigm shift: parents no longer encourage studying computer science as much as they do other more classic and tangible engineering: electrical, mechanical… according to what personnel related to admission to these universities know, whose statements collects the Californian media. And this is not just happening in California, but it is a global phenomenon. The Universities of California are leading the way: what happens at Berkeley or UCLA is a preview of what we will see soon here as well. Without going any further, the University of San Diego got ahead last year creating an AI career Let’s see how it goes. Spoiler: it was a total success, like acknowledges Steven Swanson for TechSpotthe department head and computer science professor. kitchen ear. A deeper analysis of data from California universities shows that it is not that there are fewer technology students, it is just that they are changing their choices towards more specific and emerging ones. Between the success of emerging and specialized programs and these data, universities already have a pending issue on the table: carrying out a curricular transition. Classical computing is becoming a transversal subject and not the final destination, that is, it is no longer so important how a tool is built (chopping code), but rather how to think and how to validate it in a future in which its students will have to work side by side with AI. In Xataka | If Spain wants to imitate China and be a “country of engineers”, this map reveals the extent to which it has a problem In Xataka | Studying with AI without thinking teaches nothing: these tips can help you take advantage of it and really learn Cover | Vitaly Gariev

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