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We just found an entire ecosystem hidden under the ocean crust

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For decades, science believed it was clear how life worked in the ocean abysses and pointed out that around the hydrothermal vents, which are the classic volcanic chimneys that spit out boiling water, oases of strange creatures flourished on the surface of the seabed. But a recent expedition has broken our schemes and it points out that life not only clings to the surface of these chimneys, but also hides beneath the earth’s crust itself. As we have seen. To achieve this featthe expedition named under the “VentUnderoworld” project entered the waters of the Pacific aboard the research vessel Falkor. But the researchers’ eyes were not enough, they had to use the robot SuBastian ROV submarine. And with this equipment the researchers did something that is rarely attempted: physically lift fragments of the oceanic crust around the hydrothermal vents. And in that underwater “underworld,” a vibrant macroscopic ecosystem thrived. What was seen. Until now, science assumed that benthic animals at these depths lived exclusively at the interface between the ocean floor and water. However, the images and samples collected confirmed the presence of live animals in these underground caves. And the great protagonist of this discovery is the Riftia pachyptila, which is nothing more than a huge tube worm which can measure more than two meters. Organisms that are famous for lacking a mouth and stomach and depending on the bacteria on the seabed to feed themselves while they were living and growing prosperously protected under the crust. But they were not alone, since they also found snails and a complex network of invertebrate animals. How they arrived. One of the great mysteries surrounding marine biology was how tube worms managed to colonize new hydrothermal vents so quickly after a volcanic eruption, especially due to the high temperature it reaches. This discovery provides the missing piece of the puzzle. Here the study concludes that there is a fluid connection between surface and subsurface ecosystems, and this causes the larvae of these animals to travel through hydrothermal fluids below the seabed, moving through cracks in the oceanic crust to colonize new areas from bottom to top. That is, the interior of the crust is not only a refuge, but a kind of underground “highway” of life. A new paradigm. This discovery is not something minor, since if these hidden cavities are inhabited in the Eastern Pacific Ridge, it is very likely that this underground ecosystem extends over a large part of the world’s underwater mountain ranges. In this way, expanding the “biosphere” into the interior of the crust means that the habitable volume of our planet has just become much larger, proving that there are still many mysteries here on our planet to be discovered. Images | bearfotos on Freepik In Xataka | China is making an “invisible ocean” of the planet: when it is finished it will steal the last advantage that the US had left

The Pentagon wants to invest $54 billion in drones. It is more than the entire military budget of countries like Ukraine

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The defense budget that the Pentagon has presented for fiscal year 2027 amounts to $1.5 trillion. It is the largest year-on-year increase in military spending since World War II, but in that colossal figure there is another that deserves special attention. This is the $53.6 billion allocated exclusively to drones and autonomous warfare technologies. That amount alone exceeds the Ukraine’s full defense budget either of countries like South Korea or Italy. Spain is even further away. autonomous defense. The money for this specific program will be managed by the Defense Autonomous Warfare Group (DAWG), an agency created at the end of 2025. In the 2026 budget it received 226 million dollars, but in 2027 that figure would be multiplied almost by 240. The United States has realized the relevance that drones have gained in war conflicts and wants to be prepared for this new era of defense. Obsolete investment. The Pentagon itself recognized something striking: the vast majority of the money requested will be used to buy technology that already exists, not to develop future solutions. One of the top officials of the Joint Chiefs of Staff, Lieutenant General Steven Whitney, admitted that technological evolution on the battlefield currently happens in weeks, not years. It’s like admitting that what you buy now may become obsolete almost immediately. Ukraine showed that change has changed. The urgency of this budget does not come from nowhere. The war in Ukraine has rewritten the rules of modern combat In such a way that there are many countries that are processing how to assume these changes. Iranian Shahed droneswhich cost about $20,000 per unit, have proven capable of saturating air defense systems that cost hundreds of times more. Relatively affordable quadcopter drones have destroyed multi-million euro tanks and armored vehicles. Defense budgets in 2025. The US already spent 921 billion dollars last year, this year it wants to spend 50% more. Everything goes very fast. The speed of tactical adaptation on the Ukrainian front has been so high that innovations and tactics that work in January may be obsolete by March. Not because someone has invented something better, but because the adversary has found a way to counter those strategies. The Pentagon has reached an unusual conclusion: the traditional model of weapons acquisition that operated in cycles of years or even decades is structurally incompatible with the speed at which current war conflicts are developing. The irony of the Shahed. Among the most striking details of the budget is the confirmation that the American army has adapted the technology of the Iranian Shahed dronewhich is the same one that has been attacking cities and energy infrastructures in Ukraine for years. The US has done reverse engineering of your adversary’s design to incorporate it into your own arsenal. This clearly illustrates the current war reality: the origin of the technology does not matter, but its effectiveness. Risks. This tension between “we have to spend more” and the speed at which it is necessary to adapt to this reality poses an enormous risk. Buy en masse what works today guarantees that solutions will be available tomorrow. The problem is that these solutions may be technically inferior to those that the adversary has developed in the meantime. The same thing happens if you decide not to buy anything until you have the perfect technology, because that means arriving late (or not arriving at all). It is a dilemma similar to that of technology companies and their investment in infrastructure: they have to buy solutions now that they know that they will end up being obsolete in the short or medium term. Final approval is missing. The US Congress will have to approve the budget, which introduces an important political variable. Beyond that, there is a fundamental question in those 54,000 million in this budget. If drone technology evolves in weeks, there is no money that will be able to buy that adaptability to the modern battlefield. And that even with this immense budget superiority cannot be guaranteed makes clear the sign of the times. In Xataka | The percentage of GDP that each country allocates to Defense, shown in this graph with an unavoidable protagonist

We thought we were 8 billion people on the entire planet. Until some researchers started crunching the numbers

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In November 2022, the UN celebrated that we were now 8 billion humans on Earth. They are estimates, of course, but beyond the figure, the really interesting thing is that in 2023 we do not reach the replacement rate and that humanity will reach its peak at the end of the century to, inevitably, start to fall. But… to what extent can we trust these accounts? It is something that has been on the table for some time and, according to a study of 2025, we have made a mistake in counting. So much so that we have left several hundred million people behind. Can we trust the numbers? “Calculating the number of people on the planet is an inexact science.” That was demographer Jakub Bijak’s comment to BBC in mid-2024, just when the World Population Prospects study. Something scientific is something exact, but the researcher also commented that the only thing you can be sure of when predicting population figures is the lack of certainty. That, be careful, does not mean that demographers take figures out of thin air. “It is a difficult thing based on our experience, knowledge and every piece of information we have access to,” said Toshiko Kanera, an expert in demographic forecasts. Demographers draw on the data and trends of each country since 1950, but… what if it had not been counted correctly? We are missing millions. In a 2025 study published in Natureresearchers at Aalto University in Finland show how the data sets handled by demographers “profoundly and systematically” underestimate population figures around the world. The serious thing is that we would be talking about hundreds of millions more people living on Earth. Example of the tools that demographers use in their analysis. Each one corresponds to a different bias Rural areas. Josias Láng-Ritter is one of the researchers in charge of the study and points to the accounts carried out in a specific segment: that of rural population. “For the first time, our study provides evidence that a significant proportion of the rural population could be missing from global population data sets,” he notes. As we say, we are not talking about a few million, but billions. “Depending on the data set used, rural populations have been underestimated between 53% and 84% in the period studied. The results are notable, since these data sets have been used in thousands of studies and have widely supported decision making, but their accuracy has not been systematically evaluated,” comments the researcher. The map shows the location of the 307 rural areas analyzed in the study. The populations reported in the graph were found to be underestimated by between 53% and 84% | Aalto University Biases. Attempts to review this data are not new, but previous research has focused on specific countries or urban areas. Researchers from Aalto University wanted to give a more global picture by comparing the five most used population data sets worldwide. They have used maps that divide the planet into high-resolution grids and have taken something very specific as a reference: resettlement figures from more than 300 rural dam projects in 35 countries. Why this bias of the dams? Because when a dam is builtthe population that lives in the area that will be flooded is relocated and accurate resettlement data is usually available. Comparing that population data from 1975 to 2010, the researchers found that the 2010 maps were more accurate, but still left out between 32% and 77% of the rural population. Between 2015 and 2020 the data sets were updated, but demographers continue to believe that underestimation of the rural population continues to exist and is a problem that persists in all regions of the world. Consequences. And we are talking about a problem whose resolution is complex. According to the researchers, no matter how much the data is reviewed, it is a structural problem. Governments do not have the resources to collect accurate data in these rural regions, there is a huge discrepancy between the real population and that reported on the population maps used to carry out demographic studies and that influences decision making. Average percentage of rural population underestimated (red and orange) and overestimated (blue) | Aalto University And it’s important. Current estimates place 43% of the 8.2 billion inhabitants of the world in rural areas -about 3,526 million people- and if we take into account that it is a percentage that has been underestimated between 53% and 84%, we are not talking about a small population, precisely. And it is essential to know exactly how many we are for a simple reason: the redistribution of resources. No data. The lack of accurate demographic records can affect political decision-making. Ritter gives the example of social decisions. “In many countries, there may not be enough data available at the national level, so they rely on global population maps to support their decisions: Do we need a paved road or a hospital? How much medicine is needed in a specific area? How many people could be affected by natural disasters like earthquakes or floods?” he says. Doing quick math, in the best scenario – that of 53% deviation in the rural population – we would be talking about 1,869 million people who would not have been counted. In the worst case, in that of the 84% not registered, we would talk about 2,962 million people. In the Nature study, they give the example of Paraguay, which in the 2012 census may have left out a quarter of the population. Reviewing the methods. In the team’s analysis, there are countries that fare better than others. They point to Finland as an example of reliable data, even in rural regions, because they began keeping digital records of the population 30 years ago. However, in countries where this thorough digital registration has taken longer to be implemented due to crises of any kind, the differences between the real population and the estimated one can be significant. “To provide rural communities … Read more

CATL is the largest battery manufacturer in the world and has a new goal: electrify the entire sea

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CATL, the Chinese giant that dominates the global battery market for electric vehicles, it has become entrenched to move towards a new front: the electrification of maritime transport. It makes more sense than it seems, but it is still a great technical challenge. Although the company is not caught by surprise. Below these lines we tell you all the details. What you are already doing. The company, which controls 37% of the global market for batteries for electric cars and 22% of the energy storage market in electrical networks and data centers, has been working in the naval sector since 2017. It has so far deployed its battery systems on about 900 vessels, although mainly on small ships operating near the Chinese coast, in ports or on rivers. Its subsidiary dedicated specifically to powering ships already exists, and this year it plans to more than double the team’s staff, reaching around 500 people, according to confirmed Su Yi, the head of that division, told the Financial Times. Why now. As the media shares, the maritime sector is responsible for 3% of global carbon emissions, and the International Maritime Organization has set itself a goal halve those emissions by 2050. But there is another more recent catalyst that has made many companies reconsider: the recent escalation of war between the United States and Israel against Iran and the temporary closure of the Strait of Hormuz. The war in the Middle East has once again highlighted the fragility of energy supply chains and CATL has a good margin of maneuver there. According to counted To FT Neil Beveridge, an analyst at Bernstein specializing in energy in China, the long-term consequence of this type of situation will be an acceleration of the “global mega-migrant towards electrification.” CATL shares on the Shenzhen stock exchange have risen about 13% since the conflict with Iran broke out. The challenges. Electrifying boats is not like electrifying cars, up to this point I think we are all clear. But seriously, batteries have a much lower energy density than traditional fuels, making them impractical for long-distance ocean crossings. The middle shared the study by the Mærsk Mc-Kinney Møller Center for Zero Carbon Navigation, in which they concluded that the most promising approach in the short term is hybrid: combining electric propulsion with combustion engines. Added to this are extra risks that come from the marine environment itself: greater exposure to humidity and salinity, much more difficult evacuation conditions in the event of a fire, and the need for more demanding maintenance than in any car. Replicate the truck business model. CATL does not want to limit itself to selling batteries, as it wants to build an entire infrastructure around it, just as share in FT. It already operates in China a network of battery exchange points for trucks on highways, and now intends to take that same model to the sea. The idea is that ship operators can change their batteries in port without having to charge them, which would also eliminate that cost from the ship’s acquisition price. The company is working with municipalities and ports to develop this ecosystem from scratch; Cities like Guangzhou, one of China’s major shipbuilding centers, already offer subsidies for electric-powered vessels, according to share the middle. A personal story. There is a rather curious detail in all this. And just as account FT, Robin Zeng, founder of CATL, studied marine engineering at university before switching to electronics. “Naval engineering was his original discipline and passion,” Su Yi explained to the outlet. It has its advantages, because over time this discipline could end up becoming the next great industrial transformation of your company. Financial muscle. CATL closed 2025 with a net profit of 72.2 billion yuan (about 10.4 billion dollars), 42% more than the previous year, driven mainly by demand for energy storage. From this position of financial strength, the company has the muscle to invest long-term in a sector where margins are still uncertain. We’ll see how the company ends up doing. Cover image | Wikipedia and Elias In Xataka | In 2022, Europe forced energy companies to swallow the cost of the gas crisis. Now she’s willing to do the same.

The entire global electricity grid, in an impressive interactive map that shows the evolution of the energy transition

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There are few infrastructures as complex and essential to living in the world as we know it as the electrical grid, which in practice for most mortals is reduced to touching a switch or connecting a plug to the socket and it works. Behind the world’s electrical infrastructure there is a huge conglomerate of equipment, careful planning and uses that are changing (among other things, due to the now so famous data centers). It is not the only thing that is being transformed: the energy transition is making it possible for those resources that once supplied the electrical grid to give way to renewable energies. But not all countries in the world have the same density of electrical networks or the same sources, because in fact there are real black holes in this very complete world map of the electrical network. Is called OpenGridWorks and is an interactive map of the entire world’s electrical infrastructure, from a small solar plant to the great lines that cross continents. And we already told you that it attracts attention not only for the beauty of the chromatic compositions, but also for practical purposes: from planning an engineering project to analyzing energy policy. Opengridworks This map is actually a web platform for geospatial visualization of electrical infrastructure. All its data comes from OpenStreetMap, the world’s largest open, collaborative geographic database, maintained by volunteers and experts on an ongoing basis. This guarantees global coverage, constant updating and completely free access. But for network and infrastructure data it uses information from Global Energy Monitor or the United States Energy Information Administration, among others. Its purpose is to show, in a clear and interactive way, where electricity is generated, how it travels through the grid and where consumption is concentrated. It is worth stopping at the layers and all the information it shows because as we warned you before it is very complete, so if you leave all the options activated you will find yourself in a mess. If you move on the map and get closer, you will be able to see information such as: What technology provides the energy in the form of a colored bubble: blue for hydroelectric, red for thermal, yellow for solar, green for wind and purple for nuclear. The size of each bubble represents the installed capacity in MW Transmission lines are drawn thicker the higher their voltage (from 100 kV to 765 kV) and substations appear as nodes where these lines converge. Data centers also appear in the shape of a white diamond as they are points of intensive consumption. On the other hand, easement strips (ROW) appear as shaded areas around lines and facilities. Opengridworks But you will also be able to see additional information when you hover the pointer over any of the points. An example: when touching the Montes de Cierzo wind farm in Tudela, we will see that it is in operation and the energy it provides. What the global electrical map reveals about the energy transition Playing with the zoom and scrolling you quickly discover that there are areas of saturation and others that are a desert of infrastructure. From an engineering point of view, the map allows you to search for the closest interconnection point for a new project or detect nodes whose failure would leave regions without supply. Beyond engineering, it is an energy policy tool: it highlights the electrification gaps in developing countries, shows the real progress of renewables compared to fossil fuels, and allows the resilience of different national networks to be compared. AND abysmal differences are observed. Opengridworks The densest networks They are concentrated in the United States, central Europe and China, while sub-Saharan Africa and central Asia show very poor coverage that reveals an electrical blackout. In South America, the areas with the most infrastructure are on the Atlantic coast, although there are also some timid points on the Pacific coast. However, inside we barely find more than a fade to black. The colors of energy sources also change on the map, still dominated by thermal generation, although in Western Europe and China the advance of solar and wind power is a reality already perfectly visible. This map also reveals curiosities such as that nuclear plants always appear next to rivers or coasts due to cooling needs and hydroelectric plants are concentrated in the large river systems of the world. The data centers are also not placed at random, but are clustered near large transmission nodes to ensure supply. In Xataka | How much electricity each country on the map produces with renewable energy, displayed on a graph In Xataka | The amount of nuclear energy generated by each country, detailed in this interactive map Cover | OpenGrid Works

This engineer found 1,351 loose photos in his grandmother’s house. He ended up building a personal Wikipedia of his entire life

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It all started with a closet full of old loose photos. Last year an engineer named Jeremy visited his grandmother’s house for the first time since the pandemic and unknowingly came across a treasure. 1,351 on paper, without order, without dates and without context. Some were in black and white, from when his grandparents were 20 years old. Others were from his mother as a baby. The last ones were from him in high school, just before smartphones arrived and everything moved to the cloud. What began as a family organization exercise became a fascinating project over the weeks: a personal encyclopedia. A Wikipedia of his own life. First, the physical photos and the grandmother. The first problem he encountered when starting his project is that physical photos do not have EXIF metadata. There is almost never a capture date (although some cameras superimposed it), there are no GPS coordinates and there is no information that allows them to be easily sorted. What Jeremy did was resort to a much more direct solution: sit down with his grandmother and ask her about the photos. Remembering that it is a gerund. In that conversation she rearranged the photos of their wedding and narrated the details while he took notes. Names, places, who was sitting where, what each ritual meant. With those notes, he set up a local instance of MediaWiki, the same software that Wikipedia uses, and wrote a page about the wedding following the same format that was used on Wikipedia to royal wedding between Prince William and Kate Middleton in 2011. Within two afternoons I had a complete article with scanned photos, captions, links to empty pages about each person mentioned, and links to the real Wikipedia to give historical context to the events. Digital photos and Claude Code to get the job done. Jeremy realized that things could get worse and took the opportunity to do tests with digital photos, which do have EXIF data with date and time and even GPS coordinates. With that information he wanted to see how far he could go without interviews, so he took 625 photos from a family trip to Coorg (India) in 2012, put them in a folder and opened Claude Code in that directory with a simple instruction: compose a Wikipedia page by browsing the images. The model used ImageMagick to create contact sheets that allowed him to process multiple photos at once, and the magic of AI did the rest. The result was a detailed draft chronicling the trip organized by time of day. Without location data, just with timestamps and visual content, the AI ​​model was able to identify the places that appeared in the photos, including some that Jeremy himself had forgotten. It even detected the means of transportation used between destinations just with what it saw in the images. When AI starts remembering for you. Then came the most ambitious experiment, when he wanted to go further with a trip he took to Mexico City in 2022. He had 291 photos and 343 videos taken with an iPhone 12 Pro with GPS coordinates in the metadata, but he also exported his Google Maps location history, his Uber trips, his banking transactions and his Shazam history. By including all that data and sources, the model was able to cross-reference banking transactions with location data to identify the restaurants where he had eaten. For example, he found images of a soccer match in the photos but did not remember which teams were playing, but he found out that information by crossing those photos with bank transactions in which he found a Ticketmaster invoice with the name of the tournament and the teams, and incorporated them into the page. He also used Shazam’s history to describe the music playing in each location. From photos and memories to a personal encyclopedia. A wonderful project that now anyone can replicate thanks to the whoami.wiki website. First the trips, then the friendships. What started as a travel documentation project evolved into something more personal. The Facebook, Instagram and WhatsApp archives contained some 100,000 messages and several thousand voice notes exchanged with close friends over a decade. The AI ​​model managed to convert all this information into a unique biography, identifying vital episodes of the protagonists, then converted into pages that, according to Jeremy, “read as if they were written by someone who knew us both.” When he shared the pages with those friends, they couldn’t stop reading those stories and wanted more. MediaWiki as a master ingredient. One of the most interesting decisions of the project is the choice of software. MediaWiki, Wikipedia’s engine, turned out to be an extraordinarily suitable tool for that use case. AI models understand this perfectly because they have been trained with millions of Wikipedia pages and know their structure and functioning. Discussion pages serve to control the development of those pages, categories group pages by topic, and revision history monitors the evolution of each page. All of this infrastructure already existed, and it was not necessary to create a new platform to organize the information that Jeremy was providing. Surpriseyes. At the end of his story, Jeremy explains that after the process: “I realized that I was no longer alone working on a family history project. What I had been creating, page by page, was a personal encyclopedia. A structured, navigable, interconnected record of my life compiled thanks to the data I already had around me.” Documenting her grandmother’s life revealed things she didn’t know: her years as a single mother or the decisions she had to make, for example. Going through the history of his friendships allowed him to recover moments that he had almost forgotten and made him call some of them to remember them together. “The encyclopedia not only organized the data, it made me pay more attention to the people in my life,” he explained. you can do it too. The project has been so rewarding for him that he … Read more

The entire ocean floor of the Earth, in a spectacular 3D interactive map that reveals 50,000 unknown underwater mountains

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Although we are already looking other planets in the universe (especially interesting are the potentially habitable ones), the reality is that the old Earth still has a few hidden secrets left. Without going any further, the seabed continues to delight us with new species at this point in the film. NASA knows this and that is why in December 2022 it launched a satellite into space with a mission: to achieve topography of surface waters and oceans. Hence its name, SWOT. Already the first year managed to map the ocean floor in more detail than in the last 30 years and is now available in full. It is, in short, the most detailed marine gravity map in history. What he has “seen” is not just the ground, but subtle variations in the height of the sea surface. These variations reveal the existence of thousands of underwater mountains, trenches and faults, invisible to conventional satellites. To prepare this map, NASA has used state-of-the-art phase coherence interferometry, which has made it possible to measure the two-dimensional height of sea level with high precision. Historically, sonar has been used to measure the seabed, but we have only managed to map less than 30% (with the Seabed 2030 project) with this technique. On the other hand, standard satellites offered a resolution well below the achieved spatial resolution, close to 8 kilometers. This exhaustive map of the ocean floor goes beyond satisfying geographical curiosity, the impact of this cartography It is evident in: Biodiversity. Underwater mountains are oases of life and knowing where they are is essential. Safety in navigation, allowing the identification of underwater peaks that may constitute a risk for vessels. Climate change. These types of structures are directly related to ocean currents, responsible for transporting heat. If we do not know the relief, we cannot predict how the sea will warm. The map of the seabed with a level of detail never seen before With this vertical gravitational gradient map, NASA has developed a 3D model through which you can move and zoom through all the depths of the seas and oceans of the Earth. Individual abyssal hills measuring 200 – 300 kilometers in length can be seen along with other small seamounts and tectonic structures, previously hidden. In fact, abyssal hills are the most common landform underwater (in the southern Indian Ocean they can be seen, for example). NASA explains that they are formed by normal faults along the axes of the oceanic ridges. From them, plate reconstruction studies are being carried out. Also in the visualization you can see seamounts located west of Central America, which are actually underwater volcanoes formed by magmatic intrusions through the oceanic crust. Their importance is crucial as they modify ocean circulation, influence the distribution of nutrients and constitute key points of biodiversity. The high-resolution mapping reveals some 50,000 previously unknown seamounts approximately one kilometer high. Tap to go to NASA’s 3D model of the seafloor. Via: NASA/JPL The topography of surface waters and oceans from SWOT also shows great clarity in the continental margins, highlighting the high latitude areas, with tectonic structures buried under sediments and ice. Thus, it allows observing submarine canyons that transport sediment from the mainland to the deep sea along the South American continental shelf, as well as ancient mid-ocean ridges hidden under the ice in the Weddell Sea. In Xataka | Astronomers have stitched together 10,000 images from the Webb telescope to make the largest map of the universe. Something doesn’t fit In Xataka | This is the impressive interactive map to see the Earth in 4K live from space and monitor satellites Cover | POT

We have spent our entire lives blaming spring for our tiredness. Science has just shown that we have lived deceived

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March is coming, the days are getting longer, temperatures rise and suddenly our body begins to fill with a feeling tiredapathy and drowsiness that takes over us. Traditionally, this is considered ‘spring astheniaand people, logically, do not stop searching for their symptoms on the Internet and buying expensive vitamin complexes to compensate for the bad feeling that the change of season leaves. But… What is true in all this? A paradigm shift. Until recently, evidence on this phenomenon was scarce and contradictory; however, a key investigation published in the Journal of Sleep Research has recently come to shed light on the matter. The research, led by Dr. Christine Blume from the Center for Chronobiology at the Psychiatric University Hospital of Basel, followed 418 adults from Germany, Switzerland and Austria for more than a year, from April 2024 to September 2025. Every six weeks, participants answered questionnaires about fatigue, drowsiness, insomnia and sleep quality, and at the end of the research they only had to cross-check information to determine if there really was any interfering pattern. with our health. The results. Here what was seen is that a resounding 47% of the participants claimed to suffer from “spring asthenia”, but the reality is that when the information was cross-checked there was absolutely no seasonal or monthly variation in the levels of fatigue, daytime sleepiness or quality of sleep. And statistically the tiredness that people feel in spring is statistically identical to what they feel in autumn or winter. In fact, fatigue in daily activities tended to decrease slightly as the days had more daylight hours, without any specific “peak” of fatigue being recorded during the spring. In this way, the conclusion drawn is that the discrepancy between what people think they feel and what objective data shows suggests that we are dealing with a cultural phenomenon and not a genuine seasonal syndrome. Why do we believe it? This is where the study gets genuinely interesting, since the authors do not simply deny the phenomenon, but rather propose a psychological explanation for why we experience it so convincingly. Nocebo effect: if we expect to be tired in spring, we interpret any sign of fatigue as confirmation of what we thought was going to happen. Cognitive dissonance: good weather generates high social pressure to enjoy it with outdoor activities. The problem is that when the energy does not appear, saying that you have ‘spring asthenia’ is a good excuse to not feel guilty for not following the group. Labeling effect: Like wine tasting better when we’re told it’s expensive, knowing that “you get tired in spring” actively changes how we interpret our own physical sensations. What chronobiology says. It is a reality that we are not robots and that our body reacts to the environment, and this is where chronobiology confirms that there are seasonal variations in sleep linked to the number of hours of daylight we enjoy. Studies in pre-industrial populations in Tanzania, Namibia or Bolivia show that in winter they sleep approximately one hour more than in summer. Likewise, recent research on university students in Seattle confirms that exposure to daylight is vital for our circadian rhythm, however, none of these physiological changes translate into a “clinical picture” or a peak in fatigue in spring. In medicine. Nowadays, when you go to your primary care doctor, it is impossible to receive treatment for ‘spring asthenia’ because it is not included in any official classification. However, doctors warn that a patient who arrives with great fatigue for consultation should not be sent away, even though he relates it to the arrival of spring. It must be remembered that there are many diseases that can cause this condition, such as anemia, a severe allergy, an infection or even thyroid disorders, among others. A lucrative business. While science dismisses the existence of ‘spring asthenia’, the reality is that people’s sensation is the perfect breeding ground for private clinics and dietary supplement brands. When we feel bad, we want a quick solution with a pill, and this makes the sale of multivitamin complexes, caffeine pills and a host of products related to reducing fatigue increase their sales. Images | Vitaly Gariev Arno Smit In Xataka | Only one in four Spaniards has rested on vacation. The culprits: work anxiety and the inability to disconnect

A brotherhood in Sagunto has closed its doors to women during Holy Week. The decision threatens to cost the entire town

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What weighs more, tradition or equality? It seems like a whimsical question, but it’s exactly the same as yesterday they had to consider hundreds of brothers from Sagunto. There the members of Sang de Sagunt have had to make a controversial decision with Holy Week around the corner: Keep the doors of their brotherhood closed to women, preserving the status quo with which they have functioned in recent centuries, or accept the requests increasingly pressing of the women who want to procession just like the men of the town? For them there are few doubts. What has happened? That nothing will change in Sagunto. At least for now. Yesterday the brotherhood of the Sang de Sagunt decided by an overwhelming majority that it will remain faithful to tradition and keep its door closed to women. The members of the brotherhood with the right to vote were called to a conclave in which they had to decide a crucial question: whether or not to alter the statutes so that where it now says “male” it now includes “any baptized person”, a small change that would nevertheless allow women to participate in the work of the entity. The brothers voted for do not touch a single comma. What was the result? The vote was held behind closed doors, but its results were not long in coming. To begin with, we know that of the 1,627 brotherOnly 403 voted, all men, of course. Regarding the result, the ‘no’ to the change won resoundingly. 267 people spoke out against altering the statutes compared to 114 who supported it. Another eight brothers abstained, 12 voted blank and two issued invalid ballots. The result throws a bucket of cold water (the umpteenth) on the claims of the dozens of women of the Semana Santa Inclusiva Sagunto collective who were waiting gathered at the doors of the temple where the summit was held. Why is it important? Beyond the vote and what it means for the brotherhood, the result is important for several reasons. To begin with, it shows that, despite the attempts at Inclusive Holy Week, the message of equality is far from reaching the brotherhood. It’s not just that the ‘no’ won overwhelmingly, it’s that it’s the third time that the brotherhood has spoken out in that sense. A similar vote was held in 1999 in which only nine brothers They spoke out in favor of the inclusion of women. In 2022 the experience was repeated with the same result, although the ‘yeses’ shot up to 135, leaving at least a positive reading for women. Yesterday the vote did not even leave that little consolation. Support plummeted to only 114. Are there more reasons? Yes. Yesterday’s vote is also relevant for what it may represent for Holy Week in Sagunto. In February elDiario revealed that the Ministry of Tourism had initiated an investigation file to decide whether or not to remove the label Festival of National Tourist Interest (FITN). The reason: precisely the lack of gender equality in the brotherhood that has been in charge of the central events of Holy Week for centuries. The loss of the title would be a lot more than a simple administrative formality. The FITN label clears the way to benefit from promotion channels and subsidies, so if Sagunto loses that label it could be affected at a tourism level. The Government already has advanced which, after yesterday’s vote, has decided to initiate a file to “revoke” the 2004 declaration. Why did they vote against? In the background there is a key debate: Maintain the current status to preserve tradition or adapt it to the values ​​of the 21st century for greater equality? As the reporters who were waiting yesterday for the result of the vote at the doors of the temple explained, arguments in favor of both positions could be heard in the streets of Sagunto. At the summit, however, the first one won with arguments like “tradition is tradition” or that women can set up their “own brotherhood.” “We are sad, above all disappointed,” admits to The Newspaper Blanca Ribelles, from Holy Week Inclusive. “I thought that our society would have evolved and that we would be more mature than three years ago, because equality is something that is no longer questioned. It is not about being more, but about equality.” After collecting signatures to encourage voting, Ribelles recognizes that now the next move may be to go directly to court, although assures which is a path “that we would never have wanted to reach”. Is it a unique case? Not quite. What the group demands is that women not have to limit themselves to mending their clothes, cleaning the hermitage or raising funds. They want to go out in procession in “the usual brotherhood, the one they have always had.” It is not the only place in Spain where the debate has arisen. A year ago the Constitutional gave the reason to a woman from La Laguna (Tenerife) who reported a similar situation. The case has been resorted at the European level, however, which explains why yesterday it was not decisive in the Sagunto vote. Images | Sagunto Tourism and Valencian Community In Xataka | Holy Week has been a huge marketing campaign for decades. Now it even has board games

A Xiaomi SU7 has humiliated an entire Ferrari SF90 in an acceleration race. And that means absolutely nothing

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If in recent days you have wandered through social networks (and something tells me that is very likely) perhaps you have seen a video in which a Xiaomi SU7 Ultra makes a fool of an entire Ferrari SF90 XX Stradale in an acceleration race. “A Ferrari worth a million euros losing against a phone manufacturer” reads the tweet from accounts like that of @kinglinzhui who regularly posts information or videos proselytizing Chinese technology and culture. The tweet, in fact, has also been replicated by high-ranking figures in the State, as the Chinese ambassador to Colombia. In the video you can actually see how The Chinese car passes over the Ferrari. He Xiaomi SU7 Ultra It is the most advanced electric car from the Chinese manufacturer. It has 1,548 HP of power available and is limited to 350 km/h. He Ferrari SF90 XX Stradale It is also the most radical version of one of the most advanced sports cars that Ferrari has launched in recent years. In this case it is a plug-in hybrid with 1,030 HP of power with a V8 engine that generates up to 797 HP of power and is supported by three other electric motors to give the best of itself. Although there are some details to understand why the Xiaomi SU7 Ultra is faster, both Twitter accounts have focused on the inevitable: the most emblematic Western firm that puts a million-euro car on the market. (actually it is a limited edition of 790 units sold starting at 770,000 euros) is crushed by an electric supercar from a company that has just been born in the automobile market and that opened reserves for just over 100,000 euros at direct exchange. The problem is that it doesn’t mean much. Or, directly, it doesn’t mean anything. Click on the image to go to the original tweet The problem is the aura How important is technique in the debate? Everything and nothing really. And the first thing to keep in mind is that the comparison does not hold up. An electric car with more than 1,500 HP of power will always be faster in a straight line race than a car with a combustion engine. All its difficulty (and it is not a little, mind you) lies in being able to lower the power to the ground in the most effective way and launch the car forward as quickly as possible. In this case, it doesn’t matter if we are comparing a Ferrari with a Xiaomi or any other high-performance electric car. It is also not the first time we have seen comparisons of this type. And it is that carwow has already demonstrated the potential of the electric car facing a Kia EV6 GT against a Ferrari Purosangue. The power and sound of the naturally aspirated V12 against a general electric sports car. The result was the same again, with the Ferrari crushed. In the case of the Xiaomi SU7 Ultra and the Ferrari SF90 XX Stradale things change a little because those from Maranello have in this case an electrified car on their hands. All in all, although it certifies 0 to 100 km/h in just over two seconds, it is not enough to defeat the Chinese electric car. The problem for Xiaomi is that it sweeps the purely technical section but there is something it cannot offer right now compared to one of Ferrari’s most advanced cars in recent years: aura. When you spend more than 770,000 euros on a Ferrari (as if you were spending a million euros) it is not because you want to buy the fastest car. Or, at least, not only for that. First, you have to understand that the Ferrari SF90 XX Stradale is a circuit car, designed to perform at its best when linking curves. Something in which, of course, Also the Xiaomi SU7 Ultra has proven to be among the best. The case of this Ferrari is special because the “Program XX” It is designed to sell to a very specific group of customers a car that is not approved for the street, that can only be driven on a track. In fact, Ferrari takes the car wherever you want and maintains it when you have it stopped. It is a service typical of a pilot. However, this time, Ferrari has made the necessary adjustments to be able to drive it wherever the client wants. That exclusivity, that treatment of the customer is what a Ferrari SF90 XX Stradale customer buys when they get one of these limited units. The customer of this type of car is not concerned that a Xiaomi SU7 Ultra is faster in a straight line. I would dare say that few even care that it is faster on a track. Building a car brand from scratch has this problem. And it is even more complicated when it comes to an electric car. Chinese brands face a major obstacle. In many cases they are technically better than Westerners but they lack history. My colleague Javier Lacort explains it well in the podcast Infinite Loop. It is no coincidence that Xiaomi partners with Leica on its mobile phones. Nor that TCL has done the same with Sony for its televisions. Building a brand from scratch and having specific recognition as a firm that makes premium products worldwide is very complicated. The Volkswagen Group needed shovelfuls of marketing money for more than two decades to ensure that Audi was perceived as a German premium at the level of Mercedes or BMW. And the higher you aim, the more difficult it is to achieve that recognition. But Xiaomi also has another challenge: creating a story around its electric devices. When we tested the Porsche Macan We said that the car was great, a sporty electric SUV for traveling at extraordinary speed. And yet, it lacks soul. Because that same car previously had a V6 engine that generated sensations that were impossible to replicate by an electric car. It … Read more

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