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Universal quantum computers promise to change the world. Now they are closer thanks to giant super atoms

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The prototypes of quantum computers currently manufactured by IBM, Honeywell or Google, among other companies, are engineering prodigies. However, they have defectswhich currently greatly limits the range of applications in which it is possible to use them. The most important of all of them is that they make mistakes and they are still not able to correct them effectively. Scientists are working on developing advanced error correction systems, and if they achieve their goal, universal quantum computers capable of dealing with a wide range of problems will arrive. The Achilles heel of current quantum machines is the extreme fragility of their qubits. And they are very sensitive to disturbances from the environment. Their interaction with the space around them can cause quantum information to be lost or altered, preventing them from delivering a correct result. This phenomenon is known as quantum decoherence and it has the ability to degrade the quantum states that need to be protected in order to carry out operations with qubits. Currently, researchers are making an enormous effort to design effective strategies for isolating qubits from the environment. However, efforts are also being made to develop less fragile qubits, and therefore less sensitive to noise. This is the plan that several scientists at Chalmers University of Technology in Sweden are working on. And they have developed a completely new quantum system designed to protect quantum information and minimize interference from the environment. Its purpose is, neither more nor less, to pave the way for universal quantum computers or large scale. Less decoherence leads to more robust and higher quality quantum computers Quantum computing experts maintain that quantum computers that will have the ability to correct their own errors can be used to design exotic materials, and probably also to develop new drugs and in industrial optimization problems, among other tasks. These are some of the applications that the qubits implemented with giant superatoms proposed by the Chalmers University of Technology team led by applied quantum physics professor Anton Frisk Kockum could put in our hands. Giant Superatoms explore two ideas long known to quantum physicists: giant atoms and superatoms. Giant Super Atoms explores two ideas long known to quantum physicists: giant atoms and superatoms. Unlike isolated atoms, a giant atom in this context is an artificial qubit designed to interact with its environment using light or sound waves at multiple physically separated points. This peculiarity allows them to protect quantum states more effectively than conventional systems, reduce decoherence and remember past interactions. The problem with using giant atoms in quantum computers is that they have significant limitations when trying to entangle them. Entanglement is essential in quantum computing because it allows multiple qubits to share a single quantum state and act as a coordinated system. To solve this limitation, the Chalmers researchers have combined giant atoms and superatoms. A superatom is made up of several natural atoms that share the same quantum state and behave collectively as a single larger atom. Lei Du, one of Chalmers’ researchers, explains to us what is a giant super atom: “We can observe it as multiple giant atoms working together as a single entity, allowing them to exhibit a non-local interaction between light and matter. This allows quantum information from multiple qubits stored and controlled as a unit and without the need for increasingly complex surrounding circuits.” For the moment, giant superatoms are a theoretical proposal, but Professor Anton Frisk Kockum and his team are going to try to build a quantum system using them. If they succeed, they could have found a new type of qubit that is much more robust, and, therefore, suitable for use in the development of universal quantum computers. Image | Generated by Xataka with Gemini More information | ScienceDaily In Xataka | We already know what the chips that will arrive until 2039 will be like. The machine that will allow them to be manufactured is close

The Earth was going to force us to “erase” a second from our clocks in 2026. Climate change has changed everything

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For decades, the world’s metrologists have had to occasionally add a “leap second” to our clocks on Earth, since traditionally the tendency was for our planet to begin to slow down due to tidal friction caused by the Moon, making our days last a breath longer than the theoretical 86,400 seconds that science has always told us. but this trend has changedand now the Earth has started spinning faster. The consequence. Yes, when our planet was starting to slow down, I had to add one more second to our daily lives; When the opposite effect occurs, what should be done is to delete a second so that Coordinated Universal Time (UTC) does not become desynchronized from astronomical time. Something that will not be noticed, logically, but that has great importance in the causes that have led to this situation. Because? The answer to this temporal enigma was published in Nature where science calculated that the massive melting of ice in Greenland and Antarctica has postponed the need for a second negative from 2026 to 2029, due to what is known as the ‘skater effect’ since an ice skater who turns on himself and wants to brake, extends his arms; If you want to speed up, you shrink them against your body. Now, if we take this concept to our own planet, we can see that when the ice at the poles melts, the entire mass of water flows and is redistributed around the equator as if it were ‘opening its arms’, moving mass away from its central axis of rotation. In this way, the law of conservation of angular momentum tells us that this phenomenon causes a slowdown in movement. Then we can affirm that the thaw has counteracted and surpassed the acceleration of the Earth’s core that we had previously detected. Your confirmation. What in 2024 was protection, today is backed by real-time mediations, and this means that if we go to the official data From the IERS, its most recent bulletins show us that the length of the day shows new positive values, so the acceleration has stopped and the Earth slows down slightly again. If we look at the literature, this fits perfectly with research published in recent years, where it is seen that between 2000 and 2020 the days have lengthened at a rate of 1.33 milliseconds per century due to melting ice. And among the reasons they give, the authors are categorical in stating that the redistribution of masses due to climate change currently dominates the Earth’s rotation, even surpassing the historical effect of lunar friction. It’s a race. Adding or subtracting seconds from our watches is not forever, since the International Bureau of Weights and Measures has already made the decision to definitively eliminate this practice starting in 2025. The reason? Current digital infrastructure, such as telecommunications networks, is at risk of collapsing every time time is manipulated. Images | POT In Xataka | A third of Spain will be completely dark for a minute or two: the astronomical event of the century is approaching

Fish has been in a deep crisis in Spain for years. Mercadona believes it has the formula for that to change

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He video It is from October 2024, but it could have easily been recorded yesterday, today or even tomorrow. In a piece lasting just under a minute, Jana Quiles, tiktokerrecounts his disastrous time at a fishmonger: “I just wanted a piece of fish for dinner and, because I didn’t know what to order, I ended up buying 25 euros worth of hake.” Your case is interesting because it connects with a phenomenon shared by many other young people on networks and that is reflected in the statistics from the Government: Spanish households buy less and less fish. Mercadona has taken note and has decided to step on the accelerator in a bet that it’s been a while implementing: the move from the fishmonger to the trays. What has happened? That Mercadona wants a “new fish sales model” in its stores. The chain itself announced it in a statement posted on its website, a note that, beyond its corporate tone, stands out for two things. The first, the message. The company advances its intention to complete the transformation of its sections, betting 100% on the packaged product. “We transfer all products to trays, guaranteeing quality and freshness.” The second thing that draws attention is the images. Mercadona’s statement only shows photos of fish already packaged, labeled and arranged in open refrigerators. Not a counter. Not even a stand with fresh goods and fishmongers to consult about the goods or a special cut. Nothing, in short, that can lead to experiences like the one that Jana Quiles lived in her day. @janaquiles This happens to me as a beginner 😂🐟 ♬ original sound – Jana Quiles Is it something new? In a way. Although Mercadona seems determined to complete its “reengineering” of fish, in reality the change comes from behind. Does more than a year There was already talk of the chain’s desire to find a more efficient model for the section, betting on the consumption of clean merchandise arranged on trays. The idea, how it progressed TOB.C. in January 2025: greater offer in packaging, with items ready for consumption, and much less assisted sales, moving away from the model that prevails in traditional markets. From the traditional image of customers browsing the hake, turbot and mussels displayed on ice, with the fishmonger on the other side of the counter, we move to a more functional one in which there is only the customer and the tray. Why this change? Mercadona argues who wants to “adapt” to how we consume in our homes and defends the benefits of the new model: “The key is to reduce as much as possible the time that passes from when the fish comes out of the water until you consume it.” To older claims that the trays allow it to reduce waiting times in stores, offer an “assortment adapted to real consumption” and work with merchandise “clean and ready for consumption.” In short, selling merchandise made almost to measure for a clientele that has lost the habit of buying fish and no longer has the vocabulary and the keys to ordering fresh goods. Again the case by Jana Quiles is paradigmatic. His experience with hake is not something isolated, it connects with an entire generation that has not acquired the habit of going to traditional fishmongers. That’s all? No. To these advantages are added others that Mercadona does not cite and directly affect its production costs, logistics and even the management of spaces in the store. In January the company already made it clear In any case, the change in model would not imply dispensing with employees, they would simply be assigned new roles. “The entire fishmonger’s team continues to be part of Mercadona. Their work adapts to other needs in the store.” Does it only affect fish? No. The focus may now be on fish, but it is only part of a much larger Mercadona strategy that connects with two of its main bets. One is food ready for consumption. For years, the chain has aspired to be more than just the place where you buy products to fill your refrigerator and pantry; It seeks to be directly the space in which you feed yourself. The clearest reflection of this slogan is the section “Ready to eat”but the commitment to trays of fish that are clean, cut, filleted and practically ready to put in the oven goes in that same direction. And the other bet? The ‘Store 9’the new local format that the Valencian chain wants to bet on. Your goal is optimize processes and improve efficiency, but in practice that translates into moving even further away from traditional counters and moving towards already packaged merchandise. Interaction with staff during purchases is reduced to a minimum. No chats with butchers, fishmongers or fruit sellers, like in traditional supermarkets. Speed, efficiency, and functionality prevail, which in turn leads to handling and packaging tasks being removed from public areas. Is this just about Mercadona? Not at all. Roig’s chain has managed to gain a considerable market share in Spain, close to 30% in terms of value, so their decisions affect thousands and thousands of families. However, the changes in fish consumption go further and partly connect with the Quiles video that we mentioned at the beginning of the article. We Spaniards buy less and less fish. The official data of the Government show that per capita consumption of fish (both fresh and frozen) in homes has been plummeting for years. And it doesn’t get better. He latest reportfrom November, shows interannual falls of between 4 and 5.5%. With its latest movements, Mercadona seeks to position itself in the part of the business that performs best. While Fedepesca talks about the closure of thousands of fishmongers Since 2007, there are businesses in the sector more focused on the sale of ready-to-buy merchandise, online orders and home delivery that they keep growing. Fish consumption itself is leaving homes to focus at leisure. Now Mercadona aspires to carve out … Read more

We have a surprising new “secret weapon” against climate change: beavers

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When we think about ways to capture carbon from the atmosphere, we often imagine huge, expensive technology installations; However, nature has its own systems to be able to clean the environment. One of these systems, as a new study has shown, is that beavers are true carbon sequestration machines thanks to the dams and canal systems that these rodents build. A Swiss experiment. Until now, we knew that humid ecosystems were important, but precise data was lacking to understand why. Now we know that the key was precisely in these animals, as a study has shown published in Nature. Here the researchers analyzed in detail an 800-meter stretch of a stream in northern Switzerland that had been modified by a beaver colony. What they saw was that the river corridor, after transforming it, acted as a net sink that could retain around 100 tons of carbon per year. In perspective. These figures are equivalent to trapping 26% of all the carbon inputs that enter that system, so over 13 years the wetland created by the beavers has reached store a whopping 1,194 tons of carbon. In short, this means that the area stores up to 10 times more carbon than similar river stretches where these rodents do not live, with a sequestration rate of approximately 10.1 tons of carbon dioxide equivalent per hectare per year. How they do it. One might think that carbon is stored in accumulated wood or swamp plants, but the reality is much more complex. The study attributes that more than half of the carbon that has been removed from the environment is trapped below the surface, in the subsoil of the wetland. Added to this is the burial of organic carbon in the form of particles in the sediments. By flooding the area and slowing the flow, the beavers created the perfect conditions for carbon to settle and be locked underground for the long term. The methane problem. When we talk about creating new wetlands, any climate expert might raise an eyebrow, since these areas of stagnant water are known to be large emitters of methane, which is one of the gases involved in the greenhouse effect. On top of that, much more powerful than CO₂. However, the authors of the study also measured this factor and were pleasantly surprised: methane emissions in this system were surprisingly low, representing less than 1% of the total balance. But in addition, the carbon dioxide emissions that came from the sediments were also much lower than the carbon that the system managed to sequester. In this way, it can be concluded that the beaver wetland is a sink, not a source of emissions. Meeting objectives. The data collected in this Swiss stream opens an exciting door for climate migration policies, as encouraging the return of beavers can dramatically increase the resilience of our riverbanks. In fact, calculations suggest that the recolonization of floodplains by beavers could offset between 1.2% and 1.8% of Switzerland’s annual carbon emissions. Images | Francesco Ungaro In Xataka | Franco introduced an exotic sheep to Teide to please the hunters. Now it is destroying its ecosystem

OpenAI seemed unstoppable. Now he has decided to leave Sora behind and change course

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There was a time when OpenAI seemed to move forward without looking back, adding release after release while the rest of the industry tried to keep up. On that stage it appeared sorapresented in February 2024 as a model capable of generating video from text and, shortly after, as an application with broader aspirations. The idea was not only to create clips, but also to give them a place to circulate, share them and turn them into a more social experience. It was, in a way, the natural extension of a company that never stopped exploring new formats. The closure. What fit as one more step within that expansion has ended in a twist that is difficult to ignore. OpenAI has confirmed the end of the Sora app, a decision that the team itself has communicated with a direct message to those who used it: “We say goodbye to the Sora app.” According to The Wall Street Journalthe withdrawal would not be limited to the app: it would also affect the API and video support within ChatGPT. For now there are no specific dates or complete technical details, although the company has announced that it will offer more information shortly. What was Sora and why did it matter?. To understand what this closure means, it is worth clarifying what Sora was. It was a system capable of generating videos from text and expanding existing clips. Over time, that capability became a broader product, with functions for sharing content generated within the platform itself. It was not just another tool, but one of the proposals with which OpenAI sought to bring AI to the field of audiovisual creation. The change of prioritys. Less video, more code and agents. The closure of Sora is not an isolated move, but part of a broader change within OpenAI. According to the aforementioned newspaper, the company is reorienting computing capacity and part of its equipment towards productivity tools, programming and systems capable of acting autonomously on the user’s computer. In that same line, The company recently announced the integration of its ChatGPT app, its Codex code tool and its browser into a kind of “super app.”. The idea, as conveyed by management to employees, is to concentrate efforts on a clearer product vision. During his journey, Sora symbolized a stage in which OpenAI was exploring how far it could take its models beyond text. Its closure, however, points to a different reading of the current moment. The company seems to be leaving this stage of expansion behind to focus on products with more immediate applications in the professional field. It is not so much a resignation as a rearrangement of priorities. In that setting, video loses weight compared to tools that fit better into your current strategy. Images | OpenAI In Xataka | Terence Tao is the best mathematician in the world: he has recognized that he is using AI to solve one of the Millennium Problems

Iceland, Norway and Switzerland have been boasting independence from the EU for decades. Global chaos is about to change everything

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The war between the United States, Israel and Iran is shaking the foundations of the historic independence of the nations that make up the European Free Trade Association (EFTA or EFTA). Faced with an increasingly volatile geopolitical panorama, Iceland, Norway and Switzerland find themselves at a crossroads and look, each at their own pace, towards the European Union in search of refuge. The question that now haunts European parliaments is no longer just political, but purely industrial: are they willing to sacrifice parts of their sovereignty in exchange for the protection and stability that Brussels offers? As explained to the newspaper Five Days Sophie Altermatt, economist at Julius Baer, ​​these countries face external pressures from increasingly interventionist superpowers. The United States has become a much less predictable ally on trade and security, while China’s growing ambitions endanger European industrial competitiveness and create vulnerabilities in supply chains. The rhetoric of US President Donald Trump, who has even suggested his intention to annex Greenland, has acted as a powerful catalyst for this change in mentality. As the magazine warns The Spectatorquoting a maxim from Mark Carney: “If you’re not at the table, you’re on the menu.” The return of hard power politics is forcing middle powers to reevaluate their place in the world. From the European side, the door is open. As detailed by the Icelandic public broadcaster RÚVEU Enlargement Commissioner Marta Kos has stressed that the current geopolitical context is fundamentally different from the past and that EU membership offers “an anchor in a bloc based on values, prosperity and security.” Are we facing a real approach? Moving towards greater integration implies sitting at the table where decisions are made, but also assuming a clash of sovereignties. Ine Marie Eriksen Søreide, leader of the Norwegian Conservative Party, acknowledged in a parliamentary debate collected by Five Days that remaining outside the Union generates enormous vulnerabilities, since their country remains “on the margins of everything we want to enter into.” However, the price of admission is high. Political analyst Thomas Vermes explains in the Norwegian middle ABC Nyheter that the EU is transforming towards a federation where supranational organizations assume more and more authority. Entering means submitting to decisions by qualified majority – where large countries have more demographic weight – and growing pressure to eliminate the right to veto on key issues. In addition, it would imply assuming joint economic burdens, such as the common debt of 90 billion euros contracted to help Ukraine. In fact, the possible entry of Ukraine would radically transform the bloc’s economy. According to the same Norwegian mediathe incorporation of the 41 million hectares of Ukrainian agricultural land would flood the markets and force rural aid to be restructured. Three countries, three different rhythms The answer to this dilemma varies drastically depending on the resources each nation brings to the table. Iceland: The direct path and the referendum in sight The Icelandic government has stepped on the accelerator and passed a resolution to hold a referendum on August 29, 2026 on resuming EU membership, a measure supported by 57% of the population. Iceland would provide the EU with a vital logistics position in the emerging Arctic trade routes and strategic supply: already is the fourth largest supplier of aluminum of the block, material that accounts for more than half of its exports to Europe. Nevertheless, as reported RÚVthe Minister of Foreign Affairs, Þorgerður Katrín Gunnarsdóttir, has drawn a non-negotiable red line: she will not sign any agreement that involves ceding control over the island’s precious natural resources to the EU. Norway: The fractured debate Although the country rejected joining the EU in 1972 and 1994, the debate has been resurrected. According to The Spectatorthe conservative party (Høyre), now led by the determinedly pro-European Ine Eriksen Søreide, is “clearly a yes party.” Polls show an increase in support for accession, rising from 27% in 2023 to 41% in 2025. However, the current Labor government of Prime Minister Jonas Gahr Støre is strongly opposed. Despite not being a member, Norway is Europe’s absolute energy guarantor after the invasion of Ukraine: it supplies 51.8% of the pipeline gas and 14.6% of the crude oil consumed by the EU. Precisely for this, the internal opposition is fierce. Columnist Hans Christian Hansen warns in the financial journal Finansavisen that the EU is losing technological ground to the US and Asia. According to Hansen, while the US uses energy to attract industry, the EU uses it to “self-regulate with increasing rigor” and promote projects of uncertain profitability such as offshore wind. The question he asks his compatriots is brutal: “Do we want to link our energy policy, our industry and our future to a team that is already losing?” Switzerland: The pragmatic path and bilateral agreements Unlike the Nordics, Switzerland does not contemplate full accession so as not to compromise its historical neutrality, but it is making progress in its economic and technological integration. President Ursula von der Leyen and Swiss President Guy Parmelin They signed the “Bilateral III” package. This framework modernizes agreements on transport and free movement, and adds crucial pacts on health, food security and Swiss participation in the European space agency and the Horizon Europe and Erasmus+ programmes. In addition, it will allow it to fully enter the internal electricity market in the EU. The objective of the Federal Council is “stabilize and future-proof the proven bilateral track“. The Federal Council approved the sending of this package to the Parliamentor, proposing to subject it to an optional referendum to guarantee its democratic legitimacy on sensitive issues such as salary protection. Switzerland’s weight is undeniable: in 2023, bilateral trade in services reached €245 billion, representing almost 9% of the EU’s total services trade. Forecasts in sight? The geopolitical board will continue to move. If Iceland eventually joins the EU, the pressure on Norway will be immense. As conservative leader Søreide arguesNorway would be in a “completely different situation” if its EFTA partner makes the leap. For its part, Switzerland … Read more

The number one enemy of the Spanish mountain is called climate change. And we have data to prove it.

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In 2024, they burned 47,700 hectares. In 2025, 340,000 were exceeded. And honestly, the reasons are manyalmost too many. Well, Marco Turco, from the University of Murcia, just demonstrated something that we already sensed: at a global level, the days of extreme fire risk They have increased 65% since 1980. That’s 12 more days a year. And, if that were not enough, the Mediterranean region is where lthe signs are clearer. What does all this mean? In general terms, this means that although the causes of the fires remain human (in Spain between 80 and 95% of firesin fact; the intentional ones there are many less), climate change has a lot to do with its spread. Increasingly. Why is it interesting? Because this study is the first to apply formal climate fingerprinting techniques on a global scale to fire risk. That is, that figure of 11.66 more days of extreme risk in 44 years is achieved with the most advanced methodology that we have at our disposal. And if the global data is bad, the Mediterranean data (where the days have doubled in these almost five decades) they are horrifying. But it’s not all bad news. After all, as Turco points outdespite the increase in risk, the burned area has not increased proportionally. And the reason, according to him, is the improvement of the means of extinction. However, “when extreme conditions coincide with ignition, the resulting fires are more virulent and extensive.” Why is it news now? Besides because the article has just been published in Science Advances, because the precedent of 2025 (a rainy spring and a terrible summer) It resonates a lot with what we have in 2026. We don’t even have to remember that we are talking about a handful of months with truly incredible accumulated rainfall and that is generating an amount of material in the field that can easily be end up turning Spain black. Because the core of Turco’s work is that the conditions that allow fire to spread and become a big fire They are stronger than ever. Furthermore, human exposure to these types of fires is increasing: according to recent work in Cataloniabetween 42 and 138% for each area burned since 1992. The great debate of the future. As we have repeated on several occasions, there is no debate about the effect of climate change on increasing the risk of fire. The work is summarized in how much, how and where. Therefore, the central debate is another: what. What we do with the cards that nature is dealing us. And the truth is that there is a lot to cut: whether to bet on extinction or preventionif investing more in the landscape management or begin to integrate the entire territory into urban planning schemes more ambitious and extensive. Etc, etc, etc. The debate is endless and we are always late. Because what is clear thanks to Turco is that the distance that separates the spark from the megafire is increasingly shorter. Image | Mikhail Serdyukov In Xataka | In Ourense there are towns that fear running out of water in the middle of the rainy season. The reason: the hangover from forest fires

Humanity has been wondering for years how to adapt to climate change. The Mayans already achieved it centuries ago

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Beyond its architecture, urban planning and art, there is an aspect of the Mayan civilization that fascinates archaeologists: its decline. Over time, historians have understood that the decline was not sudden nor did it respond to a single factor, rather there was a sum that included changes in trade routes, wars and, above all, adverse weather, with droughts. severe and prolonged. Now we know something more. Even during the stages of Classic Terminal (800-1000 AD) and Postclassic (1000-1500 AD), while large urban centers succumbed, there were settlements that adapted to climate changes. What has happened? Which a group of archaeologists has just published an article in which they capture their years of research in a Mayan settlement located in ‘Birds of Paradise’, some wetlands located in the north of Belize. The site itself is not new. Scientists identified it long ago a few years with the help of lidara tool that is revolutionizing archaeology. What is new are the conclusions that its analysis has left. He study is published in the magazine PNAS (Proceedings of the National Academy of Science) and, among other issues, concludes that the wetland offers valuable information about how the Mayans responded to the social and environmental changes they dealt with during two crucial stages of their history: the Classic Terminal and Postclassic, a period that goes from the 9th to the 16th centuries. What have they found out? As they explain from New York University (NYU), to which the main author of the study belongs, one of the most interesting readings that the site leaves is the extent to which the Mayans adapted to the vagaries of the climate. Basically, researchers have proven that at a time when large urban centers were abandoned, pressured in part by intense droughtsthere were Mayan settlements that managed to survive in the wetlands. As? For its ability to adapt to the environment. And how did they do it? Taking advantage of the means they had at hand. “Wetlands provided resources for hunting and fishing to ancient populations, in addition to serving as refuge in periods of drought and social upheavals,” they explain from NYU. The environment supplied them with something else, equally or even more valuable for their settlements: construction materials. The site in question that they have analyzed in Belize in fact includes eight mounds of earth that could have served as a base for building buildings and a large elevated limestone platform. The experts also rescued wooden posts, animal remains and ceramic artifacts, clues that tell us about how life continued while other nearby urban centers declined. What do the experts say? “Together these findings reveal a highly adaptable community with diverse tools, food and construction materials. It shows us that Mayan communities could change habitats and survive extreme climates,” explains Timothy Beachprofessor at the University of Texas at Austin, who nevertheless recognizes that “we still do not know the size of this wetland population and its functioning.” Now archaeologists aim to go one step further. “Our next moves include expanding the excavations to understand how the Mayans built with unconventional wood, how they ate, and how this settlement fit into a region that was suffering from widespread abandonment.” Why is it important? Because of the historical era we are talking about. In their article, the researchers assure that the Belize site demonstrates the ability of the ancient Mayans to adapt to “the profound challenges” that they had to live through from the 9th century AD. For reference, a team led by the University of Cambridge discovered not long ago that between 871 and 1021 they happened eight persistent droughtsof at least three years, in the Yucatán Peninsula. The worst of all actually lasted more than a decade. The scientists arrived at that conclusion after analyzing a stalagmite from a Yucatan cave. And, beyond how spectacular it may be, the data is interesting because it tells us about the challenges that the Mayans faced during the Terminal Classic (800-1000 AD), when the limestone cities of the south they were abandonedthe dynasties declined and civilization moved north, losing part of its political and economic power in the area. Are there more conclusions? “As the large urban centers of the Mayan regions succumbed to interconnected socio-environmental factors, the communities of the Birds of Paradise complex persisted through that transition by constructing a series of elevated structures of earth, stone and wood with direct access to the abundant resources and connectivity offered by the riparian wetland system,” reads the article published in PNAS. “It provides evidence for persistent populations between the Elevated Interior Region and coastal regions during the Terminal Classic to Postclassic. While nearby highland urban centers were abandoned, this population continued to emphasize wetland agriculture and provides our best evidence for other subsistence strategies, such as fishing and gathering other proteins, reflected in the faunal assemblage,” they add the researchers. What did they dig? That is another of the surprises that the study leaves behind. Archaeologists discovered what NYU describes as “the largest collection of architectural wood” located inland, as well as artifacts that help historians understand everyday life in the wetlands. It may seem like a minor issue, but it is not common to find remains of wood in Mayan sites. On the contrary. Their very nature causes them to degrade in tropical environments. In Belize, experts have discovered “a unique opportunity” which allows them to better understand how the ancient Mayans built, what types of wood they used and how they used each one. Is it so uncommon? The majority of preserved Mayan wooden remains are figurines, spears and boxes that were recovered mainly in caves in Belize at the beginning of the 20th century. Remains have also been found in mountainous and saline areas in the south of the country. The new findings go further. “It challenges long-held beliefs that sites like this could not survive in the American tropics and suggests we might be overlooking similar sites,” admits Lara Sánchez-Morales, professor of anthropology … Read more

create subfolders, reorganize, change name or format

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Let’s tell you how to sort the files in your folders with AIusing Claude Cowork. This is one of the options Claudewhich is like a AI agent capable of controlling elements of your computer and doing things for you autonomously, although asking for permissions at each step. In this case, what we are going to ask of this function of the artificial intelligence is that you create two subfolders and put photos and screenshots in them, distinguishing what each one is and changing the format. It is an example of what you can do, because you can also ask it to move and manage files of any format. Something you should know is that, for safety, Claude will not delete the original files unless you ask for it. In other words, we are left with two folders with copies of the originals. It will do all this without you having to touch anything, just by asking. Additionally, for security we can make it only touch elements in a specific folder. Another thing you should remember is that Claude Cowork It is a payment option. You will need to have a subscription to one of the Pro versions of Claude to use it. To use it, you will also have to have the Claude desktop application downloaded, because it is the one that manages everything. Manage files and folders with Cowork The first thing you have to do is open the Claude application on your computer. In it, click on the tab cowork that you have at the top. Once in it, first click on Work in a folder to choose a desktop folder where you want to work. With this, you can choose the precise place on your computer where you want Claude to do things, and you prevent the AI ​​from touching files in other folders that you don’t want it to manage. You can choose folders or subfolders, be it the downloads folder, the desktop folder, or any other folder on your hard drive. When you choose one, Claude will ask you for permission to modify the files what’s in it. Here, you can allow it occasionally, only for this task, or do it always if you are going to do many tasks in the same folder. But the safest way to avoid accidents with files is to give it permission only when you are going to do a new action. Once the folder has been chosen, it is time to write the prompt. With it, you will have to ask Claude to make any changes you want. Here, remember that you have to explain everything in detail so that the AI ​​can understand it better. For example, I have written the following: “I want you to sort the images in this folder into two subfolders. One should be called “Photos” and you should save regular photos in it. The other is called “Shots,” and I want you to save screenshots in them. You have to convert all screenshots to jpeg format. You must rename all the images in the two subfolders, using as the name the date and time the images were taken.” Obviously, you can create your own customized prompt to the files you want to manage and what you want to do with them. My prompt is just an example to perform several different tasks so you know it can be done. When you launch the prompt, possibly your operating system will ask you for permission again to allow Claude to make changes to your folder, even if the AI ​​had already asked you to do so before. Now, Claude will take a few minutes to analyze what you have asked of him and do it. In fact, you can start doing other things on the computer and leave it working for you in the background, although if you go to the Claude application you will be able to see all the steps it takes in the process. That’s it. When you finish, you will have everything managed as you asked. In my case, the photos are renamed, formatted, and arranged in the two subfolders I asked Claude to create. He has kept the originals so that I can delete them by hand, a security measure to avoid unintentional deletions of elements on your computer. In Xataka Basics | Claude: 23 functions and some tricks to get the most out of this artificial intelligence

the four things that change in the 2026 declaration

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We are going to tell you the main ones news about the 2025 income tax returnwhich is what we will do during 2026. Despite being done this year, it is the 2025 Income because it is the one in which we will catch up with the last fiscal year. The statement, according to Income calendar 2025you will begin to be able to do it on April 8. Like every year, the Treasury has introduced some new features that seek to optimize the declaration or take into account things that were not taken into account before. Therefore, it is important to know them to know if they affect you. Income News 2025 Below we leave you a list with the four new features that you will find in this Income tax return that we are going to carry out in 2026. They are the following: New deduction for low-income workers: Taxpayers who receive income from work less than 18,276 euros per year and do not have other income greater than 6,500 euros may apply a new deduction of up to 340 euros. 340 euros is the maximum for those who receive the Minimum Interprofessional Wage, and it gradually decreases until it disappears at the upper limit of income. Tax incentives for sustainability: Deductions are maintained for the purchase of electric vehicles, installation of charging points and energy efficiency improvements in homes. Thus, if you invest in sustainable solutions, your tax burden will be reduced. Higher taxation for higher savings income: Those who have more, must pay more. Capital income (dividends, interest, capital gains) that exceeds 300,000 euros will be taxed at the maximum rate of 30%. Between 200,000 and 300,000 euros at 27%, between 50,000 and 200,000 euros at 23%, between 6,000 and 50,000 euros at 21%, and those up to 6,000 euros only 19%. Changes in personal income tax brackets and regional particularities: At the state level, the last section of the savings base has been raised from 14% to 15%, and adjustments are contemplated for taxpayers residing abroad. In addition, some autonomous communities may introduce additional modifications that affect the final fee. Of course, the structure of sections of the general tax base is maintained, these small changes have simply been introduced. In Xataka Basics | IRPF withholding calculator 2025: how to use it online to know your minimum withholding recommended by the Treasury

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