discovered

Some astronomers made a paella at 2,000 meters above sea level in Almería. And they discovered the best cooking point for rice

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If you like cook a paellait is best that you do it on the coast. And not only because of how pleasant the impression of having a rice at the beach bar looking at the sea is. Also because, basically, it will cook better. Astronomers know this well. Calar Alto Observatoryin Almería, who have a curious anecdote with this story. It wasn’t the chef’s fault.. Years ago, the astronomers at the Calar Alto Observatory enjoyed the dishes prepared by a magnificent chef, from a small town in the province of Almería, during their work days. In his municipality he was known precisely for the quality of his rice. However, I had a thorn in my side with the paellas I was trying to prepare at the observatory. Rice never suited him. At least, not as tasty as normally. In Xataka We have spoken about it with Ana Guijarro, one of the astronomers at this observatory. One day she explained to him that he should not martyr himself. The fault was not his, but rather the fact that the facilities They are 2,168 meters above sea level. The physics behind. As we rise meters above sea level, the atmospheric pressure is lower. To understand it, we can visualize it: there is less column of air above our heads, therefore there is also less pressure acting on them. The boiling point of liquids depends on the pressure. If we heat waterthe molecules that make it up will move faster and faster, colliding with each other. When they reach the surface, they may attempt to “escape,” turning into vapor. However, atmospheric pressure pushes them down and prevents this from happening. If the atmospheric pressure decreases, so does the boiling point. That is, the temperature at which the liquid can begin to turn into vapor. At sea level, the boiling temperature of water is 100ºC. However, at 2,168 meters, water boils at approximately 92.6ºC. A cooking class. For rice to cook properly, it is necessary for the starch in its grains to hydrate and gelatinize correctly, and for that to happen, sufficient heat is needed. The problem is that, when a liquid boils, all its energy is invested precisely in that change of state instead of continuing to raise the temperature. The 100ºC at sea level, or 92ºC at higher altitudes, remain stable so that the liquid turns into a gas. Therefore, there is not enough temperature to process the rice grains in the best possible way. And what about Andean rice? In the Andean countries there are many rice-based dishes that are very tasty. The height is even higher than that of the Calar Alto Observatory, but in these places, where they have no choice but to cook at high altitudes, They have a very precious trick: the pressure cooker. Precisely the objective of this utensil is to artificially increase the pressure, so that the boiling point rises and the food can be cooked for longer. It is valid for rice and all types of stews. Even at sea level it is very precious for cooking certain dishes, such as stews. Sometimes physics makes it difficult for us, but there are tricks to deal with it. It’s not just a matter of rice. Ana Guijarro tells us that this does not only happen with rice. “For example, tea or any infusion They don’t taste the same in the mountains, because the water boils at a lower temperature and that affects the extraction of the flavor that these things have.” It is something that can frustrate a chef a lot, but with which people who, like astronomers, usually work many meters above sea level, are more than familiar. Better paella on the beach. In short, the next time you have a paella on the beach, remember that it is the best place you can have it. And everything is much more enjoyable when you know the science behind it. Images | MagnificentJorgechp In Xataka | The paella Taliban have been growing strong for years. More and more evidence points to the contrary.

Geologists studied the sand on one of the D-Day beaches in Normandy. They discovered that 4% is still shrapnel

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More than 80 years have passed since “D-Day” and yet his memory is still very present on the beaches of Normandy. And not in an ethereal and symbolic way. No. Beyond memory, the landing of the allied troops in the French region in June 1944 maintains a palpable mark on its sandy shores. One that can be touched and seen, although the latter requires an electron microscope. This was confirmed years ago by a group of geologists who collected a sample of sand on Omaha Beach. When they took it to their laboratory and studied it in detail, they discovered, astonished, that 4% were actually shrapnel remains. A microscopic memory of a historical date. Walking in Normandy. That’s what the Geology professor did one day in 1988. Earle McBrideof the University of Texas at Austin, and his colleague Dane Picard, of the University of Utah. While conducting a field study in France they decided to take a break and visit the famous Omaha Beachone of the main landing points for D-Day in Normandy. They didn’t have much luck with their Norman voyage. The day they walked along the sandy beach, which is around eight kilometers long, was unpleasant, cold and windy; But that didn’t stop McBride and Picard from taking home a souvenir that honored their training: a small sample of sand. Some time later they decided to rescue the bag with those Normandy beans and observe them under the microscope. And the surprise came. What McBride found in that sample of sand collected at Omaha Beach caught his attention. In addition to remains of quartz and other materials that he already took for granted, the geologist observed tiny metal fragments. When studying them in detail with the microscope, he found that they had a rounded shape, were rough, laminated and had a dull shine, with some spots of rust. Some pieces were around a millimeter. Others did not go beyond 0.06mm. The remains of the battle. Thus, reduced to millimeter metal beads eroded by waves and the passage of time, they may have been difficult to identify, but McBride ended up reaching a fascinating conclusion. What he had before him were vestiges of the Normandy landings. “They turned out to be shrapnel from the World War II invasion. Upon closer examination, he also saw iron and glass beads that had resulted from the intense heat unleashed by the explosions in the air and sand,” detail from the University of Texas at Austin. His discovery was so curious that, together with PicardProfessor McBride decided to prepare an article and publish it in the magazine The Sedimentary Record. Foreseeable. “Of course it is not surprising that shrapnel was added to the sand on Omaha Beach at the time of the battle, but it is surprising that it has survived more than 40 years and is undoubtedly still there today,” they commented both experts. His sample was from the late 80s and the report They published it in 2011; but everything indicates that the situation remains similar today. In 2011 the experts they calculated that corrosion would still take a century to destroy the shrapnel grains. A well-measurable footprint. If McBride and Picard’s study is surprising, it is because it has done more than just confirm that—decades after D-Day—remnants of shrapnel are still scattered along the beaches of Normandy. Equally or more curiously, experts have managed to provide a fairly precise idea of ​​what that footprint in the sands represents. After examining the sample in detail, the Texas geologist confirmed that the metals make up 4% of sand. The data is illustrative, although McBride and Picard slip that there could be variations depending on where and when the sand is collected. “Due to possible plasticization of shrapnel and heavy minerals by waves and currents on the day we collected our sample, we do not know to what extent it is representative of beach sand as a whole.” Omaha was one of the major landing points on D-Day, but there were other beaches in Normandy that the Allies reached in the Operation Neptune. Today they are known as Utah, Sword, Gold and Juno. With expiration date. Although the beads discovered by American geologists are a peculiar souvenir of D-Day and have survived decades, McBride and Picard warned years ago that they will not last forever. The shrapnel remains could resist erosion for millennia, but when studying the grains, geologists discovered rust particles, leading them to be pessimistic about their future. “The waves agitate the iron fragments, which in turn removes some of the rust and exposes fresh material, more prone to oxidation, which in turn falls away, and so on,” points out the University of Texas. A century of memory. “The result is that they will become smaller and smaller and eventually storms or hurricanes will drag them off the beach,” McBride reflected in 2011. Their calculations suggested that the 4% of shrapnel identified at Omaha Beach would be reduced to insignificance in a matter of a century. They will remain to remember the Allied landing, yes, the monuments and the memory. Image | Person-with-No Name (Flickr) In Xataka | The US landed on an empty island during World War II. In nine days it had more than 300 casualties *An earlier version of this article was published in June 2024

First it was a suspicious cake. Now China has discovered that thousands of restaurants on its delivery apps… do not exist

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One of the most famous stories of the internet era it happened in 2013when American journalists discovered that a supposed restaurant called “The Shed at Dulwich” became one of the best rated of London despite the fact that, for much of its existence, it did not even serve real food. The case demonstrated how a compelling digital presence can be more powerful than an authentic physical business. The cake that uncovered the cake. It all started with something seemingly trivial. A customer from Beijing ordered a birthday cake through a delivery application and received a decorated product with inedible flowers. The claim seemed like just another incident among millions of daily orders, but the subsequent investigation ended up uncovering one of the largest food fraud schemes in Chinese digital commerce. The business he had purchased from claimed to have nearly 380 stores spread across the country. Actually, I didn’t have not a single physical store. The licenses were fake and the company existed only within the applications. What started as an isolated complaint ended up opening the door to a national review that revealed a much deeper problem: “ghost kitchens,” thousands of restaurants that seemed real to consumers. They just didn’t exist.. Food delivery drivers start their workday for Kangaroo delivery service in Beijing The operation. Apparently, the BBC told this week that the so-called “ghost kitchens” were operating by taking advantage of the control gaps of the delivery platforms. These businesses advertised themselves as conventional restaurants, often using rented licenses, falsified documentation, or non-existent addresses. When a customer placed an order, the supposed restaurant I didn’t cook anything. In many cases the order was automatically transferred to intermediary platforms that organized auctions between different suppliers. The order ended up in the hands of whoever agreed to prepare it. for the lowest price possible. The consumer believed they were buying from a specific brand when, in reality, the food could come from any unknown kitchen, without knowing who made it or under what sanitary conditions. The figures of a monster. The national investigation carried out by the Chinese authorities revealed the magnitude of the phenomenon. Inspectors identified more of 67,000 ghost restaurants distributed among the main delivery applications in the country. In addition, they discovered a chain of illegal orders that only in the cake sector had been managed around of 3.6 million orders. The authorities they concluded that delivery platforms, middlemen and numerous sellers had built a parallel supply chain based on opacity and in mass subcontracting. What seemed like a set of isolated frauds turned out to be an industrialized system that operated on a large scale and moved millions of transactions. The price war behind the fraud. They remembered in Nikkei that the origin of the problem lies in the fierce competition in the home delivery sector in China. With almost 630 million users Using these services, platforms compete to attract customers through constant discounts, aggressive promotions and an ever-increasing range of establishments. In that context, the pressure to reduce costs It ended up generating a race to the bottom. An example cited by the investigations showed how a cake sold to the customer for $35 ended up being awarded to a supplier willing to manufacture it. for just 11 dollars. Between intermediaries, commissions and platforms, much of the money disappeared before reaching the chef who actually prepared the product. The consequence was a model that rewarded volume and price above quality, traceability and food safety. The platforms, in the garlic. The investigation was not limited to the sellers. The authorities they concluded that many platforms had deliberately relaxed their controls to accelerate their growth. According to regulators, companies they did not properly verify the licenses of the establishments and allowed the presence of unauthorized sellers because a broader offer helped to attract more users. Some employees they came to recognize that applying strict controls could cause merchants to migrate to rival applications. The result was a situation in which commercial incentives ended up trumping legal and health obligations. Historical fines. Beijing’s response has been one of the most forceful seen in years within the Chinese digital economy. The authorities imposed sanctions worth 3.6 billion yuanabout 500 million dollars, to large companies such as Taobao, JD.com, Meituan, Pinduoduo, Douyin and other platforms involved. Some businesses were temporarily suspended from recruiting new vendors and forced to eliminate detected ghost restaurants. Sector analysts have described the operation as one of the tougher regulatory sanctions imposed on internet companies since the entry into force of the current food legislation. The new digital surveillance. From now on, platforms must verify periodically that the licenses are valid, that the physical addresses exist and that the businesses actually correspond to the advertised establishments. Restaurants without in-person service will have to state it clearly to users. At the same time, some cities have begun to implement transparent kitchens equipped with cameras that allow you to follow the preparation of food live. They are also being deployed artificial intelligence systems capable of detecting fake photographs, supervising kitchens and analyzing possible irregularities. Even delivery drivers have been incorporated into the surveillance system through reward programs for those who report suspicious establishments. The end of uncontrolled expansion. Beyond food safety, the campaign reflects a broader shift in Chinese regulatory strategy. For years, platforms grew by prioritizing the number of users, sellers and orders. Now Beijing wants to replace this accelerated expansion with a model more controlled and predictable. The appearance of tens of thousands of non-existent restaurants showed the extent to which competition had distorted the market. What began with a simple cake purchased online ended up revealing an ecosystem where millions of consumers believed they were choosing between thousands of different restaurants when, in many cases, behind the screen there was no establishment, no dining room and, sometimes, not even a real company. Image | TurnOnTheNight, Tracy Hunter, SKWTAM8 In Xataka | Just Eat knows that we Spaniards are hooked on Delivery. This is how … Read more

A man paid $23 for a PC case at an auction. He discovered inside a 24-core CPU and an RTX 3080 Ti

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Online auctions are full of unexpected opportunities, but few stories surprise as much as this one. Imagine entering a local second-hand platform with the idea of ​​​​getting a simple computer case. You’re not looking for anything spectacular, just a large chassis for future projectssomething functional and cheap. You place a low, almost token bid, and expect nothing more than a basic item wrapped in cardboard. However, when you pick it up, something doesn’t add up: it weighs more than expected, it sounds different, and what seemed like a routine purchase becomes the beginning of an anecdote that sweeps Reddit. The story broke through Redditwhere the buyer posted the find on r/pcmasterrace. According to images published by “LlamadeusGame”, the box was not empty nor did it contain old parts, but rather a complete high-end computer. In its photos you can see a TRX40 AORUS Pro WiFi motherboard with an AMD Ryzen Threadripper 3960X 24-core processor, accompanied by 256 GB of RAM and a graphics card NVIDIA GeForce RTX 3080 Ti. Although the interior shows accumulated dust, the screenshot shared by the user indicates that the system works and recognizes all hardware. When a cheap bid turns into treasure The details of the operation are available on the Capital City Online Auctions website, where the lot is still published. It is number 123 and describes a box Fractal Design Define 7 XLpriced at $317.99. The final bid was $23.50 plus commission, according to the official listing. The images associated with the advertisement only showed the box inside a cardboard and a catalog photo, without giving any clues as to its real contents. The contrast between the price paid and the real value of the components is striking. According to AMD and NVIDIA launch prices, only the Ryzen Threadripper 3960X processor It was originally sold for $1,399.while the RTX 3080 Ti It exceeded $1,100 at its release in 2022. Even with current depreciation, the complete set can fetch thousands of dollars on the secondhand market, especially because of the large amount of RAM. The Capital City Online Auctions ad included clear warnings: all items were sold “as-is,” with no warranty or return option. He also insisted in what bids had to be based on the written description and not in the images, which could be archival. Pickup was in-person only, with no delivery option, and the site’s rules state that any dispute must be resolved through arbitration in Ohio. The case raises an interesting question: how far does a buyer’s liability go in such a situation? The user paid what the bid indicated and picked up the item according to the rules, so they have not broken any auction rules. However, some commenters on Reddit wonder if they should have notified the company to correct what appears to be a cataloging error. Capital City Online Auctions’ policy makes it clear that sales are final, but the ethical debate remains open: take advantage of luck or return the find? Buying this PC case remembers that in online auctions there is always a component of risk and surprise. In this case, the buyer obtained high-level equipment for the price of a chassis part. Beyond the stroke of luck, the story underscores the importance of reading the fine print and reviewing lots before any move. Images | LlamadeusGame (Reddit) | Capital City Online Auctions In Xataka | Corning succeeded by manufacturing the “armored” glass in our phones. Now it has become Nvidia’s whim In Xataka | Nvidia’s superpower is not having money, it is making everyone work for it: Foxconn is the latest to join A version of this article was published in September 2025

We believed that raiding the refrigerator at dawn was a lack of willpower. Science has discovered the real culprit

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When night comes, there are many people who cannot conceive of watching a series without something in your hands to eatand not exactly a little carrot, but a little ice cream or some ultra-processed bun. Traditionally, popular culture and fad diets have dismissed this behavior as a simple “lack of willpower” or a sweet tooth. However, the most recent scientific evidence suggests that it is not gluttony, but chronic stress taking control. Night feeding. Eating at night is not always a disorder, but medical literature has been delineating for decades when the line is crossed. Already in 1955, a researcher defined the bases of the so-called night feeding syndrome (NES), characterized by a curious triad: lack of appetite in the morning, hyperphagia at the end of the day and insomnia with awakenings to raid the pantry in the middle of the night. Today, the diagnostic criteria have been updated and indicate that this syndrome occurs when more than 25% of daily calories are consumed after dinner, or if there are two or more episodes of nighttime binge eating per week for at least three months. The trigger It is none other than the hated stress and emotional dysregulation. Here various studies they point Because this nocturnal snacking is associated with a depressed mood, high levels of stress and the need to eat to find a little comfort after a very difficult day. The biological clock. When we eat late, usually after nine at night, or in the two hours before going to sleep, the reality is that we are sending contradictory signals to our ‘primal’ endocrine system. On the one hand, eating at night prolongs the rise of cortisol, which is the stress hormone, at a time when it should be at its lowest levels to prepare the body for sleep. In this way, the body postpones the secretion of the hormone that induces sleep, which is melatonin, and the serotonin and dopamine receptors are altered to respond to food intake. An explosive cocktail. Perhaps one of the most surprising recent findings is the devastating impact that this combination has on our digestive system, since if we combine a high level of stress with late dinners or nightly visits to the refrigerator, the result is catastrophic for the microbiota. Science suggests that those who combine poor sleep, stress and eating habits are up to 2.5 times more likely to see their intestinal health diminished, and also have noticeably less diversity in the bacteria in their microbiome. The whiting that bites its tail. In the end, we are faced with a textbook vicious cycle, wonderfully documented by the University of Arizona. According to your investigations60% of adults confess to itching at night on a regular basis. Of them, two-thirds admit that it is precisely lack of sleep that triggers junk food cravings. But precisely eating at these hours makes you less sleepy. And so on. Images | freepik In Xataka | We Spaniards love to have dinner at 9:30 p.m. and even at 10:00 p.m. Who is paying the price is our body

We have just discovered an intact medieval notebook in a latrine

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You know it and I know it: those few minutes we spend with our butts on the toilet are ideal for catching up on Instagram, sending a WhatsApp or even answering the email. Although there are some people who have gotten out of hand about using their cell phones in the toilet, which can end hemorrhoids or with company measures to minimize losses. Nowadays it is the mobile phone, but before it was a book or a magazine. And if today we talk about the toilet, in the past they were latrines. Of course, that winning combo of reading or writing in the bathroom has a dangerous B-side: you wouldn’t be the first or the last person whose cell phone has fallen from their pocket into the toilet. In fact, someone dropped a notebook into a latrine 700 years ago and now a team of archeology professionals just found it. The curious thing is not that the notebook is very old, it is its state of conservation: it is intact. The discovery. In excavations led by the Westphalian-Lippe Regional Association in the historic center of Paderborn, the team has found a notebook made of wood, leather and wax that dates back to between the 13th and 14th centuries and which, as you can see below, is in a magnificent state of preservation. In fact, archaeologist Barbara Rüschoff-Parzinger confirmed It is the only complete specimen of its characteristics in the entire region. The piece measures 10 by 7.5 centimeters, has ten double-sided wax pages and is protected by a leather bag with a lid. The cover retains a lily printed motif in its entirety, medieval symbol of purity and authority. As for the text, it is written in Latin, so as point the archaeologist responsible for the excavation, Sveva Gai, its possible owner was probably someone well-versed, a merchant from the city. In fact, short notes talk about commerce, finances or personal matters. Be careful because more than a notebook for writing with a pen, it was like a reusable waxed blackboard: the stylus had a sharp tip to engrave letters and a flat end to smooth the surface and erase. This erasure process left remains of other previous writings. A wood, leather and wax notebook in unbeatable condition… for being 800 years old and having been in a latrine. LWL Context. The notebook did not appear alone: ​​among the medieval objects recovered in one of the five latrines discovered during the excavation, they found barrels, a knife, complete medieval ceramic vessels, remains of fabrics and fragments of basketry. The set is what helps confirm the dating of the book. According to Gaithe area adjacent to the Abdinghof monastery was in the Middle Ages a neighborhood of the urban gentry of Paderborn. Knowing that it was a good neighborhood helps to better contextualize the objects, as Gai points out of the remains of fabric found: “The remains of silk fabric from the latrine were partially torn into rectangular pieces, some of them of extremely fine fabric and decoration. Perhaps it was toilet paper after the once elegant fabric was discarded.” Yes, they probably used silk as toilet paper. Why did he survive so well?. Incredible as it may seem, what saved that notebook was ending up at the bottom of a latrine in conditions of high humidity and without oxygen, a combination where the microorganisms responsible for decomposing materials such as wood or leather cannot survive. If this had not been the case, the notebook would have fallen apart in a few decades. In short: anaerobic preservation, one of the phenomena that have converted the sealed latrines in valuable deposits. Susanne Bretzel was the first person to examine the notebook and stands out that beyond giving off an unpleasant smell, it was barely necessary to clean the outside of the notebook: the wood held up without deforming and the interior pages were so adhered that no sediment had entered, which allowed the wax to remain intact and the manuscripts to be read. The unsolved mystery. No one knows how a notebook ended up inside a latrine, but Sveva Gai da the most likely explanation: that it fell by accident. What we do know is that this fate, no matter how fortuitous or deliberate, is precisely what allowed it to survive more than 700 years. The team has outlined a profile of the possible owner, but his name remains a mystery. There is, however, a way to discover it: if that latrine could be linked to a specific plot through the historical archives of Paderborn, the notebook could have a first and last name. In parallel, the team works to recover the layers of erased writing under the wax, where previous annotations, still unread, may be stacked. In Xataka | In medieval Europe, not only humans ended up on the gallows. Other criminals were also executed: the “murderer” pigs In Xataka | In the Middle Ages it was common to sleep inside wooden closets. The big question is why we stopped doing it. Cover | LWL

In 2008 China was installing metro stations in the middle of nowhere. In 2026 we have discovered how naive we were

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Last year it moved a video which showed that, when it comes to building construction, China looks far ahead of those sacred five-year plans. In fact, something fascinating happens in Beijing: you can find an empty subway entrance where there is no development, a wasteland. The reality is different, because if you return to the same place a few years later, the photo is completely different. Yes, China is an expert in long-term planning. For decades to come. The Chinese urban expansion of the last twenty years has consolidated a structural feature: infrastructure (particularly the metro) is built before the city exists that will do. This deliberate advancement produces a phase visible “empty”: stations buried in open fields, access through weeds without streets or commerce, deep deserted platforms under soils without residents. However, for the Chinese State this phase is not a failure but a transitory state within a horizon of 10–20 years where infrastructure precedes to induce and anchor the development that will come. The called “ghost cities” (from Lanzhou New Area to Xiongan) are less a symptom of error than an intermediate frame of a long temporal script that assumes that urbanization is safe even though its sequence is asymmetrical: first the subway, then the people. Station as a lever. The data from a Wuhan study show that the simple fact of having a metro nearby sharply increases the value of commercial premises within a radius of up to 400 meterseven if there is no city around yet: the line works as a future proof that can be monetized. On a large scale, since 2008 the State launched a wave of new cities and networks (thousands of kilometers of metro in a few years) that reduced congestion and attracted investment. But this anticipated layout was not always accompanied by schools, hospitals or good last-mile connections, which stopped people from leaving the saturated centers and extended the phase in which the new areas seem empty. The infrastructure came first… and the city took longer to appear. First there was the stop, and then Chongqing The Chongqing case. Possibly the most publicized. Caojiawan (the “nowhere station”) condensed the thesis in image: hidden accesses among weeds without streets or residents, surveillance of the viral world, and employees recognizing minimal use “for now” with the central argument of planning: the lane anticipated the neighborhood. Chongqing reinforces the pattern with its deep engineering (Hongtudimore than 60 meters and extension to more than 94), the extreme intermodal connection and the overinvestment in topology before demand. At the city scale, the same pattern runs through its network of viaducts and lines: radically anticipated infrastructure to induce future urban trajectories. Lanzhou New Area Map Ghost cities as a phase. Lanzhou New Area (with razed mountains, free zones, artificial lakes and replicas of monuments) first went through years of silence and then through a slow awakening, with the arrival of people in dribs and drabs, although there are still doubts about the figures. Urban planners who have followed its evolution maintain that calling a “ghost city” is to confuse a phase with the final destination: these projects are conceived for 15–20 yearsnot to be judged at 3–5. In other words, the State does not build for the present, but for the moment when transportation connects, density closes and the population crosses a certain threshold. From that perspective, the initial emptiness does not clash with the bet, it is simply part of the planned schedule. Between ambition and sustainability. Bloomberg recalled a while ago that the model has a cost: most meters they are not profitablethey increase the debt of local governments and there is a risk of building more than necessary in medium-sized cities. The national authority first relaxed the requirements (asking for less population to authorize lines) and then tightened them again and stopped projects, realizing that what helps create value can also sink finances. Various analysts have pointed out that in many places the subway was chosen “out of inertia”, when solutions such as a good bus system with a reserved platform could have provided almost the same with much less debt. The dilemma is no longer whether there will be extensive networks (because they already exist) but whetherat what point to invest in advance it stops being a gamble and becomes a burden. From building to operating. Once built the physical networkthe main problem is no longer digging tunnels but making that work well. There are a large number of stations with a single entrance that get stuck, long and poorly resolved transfers, lack of large connection points between lines and absence of tracks prepared for fast trains to overtake slow ones, because these decisions were not thought out from the beginning. The same logic of “first we build and then we’ll see” now causes circulation problemssecurity, accessibility and response to extreme rains as shown by the Zhengzhou case. They counted in The Guardian that to go from “building fast” to “running well” it is necessary to redesign with the traveler’s experience in mind, not just that of the construction engineer. The temporary strategy. In short, China has turned into a norm an idea that inverts the usual order in the West: the subway is not built because there is already a city, but so that the city ​​exists after. The station tickets today empty are, in their logic, the first material step of future neighborhoods, within a plan that assumes long deadlines and accepts periods of emptiness as part of the price of forcing urbanization. The risk is in the financial cost and in going from “building” to “making it work”, but the advantage is be able to capture value and shape the city in advance. What to today’s eyes seems like an unproductive excess, on a twenty-year scale is only the first phase. A version of this article was published in November 2025 Image | Luke PusateriLanzhou Government Bulletin System, Unusual Places In Xataka | There are skyscrapers so monstrously tall … Read more

We thought platypuses were strange animals. We just discovered that they are even rarer

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The platypus has been a box of surprises since we formally “discovered” it almost 230 years ago, when the first stuffed specimen arrived in Europe and the naturalist George Shaw thought which was a hoax sewn up by some Chinese taxidermist. And let’s see, the platypus is truly unique in its species: it is a mammal that lays eggs, detects electric fields with its beak and glows under ultraviolet light. As if the above were not enough, a research team just found a surprising explanation for the color of his coat. What’s new about the platypus. The research, led by biologist Jessica Leigh Dobson from Ghent University, has identified that the platypus has melanosomes holes in their fur. What is this exactly? The organelles responsible for giving us color in our skin, hair or eyes. Until now, science assumed that hollow melanosomes existed only in birds and that those of mammals were always solid. Curiously, in birds those melanosomes are the ones that produce iridescent colors, but the platypus is dark brown, without flashes or shine. Furthermore, their melanosomes are mostly spherical, a morphology that in other animals is associated with red or orange tones, but not brown. The reason is a mystery. Why it is important. Melamine is the standard for vertebrates to provide color and protect from the sun, but what is truly key is its packaging. For decades the shape of melanosomes has served as an evolutionary fingerprint to differentiate the branches of birds and mammals. The platypus just killed it, but of course, it is so disconcerting from the beginning that it took researchers 80 years to agree on what it was, as its scientific name summarizes. The most reasonable hypothesis What this research team proposes is that the hollow melanosomes could have been an adaptation to the aquatic lifestyle of the platypus, a kind of thermal insulation mechanism in the fur for life in cold waters. But of course, if this is the case, why doesn’t the same happen with other semi-aquatic mammals? If confirmed, it would imply that this condition of hollow melanosomes evolved independently in birds and only in this mammal. The platypus continues to go on its own. Context. The platypus deserves a separate chapter in biology books: it is one of only five species of mammals that lay eggs, the monotremes. And what can we say about its appearance: it has the beak of a duck and the tail of a beaver. Although it seems harmless, it is not: it has venom like snakes and the males also have poisonous spurs on their hind legs capable of causing intense pain in humans. The icing on the cake is that the animal is capable of detecting the electric fields generated by the muscles of its prey underwater. But the platypus is different outside and inside: He is a genetic rebel. While humans have only two sex chromosomes (XX or XY), he has ten. This complexity makes their system for determining sex totally different from that of other mammals. It is, literally, one of the few animals that forces science to consider pre-established laws. How they discovered it. The discovery was almost a coincidence: Jessica Dobson was building a database of melanosomes from different mammal species when her thesis supervisor detected this platypus anomaly. The scientist passed the samples through a high-resolution microscope to examine the melanosomes inside the hairs of 12 platypus specimens taken from different parts of the body. He then extended the comparison to echidnas, marsupials such as wombats and opossums, and a hundred more mammals. No trace of hollow melanosomes, and for example their cousins, the echidnas, also lay eggs. In Xataka | The “Spanish platypus” exists and is on the verge of extinction: the very rare animal that only lives on the peninsula In Xataka | A 24-year-old platypus challenges what we knew about the longevity of the strangest mammals Cover | Dr Philip Bethge

In 1970 Japan built homes of the future where each capsule would be replaceable. Half a century later he discovered that no one knew how to repair them

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In 1970, during the Osaka World Expomillions of people lined up to enter pavilions where Japan showed how it imagined the 21st century: domestic video calls, automated cities, assistant robots and modular homes capable of changing over time. That event was so impressive that many visitors came away convinced that the future was going to arrive much sooner than expected. The spaceship that Japan wanted. In 1972, in the heart of Tokyo, a building appears that seemed to have landed from the future. The Nakagin Capsule Tower It was unlike anything of its time: two concrete towers covered by 140 metal capsules with circular windows, like a stack of futuristic washing machines or a block of space modules suspended over Ginza. The architect Kisho Kurokawa He imagined those capsules as replaceable homes that could be removed and replaced every 25 years, just as an organism renews its cells. The idea perfectly summed up the Japanese postwar optimism: mutable cities, living architecture and a future where houses would function more as interchangeable pieces than as permanent buildings. Half a century later, Japan discovered something much more uncomfortable: no one really knew how to repair that vision of the future. Nakagin Capsule Tower The metabolic dream. The Nakagin was born within the Metabolist movementa Japanese architectural movement obsessed with constant change. After the destruction of World War II, architects like Kurokawa wanted break with the western idea of eternal buildings of stone and brick. Japan lived with earthquakes, fires and permanent reconstructions. For them, the city had to behave like a living being capable of growing, adapting and transforming. The capsules were the perfect symbol of that philosophy. Each module It measured just ten square meters and included a bed, folding desk, compact bathroom, Sony television and even a tape player. They were aimed at typical Tokyo office workers who wanted a small urban retreat during the week, avoiding hours of travel to the suburbs. Kurokawa saw those capsules as the beginning of a new way of ultramobile life where people would change their homes just as they change their technology. Interior of one of the capsules The problem: the future cannot be dismantled. The great irony of the Nakagin is that the central element of its design it never worked. The capsules had to be periodically undocked and replaced with more modern versions, allowing the building to survive for centuries. On paper it seemed brilliant, but in practice It was almost impossible. Individual capsules could not be removed without disassembling all those that were on top, the costs were gigantic and the system hid structural problems that worsened over time. The joints began to rust, constant leaks appeared, and asbestos complicated any serious attempt at renovation. As Tokyo continued to move towards the 21st century, that supposed architecture of tomorrow began to look an aged relic from an old science fiction. The capsules that were supposed to be renovated like Lego pieces ended up converted into small corroded boxes where there were hardly any permanent residents left. Entrance to the Tower From futuristic utopia to cult ruin. As the decades passed, Nakagin stopped functioning as a residential experiment and began to transform into something else: a work of worship. Architects, photographers, designers and tourists arrived fascinated by that impossible building that continued to resist in the middle of Ginza like a time capsule from the 70s. Many apartments were used as creative studioswarehouses or simple occasional shelters. The community that formed around the building ended up being almost more important than its original use. Some residents organized guided tours, parties and campaigns to save the tower as the deterioration continued. In fact, Francis Ford Coppola, Keanu Reeves and numerous international artists They visited the complex attracted by that strange mix of decadence and futurism. What had failed as a practical solution survived as a cultural icon. Demolishing a utopian future. In 2022 it finally started the disassembly of the Nakagin Capsule Tower. The images were almost poetic: cranes tearing off the capsules one by one, as if they were dismantling an abandoned space station. Most were destroyed, but a small group of owners and preservationists managed to save 23 modules. Some have been completely restored with their original televisions, telephones and furniture, others have ended up in museums, galleries, hotels or exhibitions spread across Japan, Europe and the United States. Paradoxically, Kurokawa’s idea ended up being fulfilled otherwise: The capsules did end up separating and traveling around the world, although not as part of a living city, but as fossils from a future that never came to exist. The failure that changed architecture. The Nakagin It failed as a building, but triumphed as an idea. It inspired capsule hotels, modular architecture, and much of the contemporary obsession with micro-apartments and flexible spaces. Furthermore, its influence can be traced in high-tech projects later and even in current debates on sustainability and compact housing. What is fascinating is that the building simultaneously demonstrated two opposite things: that futuristic architecture can be decades ahead of its time… and that a vision that is too advanced can also become impossible to maintain in the real world. Japan dreamed of housing where each apartment would be replaceable and adaptable forever, and in the end he discovered that he had built something much stranger: a masterpiece of the future condemned to age before the future itself. Image | David Meenagh, Jordy Meow, Kestrel, Dick Thomas Johnson In Xataka | The incredible story of the tallest building on the planet that ended up becoming the largest swimming pool in the Soviet Union In Xataka | After the Guggenheim fever in Bilbao, Alcorcón wanted to replicate its success with a megaproject in 2004. It ended very badly.

Japanese scientists have discovered what the clouds of Venus have to do with your kitchen sink

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In 2016, the Japanese Akatsuki mission detected a massive disturbance on Venus which left scientists baffled. For a long time, its origin has been a mystery. However, now a team of researchers from the University of Tokyo has found the answer. An answer that, curiously, has a lot to do with your kitchen sink. Simulations. Through atmospheric simulations and fluid dynamics models, scientists at the University of Tokyo have discovered that a phenomenon takes place in the atmosphere of Venus, called hydraulic jump, which also happens in your sink every time you turn on the tap. You have surely noticed that, right at the point where the water hits the sink, it moves quickly and in a very thin layer. However, a circle is formed whose outer layers are thicker and move much more slowly. In other words, rapidly flowing liquid abruptly slows down and increases in height. The reasons. Initially, when water falls into the sink, its speed is greater than the local speed of the waves that are generated. However, friction with the sink surface slows down the waterso just the opposite happens. As a result, water begins to accumulate, forming a deeper layer that also moves more unstablely. What was seen on Venus. In 2016, a massive disturbance was detected moving 6,000 kilometers wide around the equator of Venus. This, in addition, was moving through the clouds, leaving behind a dark patch of denser clouds. These images taken on August 18 (left) and August 27 (right), 2016, by the near-infrared camera of Japan’s Akatsuki Venus probe, show the clear line of denser (darker) clouds moving across the planet. Special clouds. The clouds of Venuscomposed mostly of sulfuric acid, are an interesting mystery. They are known to rotate very quickly, with a speed 60 times greater than the planet’s own rotation. This, as explained in Universe Todaywould be more or less equivalent to a Formula 1 car circling a bicycle. They are made up of 3 layers, of which only the outermost one is well known. The two innermost ones harbor many mysteries, which is why these scientists have searched there. An unstable wave. In one of these internal layers, something known as a Kelvin wave is formed. It moves east very quickly, but there comes a time when it becomes periodically unstable. At that point, the wind speed slows down, like tap water, and the atmosphere builds up into a thicker layer, like water over a sink. This drastic change causes a powerful upward current of air, which pushes sulfuric acid vapor into the atmosphere, where it condenses and forms that broad wall of clouds that was detected in 2016. other planets. This is the largest hydraulic jump that has been detected in the solar system. However, these scientists believe that, using similar models, perhaps something similar could be detected on other planets. For example, they believe that Mars is a good candidate to host this phenomenon. It would be interesting to check, since Venus is too inhospitable a planet to colonize, but science Yes, he has his sights set on colonizing Mars in the future. Knowing perfectly the mysteries that its sky houses is necessary for the success of this type of missions. Image | MIT/Zeimusu | T. Imamura, Y. Maejima, K. Sugiyama et al., 2026 In Xataka | A green beam illuminated Venus in the night sky. It is not an unknown phenomenon, but it is very difficult to see

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