world

China has invented the coldest helium-free alloy in the world. The American DARPA is not going to like it

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In addition to having an extremely high voice, filling balloons or scuba diving, the most widespread use of helium is in refrigeration, a crucial task in countless tasks ranging from magnets for magnetic resonance imaging to particle accelerators (with conventional helium or Helium-4) to cryogenic cooling for quantum computing or neutron detectors (Helium -3). Critical industries. Because yes, everything is helium, but the circumstances change depending on the isotope. Thus, while Helium-4 is abundant in the atmosphere but difficult to retain (it escapes into the atmosphere due to its lightness), Helium-3 is scarce on Earth and is also difficult to obtain: it is a byproduct of the aging of tritium nuclear warheads. Simply put: the helium needed to cool quantum computers and cutting-edge physics acts as a bottleneck to research. A Chinese research team has published in Nature a solution: a metal alloy that cools almost to absolute zero without needing helium. The invention. It is a metallic alloy, EuCo₂Al₉ (ECA), a rare earth intermetallic compound capable of reaching 106 millikelvin (–273.05 °C), thus establishing a record: it is the lowest temperature achieved by a metallic magnetocaloric material without using helium-3. Another peculiarity is that it combines two seemingly antagonistic properties: it acts like a sponge that absorbs heat from the environment and its thermal conduction is between 50 and 100 times greater than other similar materials. A combination that postulates it to be the definitive supercoolant. The network structure, its interactions and the resulting supersolid spin state. Chinese Academy of Sciences Why is it important. We have already seen that helium-3 is a rare commodity and its usefulness in advanced physics and quantum computing. Finding an alternative opens the door to alleviating that bottleneck, although it is still in an early stage. Historically the largest global suppliers of helium-3 They have been the United States and Russiaas a byproduct of its nuclear programs. With this invention, China is one step closer to achieving independence of this strategic resource because it currently imports almost all of the helium-3 it consumes (95%, according to this paper 2024). But the United States is also interested: at the end of January, the Defense Advanced Research Projects Agency launched a call to develop a modular helium-3-free cooling system for quantum and defense technologies. In less than two weeks I had the solution, yes, from China. Context. The superconducting quantum computers They require working below 1 Kelvin and in that scenario the standard for decades has been dilution refrigeration technology. In a few words and in a simplified way: expensive refrigeration contraptions that occupy cubic meters and need helium-3 continuously. This limits its scalability, practically limiting it to specialized laboratories. Adiabatic demagnetization cooling on which the ECA is based is not new, in fact the concept is a century oldbut its features have never been up to par. As explains the CASthe endemic problem was its poor thermal conductivity. According to the South China Morning PostPeking University already built two refrigerators using this principle in 2024, which have been operational for several months. How have they done it. The cooling technique is called adiabatic demagnetization (ADR): a magnetic field is applied to the cold material, so that the internal “magnets” of the material align and release heat to the outside. When the magnetic field is removed, they return to their natural disordered state, absorbing heat from the surroundings, thereby lowering the temperature. To solve the historical problem of low conductivity, ECA enters an unusual “metallic spin supersolid” physical state, which combines high heat absorption capacity with thermal conductivity similar to a conventional metal. Yes, but. Being able to drop the temperature to 106 mK is remarkable, but the reality is that classic dilution systems in their most advanced version are capable of reaching 10 mK or less. And this is where much of quantum computing operates. In short: there is still a thermal gap to overcome. On the other hand, it is a first step: going from laboratory material and even a prototype to the industrial or military environment is a long road. Scalability and costs will be decisive. Finally, it should be noted that the composition of the ECA includes Europium (in addition to cobalt and aluminum), a rare earth that makes the operation difficult and expensive. Nevertheless, China starts from a privileged positionas long as it is the absolute leader in this industry. In Xataka | Spiderman’s web is no longer science fiction: China has just created something very similar after years of vetoes In Xataka | Japan has a rare earth megadeposit: 700 years of consumption to challenge China Cover | VALGO, ASML

China has just discovered the largest deposit of rare earths in the world. And he did it just when he needed it most.

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China has a privileged position in terms of possession of rare earthbut it has just surprised the world with a new discovery: the Ministry of Natural Resources has confirmed that the Maoniuping deposit, in Sichuan province, is now the largest deposit of light rare earths on the planet. The news comes at a key moment, since it is these minerals that are the protagonists one of the hottest fronts between Beijing and Washington in their tariff war. What exactly has been found. New exploration in the Maoniuping mining area in Mianning county has confirmed the existence of 9.67 million tons of rare earth oxideswhich represents an increase of more than 300% compared to the reserves that were known until now, as announced by the Chinese Ministry of Natural Resources. With this data, the deposit surpasses that of Bayan Obo, in Inner Mongolia, which until now held the title of the largest light rare earth mine in the world with 44 million tons of proven industrial reserves. In addition to rare earth oxides, surveys have identified 27.1 million tons of fluorspar and 37.2 million tons of barite, both classified as deposits of exceptional scale. Why does it matter? Rare earth elements are the 17 elements that make electric car engines, fiber optic amplifiers, advanced weapons systems and smartphones possible, among many other technological elements that we use in our daily lives. Without them, much of the technology and defense industry simply does not work. China already produces more than 80% of the world supply annual of these materials, according to the state agency Xinhua. And this discovery further reinforces China’s position until now. The discovery within the discovery. According to Wang Denghong, director of the Institute of Mineral Resources of the Chinese Academy of Geological Sciences, what is truly striking about the discovery is not only the rare earths but fluorite and barite. Fluorite is an essential ingredient in the manufacturing of semiconductors and lithium-ion batteries. Barite, for its part, is essential in oil and gas extraction: it is used to stabilize wells and prevent blowouts. Without this element, hydrocarbon exploration, including fracking, would be paralyzed. Restrictions. Since April last year, China introduced export restrictions on seven rare earths and permanent magnets, precisely in response to the tariffs imposed by Donald Trump about Chinese products. China controls the gateway to rare earths, and basically any company that wants to take these materials out of the country needs express government authorization. Exports to Europe have picked up since the new licensing regime was implemented. Those going to the United States remain stagnant, according to collect Interesting Engineering. What’s coming now. With this discovery, Beijing consolidates its ability to use critical minerals as diplomatic and commercial leverage. The West has been trying for years diversify your supply chains of rare earths with projects in Australia, Canada or northern Europe, but none yet approach the scale of the Asian country. Cover image | aboodi vesakaran and ZME Science In Xataka | In 2010, Japan learned to acquire its rare earths without depending on China. Germany wants to copy its strategy now

NASA chose 34 points around the world to track its lunar mission and only one in Spain. It is in Seville, on a rooftop

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If the weather behaves well and no problemsnext April 1 (early morning on April 2 in Spain) NASA will launch Artemis II. It will be the first manned mission of the Artemis programand in it four astronauts will travel aboard the Orion capsule to orbit around the Moon. during the mission 34 locations spread around the world will track the spacecraft’s radio signals and send their data to NASA. One of these headquarters will be in a special location: the roof of the Higher Technical School of Engineering of the University of Seville. A NASA antenna in Seville. In August 2025, NASA published an open call for third-party organizations to demonstrate their tracking capabilities during an actual manned mission. All types of organizations, agencies and institutions showed up, and even private radio amateurs also did so. Of the 34 selected around the world, the ETSi is the only Spanish center that will participate in this monitoring. The Orbisat system in operation. Source: Integrasys. space roof. It will do so in collaboration with Integrasys, a Spanish company specialized in this field and which has installed its platform on the roof of the ETSi building. Orbisat. This 2.5 meter high system has been developed at its Luxembourg subsidiary and is designed to track space vehicles both during launch and during subsequent operations. Plan B. The ETSi and the Orbisat system will receive the radio signals that the Orion spacecraft emits during its trip, process them and send them in real time to NASA for analysis. The key data they will measure is the Doppler effect of the signal: the variation in frequency of the waves depending on the relative speed between the ship and the antenna. It is a key parameter to determine both the position of the ship and to calculate its trajectory. It should be noted here that this system will not be responsible for the main monitoring, which will be done from the network Deep Space Network from NASA. This monitoring will be complementary and will help the agency evaluate what monitoring capabilities it can use outside of its own infrastructure. It’s a plan B. Why 34 antennas?. This support program responds to a very clear strategy of the space agency: build a public-private space tracking ecosystem that does not depend on its own network. Kevin Coggins, deputy director of the NASA SCaN programhe explained in the official announcement that “it is not about tracking a mission, but rather about building a resilient ecosystem that supports future exploration.” The initiative is an evolution of what was already done in 2022 with Artemis I, when ten volunteers tracked the unmanned mission. On that occasion, data format and quality problems were detected, and for Artemis II, participants have been forced to meet certain standards. An opportunity for Seville and for Integrasys. The Orbisat platform will be installed in Seville permanently, which turns the ETSi into a real monitoring infrastructure and not a one-off collaboration. For the company Integrasys, based in Las Rozas (Madrid), this first direct collaboration with NASA adds to those it already had with the Space Force and the US Space Command. Now it remains to be seen if this serves as a gateway to its participation also in future space missions such as Artemis III, which will land on the lunar surface. The Aerospace Technology Group of the University of Vigo will also participate in monitoring the mission. The students are in luck. The Master in Space Systems Operation at the University of Seville is taught for the first time in this 2025-26 academic year. Students will have direct access to the data generated by Orbisat during the Artemis II missionand with them they will be able to apply orbital determination and trajectory analysis techniques in that real scenario. For them this occasion is special, since they will be able to go beyond the books and have access to the telemetry of a manned spacecraft orbiting the Moon. A much more powerful way to learn, without a doubt. Spain on space map. The network of the 34 selected includes organizations such as the Canadian Space Agency, the German DLR, companies such as Telespazio and universities from Switzerland, Japan and the United States. Seville is on that list along with individual radio amateurs from California or South Dakota, amateur radio organizations such as AMSAT in Argentina or Germany, research centers in Cameroon or New Zealand and professional stations in Norway and the United Kingdom. The conclusion is clear: NASA has here the beginning of what can be a heterogeneous and decentralized network with monitoring capabilities. The Spanish participation on the Artemis II mission, by the way, goes a little furtherbut could go much further even. Image | NASA | ETSi In Xataka | In 2018, Elon Musk put his own car into orbit. Eight years later it is still circling the Earth

Terence Tao is the best mathematician in the world. He has recognized that he is using AI to solve one of the Millennium Problems

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Stating outright which person is the best in the world at something is risky. If we stick to cutting-edge research in the field of mathematics the German Peter Scholze, the British James Maynard or the Chinese-American Yitang Zhang, among other researchers, are usually considered the most capable living mathematicians. However, in the scientific community there is an almost unanimous consensus that Terence Tao, who has dual Australian and American nationality, is the authentic “Mozart of mathematics.” His prestige has been earned hard. He won the Fields Medal, which is often considered the Nobel Prize in mathematicsin 2006, when he was 31 years old. And he was awarded it for his contributions in three fundamental areas: number theory, partial differential equations and harmonic analysis. However, the Fields Medal committee especially highlighted his ability to connect areas that most mathematicians considered isolated. In any case, this is not all. Tao is often admired for his versatility. Many elite mathematicians specialize in a specific field, but this scientist has produced cutting-edge work in combinatorics and compressed detection, in addition to the three areas for which he received the Fields Medal. And, furthermore, he has earned a reputation as a generous researcher who works very well in a team and is always willing to adopt new technologies to address the greatest mathematical challenges. AI is an essential tool in mathematics for Terence Tao Dwarkesh Patel, an Indian-American content creator specializing in technology and artificial intelligence (IA) who has established himself as one of the most influential voices in Silicon Valley thanks to his interviews with Elon Musk, Mark Zuckerberg, Satya Nadella, Ilya Sutskever and Demis Hassabis, published just a few days ago a very interesting conversation with Terence Tao. And AI has been the absolute protagonist of a dialogue in which this mathematician has enthusiastically defended the role that this technology already has as a “trusted co-author” in research in the area of ​​mathematics. Terence Tao is currently one of the biggest promoters of Lean within the scientific community In October 2024 Meta AIMeta’s AI, managed to generalize the Lyapunov function. Russian mathematician Aleksander Lyapunov proposed the concept of the function that bears his name in 1892. His work is a very important tool in the study of dynamical systems, but mathematicians have struggled since then to find a general method that would allow them to identify Lyapunov functions. And they were not successful. However, Meta AI has had it. This is just one example that clearly illustrates the capacity that AI already has when it comes to facing some mathematical challenges. Terence Tao does not believe that AI will end up replacing researchers; argues that it is actually a very valuable tool that allows mathematicians to leave behind individual research and collaborate on much larger and more ambitious projects. And he leads by example. In fact, you have introduced Lean into your daily workflow. This tool is a proof assistant and programming language designed to verify mathematical reasoning and verify that it is completely correct. Tao is currently one of the biggest proponents of Lean within the scientific community. “I hope that the AI ​​of 2026, when used correctly, will be a trusted co-author in research in mathematics. And in many other fields as well,” defends Terence Tao. He is currently using this technology to confront some of the biggest math challenges there aresuch as the Collatz conjecture or the Navier-Stokes equations. The latter give shape to one of the Millennium Problems and they seek, broadly speaking, to understand how fluids behave. Interestingly, these equations are constantly used to predict the weather or design airplanes, among many other applications, but we still don’t understand precisely how they work. Terence Tao and AI are one of our best assets when it comes to definitively solving this enigma. Image | Generated by Xataka with Gemini More information | Dwarkesh Patel In Xataka | These two problems have baffled mathematicians for decades. A genius has solved them with a stroke of the pen

the toxic hell of Tehran after the bombing of the worst fuel in the world

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The water in emergency reserves is no longer transparent; It has turned a thick black. The city’s once passable streets are covered in a slippery, dark layer. “Night became morning and morning, with all the smoke, became night again,” said one astonished resident. These are not scenes from a dystopian movie, but the reality that describe The New York Times after the bombings on the oil infrastructure in Iran. The attacks have left Tehran residents facing a rain laden with oil and toxins that stains cars, roofs and hanging clothes. Faced with this unprecedented situation, the Iranian authorities and the Red Crescent have been forced to ask the more than 9 million inhabitants of the capital to lock themselves in their homes, with severe warnings for children, the elderly and pregnant women. What falls from the sky is no longer just water; It’s poison. A fog that reaches space. The constant military bombings against multiple fuel facilities in and around Tehran, such as the Shahran and Aqdasieh depots, have left a black scar. As detailed GuardianDays after the impacts, satellite images showed that the facilities were still burning, sending columns of dense smoke into the atmosphere. But the problem is aggravated by the type of fuel that burns. An exhaustive analysis of The New York Times reveals that the clouds They are extraordinarily toxic because Iran burns and stores large quantities of “mazut.” This is a very low quality residual fuel, the “bottom of the barrel” that remains after refining the oil, and which contains very high levels of sulfur. Although much of the world prohibits its use, Iran depends on it due to its aging refineries and international sanctions. And it started to rain black. When the facilities were blown up, smoke laden with soot, sulfur dioxide and nitrogen compounds rose to the skies. Why did it rain black? Akshay Deoras, scientist at the University of Reading consulted by Guardianand the magazine Nature They explain it with a clear metaphor: the raindrops acted like “sponges or magnets”, absorbing all the pollutants and oil suspended in the air before collapsing on the city. Furthermore, Tehran is a victim of its own geography. As the magazine explains NaturelThe city is surrounded by the Alborz mountains. This generates a phenomenon known as “thermal inversion,” where a layer of warm air traps cold, contaminated air near the ground, functioning as a lid that prevents toxicity from dispersing. The invisible enemy. The citizens they expressed thatAlmost instantly, they began to suffer headaches, eye and skin irritation, and severe breathing difficulties. The Iranian Red Crescent issued urgent alerts warning that the mixture of humidity and sulfur dioxide was generating acid rain, capable of causing chemical burns on the skin. However, the medical community’s real fear is long-term. This is the “invisible enemy” that Professor Armin Sorooshian talks about in The Conversation. Not only do explosions release petroleum smoke, but the ammunition itself contains heavy metals such as lead and mercury. Exposure to fine particles (PM2.5) that penetrate deep into the lungs brings with it a devastating legacy. As John Balmes, professor emeritus at the University of California, warns, in The New York Times: “Can you imagine a fire in an oil depot in Manhattan? That’s what we’re talking about.” Experts predict a future increase in cardiovascular disease, cognitive damage, DNA alterations and various types of cancer due to the carcinogens present, such as benzene. The threat also filters into what the population drinks and eats. The World Health Organization (WHO) and the United Nations Environment Program (UNEP) have warned that spilled oil and toxic rain are contaminating groundwater, public canals and farmland, poisoning the food chain in a country already suffering from a severe drought. Beyond: ecocide. The magnitude of the disaster brings legal loopholes and massive collateral damage to the table. Iran has called the attacks “ecocide,” a term that makes sense when analyzing international law. The legal limbo that allows this horror. It may seem paradoxical, but bombing a fuel tank is not technically a chemical attack. Expert Alexandra R. Harrington explained it in detail in The Conversation: Although the Geneva Conventions prohibit destroying civil infrastructure, they do not specifically shield gasoline tanks or industrial products. Added to this is that international treaties on chemical weapons only punish the use of weapons manufactured expressly for this purpose. The result? A huge legal loophole that allows a refinery to explode and an entire city to be poisoned without having fired a single factory-made toxic missile. A black sea in the Gulf. The disaster is not only in the sky of Tehran. If we look towards the Persian Gulf and the Strait of Hormuz, the war has turned the water into another ground zero after direct hits against oil tankers and desalination plants. Oil spills are already spreading across the sea, putting local fishing communities on the ropes and drowning coral reefs. Species that were already on the verge of extinction, like dugongsthey are now swimming in a death trap. The smoke that crossed half the world. The gigantic column of black smoke that was born in the Iranian deposits has not remained stagnant there. The currents have been dragged eastwarddrawing a dark line over Afghanistan and China until it sneaks into Russian airspace. The big fear now is that if all that accumulated soot falls on the high mountain ranges, it will act as a magnet for the sun and drastically accelerate the melting of the glaciers. The hidden climate bill. There is collateral damage that is hardly talked about and that Deutsche Welle has put on the table: The military machinery is an insatiable devourer of fossil fuels. Bombings and troop movements are injecting millions of tons of CO2 into the atmosphere in record time. The most frustrating thing about this situation is that the current climate agreements have a “fine print” that exempts countries from accounting for emissions derived from war in their official balance sheets. An indelible toxic legacy. Historically, … Read more

One of the 100 most harmful species in the world has settled in Spain. It’s a cute domestic turtle

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These are not good times for Spanish tortoises. On the peninsula we only have two native species of freshwater turtle: the leprous ones (Mauremys leprosa) and the European ones (Emys orbicularis). Both are in decline and it is not (only) because of hunting and the destruction of their habitats; It is, above all, for something much more prosaic: the hundreds of turtles that are sold every year and that they end up abandoned in rivers, reservoirs or ponds. This is not new; we have been around since 97 prohibiting the sale of more and more exotic turtles. The problem is that the situation has gotten completely out of hand. The turtles have become a real plague in the interior provinces. Turtles are a terrible gift. And, as I say, we have known this for almost 30 years. The State (in 1997, in 2013 and in 2025) has successively prohibited the sale of more and more species of turtles. It hasn’t helped much: every time a species is banned, it is replaced by another. Especially between individuals. They all end up in the same way: in the natural environment. The best example is less than a year old: in May 2025, the Ministry expanded the Spanish Catalog of Invasive Exotic Species incorporating the two genera of turtles (Pseudemys and Mauremys) that the stores began to sell when the Trachemys in 2013. There is no systematic study of the problem, but the signs are clear. In Salamanca, for example there is confirmed presence of painted turtles and Florida red-bellied turtles. And in Extremadura, according to the Boardthere are eight exotic turtles for every native one in the Guadiana. In Catalonia, to finish the walk through the peninsular geography, 17 different species have been found in different natural areas. And it’s not nonsense. After all, the Florida turtle is one of the 100 most harmful invasive alien species in the world. Although They have been banned for more than 30 years throughout Europe, they continue to wreak havoc. These species represent the second cause of biodiversity loss in the world. What to do if we have a turtle at home? It is important to note that, one way or another, it is only legal to have banned turtles at home if they were purchased before the ban and were declared at the time to the relevant authority. But its transfer, sale or reproduction is prohibited; and, of course, release them into the natural environment. Image | Pedro Novales In Xataka | There are more and more turtles on the beaches of the Spanish Mediterranean. This is not good news for anyone involved.

It is pure resilience in the face of a broken world.

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If you were born between the early 80s and mid-90s, it is very likely that you have already crossed the barrier of 30 years (or even 40) and still have a controller on your living room table. Traditionally, society has stigmatized this habit in adulthood, calling it “Peter Pan syndrome”, immaturity or inability to assume real-life responsibilities because ‘playing games at 30 is not normal’. However, science and sociology They have a radically different perspective.: It’s not immaturity, it’s pure resilience. A frustration. These stigmas that are on the table, the truth is that they are very established (especially among the elderly), thinking that video games are only for the youngest, but the reality is that a video game is a creative work such as a book, a series or a movie. But the stigma that continuing to play at 30 or 40 is an ‘immature’ attitude is still on the table, and psychology has said something very different. Its origin. To understand why millennials cling to interactive entertainment, you must first understand their economic reality. The prestigious Harvard University economist, Raj Chetty, document in 2017 a devastating phenomenon: the plummet of absolute social mobility. And while those born in 1940 had between a 90 and 91% chance of surpassing their parents’ income, for those born in 1980 this success rate plummeted to a mere 50%. And we are facing a generation that was promised that higher education and constant effort would guarantee its economic prosperity, but the reality has been marked by a financial crisisjob insecurity and a real estate market that generated a deep feeling of deception. The well-being. In a living environment where control is minimal, video games offer fair systems, clear rules and rewards proportional to the effort made. This was evidenced in a macro investigation published in March 2025 where it is categorically denied that playing is “unhealthy escapism.” After analyzing over 140,000 hours of data of Nintendo players, the OII concluded that gaming time does not correlate negatively with mental health. What really matters is the “quality” of the game, since players who report positive motivations, such as the autonomy to make their own decisions or the feeling of feeling that they are improving, see their general well-being increase. More well-being. This is a thesis that has been consolidated for a long time, since in 2021 another study analyzed 39,000 Animal Crossing or Plants vs Zombies players, concluding that playing more hours was correlated with better emotional well-being. Many advantages of playing. Video games not only relieve stress, they shape our ability to deal with adversity. According to a 2018 survey50% of millennials surveyed said they played games daily to relax and relieve stress. But even more revealing is the 47% of participants who said that the success they had achieved in video games increased their confidence in solving problems in real life. There are better genres. A 2022 study showed that multiplayer games improve our social connection, while RPGs are strongly linked to improvements in autonomy and competence, especially in women. And surprisingly, even the survival horror have been shown to have cathartic benefits. In this way, dedicating an hour a day to playing is related to adult profiles that are more sociable, optimistic and, above all, more emotionally resilient than those who do not play at all. Your conclusion. In this way, the set of several articles with a high reputation behind them suggests that adults who dedicate their free time to exploring large maps, managing virtual farms or completing raids with their friends are not running away from their responsibilities due to immaturity. They are using tools to regain their mental health or satisfy their psychological needs like someone watching a series on Netflix when they get home from work. And no one tells these last people that they are immature. In Xataka | If the question is “how does Nintendo make money” the answer is not video games: it is a much more ambitious emporium

The world is desperately asking Ukraine for its antidote to the Shahed. And Ukraine has decided to keep them for its war

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In September 2023, a swarm of cheap drones managed to get through some of the most advanced air defenses in the world and paralyzing strategic infrastructure in the Middle East for hours. That left a conclusion for many armies: the air war of the 21st century no longer depends only on fighters or missiles that cost real fortunes, but also on small machines that can be manufactured in workshops and change the balance of the battlefield. The “antidote” that everyone is looking for. After four years of war against Russia and thousands of Shahed drone attacks, Ukraine has ended up becoming the most advanced laboratory of the world to combat this type of weapons. What began as a desperate need to defend their cities has ended up generating a complete ecosystem defense: detection networks with radars and acoustic sensors, command software that coordinates cheap interceptors and specialized pilots who have learned to confront swarms of drones in real combat conditions. That experience has awakened a enormous international interest because it solves the big problem of modern defenses: destroying cheap drones with missiles that cost millions is an unsustainable equation. Changes the economics of air defense. It we have counted other times. The Ukrainian success is explained above all by cost. While a Patriot missile can exceed four million dollars and a THAAD interceptor is around twelve million, many kamikaze drones cost between 20,000 and 50,000 dollars. Ukraine has broken that logic using tiny interceptors that can cost between $1,000 and $2,500 and that, guided by human operators and thermal sensors or radar, pursue the enemy drone until it is destroyed. Systems like the Sting interceptor (small 3D printed devices capable of reaching speeds close to 280 kilometers per hour) have demonstrated surprising effectiveness in real combat, taking down a large part of the Shahed that attack cities like kyiv. From battlefield to global product. That performance has made Ukraine the center of a new technological career. Gulf countries, European countries and allies of the United States have started calling kyiv in search of solutions to confront the same Iranian drones that Russia has been using for years on the Ukrainian front. Middle Eastern governments, concerned about attacks on oil facilities or military bases, negotiate agreements to acquire interceptors, detection systems and operational training. They not only want to buy the drones, but learn the method Ukrainian: a distributed defense model based on thousands of cheap sensors and small weapons capable of quickly responding to massive attacks. A system to copy. The demand, furthermore, is not limited to hardware. Ukraine too export knowledge. Teams of Ukrainian specialists have already been sent to several countries to explain how to detect, track and shoot down drones in large numbers. In total, at least eleven governments have requested direct assistance to replicate this low-cost air defense model. For many Western militaries, the war in Ukraine has shown that defense against drone swarms is not won with large strategic systems, but with distributed networks of sensors, software and small weapons that operate in a coordinated manner. The great paradox. However, there is a fundamental problem. Despite international interest, Ukrainian companies can’t export their interceptors. The reason? The government has prohibited the sale of defense drones because it considers that all available systems should remain in the country. Manufacturers like Wild Hornets o SkyFall constantly receive purchase requests from the Middle East and Europe, but the official response is always the same: The absolute priority is to defend Ukrainian territory itself. Like the United States. The position reflects a very clear strategic logic. Ukraine faces massive drone attacks every night and needs every interceptor it produces. Selling them in the middle of the war would mean weakening their own defense. The decision, in fact, is reminiscent of what the United States has been doing repeatedly with key weaponry during intense conflicts (the latest: in South Korea): reserve or directly move the most necessary technologies for your own operations before exporting them. In this case, kyiv is applying exactly the same logic. War laboratory. Meanwhile, the war continues to turn Ukraine into the biggest testing ground of the new era of drone combat. The country has even created a specific branch of its armed forces dedicated to unmanned systems and is developing everything from robotic submarines to long-range attack drones. In cities like kyiv, national interceptors are already they demolish more than 70% of the Shahed that fly over the region. That experience, accumulated under constant attacks, is generating innovations that many Western armies have not yet managed to replicate. Pressure of a new war. The reason international interest is growing so quickly is easy to understand: the problem that Ukraine has been facing for years starts to spread to other regions. Iranian drones are now appearing in conflicts and attacks in the Middle Eastwhere the United States and its allies have discovered that their traditional air defense systems are too expensive to confront swarms of cheap drones. Each attack forces interceptors that cost millions to be fired against devices that are worth only a few thousand. Therefore, from US military bases to oil facilities in the Gulf, half the world andis looking towards Ukraine in search of answers. Its engineers, pilots and programmers have accumulated experience that no other army has. They have learned to fight swarms of drones with limited resources and to design cheap weapons that They break economic logic of modern air warfare. An antidote that stays at home. As they counted on TWZthe scenario is summarized in governments around the world calling to kyiv and asking for the “antidote” against the Shahed, while Ukraine has made a pragmatic decision: to keep it to itself. The companies receive offersallies ask questions and specialists travel to share experience. But the weapons that really make a difference right now, those cheap interceptors that have changed air defense, continue to stay at home, because for Ukraine the war is still it’s very far determine. Image … Read more

For Finland, protecting its roads in World War II was essential, so flying trees were invented

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In a war it is not only doing and being, but also appearing. We have already seen recently how Iran pretended to have parked fighters so that Israel wastes its missiles, but this trick of playing catch-up is older than gunpowder. In fact, in World War II the United States had until ‘Ghost Army’ who was dedicated to these tasks. Precisely within the framework of the second war on a planetary scale, this curious story of concealment of infrastructurewhich is run by Finland. Finland is a Nordic country located on the Scandinavian Peninsula, the easternmost of the triad made up of Norway, Sweden and Finland. That makes it have a border with Russia, only at that time it was the USSR. Its situation on the map made it fight three wars in three different positions: the Winter War where it was attacked by the Soviets, the Continuation War in which the USSR attacked it, taking advantage of the Nazis’ Operation Barbarossa and the Lapland Warin which he fought against Germany after signing his armistice with the USSR. The photo that illustrates the cover of this piece and that you can see in full immediately after this paragraph was taken by Osvald Hedenström and is preserved in the photographic archive of the Finnish Defense Forces, along with the legend written by the photographer: “The Finns have camouflaged the 10 km from the border on the Raatteen road with country roads, with fir trees that seem to hang in the air, because right on the border there is an observation tower erected by the Russians. Suomussalmi, Kuivajärvi 1941.06.27” Flying trees on the Raatteen road. Sa-Kuva The cheapest camouflage of World War II That is to say, the legend makes three facts clear: that there was camouflage that covered the 10 kilometers of road from the border, which included rural roads and the main highway, and that the threat was a Soviet observation tower right on the muga. As? With fir trees lying. The Finnish army was noticeably inferior to the Soviet one, so they took advantage of the terrain, explains Colonel Petteri Jouko, a military historian at the Finnish National Defense University. for Atlas Obscura: “The Finns did not have the funds to purchase large quantities of artificial camouflage, such as nets, they did use trees, leaves and foliage to confuse the enemy” Because Finland is also a country with exuberant nature: the density of its forests is around 75% of the territory. according to the FAOso discovering critical infrastructure for the movement of troops and supplies such as roads or railways was a piece of cake for the Soviets. Obviously this resource of camouflaged roads was only effective for sky-level observationbut not for reconnaissance aircraft. Trees laid to hide critical infrastructure. Sa-Kuva This camouflage technique was technically simple but arduous. The Finns cut down the pine trees near the roads and then suspended them with steel cables that they had tied to other trees at the ends, although they also used wooden poles. The result, as can be seen just above, in another photograph from the Finnish archive, is that it seemed that the trees were flying over the roads, which from a bird’s eye view appeared to be just another leafy forest. Currently, none of these tree structures have survived; the passage of time and the abandonment of these rural roads has condemned them to their disappearance. In Xataka | Ukraine has found the antidote to Russian kamikaze drones in World War II: an optical illusion worth 500 euros In Xataka | A secret Nazi bunker in Germany hides the most sought-after treasure on the entire planet: hundreds of tons of rare earths Cover and photographs | SA-kuva (Finnish Defense Forces photo archive)

This town in Spain went unnoticed until 1953. Then it decided to carry out the largest tourism experiment in the world

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In the middle of the 20th century the skyscrapers They were still a rarity outside of cities like New York or Chicago. In Europe they predominated the horizontal citieswith low-rise buildings and compact historic centers. However, in the middle of the 1950s, experimentation began with an urban idea that seemed almost futuristic for the time: concentrating thousands of homes and hotels in high towers to free up land, bring people closer to the sea and create cities capable of accommodating crowds without expanding uncontrollably throughout the territory. The town facing the sea. At that time Benidorm it was just a fishing village of the Alicante coast. Its economy revolved around the sea and, in particular, the tuna trap, while many families survived by combining fishing, agriculture and work in the merchant navy. That small town barely had more than a few thousand inhabitants and had the typical appearance of a mediterranean town: low houses, narrow streets and a life marked by the rhythm of the tides. However, the fishing crisis, the economic isolation of post-war Spain and the need to find new sources of income pushed the town to seek a different future. It was then that an almost unthinkable transformation began to take place: a humble enclave destined to become one of the most unique urban and tourist experiments in history. The vision that changed the destiny of the city. The great turning point came in the 1950s when Mayor Pedro Zaragoza perceived the potential tourist of that corner of the Costa Blanca. At a time when the Franco regime was trying to attract foreign currency and timidly open the country to the outside world, Benidorm opted for sun and beach tourism as an economic engine. The decision involved breaking with many conventions of the time, from allowing the use of bikini on the beaches (a scandal for conservative Spain) to designing an urban model specifically designed to accommodate thousands of foreign visitors. The municipality developed in 1956 one of the first general urban planning plans in the country, a tool more typical of large cities than a small coastal town. With that plan the metamorphosis began: the place that had lived off fishing for centuries began to be imagined as an international tourist city. Benidorm before the “plan” Grow towards the sky. The key to the urban model was an unusual decision on the Mediterranean coast: grow vertically. The 1963 planning practically eliminated height limits and allowed increasingly slender towers to be built on relatively small plots. The logic was simple and powerful. If the buildings rose towards the sky, the ground could be kept free for green areas, swimming pools, avenues and services. This approach turned Benidorm into a true laboratory of modern urban planning, indirectly inspired by the theories of architects. like Le Corbusier about vertical cities surrounded by open spaces. He first great symbol of that change came with buildings like the Frontalmar or the Coblanca 1 in the sixties, towers (or moles) that they broke completely the traditional scale of the town. Those constructions inaugurated a model that in a few decades would transform the city’s landscape. The hordes are coming. The airport opening of Alicante in 1967 and the expansion of European tour operators triggered the arrival of visitors. British tourism, especially, found Benidorm a cheap, sunny and accessible destination all year round. To accommodate this avalanche of tourists, dozens of increasingly taller hotels and apartment blocks were built. In a few decades, Benidorm’s skyline went from low houses to a forest of towers facing the sea. Today the city has more than a hundred of skyscrapers or, in other words, it is the second in the world with the highest density of tall buildings per inhabitant, only behind New York. Structures such as the Gran Hotel Bali, the Time or the future TM Tower (which will exceed 230 meters) symbolize that vertical race that turned the city into what many call the “Manhattan of the Mediterranean.” Criticized and admired. There is no doubt, the Benidorm model has been the subject of debate for decades. For some it is the perfect example of mass tourism and aggressive urbanization of the coastline. For others it is, paradoxically, one of the coastal developments more efficient of Europe. The concentration of high-rise buildings allows hundreds of thousands of visitors to be accommodated while occupying a relatively small area and reduces land consumption compared to extensive urbanization models with dispersed chalets and resorts. In addition, the city functions as a practically continuous destination throughout the year, with very high hotel occupancy levels even in winter. This spatial efficiency has led some architects and urban planners to consider Benidorm as an urban experiment so unique that, far from being a mistake, anticipated solutions that are discussed today in the debate on sustainability and urban density. From a town to a world tourist icon. The result of this entire process is a transformation that is difficult to imagine if you look at the starting point. In just a few decades Benidorm went from being a small fishing center to a city capable of receiving millions of visitors a year. Its stable population is around tens of thousands of inhabitants, but during the summer can multiply until approaching half a million people. He skyline of skyscrapersvisible from kilometers out to sea, has become an iconic image of Spanish tourism. What began as a risky bet in the 1950s ended up creating a urban and economic phenomenon unique: a place where an ancient Mediterranean town decided to reinvent itself looking up to the sky and ended up building his own Manhattan facing the sea. Perhaps that is why its story continues to provoke the same uncomfortable question: whether that was a brilliant urban planning intuition… or the experiment that forever changed the way of inhabiting the Mediterranean. Image | Javier Martin Espartosa, Double reed In Xataka | If the question is whether a skyscraper can be erased without demolishing it, … Read more

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