air

The US believed it had crushed Iran’s missile city. They have counted the complexes again, and it is as if they had shot in the air

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During the Gulf War, several American pilots returned convinced they had completely destroyed numerous Iraqi underground shelters. Days later, reconnaissance images revealed something disconcerting: Many of those complexes were still active because the explosions had barely blocked secondary entrances while the main infrastructure remained intact under tons of rock and concrete. The big surprise. For weeks, the White House presented the campaign against Iran as a crushing demonstration of modern military power: stealth bombers, precision missiles and coordinated attacks with Israel that had supposedly left the Iranian strategic network reduced to rubble. donald trump came to affirm that Tehran already “had nothing” in military terms and that its missiles had been dispersed and out of combat. However, the new secret evaluations US intelligence agencies describe a radically different and deeply uncomfortable scenario for Washington. After reanalyzing satellite images, underground access and logistical activity, American analysts discovered that Iran maintains operational 30 of its 33 complexes of missiles in the Strait of Hormuz and retains a good part of its mobile launchers and arsenals, in addition to having recovered the 90% access of its underground facilities. The feeling within some national security sectors is beginning to be disturbing: after spending thousands of missiles and selling the world the idea of ​​total destruction, the immense Iranian “missile city” remains practically where it was at the beginning. Architecture of a fortress. Here you have to remember something what do we count weeks ago. The real problem for the United States is not just how many missiles Iran retains, but how they were built and distributed their complexes for decades. Tehran turned entire mountains into underground defensive systemswith tunnels, protected warehouses, redundant access and mobile platforms capable of moving missiles from one point to another even after a bombing. Many installations were not designed to resist a specific attack, but to ensure that they always there will be something operational after any initial wave. That’s where the intelligence reports are causing real concern: Many of the entrances were temporarily sealed, but not completely destroyed, and the vast majority of the complexes they regained access operational in a matter of weeks. In some cases, the Iranians may even continue to launch missiles directly from the facilities themselves. The result is a very different image from the American public narrative: rather than eliminating the threat, Washington seems to have scratched the surface of an infrastructure conceived precisely to survive a war of technological attrition. The hidden price of the operation. The other great revelation of the conflict is not underground in Iran, but inside the own US arsenals. The campaign consumed gigantic amounts of advanced ammunition: more than a thousand stealth cruise missiles, around a thousand Tomahawks and more than 1,300 Patriot interceptors, figures that are equivalent to entire years of industrial production. The Pentagon attempted to balance two incompatible priorities: destroying extremely hardened Iranian complexes and, at the same time, do not empty completely its strategic reserves in the face of possible future crises with China or North Korea. This limitation explains part of the most controversial tactical decisions of the war. Rather spray completely many underground complexes, planners opted to seal access and entrances using fewer bunker buster bombs than necessary to destroy the entire facility. Now the consequences are beginning to appear starkly: it spent enormous amounts of high-end weapons, but the Iranian network continues to retain significant operational capacity. Hormuz as center of gravity. All of this takes on an even more delicate dimension due to where most of Iran’s surviving capacity is concentrated: the Strait of Hormuz. Approximately a fifth of the world’s oil circulates through that maritime strip, and US intelligence believes that Iran maintains enough missiles and launchers there to to continue threatening warships, oil tankers and critical infrastructure. The US Navy maintains a practically continuous presence in the area with more than twenty ships patrolling and holding the blockade, but the strategic reality is beginning to become uncomfortable: even after a gigantic military campaign, Washington has not been able to eliminate Iran’s ability to turn Hormuz into a nightmare for global trade. There is no doubt, this persistence completely alters the initial perception of the war. What seemed like a demonstration of technological supremacy is also beginning to look like a warning about the real limits of modern air power against deeply dispersed underground networks. The political contradiction. Ultimately, the conclusions of the intelligence “count” They are also opening an increasingly visible political rift in Washington. While the White House publicly insists that the operation was a historic success and accuses those who question that story of “virtual betrayal,” internal reports describe a enemy far away of being neutralized. And the contradiction threatens to become both a strategic and political problem. If the ceasefire collapses, Trump would have to decide between accepting that Iran retains a relevant military capability or relaunching an even more costly campaign using ammunition reserves that will most likely take years to recover. The dilemma is especially delicate because European allies They already fear delays in arms deliveries destined for Ukraine due to American industrial wear. The war against Iran was designed to demonstrate strength and restore deterrence, but what is beginning to emerge, however, is another, much more uncomfortable reading: that even the most powerful military machine on the planet may discover too late that destroying a “missile city” buried under mountains is much more difficult than announcing its destruction on television. Image | Iranian Media In Xataka | Suddenly, a military outpost sprouted up in the Iraq desert: it was Israel in its bombing campaign of Iran In Xataka | While everyone was looking at Hormuz, Russia has found a much more important route to supply drones to Iran

There are people who buy plants to purify the air in their home. The reality is that you are wasting your time

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When we want to give a little life to our homes, the first thing we think about is putting in several plants with the idea that, in addition to giving it a more natural touch, they will also clean the air we breathe. And it’s no wonder, because all you have to do is take a look around the internet or through the hallways of any nursery to find us. with the promise that pothos, mother-in-law’s tongue or ribbon are “natural purifiers” that eliminate toxins. But It’s not like that. The origin of the idea. To understand why we blindly believe in the purifying power of the plants that we can have in our home, the responsibility lies with NASA and its classic studies published in the 80s. Here, in their quest to find ways to clean the air on space stations, researchers placed different plants in hermetically sealed chambers and injected volatile organic compounds that were partly removed by the plants. This was very relevant, but the extrapolation to the general population, not so much. And these investigations were carried out in an airtight chamber in a laboratory, and at the moment a home or an office is not hermetically closed, but there is the possibility of air constantly entering and leaving through windows, doors or cracks. But this detail has not resonated so much with the population. A bath of reality. This arrived in 2019, where a study from Drexel University analyzed a dozen previous studies to evaluate actual plant performance using a standard metric: the clean air delivery rate, or CADR. Here the conclusion reached is that potted plants do not improve indoor air quality in a relevant way. And the explanation is purely mechanical, since the normal ventilation of any building eliminates volatile organic compounds at a rate faster than the absorption capacity of an indoor plant. Size matters. With this premise, for the plants to match the purification achieved by the ventilation system of a standard building or the simple act of opening windows, you would need between 10 and 1,000 plants per square meter. I mean, you would have to literally turn your living room into a dense, impassable rainforest to notice the difference. Very controlled exceptions. This does not mean that all pro-plant studies lie, but rather that context is everything, since some studies point to a decrease in CO₂ levels. A notable example is a study conducted in a school in Portugal, where flower pots were introduced into classrooms and an improvement in the air was measured. However, the scientists themselves warn that these are highly specific and controlled environments and their results cannot be mathematically extrapolated to what happens in the living room of a normal apartment or in a standard office. There is no evidence. Given all this that we already know, the authorities are sharp noting that there is no evidence that a reasonable number of indoor plants remove significant amounts of pollutants in homes and offices. What do we have to do? In order to improve air quality inside the home, the important thing here is to reduce the use of chemicals and avoid smoking indoors. In addition, opening the windows every day to renew the air is the key measure, as well as the installation of air purifiers, which are almost mandatory in many cases for people who have significant allergies. Images | freepik In Xataka | The countries that pollute the most in the world, gathered in a detailed graph

The United Kingdom has just activated an unprecedented air mission over a lost island in the Atlantic. There is a hantavirus suspect

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In 1961, a nurse had to be urgently evacuated from Tristan da Cunha after a volcanic eruption forced completely vacate to the entire population of the remote island. For weeks, that small territory lost in the middle of the Atlantic remembered something that remains true today: when an emergency occurs there, arriving on time can become an extremely complicated operation even for a country like the United Kingdom. The forgotten island of the Atlantic. While dozens of passengers from the MV Hondius cruise They began to disembark in Tenerife between health checks and repatriation flights for a hantavirus outbreakmuch further south and far from the cameras, the United Kingdom has started an operation completely different on an island that almost no one would know how to locate on a map. Tristan da Cunha, considered the most remote inhabited island on the planet, has suddenly become the scene of a unprecedented air mission for British forces after a british citizen showed symptoms compatible with hantavirus after leaving MV Hondius. With just 221 inhabitants, no airport and almost a week by boat from the nearest major port in South Africa, the island was caught in an extremely delicate situation when oxygen reserves began to run out and the small local medical system found itself unable to face the risk of contagion and isolation alone. An unprecedented military mission. The British response was as extraordinary as the place where he was to be executed. The Royal Air Force mobilized an Airbus A400M Atlas from RAF Brize Norton accompanied by a Voyager tanker plane to carry paratroopers, doctors and tons of medical supplies to the middle of the Atlantic. There was no possible landing strip, so the United Kingdom took a unprecedented decision: drop military doctors by parachute over the island. Six members of the 16 Air Assault Brigade They jumped alongside a doctor and an intensive care nurse in an extremely complex operation marked by strong winds and a minimal margin for error. The jump was made practically over the ocean before to correct the trajectory towards the island, with the real risk of ending up falling directly into the Atlantic if something went wrong. Never before have British forces deployed medical personnel by parachute drop on a humanitarian mission of this type. Medical supplies were dropped on the remote island, which has no landing strip and has a population of just 221. The cruise ship that took the problem to the middle of the ocean. It all began weeks before aboard the MV Hondius, the expedition cruise ship that was sailing through the South Atlantic when it appeared a hantavirus outbreak which would end up leaving several dead and multiple confirmed cases. The case has been of particular concern because the identified variant belonged to the Andean strain, one of the few capable of be transmitted between people. Apparently, the British citizen who ended up isolated in Tristan da Cunha had abandoned ship mid April and began to develop symptoms days later on an island that, as we said, does not have advanced hospital capacity and is normally cared for by just two medical professionals. While some passengers were treated in the Netherlands or South Africa and others were isolated in the United Kingdom After returning from Tenerife, the British health authorities quickly understood that the real problem was no longer on the cruise ship, but in that small isolated community in the middle of the ocean where any worsening could turn into a emergency impossible to manage with conventional means. Geography as a threat. Plus: the operation revealed the extent to which geography continues to condition even to countries with enormous military capabilities. Tristan da Cunha has no airport, no regular air routes and its sea connections are extremely slow and limited. Simply evacuating paratroopers and medics after the mission will require a complex maritime operation carefully planned due to health risk. I was counting a few hours ago BBC that the jump was not made over a large open space either, but rather over a small island buffeted by winds that usually exceed 40 kilometers per hour. The soldiers, in fact, ended up landing at the local golf course while the island’s inhabitants improvised receiving medical equipment and unloading more than three tons of supplies for the hospital. All this to contain a possible contagion in a territory where any logistical failure can take days to correct. The unknown Atlantic. If you will, history also reveals an uncomfortable reality about major modern health and geopolitical crises: almost all the attention tends to be focused on in visible places and connected while huge peripheral spaces remain out of focus until an emergency breaks out. Thus, while the media focus has followed the arrival of the cruise ship to the Canary Islands minute by minute, the hantavirus has ended up activating parachute dropsmilitary doctors and extreme logistical operations on Tristan da Cunha, a place so remote that even a relatively small health emergency forced resources to be mobilized normally associated with war scenarios or major catastrophes. Image | Ministry of Defense In Xataka | It is not so contagious, but it is very lethal: in Argentina the hantavirus went from 17% to 33% in the blink of an eye In Xataka | We believed that hantavirus did not jump between humans. Until someone went to a birthday party in Argentina

Fitbit Air, features, price and technical sheet

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Fitbit seemed to have remained in the background within the Google ecosystem, almost like a brand that remained there by inertia while the prominence fell to the PixelWatch. Now come back with Fitbit Aira simple and light bracelet, which points just in the opposite direction to that of many smart watches: fewer visible functions, less complications and a more contained price. The paradox is that this return of hardware also comes with a less obvious reading: the brand, loved by many users, is beginning to become increasingly diluted within the search giant. It is not just any release within the Google catalog. The Fitbit Air is Fitbit’s first hardware device in almost four years, so its arrival could be read as a small resurrection for the brand. But the entire movement points in another direction. Google bought Fitbit a few years ago for $2.1 billion and, since then, it has been bringing this technology increasingly closer to its own ecosystem. Now the step is even more visible: Google is already presenting the old Fitbit app under the name Google Health, a step that reveals part of its strategy. Fitbit Air technical sheet Fitbit Air dimensions and weight Length: 34.9mm Width: 17mm height: 8.3mm 5.2g without strap 12g with strap Memory Saves 7 days of detailed minute-by-minute motion data. Save 1 day of training data Save daily totals for the last 30 days Stores heart rate data in 2 second intervals battery and charging Up to 7 days of autonomy Lithium polymer battery Charge from 0 to 100% in 90 minutes connectivity Bluetooth 5.0 sensors Optical heart rate monitor Three-axis accelerometer Red and infrared sensors to monitor oxygen saturation (SpO2) On-device temperature sensor (skin temperature variation available in the Google Health app) vibration motor Endurance Water resistant up to 50 meters. colors Obsidian, mist gray, raspberry, lavender price From 99.99 euros A simple bracelet for a much more ambitious strategy Fitbit Air is quick to understand because it doesn’t try to do everything. It has no screen, it has no buttons and you don’t want to become another device to look at every few minutes. The idea is simpler: you put it on, wear it during the day or at night and let it record activity, sleep and some health metrics without asking you too much attention. We are looking at a product that weighs 12 grams with the strap and 5.2 grams without it, so Google’s promise seems to go in the direction of having more functions in sight as well as wearing something comfortable that almost disappears on the wrist. That simplicity doesn’t mean that the Fitbit Air arrives empty inside. It incorporates an optical heart rate sensor, gyroscope, accelerometer, blood oxygen sensor and skin temperature sensor for sleep monitoring. It also withstands immersion up to 50 meters and promises seven days of battery life on a charge, plus one day of use with five minutes plugged in. Another important detail is that it can work simultaneously with a Pixel Watch. So it doesn’t seem designed for you if you just want to respond to messages, receive notifications, or have a screen full of data on your wrist. That’s what smart watches are already for. But if you are looking for a simple way to measure your activity, your rest and some health signals without getting too complicated, Fitbit Air may be an option to consider. It also fits if you already have a Pixel Watch and prefer to leave the watch for the day, but wear something lighter to sleep or train. The other big change you will not notice on your wrist, but on your mobile. If you used Fitbit as a reference application, as we pointed out above, that space is renamed Google Health. Google’s idea is to bring together health monitoring, wellness data and personalized coaching, all in one place. The change also involves integrating Health Connect, the Android layer designed to organize health data between applications. On paper, it may seem like just a name change, but it says a lot about what’s happening: Fitbit continues to appear on the band, while the daily experience begins to move more and more towards Google. The subscription layer also changes location. Google explains that Fitbit Premium becomes Google Health Premium. This is where the most ambitious features come in, such as the personal health coach integrated with Gemini, plans that adapt to progress, rest and recovery, or the possibility of receiving more personalized information on well-being. Price and availability of Google Fitbit Air in Spain Google Fitbit Air can now be reserved in Spain from 99.99 euros. The device also includes a three-month trial of Google Health Premium for new members, with subsequent automatic renewal for 8.99 euros per month if not canceled. The colors and finishes available are the following: Obsidianwith matte black stainless steel buckle Fog graywith polished silver stainless steel buckle Raspberrywith polished champagne gold stainless steel buckle Lavenderwith polished silver stainless steel buckle Images | Google In Xataka | A Chinese company has created AI glasses without a camera. Their message is very simple: they are not spying on you.

Now we know that the Iranian Air Force did to the US what Ukraine could not do to Russia with drones: an abysmal hole

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During the Vietnam War, American commanders discovered that some of their most protected bases they could be hit unexpectedly due to coordinated attacks low costforcing to reinforce defenses that until then were considered sufficient and making it clear that, in war, the feeling of security is usually more fragile than it seems. The blow that no one expected. For decades, the US military architecture in the Middle East relied on in a network of bases designed to surround and contain Iran, a direct heir to the Cold War doctrine and designed to project power quickly. However, a report that came to light this weekend on NBC News has revealed a radical inversion of that logic in the war of 2026: what was supposed to be a shield has become a set of exposed objectives, hit in a coordinated manner by Iranian attacks that hit more than a hundred targets in several countries. We are talking about critical infrastructures such as runways, radars, hangars, command centers or defense systems were damaged or destroyed, and the impact was neither marginal nor symbolic, but structuralaffecting the very functioning of the US deployment in the region. The fence that ended up surrounded. The system of bases in Kuwait, Qatar, Bahrain, the Emirates or Saudi Arabia was designed to suffocate Iran, but its ability to attack key logistics nodes turned the equation around. How much? It appears that critical facilities were left disabled or evacuatedincluding the headquarters of the Fifth Fleet in Bahrainwhile multiple bases in Iraq and Kuwait had to be abandoned or rendered inoperative. The pressure was such that even the resupply became problematicleaving the American forces themselves in a position close to the siege they intended to impose. The encirclement strategy, which seemed unquestionable for decades, suddenly showed its fragility in the face of an adversary with saturation capacity through missiles, drones and aviation. The hole that changes war. What is most revealing is not only the extent of the damage, but what they represent for Washington: for the first time in years, a rival has managed to systematically drill US military infrastructure at multiple points at once. Iran not only hit bases, but achieved something that until now seemed beyond the reach of other recent conflicts: opening a deep and sustained hole in the defensive framework of the United States, affecting radarsair defenses and strategic assets. That ability to simultaneously degrade multiple layers of the system is reminiscent of what other actors have tried unsuccessfully in wars like the one in Ukraine, but here it translated in real effects on the ground, altering the operational balance and forcing us to rethink the assumed superiority. From control to operational chaos. The middle counted American that the intensity of the attacks and the speed with which they occurred generated a scenario of disorganization that overwhelmed the usual command and control mechanisms. Bases evacuatedemergency relocated personnel and even improvised situations what do we countsuch as the use of civil infrastructure, reflect the extent to which operational pressure broke the planned patterns. Plus: the inability to anticipate and managing the real scope of the attacks, added to the lack of clear communication about the damage, fueled the perception of an overwhelmed response to a type of more distributed warfaster and harder to contain. A cost beyond money. Although initial estimates speak of billions dollars in repairs (not counting advanced systems or unrecoverable equipment), the true impact possibly transcends the economic. What has been affected is the military deployment model itself: the idea that a network of advanced bases guarantees regional control. In other words, the war has shown that, faced with an adversary capable of to attack in depth with means relatively accessiblethis hitherto untouchable network may become a rather critical vulnerability. The result in the pavement American is not only a balance sheet of damages, but a strategic warning that forces us to give more than one turn to its scheme of how military power is projected in a world where distance is already does not protect the same. Image | x In Xataka | If the war resumes again, the US runs a risk unprecedented in the history of war: that the only one with missiles will be Iran. In Xataka | If the question is why the US attacked an Iranian ship with a weapon unprecedented in 40 years, we already know the answer: a “gift from China”

China already knows how to keep a fleet of drones in the air indefinitely. The problem is that there are too many problems

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Wireless charging in everyday devices It is a resource that provides comfort. In other areas, wireless and remote charging implies a much more powerful advantage: supremacy over a rival. That is precisely what China is testing, how to maintain a drone fleet flying almost indefinitely thanks to a microwave charge injected from a ground system. And they are not the only ones. In short. A few days ago, Chinese scientists from Xidian University published a peer-reviewed article in the journal Aeronautical Science & Technology in which they presented a system microwave emitter that could send energy to an array of antennas installed on the top of a drone to charge the vehicle’s battery in mid-flight. The most important thing is that it works while the ground vehicle and the drone are moving, which eliminates the need for a stationary charge that would make no sense from a strategic point of view. Image of Xidian University How it works. For the system to work, and as we read in SCMPthe researchers integrated a GPS positioning system that allowed a drone and a ground vehicle to be aligned. On the ground there is the microwave emitter and the drone has a series of antennas at the bottom that collect the energy. In tests, the system kept fixed-wing drones in the air for up to 3.1 hours at an altitude of 15 meters. The great challenge was maintaining the alignment between the drone and the ground vehicle to maximize the load, but once the obstacle with the GPS system was overcome, the drone can stay in the air depending only on the vehicle’s fuel. On the other hand, we are approaching it from the point of view of indefinite autonomy, but such a system would also allow drones to have less battery (which, in the end, adds weight) and have more carrying capacity. The BIG asterisk. Defense analysts liken it to a “land-based aircraft carrier” in which an armored vehicle on the ground is both the command and power node, monitoring, charging and providing logistical support to the drones in a manner similar to that of a aircraft carrier It is the lifeline of manned fighters. However, the system has a huge problem: it is extremely inefficient. The Xidian team estimates that the efficiency of the microwave ‘cannon’ is between 3 and 5%. It’s… ridiculous, which means that the vast majority of the energy emitted is simply wasted. Why not a laser? It’s the big question. A laser system is more precise and has a longer range, which opens the doors to other types of missions. However, being a beam of light and not directly the energy that we launch, the laser is very sensitive to interference such as fog and dust. Also, think of the laser as a precision rifle and the microwave as a shotgun: any turbulence or bump in the road would affect the beam, but microwave energy has a wider range of action. China is not alone. Chinese analysts point out that it is a promising concept, but also something that is very far from being able to be applied to satisfy an immediate operational need. What it is, is one more step to find that way to get those drones that are appearing to be a very valuable element on the battlefield, as the wars in Ukraine and Iran, unfortunately, are demonstrating. The advance is important because Xidian has time working in the theoretical framework of the technology, but it is now that they have carried out a successful field test. Now, they are not alone, since the American agency DARPA is experimenting with radio frequency and laser to charge drones remotely, and in Germany, Rheinmetall is also developing wireless charging platforms for unmanned ground vehicles, although in this case, the drones are perched on a platform. In Xataka | Sending electricity without cables seemed like a thing of the future. DARPA has done it again, and the test has turned out better than expected

The latest MacBook Air drops in price, the perfect eReader for reading on the subway is on sale, sales on consoles and more. Hunting Bargains

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There is little left to close the month of April and so far we have been seeing very good offers on all types of devices, especially on Nintendo Switch 2 and some Apple phones and computers. Do you want to know what the best deals are right now? These are the ones we have been finding throughout the week and that are still available. MacBook Air M5 by 1,099 eurosthe latest Air laptop launched by Apple with a good storage configuration. nintendo switch 2 by 469 eurosa pack that includes ‘Pokémon Pokopia’ and a keychain. Kobo Clara BW by 129 eurosthe ideal e-book reader for reading away from home due to its quality and size. Poco X8 Pro 5G by 263.97 eurosan economical mobile phone with a very large battery. Atari 7800+ by 66.90 eurosa retro console that is compatible with the original cartridges. Nintendo Switch 2 + Pokémon Pokopia + keychain The price could vary. We earn commission from these links MacBook Air M5 If this week there is a notable offer in the Apple brand, it is the one from the MacBook Air M5 because its price has dropped to 1,099 euros. This is the configuration of 512GB storagecomes with the M5 chip to ensure good power and excellent performance and is perfect if you want it to study or even work, whether at home or away thanks to its 13.6-inch diagonal, its thickness or its weight of 1.23 kg. MacBook Air M5 (512GB) – 13.6 inches The price could vary. We earn commission from these links nintendo switch 2 MediaMarkt has launched what is one of the best promotions of the nintendo switch 2. By 469 euroswhich is what the console costs by itself, you get it as a gift ‘Pokémon Pokopia‘ (physical edition, game key card) along with a keychain of… yes, ‘Mario Kart World’. It is the same keychain from the previous pack that included said video game. The offer will be available until April 28 unless units are sold out before. Nintendo Switch 2 + Pokémon Pokopia + keychain The price could vary. We earn commission from these links Kobo Clara BW Several stores, including MediaMarkt, have lowered the price of Kobo Clara BW until the 129 euros. It is one of the eReaders with the best quality-price ratio on the market and is ideal if what you are looking for is to read at home and away from home. Because? Comes with a screen E Ink Letter 1300 six inches, so it maintains the good quality of this type of screen and a compact format so that it is comfortable to carry. Its performance is very good and it is waterproof, so you can use it next to a pool in summer. The price could vary. We earn commission from these links Poco X8 Pro 5G Do you want to renew your mobile? Well, be careful because AliExpress has 263.97 euros he Poco X8 Pro 5G. He is the younger brother of his generation who stands out among other things for his great 6,500 mAh battery with 100W fast charging, so it will give you a good autonomy of approximately two days. It also comes with the Dimensity 8500 Ultra processor and HyperOS operating system. Poco X8 Pro 5G (256 GB) – European version The price could vary. We earn commission from these links Atari 7800+ The Atari 7800+ It is a particularly interesting retro console because it is compatible with original cartridges. Its price right now is 66.90 euros and, although it is true that the design has been maintained quite faithfully, it includes certain improvements to have a better experience, such as an HDMI port and options to choose between several resolutions. The price could vary. We earn commission from these links Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Image | Apple, Nintendo, Rakuten Kobo, Xiaomi, Atari In Xataka | The best mobile phones (2026), we have tested them and here are their analyzes In Xataka | Best electronic book readers (e-readers) in quality price. Which one to buy based on use and five recommended models

Belgrade’s “liquid trees” are the fascinating biotechnological solution to clean the air in cities

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Today, the city of Belgrade has a significant problem in terms of air quality, which is already something quite typical of large cities. The situation here, the truth is, is quite critical, with some areas where the limits recommended by the WHO are exceeded by up to 5 times, and to solve it, the idea that we can have in mind is need to plant more treesbut the reality is that there is little space available to plant them, so they have had to choose to install what they have called liquid trees. The solution. Under the name of LIQUID 3this project has been operating since 2021 in front of the Stari Grad City Hall in the Serbian capital, and to the surprise of many it is not shaped like a tree, but is a simple glass tank that is filled with 600 liters of water inhabited by local microalgae. But just because it doesn’t have the shape of a tree doesn’t mean it doesn’t work as such, since it literally uses photosynthesis to absorb carbon dioxide from the environment and release pure oxygen into the environment, and the truth is that they are very efficient, since a single tank of LIQUID3 is equivalent to the absorption capacity of two 10-year-old trees or 200 square meters of grass. How is it possible? That a simple tank surpasses an adult tree when it comes to ‘purifying’ the air, the truth is that it seems strange, but biotechnology has achieved something incredible. Specifically, science has seen how microalgae have the ability to capture carbon dioxide and fix it between 10 and 50 times faster than land plants under controlled conditions. In fact, studies indicate that these algae can fix approximately 1.8 grams of CO₂ for every gram of biomass generated, achieving CO₂ removal efficiencies close to 50%. And designed for the city. Being in the center of a city is not easy, and that is why scientists have had to use strains of Serbian freshwater microalgae that grow with simple tap water and withstand extreme temperature fluctuations. And here the research indicates that these species are ready for the most hostile environments. And another positive point they have is that they hardly require maintenance, since it is limited to the fact that the biomass generated must be extracted every month and a half, and in addition, water and fresh minerals are added. The positive here is also that biomass can be used as a great natural fertilizer. More than a lung. The LIQUID3 is not just a laboratory experiment that has taken to the streets, but has been designed as multifunctional urban furniture, since, in addition to purifying the air, the structure functions as a bench to sit on and even adds solar panels to charge your cell phone or provide night lighting. It is not definitive. Although it seems incredible, the truth is that we must put our feet on the ground in the face of technological enthusiasm. Although right now the figures are very good, there is still a lack of studies that can validate the impact it has in the long term and measure whether they are really giving good results, and above all that they are real. But the most important nuance here is that these systems do not replace traditional trees or forests, which logically must remain where they are and promoting their implementation. In this way, we are left with the fact that this technology has been designed for dense and highly polluted urban areas where traditional planting is logistically impossible. Where the asphalt does not give an inch to the roots, the liquid trees rise like a high-tech green oasis, giving the city’s lungs a break. Images | LIQUID3 In Xataka | Tell me where you live and I’ll tell you how healthy your tap water is: the map of Spain that analyzes each municipality

Vueling and Wizz Air cut ground in El Prat

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The pulse between Ryanair and Aena due to the increase in airport taxes has made the airline withdraw millions of places in a good part of the regional airports of Spain. This summer too movement is coming In this regard, a maneuver that Ryanair is using to put pressure on the airport operator. This conflict It is going really well for the competition of the Irish airline. The last one was at El Prat airport, Barcelona, ​​where the reduction of seats by Ryanair is leaving room for other airlines to take over. Why is this happening? Ryanair has been engaged in an open battle with Aena for months over the price of the taxes that airlines pay to operate at Spanish airports. As a measure of pressure, Michael O’Leary’s company has been cutting flights and routes at different airports in the country. El Prat is no exception, and just as they count Since Expansión, in the first quarter of 2026 Ryanair transported 5% fewer passengers than in the same period of the previous year, remaining below two million travelers. Its market share fell to 15.9%, almost one and a half points less than in 2025. Who wins with it. The big beneficiaries are Vueling and Wizz Air. The low-cost of the IAG group touched five million passengers between January and March, 3.9% more than a year before, consolidating a market share that already exceeds 40%. On the other hand, Wizz Air increased its traffic by 25.7% to close to 766,000 travelers, taking advantage of both the void left by Ryanair and its own expansion on routes to Central Europe and now also to London. Ambition. In January, Vueling presented a strategic plan that contemplates investments of 5,000 million euros to reach 60 million annual passengers, double its current volume. Half of this growth, according to the company, will be generated precisely in Barcelona. Wizz Air also intends to continue pushing, as it has already announced a 32% increase in its seat offer for this year’s high season in El Prat. The airport. El Prat has been operating at the limit of its capacity for years. Just like they count According to El Economista, in 2025 it exceeded its theoretical ceiling of 55 million by more than two million passengers. Lluís Sala, vice president of the College of Aeronautical Engineers in Catalonia, explained that “it is normal for the map to not be modified when the infrastructure is at maximum capacity.” With such a congested airport, any step back by one airline is an immediate opportunity for the rest. There are agreed expansion works (3,000 million euros agreed in June 2025 between the Generalitat, the Government and Aena), but for the moment growth is achieved by squeezing the time slots with less demand. And now what. The question is whether Ryanair’s withdrawal is temporary or if it will go further. For now, the dispute with Aena has no signs of being resolved soon. Meanwhile, El Prat as a whole continues to grow, with 4% more traffic in the first quarter, and is heading for a new annual record. In Xataka | The airlines had been warning for weeks and the consequences are already here: Volotea will charge 14 euros more for the Hormuz crisis

Ukraine has turned Russia into a fearsome air force

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In 1991, during the Gulf War, the United States discovered something uncomfortable: despite its total air superiority, it could not prevent Iraq from continuing to launch scud missiles from mobile platforms that appeared and disappeared in the desert. That frustration left a clear lesson For military strategists: in modern warfare, it is not enough to dominate the air, you must constantly adapt to an enemy that also learns. From questioned strength to real threat. During the first stages of the invasion of Ukraine, Russian aviation was perceived like a disappointment unable to achieve air superiority, which led many Western analysts to perhaps hastily underestimate it. However, with the passage of time, that vision has started to change disturbingly, especially in Europe, where aviation security experts have focused on something that is no longer an intuition: that the conflict has not weakened Russia, but rather the has forced to learn. Accumulated experience, system improvements and tactical adaptation have transformed a force that seemed limited into a much more dangerous and credible actor than it was before 2022. War as a laboratory. They remembered on Insider that, far from collapsing, Russian aviation has used Ukraine as a real training environment where pilots and crews have gained experience in high-intensity combat. Although it has lost aircraft, it has retained a large part of its qualified personnel and has compensated for those losses with sustained production of new aircraft, which has allowed it to maintain and even expand its fleet. This process has corrected one of its greatest historical weaknesses, the lack of flight hours, turning its pilots into more prepared fighters for complex scenarios. More reach, less risk. One of the most significant changes has been the evolution of his attack capacitywhich now increasingly relies on long-range weapons and systems that allow you to hit without directly exposing yourself. We are talking about advanced missiles, gliding bombs and remote attacks that have reduced the need to penetrate defended airspace, greatly complicating the enemy response. This way of fighting has not only proven to be effective in Ukraine, but also poses a worrying scenario. for future conflictswhere control of the air no longer depends solely on physically dominating it. Constant pressure from the air. They counted on ukrainian media that, in parallel, Russia has intensified its air campaign with massive and increasingly sophisticated use of drones and missiles, launching thousands of devices and perfecting saturation tactics to overwhelm defenses. Coordinated attacks, changes in flight patterns and the combination of different types of weapons have made it possible to maintain continuous pressure on infrastructure and the civilian population, generating not only material but also psychological wear. This strategy turns air into space permanent threatwhere the defense can never relax. A more complex threat. If you will, the result is a Russian air force that, although it still has structural limitations and does not match NATO in a direct confrontation, has become much scariest and most difficult to counteract. The combination of strengthened air defense, better coordination between systems and a more adaptive doctrine presents a scenario for its enemies in which achieving air superiority will be much more expensive and risky. In other words, a paradox has developed and is beginning to take hold, one where Ukraine has not only resisted Russian aviation, but, by forcing it to evolve, has contributed to turning it into a more sophisticated and persistent threat to the European military balance. Image | Alan Wilsonparfaits In Xataka | If fog was deadly in Ukraine’s winter, spring is offering Russia a key advantage: greenery In Xataka | Ukraine is close to what no one has achieved in a war: shooting down missiles for less than a million dollars

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