solve

OpenAI’s big problem all these years has been a chronic lack of definition. Now he wants to solve it with a super app

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OpenAI spent much of 2025 announcing new features, not new models (that also), but new products. We saw him with his Sora 2 video generator or with ChatGPT Atlas browser. Now, the company recognizes that they were diversifying too much and their plan is… to launch another app. The super app. They have an exclusive Wall Street Journal that OpenAI is preparing a desktop tool that will unify the ChatGPT app, its Codex code platform and the Atlas browser. This super app will offer agentic capabilities, not only oriented to code, but also to productivity. This is aiming directly at the business field, a field in which its rival, Anthropic is quite ahead of him. Too many products. The company’s goal with this move is to simplify the experience and reduce fragmentation between products. Speaking to the Wall Street Journal, a company spokesperson assures that it will allow them to unify the different teams, which will be able to focus their efforts on one product instead of several. In an internal note, OpenAI explicitly acknowledges that they were spreading their efforts across too many apps and needed to simplify them. The change will be led by Fidji Simo, the head of apps at OpenAI, who recently brought the employees together to give them a message: “We cannot waste this moment because we are distracted by parallel projects.” And diversifying consumes many resources, both economic and computing capacity, and OpenAI is not to be wasted none of them. Without direction. OpenAI has the most used chatbot in the world, but what they don’t have is a clear product strategy. They have wanted to be too many things at once without a clear strategyand in addition, half-abandoned products have been left along the way. The Atlas browser is the best example of this. I had all the potential to be a serious alternative to Chrome which had not yet integrated Gemini. The reality is that, five months after its launch, ChatGPT Atlas is still exclusive for Mac and also has lost functions. Something similar happened with Sora 2: they got the viral moment they were looking for, but today the app remains exclusive for users in the US and Canada. Competition where it hurts most. While OpenAI launched its video memes or its browser, the competition moved forward with a much less flashy, but better thought-out plan. According to a Menlo Ventures reportin 2023 OpenAI had a 50% share in the enterprise segment, while Anthropic had only 12. In 2025 the tables turned: Anthropic had 32% and ChatGPT 25%. If we focus only on programmers, 42% prefer Claude and only 21% ChatGPT. ChatGPT still has many more users, but the vast majority are for personal use. Financially, business users are much more valuable because they have no qualms about paying for subscriptions that often exceed $200 per month. Image crisis. In case Anthropic was not eating enough toast, the image crisis caused by the agreement with the Pentagon. ChatGPT began to lose users at a worrying ratewhile Claude was placed in the top of most downloaded applications. What they were missing. Image | Amparo Babiloni, Xataka In Xataka | There was a time when ChatGPT was a magical and free tool. That time is about to end

Ships have been damaging the oceans with noise for centuries. Germany is working on silent propellers to solve it

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Every time a boat crosses the seas, it is accompanied by a continuous noise underwater: that of the propellers that propel it. The noise problem of propellers in marine ecosystems is identified academically since 2004, but its reason for being is even older: the first time they analyzed its cause It was in 1893. What there is no solution to that disturbing low-frequency sound that spreads for kilometers, disturbing fish, cetaceans and other marine living beings. And its reason for being is even older: the first time cavitation was analyzed was in 1893. A team from the Kiel University of Applied Sciences has set out to remedy it with its project MinKav. Brief notes on cavitation. To understand the problem, we must first see what happens to the blades of a propeller when they rotate at high speed. With their movement, the blades generate a pressure difference between their faces. Thus, on the back side the pressure drops so much that the water changes state, going from liquid to gas. More specifically, thousands of small vapor bubbles. The problem is when these bubbles leave that low pressure zone: they then implode violently, returning to the liquid state, which causes pressure waves that are transmitted at high speed through the water. If the waves collide with a surface, they can deteriorate it considerably. The phenomenon of cavitation is accompanied by vibration and noise, as if it were gravel falling on a machine. This sound is broadband, with low frequency components capable of traveling long distances. Why is it important. Of all possible aquatic pollution, human-caused acoustics are the least mainstream, but their effects are documented. A couple of concrete examples of the importance of sound for aquatic species: whales They use sound to communicate, orient themselves and huntthe fish for such essential tasks how to detect predators or spawning and crustaceans are sensitive to vibration in the background. To get an idea of ​​the magnitude of the problem, according to the International Chamber of Navigation There are approximately 50,000 merchant ships operating continuously around the planet and they all emit that sound. It is not something specific. And the research team adds a twist: a propeller with less cavitation is not only less noisy, it can also potentially be more efficient (cavitation is wasted mechanical energy). Less noise and fewer emissions. The discovery. The HAW Kiel team has identified when the problem originates: the sound peak does not occur when the bubble forms, but right at the end of the collapse. And its intensity depends directly on the speed at which this collapse occurs. The faster you go, the stronger the blow. Illustration of human, marine animal and environmental sound sources in the marine environment, with proportional sound waves. National Office of Oceanic and Atmospheric Administration How are they doing it. The experiments are being carried out at the Naval Hydrodynamics Laboratory of the German university, in a kind of aquarium with a miniature propeller, so that they can reproduce the flow conditions around the propeller. Equipped with underwater microphones and high-speed cameras, they have determined where and when that noise peak occurs. The next step is computer simulations to experiment with designing different propeller geometries to reduce noise without sacrificing performance, efficiency or durability. The most obvious solution, lowering the rpm, is not an option: a commercial boat cannot afford to go slower. Pending subjects. However, MinKav started in January of this year, will last three years and have a budget of 390,000 euros, modest for a problem of global scale. Even if MinKav were to come to fruition, it would have to go from the laboratory to scale-up on a commercial ship. In Xataka | A Spaniard has patented a mast that transforms wind and waves into electricity: his invention challenges diesel in boats In Xataka | A “roomba” to clean rivers: the ship that the Three Gorges Dam has launched in China Cover | Pexels

a clash of moons 100 million ago wants to solve it

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Few planets in the Solar system are as recognizable as Saturn and its characteristic rings. They may not be as visible to the naked eye, but around them there are also an impressive 274 moons. Well, according to a recent study from the SETI Instituterings and moons could be linked by the same event: a colossal collision 100 million years ago that left Saturn’s environment as we know it. Context. The first time we approached Saturn was in 1979 with NASA’s Pioneer 11. A few years later, Voyagers 1 and 2 flew over it. It was the probe cassini on a 13-year mission that shed some light on this planet, its rings and its moons. Cassini discovered three anomalies that did not fit the models proposed by astronomy: The rings are about 100 million years old, much younger than the billions they expected (friendly reminder: The solar system is 4.6 billion years old) Several moons had strange, asymmetrical and unbalanced orbits. Saturn’s internal mass is more concentrated in the center than predicted. The previous hypothesis. In 2022 a team of astronomy professionals established a hypothesis to explain these anomalies: the explanation could be that Saturn had lost a moon about 100 million years ago, precisely the date on which the youngest rings were formed. The discovery. Based on the previous hypothesis and after several simulations, they arrived at the explanation that where Titan orbits today there were two moons: a Proto-Titan and a smaller Proto-Hypérion. At some point they collided and the Proto-Titan absorbed the other. What was not integrated was regrouped forming the current deformed and asymmetrical Hipérion. This process explains why Titan does not have craters on its surface and its eccentric orbit, inherited from the perturbations prior to the impact. Because of this irregular orbit, Titan destabilizes Saturn’s inner moons, throwing them outward and thus causing cascading collisions between them. In short: Saturn’s rings would be the scar of this process, not the original characteristic of the planet, but the result of a chain reaction of destruction caused by the collision between two primitive moons. Diagram of Saturn’s rings from NASA Why it is important. Because Saturn’s rings are no longer seen as an aesthetic curiosity and become what they truly are: fossils of cosmic events. Furthermore, it requires reviewing the models proposed by the scientific community until now to expand knowledge about planetary formation in general. Without going any further, it provides more information about similar systems, such as that of the Earth and the Moon, whose origin is also attributed to a primordial collision. On the other hand, Titan has a strategic importance in humanity’s space plans: it is one of the most interesting candidates in the search for life thanks to characteristics such as its dense atmosphere or its methane oceans. Knowing its origin is not only a historical question: it is understanding what conditions made it possible and whether something similar could be repeated in other worlds. How they did it. Starting with the 2022 hypothesis, they applied computer simulations to check whether an additional moon could get close enough to Saturn to form rings. The goal was to recreate the solar system over thousands of iterations until the results matched the Saturn environment we know. The SETI Institute team, led by Matija Ćuk, got here after introducing an additional unstable moon that always ended the same way: with Hyperion disappearing again and again. It was the sign that a premise was incorrect, so they proposed something new: and what were there were two extra moons? Yes, but. Although this study offers a plausible explanation of the current Saturn environment, it is still based on simulations. There is no direct physical data from Titan. In fact, the team itself recognizes that they need more data. That’s where the mission comes in. NASA Dragonflywhich could provide more essential data to understand why the rings formed. This drone from the North American space agency will land on Titan in 2034 to analyze the chemical composition of its surface, which could reveal traces of the primordial impact and confirm (or not) that Titan is really the result of a merger. In Xataka | We have been deceived by the distances of the Solar System: the closest neighbor to Neptune is Mercury In Xataka | A new “solar system” has just been discovered. There’s just one problem: it shouldn’t exist. Cover | NASA, ESA, CSA, STScI, M. Tiscareno (SETI Institute), M. Hedman (University of Idaho), M. El Moutamid (Cornell University), M. Showalter (SETI Institute), L. Fletcher (University of Leicester), H. Hammel (AURA); image processing by J. DePasquale

Stellantis has lost 22 billion euros with the electric car. Their hope to solve it is called Zaragoza

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Stellantis embarked on a path of rapid and aggressive transition to the electric car. Along the way, it merged models on the same platform, wanted to convert brands to zero emissions and lost the identity of some of them. The result is 20 billion euros of real and expected losses. Now, part of his future is at stake in Zaragoza with a Chinese car. Saragossa. The news was almost a not news because Stellantis, through the mouth of its CEO Automotive Newshad already confirmed that it would manufacture Leapmotor’s Chinese cars in Spain. By then, with a CATL factory in the middle of construction and already manufacturing Stellantis small electric cars, Zaragoza seemed the best placed city, ahead of Madrid and Vigo. Last week, Filosa himself reconfirmed what was already known but expanded the information with some nuances as stated in The Aragon Newspaper. The car will be manufactured in Zaragoza and will not be alone. And the company has awarded Spain the production of up to four completely electric Chinese models. It will, therefore, be the reconversion of Figueruelas. The Stellantis situation. Although the investments were already confirmed, the last presentation of results could have raised some doubts. Then Stellantis confirmed that the electric car would have a negative impact of 22,000 million euros in your accounts. This does not mean, exactly, that it loses that money, but it is the readjustment that amounts to the cancellation of two new factories, the compensatory payment to suppliers, the money invested in new developments and the money that will no longer enter the company’s coffers. All of this is a consequence of a project led by Carlos Tavares, former CEO of the company, which has failed. The Portuguese wanted to accompany the conversion to all-electric too quickly and with a very aggressive cost adjustment. The result has been too much product at dealerships that very few have bought and models little differentiated from each other with a total loss of identity between companies. Good news (1). Firstly, because the arrival of Leapmotor in Zaragoza represents support for the electric transition in Figueruelas. The factory will be in charge of producing one of the first purely Chinese electric cars to arrive in Europe, a key step to be able to sell them without tariffs. But this also guarantees two things. The first is the opening of a new assembly line because they cannot use exactly the same one as for the Opel Corsa, Peugeot 208 and Lancia Ypsilon electric that Figueruelas produces at the moment. The second is that it increases pressure on the production of batteries that CATL will set up nearby, giving greater support to the project. It remains to be seen if the other three Stellantis models will also roll out of their doors.. Good news (2). The second part of the announcement is interesting in that the Leapmotor B10, the first car to be assembled in Zaragoza, is different from the three mentioned above and that in itself is a reason for joy for Zaragoza. And it is that the Stellantis urban electric cars have not been working well in the market. Everything indicates that, in the future, these electric vehicles will have to receive the embrace of the European customer but at the moment it is not being like thatwhich raised questions about long-term production with a plant that could operate at half gas. The Lepmotor B10 is a car that Stellantis has hopes for because it is different. It has much more striking interiors, adjusted to the huge screens that the industry has demanded in recent years. And it has purely Chinese software and development, so Stellantis can play with the price because its investments have been minimal. The company has the power to distribute the car outside of China but the development, investments and sales within China have been left to Leapmotor itself. Strengths and weaknesses. Stellantis’ decision to produce in Spain reminds us the strength that our country has gained in Europe as a productive alternative to advance electric cars. Either because labor is cheaper than in countries like Germany or France, or because energy is also cheaper, Chery or Stellantis, with Leapmotor, have decided that they will manufacture on our soil. Spain has the advantage of a well-established industry that needs reconversion. The problem is that, for the moment, it has focused on the assembly of small cars (as also happens in Martorell) which are the ones that are having the most problems to sell them or, if necessary, for the brand to make a profit from them. It would be interesting for our country to expand its presence in the development of vehicles and not only focus its industry on their production. Therefore, it is good news that Chery also bets on our country for its new R&D&i space. Photo | In Xataka | Volkswagen’s cheap electric car is manufactured in Spain: this is the new megaconstruction that makes it possible

The new director of Comic-Con Málaga does not come from fandom, but from a sector that can solve last year’s problems

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The first international edition of San Diego Comic-Con broke sales records of tickets and attracted almost 100,000 people to Malaga. The organization, however, received abundant criticism: capacity to the limit, queues that lasted hours and more than 550 complaints accumulated by consumer associations. Now comes a change of direction and, with it, a new opportunity to prove that pop culture’s biggest event can work outside of California. The first Comic-Con outside the US The mere news that Málaga would host the first international edition generated an expectation which translated into instant sales: three of the four days of the event were sold out in less than 24 hours at 50 euros per day. And there were still no guests. When these they started to advertise (Arnold Schwarzenegger, Antonio Banderas, Elle Fanning, Jared Leto or the composer of ‘Final Fantasy’ Nobuo Uematsu, among more than thirty international guests) the first criticisms intensified: it was not an event for fans, like its original namesake, but rather oriented completely to the mainstream. Some figures. The official statement announcing the first plans for 2027 takes stock of last year and speaks of 95,784 attendees over four days, with an economic impact of 44.3 million euros and the participation of more than 110 exhibitors and brands such as Disney, Nintendo, Lego and Bandai Namco. Here we find the first discrepancies with the past: the Malaga City Council announced at the time that attendance had been greater than 120,000 people (thus exceeding the 30,000 daily visitors admitted to the Trade Fair Palace). 25,000 visitors difference in the information that the organization does not explain now, nor is there any mention of the more than 550 consultations accumulated by Facua and OCU to file claims. Changes in the organization. Implicitly admitting that there are issues to improve, a change has also been communicated to the front of the event. Fernando Piquer assumes general management, replacing Javier Barberá. His profile is striking: founder and CEO of Movistar Riders, one of the most recognized esports teams in Spain, and responsible for the Global Strategy of Movistar KOI before this new assignment, he has no previous connection with the world of comics or fandom, which has already generated the first criticism. However, his choice makes sense: large esports festivals have served in the last decade as a laboratory for managing massive events, with young audiences, a festive atmosphere and large numbers of people in closed venues. These are events used to digitally managing massive influxes: digital accreditation systems, capacity control by zones, staggered time slots, computerized queue management, all of this is applied today to entertainment fairs. The question remains for the 2026 edition about content and guests, but a good team should solve that problem. Possible solutions. Massive and comparable events such as Gamescom in Cologne or Paris Games Week have incorporated ticket systems by time slots, official apps that show crowd saturation maps divided into pavilions, and there are organizational teams dedicated exclusively to managing access flows. It is also worth reviewing the prohibitions on bringing water and food to the event, given the saturation that occurred at the food stalls and fountains. They are technical problems that have been identified and that can be solved: the next step should be announcements in that direction, especially considering that criticism of the event in terms of organization was widespread. In Xataka | “We are taking the industry towards 3D”: the creator of ‘DOOM’ has a full-time job and that is explaining ‘DOOM’ to you

If you have run out of free HDMI ports on your TV, this switch costs 15 euros and will solve the hassle for you

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Although most televisions come with three or four HDMI ports, on many occasions we can fall short if we want to connect one or more consoles, a computer or a Fire TV Stick. For this, the switches or switch They are quite practical accessories that allow us to add more devices, and they generally tend to have a fairly reasonable price. The Anker Switch HDMI is one of the most affordable within the brand, and its compact format is designed so that it does not take up space on the television cabinet. Its price is 14.99 euros and it is a switch two in onewhich allows us to connect two devices to a single HDMI port on the television. The price could vary. We earn commission from these links A way to connect multiple devices to one HDMI port The switch They are usually compact accessories that incorporate several HDMI ports: two or more input to connect devices and one out dedicated to connecting it to the TV. This one from Anker allows you to connect two devices, such as one PlayStation 5 and one nintendo switch 2and switch between them by simply pressing the button at the top. This switch offers a ratio of up to 4K/60Hz and is compatible with HDR and with a wide assortment of devices, thus allowing us to connect a console such as PlayStation 4 or PlayStation 5, an Xbox Series, a projector or a computer, among others. On the other hand, if we are looking for extra comfort, there are many others switch which include more HDMI input ports and a remote control with which to switch between connected devices. One of the most interesting is the Ugreen HDMI Switch (29.99 euros), which in this case comes with three HDMI input ports and a remote control. In case you want to take full advantage of the features of the current generation consoles, Ugreen has another switch (19.59 euros) that offers a relationship 8K/60Hz and 4K/240Hzalthough in this case it only comes with two HDMI input ports. You may also be interested Anker 8K HDMI Cable at 60Hz, Ultra HD 4K HDMI Cable at 120Hz, 0.9m, Certified High Speed ​​48Gbps Cable with HDMI 2.1 and HDR, Compatible with PlayStation 5, Xbox, Samsung TVs and More The price could vary. We earn commission from these links Logitech K400 Wireless Touch Keyboard Plus for TV with a Multimedia Control and Touch Panel, HTPC Keyboard for TV connected to PC, Windows, Android, Chrome OS, Laptop, QWERTY Spanish – Black 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. Images | Juan Carlos Lopez and freepik (header), Anker In Xataka | This is the gaming tower that I would buy. The computers with the best quality-price ratio for gaming recommended by Xataka In Xataka | Best gaming laptops: which one to buy and eight recommended computers from 770 to 3,000 euros

China knows that what happens in ‘Interstellar’ is a real problem on the Moon. And it has been proposed to solve it

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58.7 microseconds. That is the daily margin of error that separates a terrestrial clock from one on the Moon. This time lag It seems ridiculous, but it brings head to aerospace engineers for decades. The reason? That ‘sigh’ can be crucial in a mission, the difference between a perfect landing and a disaster. And while in the West we continue talking about the problems of Artemis missionin China they have found the solution for that time lag. It is called LTE440, and it is another example of the China’s methodical advance in the new space race. Microsecond piggy bank. If you have seen the movie ‘Interestellar’, looking for information about how time flies far from Earth, that you would come across the general relativity theory formulated by Albert Einstein. Simply put, the passage of time is relative, and the speed at which it passes depends on two factors: gravitational field intensity and orbital speed. The stronger the gravity, the slower time passes, and that is why it moves a little faster on the Moon than on Earth. The net result of that orbital effect is a slight advance in lunar clocks. One of between 56 and 58.7 microseconds per day, or 0.000058 seconds. It seems tiny and negligible, but in the end, the sum of 58 microseconds each day is there. 0.0017 seconds per month. 0.021 seconds per year. It is still little, but in terms of the space industry, it is unacceptable. LTE440. This synchronization between the lunar and terrestrial clocks has been one of the headaches of space engineering for years. In 2024, the International Astronomical Union, fixed that the Moon should have its own temporal reference. Meanwhile, time has passed and an answer has arrived: LTE440, or ‘Lunar Time Ephemeris‘. It is a software developed between the Purple Mountain observatory next to the University of Science and Technology of China. And it arrives to solve two of the historical problems in that lunar timing: Precision: Complex missions require total accuracy (not with a Casio, but with atomic clocks), and the solutions until now did not allow such precision. Complex calculations: Current solutions were not very accessible and engineers had to do laborious calculations and mathematical operations to solve jet lag. Absurd accuracy. It is estimated that the precision of LTE440 It will be less than 0.15 nanoseconds before 2050 and its accumulated errors will remain below 1/20,000,000 of a second even after a thousand years. But more important than this is that the research team has made obtaining the calculations as simple as doing a single operation. Thus, the LTE440 software will allow you to directly and easily compare lunar time with Earth time. opening doors. Okay, great, but… really that much for 56 microseconds? Having the current aspiration of creating a communication network and missions both with the Moon and interplanetary, one of the most logical applications is that of a global network of lunar clocks. Another is to allow extremely precise remote control missions to be carried out from Earth. China and Russia, for example, plan build an International Lunar Research Station looking to 2035, and LTE440 opens the door to more precise operations on the satellite ground. But also something more tangible and easy to understand: establishing a navigation system similar to GPS on the Moon. It is something that does not exist, but that seems crucial for future space missions. Because this is not about establishing colonies on the Moon, but about taking advantage of the satellite. For example, to investigate it, but also to get resources that can be used on Earth. And a system like LTE440 is an open door for the development of the navigation technologies necessary to bring these missions to fruition. The US looks closely. As we say, China has one eye on the Moon and space, and that is something that the United States is following with interest. China is taking giant steps and the United States has come to feel that it is being left behind. Artemis II is the American answera program full of problems and delaysbut it seems that it is already working. On the other hand, and as with the terrestrial situation, the United States considers that China’s advance in space is not a mere scientific question, but rather a threat to the country’s national security. They have reached aim that the Space Force will do “whatever it takes to achieve space superiority.” Therefore, LTE440 is, at the same time, a technological milestone, a great step for humanity in the new space race and a threat to those interests of the United States. Now, as we read in SCMPthe software is still in an early phase, so it has yet to be applied in real-time navigation solutions. Images | Tomruen In Xataka | Hubble continues to discover amazing things about the universe: a starless galaxy dominated by dark matter

We have been fascinated, confused and intrigued by Roman “concrete” for three decades. Pompeii is going to solve it for us

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Almost 2,000 years have passed since Mount Vesuvius unleashed a pyroclastic hell that devastated everything that was around it. That was what ended Pompeii, but it was also what gave it eternity. The Roman city began to be excavated in 1739 and, we believe, a third of the city is still underground. That’s why it still continues to surprise us. A work half done. That week in the summer of the year 79 AD, the first domes of the X insula of the IX regio was under construction. This is not surprising, of course. All of Pompeii had been under construction for almost two decades (since the earthquake of 62). However, the curious thing is that on the night of August 24, the workers were caught with everything bogged down. Plumb lines, chisels and weights; stacked tiles, tufa bricks; amphorae filled with lime, reused demolition materials and piles of pozzolans scattered on the ground. Everything has remained there, untouched, until a team from the MIT Department of Civil Engineering found and cataloged them. “The weapon of crime.” By reconstructing the scene and studying the processes, researchers concluded that these masons left incontrovertible evidence of how they mixed “hot” quicklime with volcanic ash to create concrete capable of repairing itself. In fact, as Miguel Ángel Criado collectsthings go further: the chemical and crystallographic analysis of the materials reveals quicklime (calcium oxide) in the structural concrete and slaked lime (calcium hydroxide) in the finishing mortars, thus confirming a double differentiated use. Have we finally found the key to Roman concrete? A recurring question. In 2023, I already said that “Every so often, the world rediscovers Roman concrete and is amazed by the durability of a material that allows Agrippa’s Pantheon to stand for 2,000 years.” “While modern concrete cracks after a few decades,” they usually add. By the way, “almost with the same regularity, there is some scientist or engineer who claims to have found the key secret to making this so.” But the truth, the true truth, is that despite its undoubted historiographical interest (and its potential for illuminate our knowledge of the masonry practices of 1st century Rome), the hype is always unjustified. The two mistakes of Roman concrete. When talking about Roman concrete, a lot of mistakes are usually made, but there are two recurring ones: the first is “the survivor’s bias.” As Manuel F. Herrador reminded usprofessor of Structural Concrete at the School of Civil Engineering of the Universidade da Coruña, the idea of ​​the extraordinary quality of Roman concrete comes from studying, precisely, the best structures they made, the ones that have been best preserved. Instead, most of what the Romans built has already completely disappeared and cannot be studied. The second error is even more basic and is based on ignoring that with Roman concrete we couldn’t do even a tenth of the things we do today with modern concrete. For example, today we can make long and relatively narrow “pieces” thanks to reinforced concrete. That was impossible with Roman construction techniques and is what makes our structures corrode faster. Who wouldn’t like a Roman concrete…? We already knew that Roman concrete is not a single miraculous material, but a family of recipes adapted to local environments and resources (ports, temples, roads, thermal baths). This finding only confirms it; but, in a calculated way, it is used to take advantage of the expectation that this material generates in the public imagination. And if it weren’t for making invisible the excellent work of contemporary researchers, it wouldn’t be a problem either. Because what is evident is that we do not make “Roman-style concrete” not because of ignorance; we don’t do it because we don’t want tobecause it does not serve the world we want to build. Image | Andy Holmes In Xataka | We have a problem with concrete: the same technology that allowed us to build the modern world threatens its future

The existence of lightning remains a mystery to atmospheric physics. Austria has given us a clue to solve it

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It seems unbelievable, but in the middle of 2025 one of the most common and violent phenomena of nature continues keeping many secrets. This is the case of raywhich we know how to protect ourselves from and we know that Franklin had very right with your kite. But if we ask an atmospheric physicist what exactly detonates the first spark inside a cloud to start the download, you’ll probably shrug your shoulders. The discovery. We would expect the answer to this classic meteorology question in the sky itself, but in reality it seems to be in a laboratory in Austria. It has been here where they have achieved something that seems like magic: using lasers to trap microscopic particles in the air, and almost by accident, discovering a charging mechanism that could be the ‘missing link’ in the formation of lightning in our sky. What we knew. For lightning to strike, it is necessary that there is a monstrous electric field that breaks the resistance of air, something that has a name: dielectric breakdown. The problem is that when we measure the electric fields inside a thundercloud, the numbers don’t add up: They are too low to initiate lightning on their own. This means that scientists have long suspected that the secret was in the aerosols and ice crystals that collide within a cloud. And the theory is quite clear: if a small particle could accumulate enough charge, then it has the ability to create a micro-electric field around it so intense that it would start a chain reaction. The problem is that studying a microscopic ice grain in the middle of a storm is impossible, since we can be next to it and we cannot lower the cloud to the ground either. That is why this is where this research comes in, which has found a high-tech solution with optical tweezers. The experiment. To find the answer, a 532 nm green laser was used to make lift a silica sphere just a micron in diameter. But… Why? In this case, the initial objective was to measure forces precisely, but they encountered something very strange: the laser itself that held the particle was electrically charging it. Far from being a mistake, they realized that they had in front of them a perfect tool to simulate the atmosphere in miniature. It was no longer necessary to go to a cloud to analyze it. In this way, they began to charge a particle with so much static electricity that it caused a dielectric breakdown in the air around them, discharging themselves suddenly. They had literally created a controlled micro-ray in the laboratory. The authors of the study explicitly suggest that this system is an ideal model to study the electrification of aerosols and clouds. Its importance. Until now, studying these phenomena required getting into a storm-chasing plane or relying on computer simulations. But now we have the ability to simulate these conditions in a controlled way. And it is also ideal to understand why sometimes the sky seems like it is going to break in our own heads. Images | Michael Mancewicz In Xataka | What is a dry storm: when the sky throws lightning, but the rain never reaches the ground

Today we know how to solve crimes with scientific precision. And we owe it all to a lady with a dollhouse

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You imagine the scene and smile. It is perfect to become the seed of a script that ends up winning an Oscar. You, along with dozens of other male criminology students in the room, are greeted by a woman in her 50s who looks like an endearing grandmother. You go to the next room and in it you find a doll house which, they order you, you have 90 minutes to examine. “They sent me here because they told me it would be a training visit,” you protest internally. When you look at the recreation you begin to perceive the macabre aura of the event. The mental image of what a toy house must be is broken inside you when you see that the cloth and porcelain romper is a headless prostitute thrown on the bathroom of a room to which over the years, you notice, the same squalor that has characterized the life of its guest has been attached. There’s more: one thing catches your attention, just one of hundreds. Some lines drawn in chalk on the miniature ironing board in the corner of the room. They mark the price that the utensil must have had when they bought it several years ago. You look at the whole and the level of detail The entire room is such that you start to get dizzy from the puzzle you have to solve. But there is no room to be stunned. The strange grandmother at the beginning had already warned you: you have 90 minutes and there is not a single one to lose. Frances Glessner Lee, dollhouses and the true origin of CSI Frances Glessner Lee, whom we know today as “the mother of forensic science,” he didn’t have it easy to get to where he did. If it were not for a concatenation of circumstances, it is likely that this police branch would have lost one of its most valuable and, of course, curious pedagogical milestones that we have known. Born in Chicago in 1878, Lee was the daughter of John Jacob Glessner, owner of the successful International Harvester company. Motivated by her childhood and teenage readings of Sherlock Holmes, she longed to dedicate herself to the exciting world of homicide investigation. At the end of the 19th century, the typical thing for society ladies was not to go to Harvard and then dedicate themselves to solving crimes, but get married and start a family. They forced this on him when he was 20 years old. He divorced and waited for his father and brother to die so he could inherit the family fortune and finally be able to make his own decisions. In all that time his concerns never went away. He studied criminology in Boston, He donated part of his inheritance to Harvard to open a brand new forensic medicine department there and he got to work. At 52 years old. Throughout her life, Lee founded the Harvard Medical School and served as an advocate for absolute rationalization in police investigation. among many other thingsbut the great work of his life was another: his Limited studies of unexplained deathsa series of 19 dioramas or small miniature doll houses that represented complex crime scenarios that would be analyzed by future students of Criminology or Forensic Investigation. As a socialite, Lee used her money and social skills to make your way into the world of men and convince them to participate in your proposal. The cottage seminar by day, opulent parties at the Ritz Carlton by night. Fourteenth State Police Homicide Investigation Seminar, November 17-22, 1952, at the Department of Forensic Medicine, Harvard Medical School. Read to the right. Harvard Medical Library and Francis A. Countway Library of Medicine. Complete photograph of your death: every object around you counts If something stands out all the biographies of Lee It is his unhealthy passion for detail. The passages about his works are an endless collection of nouns and adjectives. The cans of food in the cupboards, the fogged-up mirrors, the half-peeled potatoes, the overflowing ashtrays, the unmade beds, the open oven faucets, the pieces of wood under the nails, the violet stains observable on the subject’s face. The backyards and fire escapes hidden from view of investigators and that Mrs. Lee ordered from specialized carpenters just so that no element of the room imagined in her mind escaped her control. Only one thing escaped him: it is not possible to distinguish rigor mortis in a doll. For all this only Lee can know how many months or years was able to dedicate to each of the jewels in his gloomy collection, which cost as a result of 3,000 or 4,000 dollars of those of that time piece by piece and that involved both work and love: all the textile elements that we see in the dioramas were made by her herself. The Bounded Studies are not only a pedagogical tool, but also a theoretical proposal on the tangible, material aspect that surrounds the reality of human death. As if each object, each frayed blanket and each photograph on the front page of the newspaper that has the figure of a murdered man at its feet, also became part of the same concatenation of events that led to his death. Pure chaos theory applied to forensic architecture. As we have learned later, the houses became so complicated that many students were not able to find the appropriate solution as to how the hypothetical crime had occurred, but rather that they were simply left unable to give a single answer. A pedagogical legacy still to be resolved Of the 18 dioramas that Mrs. Lee made, we only know the answer to 13 of them. Over the years, no one has been able to solve five of these simulations that are still considered some of the most arduous homicide scenes in history. Its creator took the secret of those five rooms to the grave: she agreed if the participant proposed the correct … Read more

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