There is a site in Granada with more than 50,000 semen samples. We have been there

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It all starts with an ad, with mouth to mouth or with a casual encounter. Then comes an email and a telephone interview. The first visit, three or four days of abstinence and a taco of informed consent. More things will come: an immediate test (volume, quantity, mobility …) and then a rosary of exams in a long process that will end several months later. For that moment, Only 20% of those who started still in the process. Only now donations will begin. This is how, today, many more children we think are made. 38,644 Assisted reproduction is already behind 12% of births that occur in Spain and that means that Only last year almost 40,000 children were born with the help of this set of reproductive technologies. And, although it is true that not everyone requires donor sperm, current donations barely do not cover demand. And with the average age of the first and older child, all experts agree that he will go more. Semen donations are just a small part of the process, but a very unknown. That is why we have traveled to the heart of Granada, which is possibly The largest semen bank in Spain: Gametia Biobank. What is really a semen bank? Louise Brown was born on July 25, 1978. He was the first person born through in vitro fertilization and, without being aware of it, put everything we thought we knew about having a child. Not 15 years later, José Antonio Castillaa reference in the world of reproductive medicine was founding in Granada Ceifer, one of the most important semen banks in the country. For decades, Ceifer was creating a donation culture (In a strongly university context) that has allowed him to lead the sector for years. Now, integrated into the group Next Clinics (And under the brand of Gametia Biobank, since 2022) they remain in it. Not in vain, 23,096 of the 56,700 samples registered in Spain (41%) between 2018 and 2023 come from there. Of course, the figures are true, but they have some trick: Gametia was for a long time one of the few centers that scored the data in the National Registry and has been a pioneer in its implementation. In spite of everything, the weight of Gametia at the national level is much greater than the demographic weight of a city like Granada could be presumed How have they achieved it? As Carlos Zafrilla, director of Operations of Gametia explained to us, thanks to “that tradition (which has become) into one of the main banks of the bank.” Although it is true that each session/donation is compensated with 50 euros (And the legal limit is about 40), the inconveniences of being a donor – with the long periods of sexual and other abstinence – make it difficult to understand it as a way of “earning money.” Nor is it fast, nor is it simple, nor is it so comfortable as I might think. From Gametia they insist, in fact, on personal commitment commitment. In the end, hidden after the anonymity that the law guarantees them, these donors are one of the least visible pieces of a process (that of in vitro fertilization) that are usually long, complex and full wear for families. And being a donor requires sexual abstinence, not consuming substances for long periods, carrying strict health control. Things that can be uncomfortable For a young population in a city with more than 80,000 university students. A melody sounds. El Biobanco, a place with a warm and very pleasant aesthetic that Away from the cliché inherited from North American filmsit has two rooms with chairs, sinks and televisions to perform donations. As soon as donors use a button and a melody sounds. It is a key piece to guarantee the traceability of the material. Once the sample is collected, it is purified and concentrated, it is sealed in 0.5 ml straws (with a unique code) and freezing immersing them in liquid nitrogen at -196ºC. In the heart of the center there are at least 35 tanks that store an average of 1900 straws Each unoy guarantees the safety of a material that must be preserved even if it is discarded. Then the Gametia team matches donors and receivers. Despite the precancevid idea, this pairing is strictly regulated by law and There is no “donation to the letter”. And once selected, they travel in portable cryogenic containers to the nearly 400 hospitals and clinics throughout Europe. In Xataka | Reproductive Wars: When will we stop needing women to have children?

The brain works twice what we believed as we slept. At least in regard to memoirs

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The dream continues to be one of the great enigmas for those who study it, either from the perspective of evolution or from the point of view of medicine. We know that the dream It is important For our physiological and psychological well -being. For decades of study we have been discovering some of the things that make dream more than a simple period of rest. And we continue to discover new details. Preparing the lesson. A new study has observed That, during sleep, hippocampus neurons are predisposed for learning what will come in the next day. The study now allows us to understand new ways in which sleep becomes a fundamental factor in the consolidation of our memories in memory. Sleep and memory. The dream is essential for rest, but we know it is more than that. During the time we remain sleeping our brain goes through a series of stages in which it alternates periods of greater and lesser activity in some of which we also dream. We know for example that during these hours the brain performs some “maintenance tasks”, such as a kind of Internal cleaning. We also know that the dream is key in memory, but we used to think that this happened a posteriorithat is, that the brain took advantage of this period to “strengthen” the memories and neuronal connections that support them. The new study indicates that the opposite could also be true. Greases. The study He noticed In the so -called swab, interconnections that allow something apparently abstract such as memory to be reflected in our brain. These greases are built by a series of specialized neurons, the engagle cells. The new study detected a new population of neurons of this type to which he called “grease-be Cells”, A sort of“ pre-training cells ”. This group of neurons showed increasing synchronization during post-learning sleep, Explain the team. However, what the team detected is that after this, this population of cells did was encode a new (future) learning experience. New techniques. As explained by the team responsible for the study, the analysis was carried out by resorting to advanced image systems that combined visualization through calcium with labeling of the ENGRAMA cells. This allowed the team to measure neuronal mice activity before, during and after learning experiences. After detecting the curious phenomenon of the “pre-training cells”, the team created a neural network model to simulate the activity of the hippocampus. This model allowed to study the adjustment mechanisms that interconnected neurons and sleep and how they were essential in the appearance of this population of neurons. The details of the study were published In an article In the magazine Nature Communications. Double work. This process of strengthening structures that will constitute new memories is produced simultaneously and without prejudice to the consolidation process a posteriori described in previous analysis and also observed In the recent study. In Xataka | Neuroplasticity: the people who defend that the Internet is changing our brain forever Image | Craig Adderley

If your mobile sounds like a maracas when stirring, you are in luck. Your camera has what you have to have

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There is a question that my acquaintances ask me lately when they buy their new phone and, unintentionally, they move it a little stronger than the account. Why does it sound like there was something loose? Depending on the size and distribution of the cameras, the sound can be more or less strong. For example, my iPhone 16 Pro sounds quite lazy, but my Pixel 9 Pro It is a show. In both cases, more or less sound, the origin of this phenomenon is a consequence of good news: the camera is level. THE SOUND TO MARACAS. Agite the phone and that sounds at the top is a matter of concern for users, and in Forums like Reddit It has been widely discussed. There is only one reason for the phone to sound like a maracas when moving it, and that reason is the OIS. These are the acronym for optical image stabilizer, and if your mobile has one, you are in luck. And no, there is no problem that sounds in specific situations such as stirring the phone. What is an ois. There are two ways to stabilize an image: physically or digitally. In the first case you just have to process the image through some cut to try to eliminate trepidations. In the second, we talk about a mechanical system in charge of compensating the involuntary movements we make when holding the phone. This Ois It is usually composed of a game of gyroscopes and electromagnetic actuators, designed to compensate for the micromevications that this area suffers. If you move the mobile phone, you will compensate to the right, and so on each of the possible directions. Not all ois are the same. If my iPhone 16 pro sounds less it is because it does not use a traditional system, it directly uses a stabilized sensor. This means that there is no movement in the lens, but in the sensor itself. This is much more precise compared to traditional, faster, and useful with large sensors. It is a technology that has not ended up standardizing, since its implementation is more expensive. What does the ois allow. Thanks to OIS, we can obtain more clear photographs in any type of light condition, but especially in low light. Not having hardly trepidations, the camera can lower the shutter speed (almost as if it were on a tripod). It also affects videos, in which stabilization is key. Both when capturing video with more light and when allowing more stable planes, the OIS is simply essential. More and more mainstream. The OIS, despite carrying with us more than ten years, is not completely standardized. More and more mid -range mobiles carry it, but when manufacturers want to save costs, the OIS is one of the elements they cut. If we look at the list of devices released in 2025 with OISthe tonic is clear: mid -range mobiles, leaving the cheapest proposals (such as the recent CMF Phone 2 Pro) At the mercy of electronic stabilization. Image | Xataka In Xataka | How to take the best photos with a cheap mobile: seven tricks to compensate for technical limitations

There are more and more physical videogames that are pisapapeles. It is a tremendous problem for the video game as art

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Video games have been traveling the same path as music and cinema for a few years: change towards digital. The releases are now digital and Streaming video game platforms They have been a great jump in the industry. Some -xbox- are so clear that much of their strategy revolves around this technology. If you want the physical format, it is also there, but with an important small print: the album you buy may be empty. AND ‘Doom The Dark Ages‘It has been the last example of this new reality. The controversy of ‘Doom’. The games each time they occupy more and more space. That is why the current physical format, the Blu-ray, has long opted for the double and triple layer of 66 and 100 GB respectively. A lot of information enters an album with that capacity, but the problem is that the recent release of ‘Doom The Dark Ages’ shows that, on the album, barely There are 85 MB in PS5about 320 mb in Xbox Series x. It is a motorcycle of dust in an ocean. What does this imply? Well, when we introduce the album in a PS5 or an Xbox Series X, the data that is installed are not on the disc: it is the files of those 85 MB that give the order to the machine to download the data of the servers of the corresponding companies. That is to say: The new ‘doom’ album is a launcherbut it’s nothing new. The ‘tweet’ of the controversy Ubisoft has taken the taste. Before the last Bethesda game, the controversy in this regard came with each Ubisoft launch. The French company has had some of the largest games in the industry in recent years (such as’Avatar: Frontiers of Pandora‘,’Star Wars Outlaws‘ and ‘Assassin’s Creed Shadows‘) And, although not everyone has gone well, they do share something: you need the Internet to install them. Physical format, but not much. It is no longer that you need the Internet to play (‘Gran Turismo 7‘, among others, they require constant connection to Sony servers or we will not be able to play most of the content), but the game must be downloaded even if you bought it in physical format, relegating the box to something that simply occupies space on the shelf. But there are more examples of other companies, such as’Indiana Jones and the big circle‘ either ‘Stalker2‘. Others like ‘GTA Trilogy‘They can be played with disk content, but they are so broken that without patch it is not worth it. And cases like ‘Star Wars Jedi Survivor‘ either ‘Hogwarts Legacy‘They bring the beginning of the game on the album and the rest under download. The alternative? Two albums, as does’Final Fantasy VII Rebirth‘, but that also increases costs for companies. Activism. All this has caused a reaction in users. It is not about being against the digital format, but about the albums that come practically empty because nobody knows what will happen when the servers close. It is a new situation in the industry and we have already seen cases (Ubisoft closing servers of ‘The Crew’ and making it impossible to play something you have paid in physical or digital format) of inaccessible games when the company closes the tap. That is why initiatives such as Stop Killing Games To be the authorities who promulgate laws that prevent our remote games from deactivating, but there are also initiatives by users that allow us to know which games are complete on the disc and, if they need download, to what extent it is mandatory. This is the case of the web Does it play? in which users report the status of physical versions in video games. And the big question. As we say, the most recent mess has formed around the launch of ‘Doom The Dark Ages’, and the question is what will happen to my physical video games in the future. Title Xbox 360 It guarantees me, whenever I have a console, to be able to play it now or within 20 years, but nothing assures me that in 20 years the active Microsoft servers are keeping my copy of ‘doom’. And we focus on the case of almost empty Blu-ray, but we could put the Game Key Card of Nintendo Switch 2 In the bag, since they work in the same way. Green outbreaks. On the one hand, platforms such as Good Old Games They allow us to buy a digital game, but when we get with it, we have an installer to be able to install it offline as many times as we want without depending on servers. Even when they remove games for licenses, recently The case of ‘Warcraft 1 + 2‘, If you had already bought them, they are yours forever. On the other hand, when we have attended Nintendo DS servers closures, Wii or Xbox 360, companies have warned in advance so we can make the necessary purchases Before video games disappear forever, being able to download them in the storage of the system or hard drive to play them in the future. Because Ubisoft or Steam have made it clear that Digital games do not belong to usbut physicists should be ours and, if the servers close in the future, we will have to see what happens with all those albums that only have a launcher inside. Because, in the end, this goes beyond being able to play my physical game within 20 years: it is that it is a practice that Play against the preservation of the video game as art, one that can make many They disappear forever. Main image | Xataka In Xataka | The consoles are still the stars of the video game. Real money is on mobile and microtransactions

The bad news is that the oxygen of the Earth has an expiration date. The good is that we will not be here to see it

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We can breathe calm. Also the grandchildren of our grandchildren’s grandchildren. But the oxygen that supports complex life on Earth will not be eternal. Our oxygen -rich atmosphere has approximately one billion years. So, the change will be drastic. A rapid dexygenation. An international study published in Nature Geoscience Details the calculations. After making more than 400,000 simulations on the geological and biological evolution of our planet, Japanese and American scientists came to the conclusion that the Earth will experience rapid dexygenation that will return it to an atmospheric state similar to that of the archaic land of about 2.5 billion years ago. What the sun gives you, the sun takes it away. Until recently, the scientific community estimated the life expectancy of the Earth’s biosphere in another 2,000 million years, when global warming at geological time scales leads to the evaporation of the oceans. But this new model projects a different scenario. According to researchers, the increase in solar radiation will intensify the cycle of carbonates and silicates. This will cause a drastic decrease in carbon dioxide concentrations. With less co₂, photosynthetic organisms such as plants, the main oxygen producers, will die. The result: a vertiginous fall of atmospheric oxygen. If perhaps, anaerobic life will remain. With a millionth of the oxygen we have today, complex life forms will be extinguished long before the oceans boil and the planet is left without surface water. For the vast majority of life forms, whose metabolism depends on oxygen, this will be the end of the road. The model indicates that deoxygenation It will happen at 1,080 million years (with a deviation of ± 140 million years). By then, the earth’s atmosphere will be radically different, with high levels of methane, low carbon dioxide levels, and a total absence of ozone layer. With luck, it will be a world of anaerobic life forms. And what is this data for us. Although we will not affect us, nor the grandchildren of our grandchildren’s grandchildren, the study, funded by the Nexus for Exoplanet System Science Science project of NASA, has important implications for the search for extraterrestrial life. It suggests that an oxygenated atmosphere is not a permanent characteristic of habitable worlds. Oxygen, and its photochemical by -product, ozone, are two of the biofirms that seek space agencies in exoplanets. If the oxygen rich atmosphere of the Earth will last between 20 and 30% of the total life of the planet, other planets similar to the Earth could now have weakly oxygenated or anxic atmospheres. The search for life beyond our solar system will have to expand its scope to other biological firms. Image | POT In Xataka | 20 years of changes in the biosphere of the earth summarized in a wonderful 4K video of only two minutes

The contradiction that solves the bottleneck of solid state batteries

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Lithium ion batteries carry decades fulfilling its role on day -to -day devices. They are still very valid for mobile, consoles and other small devices, but the arrival of the electric car has promoted a change. The industry is looking at some solid state batteries that have become In the best asset For car electrification. Promise much older autonomiesa longer life, faster loads, lower weight and greater security. There are many companies like Huawei, Samsung, Sling either Fordamong others, investigating the development of these batteries And, although marks like BMW don’t want to hear anything about them At the moment, others such as Mercedes have begun to implement them in test models. And the Technical University of Munich believes having found the key to accelerating the development and adoption of solid state batteries: a new material that “dopa” lithium and lithium conducts its ions 30% faster than any other material. Doping lithium to accelerate solid state batteries Despite all its promises, solid state batteries have faced historically a key bottleneck: The low ionic conductivity at room temperaturewhich limits loading and unloading speed. In liquid electrolytes, lithium ions move easily, but in solids, the crystalline network and interionic forces They hinder That movement, slowing down the process. Therefore, much of the current research It focuses on finding materials that allow a more efficient ionic migration The Energy Research team of the TUM has published a study in which it is detailed how they have achieved that improvement in conductivity. The key has been a new material that achieves the greatest ionic conductivity ever registered in this field thanks to eliminating part of the lithium and replacing it with Scandio. This substitution generates holes in the crystalline network that are called “vacancies”, and by reducing that density, the movement of lithium ions is freer. Therefore, conductivity increases significantly. According to his tests, this new compound of lithium, antimony and scandio drives ions 30% faster That any other material known to date and Professor Thomas F. Fäsler, team leader, points out that the material not only allows that higher speed, but also an improvement in thermal stability. “By incorporating small amounts of Scandio, we have discovered a new principle that could serve as a model for other elementary combinations,” says Fäsler. “The materials that conduct both ions and electrons are especially suitable as additives in the electrodes and, due to their promising practical applications, we have already requested a patent to develop it,” he continues. Apart from this new material, during the investigation they realized that there are other substances that work well with other materials. Jingwen Jiang is one of the authors of the study and states that his combination “is based on lithium and antimony, but the same concept can be easily applied to lithium and phosphorus systems. In previous record it was based on lithium and sulfur and required Five additional elements for optimization, but we have only needed scandio as an additional component. ” He also states that his discovery could have broader implications to improve conductivity in other materials, but Fäsler confesses that although they are optimistic, “many tests are still needed before the new material can be used in battery cells.” Therefore, it seems that There is time for these solid state batteries to impose themselvesand it is also logical to think that, little by little, they will optimize them much more. At the moment the interesting thing is so much that they have improved that ionic communication and, above all, that they have done so simplifying the processes with simpler compositions. Images Robert Linder, Tum In Xataka | The United States and South Korea come together to overcome a great challenge: 3D batteries impression for electric cars

Selling a second -hand electric car is a very bad idea. Unless your car is an xiaomi su7

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The second -hand electric car It is worth little money. Very little money really and much less than that of a combustion car. Something that makes sense if we take into account how technology progresses and the speed with which electric cars are outdated. This maelstrom in which the market lives has caused some rental companies to have lost a lot of money with the electric car. The case of Hertz and Tesla It is representative of how a brand can be a shelter value For a while and collapse in the second -hand market in a very short time if she herself decides to lower prices or competitors begin to launch important innovations. Xiaomi is living that moment Tesla. And, therefore, it is the company with the highest residual value in its vehicles. A value so high that it pales that of the rest of the manufacturers, including Europeans, and that has its reason for being in high demand and novelty. Xiaomi is living its moment Tesla The electric car market, although already giant in China, is still a relatively new market. That causes some distortions such as the one that Xiaomi is living or the one that Tesla herself has lived for years. To give some examples of the impact that some brands can have. Elon Musk’s company has gone so ahead of the competition that in Europe has come to have market quotas greater than 10% A few months ago, an extremely high figure considering that it competes with four cars and only two of them are available to the general public. That fever for getting a Tesla has left us curious photographs. So much that before a broken supplies chain, there would be who will pay a surcharity in front of a new car for getting a second -hand tesla in the semi -new market. Or that the tesla cybertruck was for months the car More than 100,000 euros best selling of the United States. But it has also shown us why these types of situations have occurred. The value of Tesla in the second -hand market fell when the supplies chain was balanced and the company itself began to Apply aggressive discounts to maintain its market share in the face of competitions. Also when The cybertruck bubble went unblog And the demand seemed satiated. They are two phenomena that explain why the Xiaomi Su7 is the Chinese electric car that loses the lower a year. In fact, according to the Chinese Chinese Automobile Association, retains 88.7% of its value after a year. It is a spectacular figure to which, among Western vehicles, only Tesla Model X (77.8%) and Model 3 (75.3%) can shade in China. With 71.2% value retention, the Tesla Model and sneaks among the 10 electric cars that retain the most value in China. Form, next to their brothers, the only Western electric cars that enter into this section. Behind Xiaomi, Li Auto occupies the second and third position with the M9 and the Mega. It is surprising that Not a single byd car between the list Of the electric cars that retain the most value a year but it makes sense if we serve the brands we find in the list. Xiaomi, Li Auto, Tesla and Smart (which sneaks as seventh) are brands considered premium in in the Asian country. But there is another component, any of those companies have a smaller production or offer than that of the Chinese giant byd. Who looks for a “affordable” tesla has two options and four in the total of its range. Li auto only has five options. Smart is growing its offer. Xiaomi has only one vehicle. To keep in mind what price difference exists with Western companies, Volkswagen, Ford and Kia lose half of their value in a single year. None of them retains more than 53% of the same past for a year. The European company that best yields Porsche (69%), followed by Mercedes (59%). Xiaomi fever has been so high that demand has surpassed supply. He has done it with the entire range, from its basic street versions to the most powerful and radical that added a volume of reserves in 10 minutes according to its entire annual production. That excessive demand prevents the car from falling on price in the second -hand market and that, in specific cases, shoots at the price. To this we must add that the Chinese market is turning with local companies. Li Auto and Xiaomi are seen as companies that offer the latest technology and that are A step ahead of the western ones to which they only see as combustion cars brands that Electrified versions put on the market. That need to feel something new or something different and more advanced in the electric car has led the country to create the label of “Smart Electric Car” Because users feel the need to differentiate between electric cars “for day to day” or that offer a connected experience but similar to the one we experience in the West and those that offer more advanced options such as a better quality semi -autonomous conduction. That unstoppable advance of the industry (more advanced cars in autonomous driving, recharges to ever views, battery changes in stations …) Slop the price of electricity in the second -hand market because they cause premature obsolescence and put obstacles to companies that cannot play at that rate. In that market, the best news is to be a young company, with a very reduced offer that has managed to create a very high expectation for a model. Photo | Xiaomi In Xataka | 400 kilometers loads in five minutes of ByD are as impressive as it is not very useful. At least they think of Mercedes

Colombia’s archaeologists have been fearing looting for years. Now they add a major threat: Guaqueros influencers

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The Colombian Institute of Anthropology and History (ICANH) launched A statement To celebrate a relevant finding for researchers studying the country’s history: 114 archaeological pieces, especially ceramics, discovered in the south of Huilain the Andean region. So far nothing striking. The funny thing is that these treasures were not found anthropologists or archaeologists, but agents of the National Police and the Attorney General’s Office. Nor were they extracted from an ancient indigenous grave, a pre -Hispanic necropolis or A cave unexplored. No. The pieces were in the houses of two Influencers. It is the last example of a problem that worries the authorities and Colombian archaeologists: the rise of Influencers Guaqueros. Network slopes. Huila’s is just one more example of a phenomenon that has called attention of the Colombian press And he has done Jump alarms Among the defenders of the country’s archaeological heritage: the guaquería through the networks. Or otherwise, the people who are dedicated to lounge deposits and presume the process and the results through Tiktok or other platforms. It is concerned about the damage that they can cause to the Colombian heritage during their excavations, rudimentary and without the supervision of professional archaeologists and anthropologists; But worry about the speaker they find on the networks, which allows them to spread their activity and attract the attention of possible buyers or followers willing to point out the location of other deposits. @Laboyanos.com They capture guaqueros “influencers” in Saladoblanco Huila. They seized 144 archaeological pieces. In an operation carried out in the last hours in the rural area of ​​this municipality, the authorities managed to capture two known men in social networks for making Guaqueria and publishing the findings on their social networks. According to the report, 144 archaeological pieces and a replica were seized that the subjects allegedly passed the community and their followers. According to research, men promoted the looting and illicit traffic of archaeological goods through their publications, because in videos and photographs they were seen taking the assets of their original context, which caused the loss of invaluable information about the history of those objects and pre -Hispanic cultures to which they belonged. #Saladoblancohuila #Huilacolombia🇨🇴 #Guaqueros #Guaquerosencolombia #archeology #Laboyanoscom ♬ Original sound – Laboyanos.com Is it a new phenomenon? Yes. And no. The guaquería itself is not something new. The looting of indigenous graves in search of treasures It can go back To the colonial era, although there are those who point out that the boom of the guaquería would arrive much later, between the end of the 19th and early twentieth centuries. During a time of fact the search for treasures in The guacas (The graves of the ancient indigenous people) became a key activity for the economy of places like Quindó. Its history is extensive enough to Your approachlegacy and impact has varied over time. The guaqueros did not always seek their personal enrichment and in a way they played a key role in the history of archeology. “If it had not existed at the beginning of the 20th century, we would not have San Agustín or Teyuna,” I recently recognized to The country Alhena Caicedo, from ICANH. “At first what they did was find where the great deposits were. In the 19th it was the one that allowed, among other things, that archeology appeared.” What is new is that guaqueros use platforms like Tiktok to show their work, share their findings and disseminate an activity whose impact on heritage They already warn archaeologists. Huila’s is a clear example. According to Incahthe Influencers to those who withdrew the 144 pieces “promoted the looting and illicit traffic of archaeological goods through their publications.” “They were recorded by damaging and looting the goods and then making it public.” Is it common? In An article About the phenomenon published in March, Time He speaks of “hundreds” of videos disseminated over the last years, some with millions of reproductions and that show that the problem has spread to regions such as Antioquia, Huila, Caldas or Cundinamarca. Not just that. The newspaper ensures that between 2020 and 2024 the ICANH identified 13 accounts (some with several hundred thousand followers) related to the guaquería. “Irreparable damage”. What means and authorities do so much attention to the subject is explained for a simple reason: the guaqueros presume from the ceramics they find during their campaigns, but often when they are extracted by a valuable source of information for experts. After all, professional archaeologists obtain data from both the vessels themselves and their surroundings. “The problem with guaquería and improper extraction is that people do not know that the value of each piece is not only in itself, but especially in the context in which it is found,” Underline ICANH director. “The looting of archaeological pieces constitutes irreparable damage to the reconstruction and understanding of the past of the different human groups that occupied our territory,” insist From the Colombian Institute. “This practice produces irreversible losses of unique information about archaeological objects and its sites of origin.” With each looting, experts emphasize, stubble on the study of society, economy, religion and culture of indigenous people. “It’s not about our roots”. In videos you can see guaqueros manipulating mud vessels, necklaces or even bones, pieces that can lose part of their historical value if they are extracted rudimentary and without the supervision of professionals. “Data on the history and rituals of the indigenous peoples who inhabited these lands are being lost. It is not only about objects, but of knowledge about our roots,” warns Juan Pablo Ospina, coordinator of the ICANH Archeology Group in an interview in Huila Diario. Beyond the impact it may have for Colombian history, the looting of heritage can lead to legal consequences, such as warns The ICANH, who recalls that Law 397 of 1997 establishes that the pieces with archaeological value are “unattainable, imprescriptible and inalienable.” “Its alteration, undue manipulation, marketing or unauthorized export can generate irreversible effects and carry economic sanctions of up to 500 … Read more

In the exciting world of the supernovas this newly discovered has something unique: its form is perfect

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Identifying a Supernova is an event that astronomers usually celebrate with enthusiasm. And it is not for less if we consider that it is One of the most violent events with which we can run into the cosmos. Knowing them better is very important because it can help us understand more precisely what the latest stages of The life of mass starsand also the mechanisms that explain how the material caused by stellar synthesis can lead to new star systems. The mathematical tools handled by astrophysics current nuclear fusion that take place in the nucleus of mass stars. During the stage known as the main sequence, stars obtain their energy from the fusion of hydrogen nuclei. As this chemical element is consumed, the star begins to produce helium nuclei, and, of course, its composition begins to evolve. During this process a huge amount of energy is released and the star is forced to continuously readjust to maintain hydrostatic balance, a phenomenon that is the result of the coexistence of two opposite forces capable of compensating. One of them is the gravitational contraction, which compresses the subject of the star, pressing it without rest. And the other is the radiation and gase pressure, which is the fruit of the ignition of the nuclear oven and tries to expand the star. ‘Teleios’ is the perfect supernova If the star is massive enough will begin to consume its helium reserves and produce new carbon nuclei, while maintaining the hydrostatic balance we have talked about. And if the star has enough mass will not stop in carbon production. When this element is exhausted in the nucleus, it will be readjusted, compressing and increasing once again its temperature to stop the gravitational collapse. From this moment the carbon nuclei will enter into ignition through nuclear fusion processes and the production of even heavier chemical elements will begin. While in the star’s core is being carried out Carbon fusionin the immediately superior layer the ignition of the helium is maintained. And above this, of hydrogen. The iron core suddenly contracts under the enormous pressure that all layers of material that it has above the material exerted on it During star nucleosynthesis, stars acquire a layer -shaped structure similar to that of an onion. In the nucleus lies the heaviest element, and from there we are ascending by layers finding more and lighter elements. If the star has accumulated sufficient mass there will come a time when the nucleus will be essentially constituted by iron, and from this chemical element it is not possible to obtain more energy through nuclear fusion processes. At that time the radiation and gase pressure is not enough to counteract gravitational contraction, so Iron core suddenly contracts under the enormous pressure that all layers of material that it has above. The star has lost the hydrostatic balance. At this moment all this matter loses the support that the nucleus exercised, which is now much more compact, and falls on it with enormous speed. When all that star material touches the surface of the nucleus there is a rebound effect that causes it to be fired with a huge energy towards the stellar medium, being disseminated. A supernova has just been produced. Some of them are so energetic that for a few seconds they emit more light than the entire galaxy that contains them. This was probably what happened to ‘Teleios’, the remnant of a supernova recently discovered by an astronomer team from the University of Sidney (Australia). The remnant is nothing more than the material that is spread in a region of space after the production of a supernova In the field of Supernovas, the remainder is nothing more than the material that is scattered in a region of space after the production of a supernova. It usually acquires the shape of an expanding bubble in which it is possible to identify an external and brilliant region in which the shock wave and a diffuse interior section occurs constituted by dense and cold dust and dust. The image we publish on the cover of this article recreates a supernova in the most reliable way possible, and in it we can clearly observe the two regions in which we have just inquired. Astronomers from the University of Sidney have identified the remnant ‘Teleios’ using the Australian Askap telescope (Australian Square Kilometre Array Pathfinder), and have realized something very interesting: its geometry is almost perfectly circular. It is very unusual that the material left after the production of a supernova acquires such a perfect geometry. Although these astrophysics shuffle several scenarios that could explain this morphology, in Your scientific article They propose to carry out more observations to determine why ‘Teleios’ is so different from other remnants. The identification of the conditions that have given rise to this cosmic object can help cosmologists to understand better What happens during the production of a Supernova and what parameters delimit the evolution of the remnant that will remain in space long after this great explosion occurs. In fact, these Australian astrophysicists have estimated that ‘Teleios’ is at a distance between 7,170 and 25,100 light years. Image | Generated by Xataka with Dall-e More information | Arxiv In Xataka | The CERN detector took 20 years to be built. It is one of the most complex machines created by the human being

Five Mediamarkt chollos to take advantage of their Apple Days and Top sales during the weekend: mobile, computers and more

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Mediumkt has launched some of the best offers of the last weeks. Many concentrate on the Apple Days campaign, but others also in its Top Sales section. In this article we have reviewed the store and these are five of the best offers we can find during the weekend. Mac Mini M4 by 629 eurosa very powerful and compact computer to work. iPhone 16E by 629 eurosthe economic mobile of the current Apple generation is now cheaper. Xiaomi a Pro by 379 eurosa most interesting price considering that it mounts a 55 -inch QLED screen. Xiaomi Redmi Note 14 by 199 eurosa good price if what we are looking for is an economic mobile with good storage capacity. Sony Wh-Ch520 by 39.99 eurosSony Bluetooth headphones almost at half price. Mac Mini M4 During the Apple Days, Mediamarkt has launched one of the best offers of the week with the Mac Mini M4 at a price of 629 euros. We have rarely seen it at a similar price (we have usually found it for approximately 650 euros) and it is a great purchase option if we look for a solvent equipment to work. He Mac Mini M4 Not only is it compact, but it is also very silent and powerful. The latter is thanks to M4 chip which offers great performance and compatibility with Apple Intelligence. Includes five Thunderbolt ports (two in the front and three in the rear). * Some price may have changed from the last review iPhone 16E There was a lot of expectation to meet the iPhone 16Eespecially for the price at which it would officially come out. Although this price was higher than we expected, Apple’s mobile is already a good discount. In the Apple Days of Mediamarkt, for example, you can buy for 629 euros. He iPhone 16E It is a good mobile that comes with the same Chip A18 that we find in the iPhone 16so it also offers good performance and is compatible with Apple Intelligence. Has a screen Super Retina XDR OLED of 6.1 inches and has, in this case, 128 GB of internal storage. * Some price may have changed from the last review Xiaomi a Pro On the other hand, if what you are looking for is a good TV, which is also cheap, Mediamarkt has the Xiaomi TV A Pro (2025) by 379 euros In its 55 -inch configuration, a good price to be a model with QLED screen4K resolution, vision angles (horizontal and vertical) of 178º, operating system Google TV and Google Assistant and integrated chromect. Xiaomi TV A Pro (QLED, 55 inches) * Some price may have changed from the last review Xiaomi Redmi Note 14 Not all mobile phones in Mediamarkt are expensive, there is also a good space for economic models. A good example is found in the Xiaomi Redmi Note 14. Has dropped to 199 euros and stands out for mounting a 6.67 -inch OLED screen, for having 256 GB of internal storage and for its battery that supports fast charge of 45w. Xiaomi Redmi Note 14 (256 GB) * Some price may have changed from the last review Sony Wh-Ch520 We can also find some offers in Bluetooth headphones. One of the most interesting is that of the Sony Wh-Ch520headphones that have an official price of 70 euros, but that have dropped to the 39.99 euros. Among its specifications, the most remarkable is that they have a battery that offers up to 50 hours of autonomythey have multipoint connection and come with fast charging. * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Images | Mediamarkt and Buyadicción (header), Apple, Xiaomi, Sony In Xataka | The best Xiaomi mobile price: purchase and comparative guide In Xataka | Best laptops in quality price. Which to buy depending on the use and eight recommended models

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