so you can watch our channel for free with technology and science content

We are very happy to announce that Xataka TV is now available on all Samsung televisions with Samsung TV Plus. This is our FAST channel with a selection of our technology and science audiovisual content. After debuting in the entertainment services of Xiaomi, TCL, Plex and Tivify, it now arrives at Samsung, which will make it easier for more people to access our most successful formats for free. YouTube channel. How to watch Xataka TV on your Samsung TV? You don’t need to register or subscribe to anything. If you have a Samsung TV, you just have to go to Samsung TV Plusthe free platform to watch movies, series, sports and more from Samsung, and search within the Entertainment channels. There you will see our logo in green, although you can also access directly by going to channel 4205. Your remote probably has direct access to Samsung TV Plus, so it’s even easier. Once you click on Xataka TV, you will automatically begin to see the selection of content that we have prepared for you, including the best of our recent gala of the Xataka NordVPN Awards 2025. Samsung TV Plus is also available on Galaxy smartphones and tablets with Android 11 or higher. Keep in mind that you will need an Internet connection to watch Samsung TV Plus and Xataka TV. What if I don’t have a Samsung TV? At Webedia and Xataka we are committed to bringing our content to more platforms than traditional ones, and connected television is one of them. For this reason, our Xataka TV channel is also now available on: Xiaomi TV+ TCL TV Plus Plex Tivify (dial 97) What can you see on Xataka TV? As a leading technology medium in Spanish and with more than 20 years of experience, we take care of our productions so that you have a good time with us and, above all, help you as best as possible with: Test and comparisons of tech products Tricks and tips to squeeze our products Reports Purchase recommendations Curiosities about science and technology We are waiting for you on Xataka TV! In Xataka | Samsung TV Plus: what it is, how it works and what channels it offers Tivify: what it is and how to use it to watch your channels for free and without registration

There’s a reason you spend hours watching reels on Instagram until 3:00 AM: the science of doomscrolling

It’s one in the morning. We should be sleeping but the finger is still sliding across the screen, scrolling through videos on TikTokreels on Instagram or posts on X. A viral meme, a new fire in the area or a new political crisis has us hooked on the screen. And although we may be exhausted, it cannot be stopped. If this scene sounds familiar to you, then welcome to the club. doomscrolling. A term that became massively popular during the pandemic and which can be defined as the habit of consuming prolonged form negative news or distressing, mainly through social networks. But behind this process, which may be very common in society right now, there are numerous chemical processes in the brain that science has not hesitated to investigate. The trap mechanism. To understand why we do doomscrollingwe must first understand that our brain did not evolve to have X or TikTok, but rather it evolved to survive. And it is not so long ago that humans were hunting for food or fleeing from a threat in nature, and it is something that our brain is still very much aware of. According to the most recent scientific literaturethe fact of sliding our screen down activates our reward brain circuits such as the dopaminergic system in each interaction. This drives us at all times to continue searching for information and evolutionarily knowing “where the danger is” was vital. The problem is that in this case the algorithm has no purpose, and we can spend 24 hours watching this type of news. But the reward system, which gives us ‘pleasure’ when knowing where the danger is, is not alone. It is accompanied by the amygdala which is the fear center in our brain. When seeing all this information, such as a war nearby in our territory, the brain interprets it as a potential threat that results in a large release of cortisol. This hormone is precisely known as the ‘stress hormone’, because it keeps the body in a state of hypervigilance. The result of these two circuits is quite clear as point out publications in Frontiers in Psychiatry and Brain Behavior: The brain seeks relief from information, but only finds more threats. This results in a toxic cycle being generated in which one seeks to calm down, becomes more scared, and searches again. The rotten brain. On social networks there is already a lot of talk of the term brain rot which translates to ‘brain rot’ like a real meme. but science has a very different opinionsince recent research suggests that repeated exposure to these fragmented stimuli with high emotional impact, with 15-second videos and alarmist headlines, have a high physical cost. The impact is located above all in executive functions (planning, organization, decision making…). And the constant alternation of these catastrophic contexts forces the brain to jump from one idea to another in milliseconds, and it is not something free. The cost we have to pay can be summarized in three points: Mental fatigue due to the high consumption of glucose that the brain has to make by having to constantly change focus. Deterioration of the prefrontal cortex, which is associated with a reduction in the efficiency of the area responsible for planning and impulse control. Processing blockage when the brain is on hyperalert. This makes it difficult to transfer information to long-term memory. Do we no longer know how to concentrate? This is the question we can all ask ourselves due to this phenomenon. The short answer from science is: we know, but it is much harder for us to “get started.” Studies on digital multitasking indicate that it is not that we have lost ability physiological of sustained attention, but we have trained our brain to expect interruptions. Deep attention (what you need to read a book for example) requires a “warm-up” time. He doomscrolling and the constant stream of notifications resets that counter constantly. Research collected in BMC Public Health they point out that attention remains “anchored” waiting for the next update. Even when you are not looking at your phone, a part of your cognitive resources is focused on it, reducing your performance on the task in front of you. It is not an irreversible decline, it is an atrophy due to lack of use of deep concentration circuits. There is hope. Despite the apocalyptic tone of the studies themselves on the subject, the scientific conclusion It’s not that we’re doomed. to be distracted automatons glued to a phone. The great advantage that humans have is neuroplasticity. With this term we mean that just as the brain learns to scroll compulsively, it can “unlearn.” Experts agree that the damage is not permanent unless the behavior becomes chronic for years without intervention. Evidence-supported strategies for breaking the cortisol-dopamine loop include: Set strict times to inform yourself and never before bed. Do exercises mindfulness as a tool to restore the default neural network. Allowing the brain to rest and ‘get bored’ without stimuli to help cleanse itself and regain the ability to focus. Images | Yazid N In Xataka | Young people have decided to stop posting (so much) on Facebook and Instagram. “AI-generated garbage” has free rein

is getting married, according to science

We live obsessed with longevity, trying to extend life as much as possible, despite the fact that Our own biology puts a very clear brake on us that is very difficult to remove.. restrictive diets, intermittent fasting either treatments Very expensive are some of the actions we use on a daily basis to be able to last more and more years in this life. However, there is a factor that we did not expect to influence living longer: getting married and choosing your life partner well. This is an idea that spread Dan Buettner, the expert who popularized the concept of “Blue Zones” like Japan and that at 64 years old he dedicated decades to studying the regions of the world where people live the longest. And the truth is that the conclusion he saw is that the basis of longevity is having a strong marriage (among other things). But this conclusion, which has been drawn through everything he has seen on his travels, must also be found to have a correlation within scientific studies. And the truth is that what he says is not very crazy, and it makes us consider the fact of having to better look for who we are going to share our entire life with. And Buettner points out that on average married people live between 2 and 5 years longer than those who remain single, divorced or widowed. In blue zones, family unity is the central value. Buettner argues that marriage offers long-term emotional stability and helps build social support networks, which drastically reduces the risk of isolation, one of the great enemies of health in old age. In addition, there is a component of shared responsibility: having a partner implies mutual motivation to take care of yourself, from food to having to go to the doctor because your partner reminds you or insists. All because in the end they are worrying about themselves. The studies. Buettner’s claims are not mere anecdotal observations; They are supported by massive meta-analyses that have scrutinized the health of millions of individuals. Specifically, an exhaustive study published in Global Health Research and Policy in 2020 analyzed data from 7,881,040 individuals across 21 prospective cohort studies. The results were compelling: Compared with married people, being unmarried (including single, divorced, and widowed) was significantly associated with higher mortality from all causes such as cancer and cardiovascular disease. Difference by sex. In addition to providing this strong conclusion, it was also clearly found that the association between not being married and mortality was stronger in men than in women. Precisely, unmarried men showed a 20% higher risk of dying from a cardiac event compared to unmarried women. As if having a woman by your side was a protective factor from this event. But it does not stop there, since men who had married also had a 31% excess risk of mortality from stroke compared to women who had never married. Although staying single is not the only thing that can attract attention. Being divorced or separated was associated with a higher risk of mortality from any cause in men. But when the marriage dissolved, the risk of dying from cancer and cardiovascular diseases increased. Another study. Published in Social Science & Medicine and focused specifically on the elderly population, reinforced this initial thesis that we proposed. To do this, 53 independent comparisons were analyzed with more than 250,000 older subjects, finding that being married was a very important protective factor. If we go into detail, the data indicated that there was a 12% reduction in the risk of dying due to being married. When breaking down the data by marital status compared to married, the risk of death was increasing in all groups. Because. Science wants to understand the reasons that lead to this relationship. One of the first is focused on chronic stress and cortisol, which is undoubtedly a silent killer. It has been suggested that not being married contributes to less intimate social networks and loneliness, which increases levels of stress hormones, especially as the end of life approaches. In addition, it has also been seen that women have a stronger immune system than men, in part because testosterone causes immunosuppression. On the other hand, there are the estrogens in women that have many protective functions. From a social perspective, married men tend to benefit more because they often depend on their wives for their primary social support. Men who live alone are more likely to ignore medical advice and have smaller, less intimate social networks. Images | Eugenia Pan’kiv Aron Visuals In Xataka | Not all brain cells age at the same time: we have found a “hot spot” of aging

The best science comedian does not have any scientific training. And that’s the key to your success.

Tom Gauld is one of the most accessible and yet peculiar cartoonists of today. His vignettes are a mixture of a wink for the initiated and simple, white humor.which often makes his cartoons a mix of “everyone can understand them” and “if you’re interested in science and literature, sure.” A real rarity in these times when you have to show up at franchise fan clubs with a very clear identification and resume. Because Gauld may talk about quantum physics, multiverses and the secrets of the cosmos, but he doesn’t leave anyone out either, all thanks to deceptively simple, but highly expressive graphics. Able to make an Escherian architectural nonsense believable or to perfectly portray the interior of an impossible dimension with just a couple of lines, Gauld reduces the complex to a couple of gentle strokes, and hence his popularity on the internet and in media of indisputable prestige such as ‘The Guardian’where he makes literary jokes, or ‘New Scientist‘, where it focuses more on science and technology. It is precisely a compilation of jokes of this last type, ‘Physics for cats’, which Salamandra is now publishing. Thanks to this brand new volume we have had the opportunity to speak with him and have him explain his creative processes and his career as a scientific comedian… who does not have much knowledge of science. We started, of course, by asking him how his collaboration with ‘New Scientist’ began and what impact it has had on the way he approaches scientific topics in his comics. It tells us that we have to go back very far in time. “My grandfather was a scientist, a marine biologist, and he always read the ‘New Scientist’. So when he went home, the magazine was always there, and when he finished reading the magazine, he would give it to my father, who was also interested in science. When I was little, I would look at the pictures and diagrams and, from time to time, I would read a little bit of the text.” And from there, a few years later and now a professional cartoonist, he began to collaborate with them. Gauld states that a magazine of this type is a splendid workplace for an illustrator: “Some concepts about reality or other universes cannot be photographed, so in These types of magazines have a good tradition of using illustrationsand in fact most of its covers are illustrations rather than photographs. Then, I don’t remember exactly why, I thought it was strange that they didn’t have a comic strip in the magazine.” He proposed it a decade ago and it was accepted, but, he says, “I got a little scared because I stopped studying science when I was about 16, so I’m not an expert at all.” How to draw science It is obvious that this approach to science from a non-scientist perspective will entail difficulties. But contrary to what it might seem, “the really difficult thing with vignettes is not getting the scientific details right.” His process is: “I read the magazine, I follow scientists on social media, I listen to podcasts and radio shows about science, and anything that I think could make a joke I write down in my notebook.” And his approach is clear: “I’m giving my own light-hearted, fun take on something that’s quite serious and thoughtful. I try to do it without being derogatory, like when you make fun of a friend you respect.” Which inevitably brings us to the next question: how do you balance scientific precision with the artistic freedom to create such abstract concepts? And in fact, here the lack of scientific training is revealed as an advantage: “When creating the strips, the fact that I have no scientific training, that I am an ordinary person, not a professional, perhaps helps me judge the level of knowledge at which the jokes should be.” And he adds: “I never want to make a cartoon that makes people feel stupid.which makes one think that a doctorate is needed to understand it”. What happens then when he stumbles upon concepts that even he can’t understand? “When some real science is mentioned in the cartoon, I like to get it right, so I do some research on the Internet or ask someone at New Scientist to check my formulas or whatever. Or I do it so badly that it’s obvious I’m not trying to get it right. In fact, last night an astrophysicist mentioned that one of the formulas in the background of one of my strips was correct and that he liked it, which I was very happy about.” When we ask him if there are any scientific ideas or theories related to physics that he finds especially inspiring, he tells us that two come to mind. “One that I think I keep coming back to in the cartoons is, and I guess this is more of a philosophical question than a physical one: What is reality? That and the idea of ​​many worlds. The other is quantum theory, which I still don’t understand. I’ve made some jokes about it and I’m proud of them, but I think they could be improved if I ever managed to understand all of quantum theory. Which may never happen, but I keep trying.” And here we enter into a personal question, but we couldn’t help but ask him: does Tom Gauld like Gary Larson’s humor? (Larson, for those who don’t know, is the creator of ‘The Far Side’, absolute master of comics with background geeka mix of surreal humor and deep knowledge of biology and science absolutely unmatched). “I’ve mentioned Gary Larson as an influence in almost every interview I’ve done today,” he confesses, “so I’m glad you brought it up.” Typical Gary Larson: “‘Hey! What is this, Higgins? Physics equations?… Do you like your job as a cartoonist, Higgins?” And he adds: “The cartoons from ‘The Far Side’ appeared in my local newspaper when I was a teenager and I have … Read more

While others sell us fireworks, she is rewriting science

OpenAI does not seek to create an AGI. Make sure we don’t stop talking about her. It is the maximum exponent of the “productization” of AI. It and other rivals focus on offering flashy options that improve our productivity but don’t change the world. Which is precisely what some companies are trying to do, among which one stands out in particular: DeepMind. The AI ​​that helped science. For the past two years the tech industry has resembled a fireworks contest. Every few days or weeks a new model promises to write better emails, generate more realistic videos or have more and more human conversations. The cycle of novelty is often ephemeral —Studio Ghibli style images were a good example—but far from those “wow effects” there is a silent AI that does not seek to impress on social networks, but rather to help solve scientific problems that have been blocking new advances for decades. The Thinking Game. The recent documentary about DeepMind titled ‘The Thinking Game’ and available for free on YouTube precisely shows us that other side of AI. Although the tone is not exempt from that epic that we already experienced with the documentary ‘AlphaGo’, what it tells us serves as a reminder of this dichotomy that the industry experiences. While the AI ​​bubble inflates in search of immediate profitability, DeepMind seems to have maintained its original spirit. One that wants to use AI not to imitate the human being, but to – in this case – decipher the code of biology. From Pong to AlphaFold. This 84-minute documentary tells the story of DeepMind through the career of its co-founder, Demis Hassabis. This journey is fascinating and shows us how the startup began to develop AI models that taught themselves to play retro video games like Pong or Breakout (Arkanoid) to, little by little, evolve towards much more ambitious challenges. Specifically, being able to predict the structure of proteins through deep learning. AI can change science. The challenge DeepMind engineers faced seemed impossible. Predicting the structure of these proteins was often misleading and required enormous computing power, but with AlphaFold 1 (2018) and especially with AlphaFold 2 (2020) DeepMind achieved spectacular results. In 2021 the company published both the source code of the project and a database with the structure of more than 200 million proteins available for any laboratory or researcher. It was an absolute gift for the scientific world. Then AlphaFold 3 would arrivemore oriented towards drug development and with a somewhat more commercial point. A Nobel Prize-winning AI. Two of the 2024 Nobel Prize winners in chemistry work at DeepMind. These are Demis Hassabis and John M. Jumper, who received the award for their contributions to the prediction of protein structure. That work with AlphaFold demonstrated that AI could indeed contribute to scientific advancement, and put DeepMind on the throne of that segment more than ever. A radically different approach. It is important to do pedagogy here. While LLMs (large language models like GPT-5) work by predicting the most likely next word in a sentence, “AI for science” predicts physical and chemical behaviors: while LLMs can hallucinate and lie like it’s nothing, scientific AI submits to the laws of physics. From observation to simulation. Traditionally, science advanced through observation, hypothesis and experiment, which was often slow and expensive. With AI, an intermediate phase is introduced, massive simulation, which acts as a catalyst for this process. Thanks to AI, it is possible to rule out millions of dead ends before the scientist sets foot in the laboratory. DeepMind has seen this so clearly that created Isomorphic Labsa business spin-off dedicated exclusively to using this technology to discover new drugs. DeepMind is not alone. Although the company co-founded by Demis Hassabis is the clear reference in this area, there are other examples that follow the same path: Microsoft– Achieved a striking milestone in collaboration with PNNL (Pacific Northwest National Laboratory) by AI-screening 32 million potential inorganic materials and finding a new one capable of reducing the use of lithium in batteries by 70%. M.I.T.: The prestigious technical institute used deep learning models to discover halicinean antibiotic capable of eliminating bacteria resistant to all known treatments. NVIDIA: The firm not only imperially dominates the AI ​​chip market, but has built a “digital twin” of the Earth called Earth-2. Its AI models (FourCastNet) predict extreme weather events thousands of times faster and consuming much less than traditional supercomputers. The promise (a little) fulfilled. Almost since ChatGPT appeared, we were promised that AI would change the world. At the moment it has not done much, but what has been achieved by DeepMind and other companies in the field of science does seem to pose real revolutions. I recommend not missing the documentary: it is fantastic. In Xataka | What the AI ​​pioneers awarded today with the Nobel Prize say now about AI and its risks

China had a tank more typical of science fiction. Now he has added a hypersonic missile in a video that attacks Japan

China presented in August to the world a family of vehicles that broke with the classic logic of armored warfare: the Type 100 hybrid tank and its support vehicles ZBD-100. With barely 40 tons, these armored vehicles mix the lightness of a rapid deployment tank with an electronic architecture capable of converting them into nodes of a system hyperconnected combat. Now it has presented something more disturbing: a hypersonic missile aimed at a target. The Type 100 as a symbol. The robotic turret of the armored vehicles presented, their optical and laser sensors distributed throughout the hull and the fusion of data with drones and external radars give them a situational awareness which surpasses that of many Western cars. China does not seek to reproduce the heavy paradigm of the Abrams or the Leopard, but get ahead of him: Prioritizes sensors over armor, information on raw power, mobility over mass and active survivability against direct fire. His GL-6 system active protection, based on AESA radars that monitor an entire hemisphere, represents this new philosophy: in a battlefield saturated by drones, mines and loitering missiles, armor is no longer measured in centimeters of steel, but in milliseconds of electronic reaction. And more. The autonomy of its attack modules, the use of loads capable of imitating the power of the Abrams despite the smaller caliber and the incorporation of kamikaze drones from the support vehicles point to an ecosystem expressly conceived for contemporary war. He Type 100 also shows the Chinese commitment to lighter platforms that can operate in mountains, rice fields or coastlines, with less demanding logistics and easier to deploy near Taiwan or in possible points of friction with India. Overall, this armored vehicle reflects a theoretical break: China is betting on complete computerization of land combat and the massive use of distributed systems that share data in real time, something that can be decisive if it can be reliably integrated into doctrine and training. Type 100 The leap: low-cost hypersonics. Now, private company Lingkong Tianxing’s announcement that it is already mass manufacturing YKJ-1000 hypersonic missiles at a cost equivalent to 10% of a conventional missile It represents a profound alteration of the military balance in the Asia-Pacific. The fact that a private actor has entered into the systematic production of Mach 5-7 weapons points an industrial transition important: China is moving the frontier of war innovation outside of state monopolies, accelerating technological cycles and reducing prices to levels unthinkable for equivalent programs in the United States, where long-range hypersonics around 40 million dollars per unit. A clear threat. The YKJ-1000 not only stands out for its speed and its range of up to 1,300 kilometers, enough to cover the entirety of Japan from northern China, but also for its architecture autonomy-oriented: detection, target selection, defense evasion and evasive maneuvers in mid-flight. Its ability to travel inside standard shipping containers makes it a weapon hidden deploymentdispersible and easily moved by road or ship, adding strategic uncertainty in any crisis scenario. Plus: the images that close the promotional video (several missiles flying towards targets in Japan) constitute an unmistakable message in the midst of increasing regional tensions. The promise of a future version with integrated artificial intelligence anticipates a generation of cheap, extremely fast missiles designed to overwhelm or deceive defensesgenerating a new family of threats that could multiply in numbers that current anti-aircraft systems are simply not prepared to absorb. Frame from the missile video Japan, Taiwan and an escalation. The appearance of the YKJ-1000 comes at a time when relations between China and Japan are going through its most delicate phase in a decade. The statements of the new Japanese Prime Minister, Sanae Takaichi, hinting at a military response if Taiwan were attacked, have been interpreted in Beijing as a strategic shift of enormous significance. It we have counted: China has responded with travel advisories, flight cancellations and a public campaign suggesting Tokyo is getting dangerously close. to a red line. For Japan, China’s accelerated militarization is not an abstract phenomenon: it is a direct challenge to its sea routes, its energy security and its commitment to deterrence in the Taiwan Strait. For China, on the other hand, Japan is an actor that can decisively influence the American presence in the region. An intimidating missile. In this context, the massive deployment of the YKJ-1000 (capable of reaching bases in Okinawa, Kyushu or Hokkaido in minutes) takes on a obvious political component: It is a weapon designed both to operate and to intimidate. Furthermore, the mobile container system complicates pre-detection, while the multiplication of low-cost hypersonic platforms increases the pressure on Tokyo to reinforce anti-missile systems which, even in their most advanced configuration, were designed for slower, more predictable threats. He result is a spiral in which Japan accelerates its rearmament, the United States reinforces its air and naval presence and China responds by further expanding its panoply of both conventional and hypersonic missiles. Armored and missiles in it ship. What makes these developments more than isolated advances is their internal coherence. So much the Type 100 as the YKJ-1000 They reflect the same emerging doctrine: war based on saturation, speed, autonomy and distributed networks. The tank is not just a vehicle, it is a sensory node capable of sharing data with drones, radars and aerial platforms. And the hypersonic missile is not just a projectile, it is a mobile, cheap and difficult to intercept weapon designed to exploit vulnerabilities in complex systems. China is incorporating into its planning the idea that future conflicts will be decided by the ability to integrate sensors, automate decisions, and generate waves of simultaneous threats that outpace the adversary’s response. An island in the background. Thus, in a hypothetical attack on Taiwan, or in a limited confrontation with Japan, this synergy could allow China to combine computerized ground forces with hypersonic attacks of saturation intended to degrade enemy defenses, air bases and command nodes in the first minutes of the crisis. An explosive … Read more

Science wants to put ‘microrobots’ into our bodies to medicate us. They have already given good results

One of the great problems of modern medicine in the treatment of different human ailments is the “killing flies with cannon” approach. This means that when we have a headache and we take paracetamol, this medicine is distributed throughout the body and not only where it needs to take effect. But this is something that may end up changing thanks to microrobots. The importance. That the medication ‘walks’ throughout the body seems completely irrelevant as long as it has its analgesic effect, but the reality is that it is the responsible for many side effects that are generated. For example, taking a simple ibuprofen to relieve pain or reduce inflammation seems like a wonderful thing. But the fact that it has a general effect on the body also causes the blocking of mucus production in the stomach, which can lead to one of its most ‘famous’ side effects, such as the generation of stomach ulcers when abused. And when we talk about the much more serious side effects, it can cause many clinical trials of new drugs to have to be stopped because of this. But simply with a system that makes the medication act in a specific place in the body, this problem could be alleviated (in part). A new advance. A team of researchers from ETH Zurich has published in the magazine Science a solution that brings us a little closer to the setting of the movie Amazing Journey: a platform of magnetic microrobots ready for clinical use that are capable of traveling through blood vessels and releasing their cargo into the affected tissue. Bradley J. Nelson, co-author of the study and professor of robotics at ETH Zurich, says this is just the beginning: “We’re just the tip of the iceberg. I think surgeons are going to look at this and I’m sure they’ll have a lot of ideas about how to use it.” A simple grain of sand. In this case we are not talking about a metal robot with gears, but rather a capsule of approximately 1.69 mm in diameter that is designed to dissolve inside the body. We can rest assured that we will not have thousands of grains of metal sand in our bloodstream. But to get here, the engineering behind it is not at all simple. One of the challenges, logically, is that its application would be viable within the human body. To do this, the team had to balance three key factors such as: biocompatibility, drug loading capacity and magnetic control. The result was a spherical gelatin matrix that has three components: Iron oxide nanoparticles to respond to magnetic fields. Tantalum: a dense metal that can be ‘seen’ through radiology techniques in order to follow its path through the body. The medication you want to apply. How it moves. In addition to the capsule, what is important is how it moves until it reaches the target where it must act. For this, an electromagnetic navigation system called Navion is used. To do this, coils are placed around the patient’s head to generate a magnetic field around it that allows the capsule to move. In this way, a surgeon, for example, will be able to control the capsule almost as if it were a remote-controlled car to be able to reach the desired action point. To do this, there are different ways of moving through the vessels: by rolling, by dragging or by navigating the blood flow itself. A suicide mission. Once this microrobot reaches its destination, the doctor will be able to activate the final phase. Using high-frequency alternating magnetic fields, the iron nanoparticles inside will heat up, which will cause the gelatin matrix to melt in a matter of 40 seconds, releasing the drug at once. In their tests, they managed to transport rtPA (a powerful drug to dissolve thrombi) to a clot in a vascular model, managing to restore blood flow in less than 20 minutes. When will it reach the hospitals? Although the system is quite promising, it will take time to reach patients. The researcher himself points out that clinical trials could begin within three to five years. In addition to thrombi, applications are being considered to treat aneurysms, arteriovenous malformations and very aggressive types of brain cancer. It’s not the first time. The medicine every time tends more towards personalization of treatments. In cancer we already see it with use of therapies such as CAR-T which focuses on training the immune system to specifically attack a person’s tumor cells and not healthy cells. A completely targeted therapy like the one proposed in this system, but in this case it is applied in the daily clinic (although it has a very high cost). The same happens with the immunotherapy with the use of antibodies. In this case, science looks for those particles that are unique to tumor cells and that are not present in healthy cells. In this way, drug weapons can be created that directly attack cancer cells. In Xataka | The rarest element on Earth aims to cure cancer. And Europe is already accelerating its production

the science behind a geological risk that repeats itself every 1,200 years

Although the tsunamis seem like effects that are reserved for the Japanese coasts, the reality is that Spain He also has many ballots to suffer an event of this magnitude on our coasts. Cádiz is one of the locations with the highest risk of suffering a tsunami in Spain, and the authorities wanted to verify that the emergency and response systems they work in case this type of event occurs at any time. In order to verify this, the authorities carried out a drill in mid-November in which the ES-Alert systemseveral schools and all emergency services. And given this great display, the question is mandatory: what are the chances of a tsunami occurring in Cádiz? Cádiz is at the center of this simulation because it is the area with the greatest danger from tsunamis in the country, due to the history behind it and the seismicity of the Azores-Gibraltar area. For this reason, the Junta de Andalucía has prepared a Emergency Plan for the Risk of Tsunami (PEMA) and has chosen Cádiz for the largest tsunami simulation carried out in Spain. Because. In the past, geological records indicate that at least five large tsunamis have occurred in the Gulf of Cádiz in the last 7,000 years. All of these associated with megaearthquakes at the plate boundary between Africa and Eurasia. Added to this is the historical reference: the tsunami linked to the Lisbon earthquake of November 1, 1755which completely flooded Cádiz and part of the Andalusian coast with waves of several meters in a matter of dozens of minutes. The paleoseismology works of the CSIC and several universities place the recurrence interval of these events between 1,200 and 1,500 yearslong enough to be socially forgotten, but too short to be ignored in risk planning. This places the southwest of the peninsula as one of the most exposed areas in Europe to tsunamis, despite the fact that the “perceived risk” on the street has historically been very low. And this is precisely something that has been analyzed in the layers of sand and marine remains left inland and that gives us information about what happened thousands of years ago. Although logically always with a time frame that is approximate. Why now. The fact of doing the simulation in this month of November may make us think that scientists have found evidence that a large tsunami is coming to Cádiz, but nothing could be further from the truth. What is happening in this case is that a risk that has been known for a long time and for which, until now, hardly anything had been tested on a large scale, is being taken more seriously. That is why this scientific evidence that tells us about the real risk that exists in this case on the coast of Cádiz has been transferred to the regulations. In 2015, the Basic Planning Guideline for Civil Protection against the Risk of Tsunamiwhich recognizes the Gulf of Cádiz as a critical area where the expected wave height exceeds 0.5 meters. A framework that is not limited to pretty maps, but defines decision guidelines according to magnitude and location of earthquakes, chains of command, warning protocols and response time objectives, with the National Geographic Institute, AEMET and the future SINAM network as input sensors. What has been simulated. In this case, Cádiz has simulated an earthquake with an approximate magnitude of 7.5-7.6 to the southwest of Cape San Vicente, very similar to the one in Lisbon in 1755 and which generates a tsunami that points directly to the western Andalusian coast. In this scenario, the propagation models estimate between 45 and 60 minutes from the activation of the alert until the arrival of the first wave from Cádiz, which in practice is the clock with which Civil Protection works. The objective of the exercise was to virtually save as many people as possible in that one-hour window: horizontal evacuation to non-flood areas, vertical evacuation to high floors, beach and port rescues, protection of cultural assets and management of damaged buildings were tested. On paper, all this already existed in manuals and maps; What was missing was to see how a real city behaves when a tsunami warning sounds in the middle of a work morning.​ Images | Matt Paul Catalano In Xataka | There are scientists deliberately causing earthquakes in the Alps and they have a good reason for it

There are exactly five things that you 100% haven’t dreamed of. And science already knows why

He dream world It has its own rules. It is a place where the impossible seems to be the routine, but, paradoxically, some of the most mundane tasks in our lives become impossible to appear in our dreams. And this is something that can cause us many questions about why we have not dreamed of some specific things. The examples. We warn you that this is something that can break your head, because the question is obligatory: have you ever tried to read a text in a dream? (if you remember) o Have you taken out your phone to discover an incomprehensible interface? All this is not a coincidence, because in reality there are some things that we can never dream like we all expected (even if they are very real dreams). It has an explanation. science has several reasons in his lap to convince us why elements of modern life such as the smartphone or computer interfaces have little place in our dreams. Everything focuses on the fact that during the REM sleep phase the activity in the prefrontal networks of the brain are greatly reduced. And it is precisely here where executive control and language are ‘stored’. In this way, if during sleep these neurons are ‘asleep’, then we will not be able to read a text correctly or even hold a smartphone in our hands. When we sleep, it seems that we don’t want to work or be using our cell phone. This is because in this time range the activity of the limbic area, related to the emotional and visual part, is triggered. This results in the content of dreams leaning towards the associative, visual and emotional, rather than tasks that require a great analytical focus such as operating a complex interface. In this way, the material of our waking life is not literally copied from dreams, but rather is integrated in a selective and transformed way, prioritizing emotional charge over functional fidelity. The nightmare of reading. The same neurocognitive principle that we have seen is the one that explains another of the best-known phenomena: the inability to read texts stably. What is basically caused is that the characters literally ‘move’ or distort because the language networks are not being stimulated as much. This applies equally to numbers, mathematical calculations, or the simple task of looking at the time on a digital clock. Stimuli that require fine symbolic precision tend to become illegible or change constantly. Although some studies with lucid dreamers have shown that basic operations can be performed under experimental conditions, outside the laboratory, the stability of the symbols is almost non-existent. No smell or taste. While sight and hearing dominate the dreamscape, other sensory modalities are virtually absent. Systematic studies based on sleep diaries are consistent in showing that olfactory and gustatory experiences are extremely rare. Figures put its occurrence at approximately 1% of all dream reports. Even in laboratory experiments where the olfactory environment is manipulated during the night, most participants do not report smelling anything in their dreams, reinforcing the idea that chemical senses are a rarity in this state. The mirror. It is another quite common phenomenon in dreams: seeing yourself reflected in the mirror is something almost impossible to achieve. In dreams, this is generated predominantly “top-down”, that is, from the brain networks themselves and with very little or no sensory information from the outside. Because of this, high-resolution details, such as a reflected face, text, or an interface, tend to morph or distort as soon as we try to examine them closely. Visual stability is not the norm. The ancestral content. In stark contrast to the absence of cell phones or books, there is one type of content that seems to be overrepresented: threats. Dreaming about being chased, falling, facing dangers or even elements such as storms or snakes is extremely common. And on many occasions we remember it perfectly because we have precisely woken up at the moment sweating or with our heart pounding. This supports the known “Threat Simulation Hypothesis” (TST), proposed by philosopher Antti Revonsuo. This theory suggests that dreams could have an evolutionary function: serving as virtual “training” to rehearse how to respond to danger in real life. However, the scientific literature itself indicates that this hypothesis, although plausible and supported, is also the subject of debate and presents mixed results when compared between different cultures and environments. Images | Shane In Xataka | Years ago we discovered that our ancestors’ dreams were not like ours. There are now thousands of people trying to introduce biphasic sleep into their lives.

science has a different opinion

For a person with celiac diseasesocial life can be a real minefield. Cross contamination is a dangerous enemy that is present in the way food is prepared, but also in the kisses we have with other people. In this way, the question is obligatory: if my partner has eaten bread, pizza or pasta… Is it dangerous for us to kiss if I am celiac? To answer, luckily we have science on our side. Until now, people who have to stay away from gluten for serious medical reasons could be afraid to kiss if their partner had not rinsed their mouth or brushed their teeth before. But science is pretty transparent. in the preliminary study presented at Digestive Disease Week 2025. Their conclusion is quite clear: some gluten can be passed through a kiss between two people, but the amount is so small that it is very unlikely to have relevant clinical consequences. The study. To reach this conclusion, 20 non-celiac people who ate a food with a large amount of gluten were recruited. Immediately afterwards, they had to kiss their celiac partners, allowing the researchers to measure the concentration of gluten in the saliva that had passed from one boba to another. The results were quite clear: in 18 of the 20 couples, the levels in the recipient’s saliva were below the international “safe” threshold, which is 20 mg, and furthermore, none reported symptoms related to intolerance. Although if you drink a little water before kissing, this risk decreases even more. Why 20 mg. This threshold value is not something random, but rather it turns out to be defined by science itself. Here one of the reference studies comes into play, Catassi’s essay and collaborators published in American Journal of Clinical Nutritionwhich administered 10 or 50 mg of gluten daily to adults with treated celiac disease for 90 days. What was seen is that the daily exposure was clearly below that 10 mg range for the majority of patients. A later review in Alimentary Pharmacology & Therapeutics reached similar conclusions: the doses that are beginning to be worrying move in the order of tens of milligrams per day, especially if they are maintained over time, not in single isolated traces. In this way, an isolated kiss has the same concentration of gluten as foods that are categorized as safe. How is it possible that a kiss after eating a large amount of gluten-containing foods is not dangerous? This is the question we ask ourselves after reading these conclusions, and it has an answer, but in studies done on peanutsanother allergen. In this case it was seen that just after eating, the concentration of allergen in the mouth is really high. But after simple measures such as waiting a few minutes, drinking water or brushing your teeth, levels drop drastically. In this way, a kiss does not transfer food, but rather a fraction of a milliliter of saliva. And that saliva, minutes after eating, has already “cleaned” most of the protein that was inside. And this is valid for all allergies that are mediated by immunoglobulin E (which is responsible for generating the allergic response). There is a margin of safety. On a daily basis, people who are intolerable to gluten and who follow a very strict diet to avoid contamination, the truth is that they consume this allergen. Although in a very small quantity. This shows it a study who developed techniques to measure gluten immunogenic peptides (GIP) in urine and feces. The work showed that many people with celiac disease who follow a strict diet have small accidental exposures on a regular basis, the result of cross-contamination in modern life. However, the majority do not show clinical worsening or intestinal damage if these exposures are spontaneous and at very low doses. A kiss, in the worst case scenario, is exactly that: an isolated microdose exposure. The final verdict. What this new study provides is not a revolution, but a reassuring quantification of something that the consensus of experts already sensed. Even the main patient associations, such as the Celiac Disease Foundation or Coeliac UK, have been with a practical message for some time: the risk of kissing is low. The only common sense recommendation, which is still valid, is to avoid kissing right at the moment when the other person is eating gluten or has obvious remains of food in their mouth. You always have to wait a little for the saliva to take effect, but it doesn’t have to be a problem beyond this. Images | Cassie Lopez Wesual Click In Xataka | The difference between celiac disease and gluten intolerance can be difficult to appreciate. But there is a key detail that makes them very different.

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.