Science

Oatmeal has been “removed” to being the queen of breakfasts. Science believes it is more beneficial at dinner

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One of the great nutritional dilemmas is undoubtedly at dinner timesince we want to eat something that is quick, satisfying and that does not make us go to bed with a distressing heaviness. And this is where oats can come into play, a food that has been relegated to breakfast territory by associating with cereals, but scientific evidence suggests that we are wasting all your potentialsince we can take it to the last meal of the day. His secret. To understand why oatmeal is ideal for dinner, you have to look at a microscopic level. And the reason is that oats are rich in beta-glucana type of soluble fiber that generates high viscosity in the intestine. In this way, when oats are eaten, this beta-glucan forms a kind of viscous gel in the digestive tract that achieves dramatically delay gastric emptying and glucose absorption. Unlike classic refined grains that cause a sugar spike followed by a crash, which can lead to midnight hunger, oats offer a slow release of energy to stabilize blood levels after a meal. Goodbye to snacking night. If you’ve ever had a light dinner and two hours later you were raiding the refrigerator, oatmeal has the solution here, since several randomized clinical studies support its amazing satiating capacity. one of them was published in 2016 in the Journal of the American College of Nutrition and focused on analyzing 48 healthy adults who were given a serving of hydrated oats of just 250 kcal. The results showed that the feeling of fullness was significantly increased and hunger was reduced for up to four hours, compared to classic ready-to-eat cereals. This satiety, mediated by the high molecular weight and viscosity of beta-glucan, caused the subjects to reduce their energy intake by 85 kcal on average at the next meal. A better sleep. Going to bed with sky-high sugar levels is not the best idea, neither for our metabolism nor for the quality of our rest. Again, our great ally here is beta-glucan, since the EFSA endorses that consumption of four grams of beta-glucan per meal significantly reduces glycemic responses without disproportionately raising insulin. This is something that was confirmed by a study in 2021where it was seen that doses of four grams or more of beta-glucans for every 30 grams of available carbohydrates are the key to avoiding the dreaded nocturnal glucose peaks. The impact. To all this, and although there are no studies designed exclusively to measure the impact of oats at dinner, we know that their glycemic index is low, which ensures fairly smooth digestion. This is in addition to the fact that it contains tryptophan, an essential amino acid that our body uses to produce melatonin and serotonin, the hormones responsible for regulating and improving the sleep cycle. His presence at dinner. Keep in mind that not all oats are the same. The first thing to keep in mind is that you should avoid ultra-processed foods, avoiding instant oatmeal versions that are loaded with added sugars or artificial flavorings. Furthermore, since at night we look for a complete meal, the best way to prepare it is by combining it with a good source of protein. Images | micheile henderson In Xataka | We have been believing for years that intermittent fasting is the definitive weapon to lose weight. Science has another idea

Magnesium has become the star supplement for constipation. Science is clear about how it works

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Constipation is undoubtedly one of those silent problems that many people carry inside with a lot of suffering due to the symptoms it generates, such as abdominal distention. And in search of different remedies to be able to go to the bathroom regularly, magnesium It has positioned itself as one of the star supplements, whether in the form of pills, powders or even mineral waters. And here the question is clear: does it really work? The engine of the intestine. We know that magnesium acts in our digestive system fundamentally as an osmotic laxative. This means that, by not being completely absorbed in the intestine, it attracts water from the walls into the intestinal lumen. And in the end, this extra hydration softens the stool and increases its volume, which in turn stimulates colon movements that facilitate evacuation. Something very similar to what happens when you consume fiber. The use of magnesium. The most compelling evidence about its proper functioning comes from Japan, where magnesium oxide is a historically used first-line treatment for this problem. Here the science wanted to put it to the test in a group of adult patients with functional chronic constipation, and the results showed that magnesium oxide not only significantly improved stool frequency, but also stool shape and colonic transit time. The most revealing data is the overall response rate, since 70.6% of those treated with magnesium oxide saw their periods of constipation reduced compared to 25% of the control group. But beyond this, patients reported an improvement in their quality of life, demonstrating that magnesium goes beyond simple punctual symptomatic relief. Natural prevention. It is not always necessary to resort to supplementation in pills, since intake through food also plays a fundamental preventive role. Analysis of the NHANES database in American adults reveals a clear correlation: increased consumption in the diet Magnesium is associated with a lower prevalence of being constipated, which is an effect that is very marked in men. This is also adds the power of mineralized waters rich in magnesium and sulfate that have been seen to have a real therapeutic impact. The data suggests that a dose of 20 mmol per day is sufficient to increase the number of bowel movements and improve the consistency of the stool from the second week of consumption, making these waters a very important dietary tool that should always be present in cases of constipation. The pediatric dilemma. In the case of children, everything changes, and it forces us to be very careful because what may be good for an adult does not have to be transferred to the little ones. And, although science suggests that at a physiological level, frequency and consistency are improved and abdominal pain is reduced, it has an important problem: taste. Here studies suggest that a good part of children can reject magnesium oxide orally. Likewise, in the pediatric field it is always better to avoid supplementation and consult a specialist in order to receive the best possible treatment and under strict control by doctors. Your fine print. Magnesium is a priori natural, but this is not synonymous with ‘harmless’. The B side of magnesium supplementation lies in the possibility of having an excess of magnesium in the blood in cases where it is thought that the more, the better. An excess of magnesium in the blood due to self-medication can directly affect the kidneys, which are ultimately responsible for filtering and excreting this excess, so those people who already have an underlying kidney problem should be very careful about overdoing it with this ‘natural’ remedy. In Xataka | There are people obsessed with consuming magnesium as a supplement when the best way is to put it in your diet

We thought matcha tea was just an internet fad. Science has seen that it “hacks” our brain against allergies

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He matcha tea is beginning to be a standardized drink among many people who need get up with one in your handslike those of us who need coffee to wake up. Something that has also been accompanied by the opening of a large number of establishments specialized in its production. And although for many people it may seem like a joke or an expensive fad promoted by internet gurus and people closest to Eastern countries, the truth is that it has a large number of benefits that do not stop growing. Its component. Matcha tea hides a biochemical profile that far exceeds that of conventional green teaand the key lies in how it is grown and consumed. Precisely by ingesting the whole powdered leaf, we get a very high concentration of EGCG (epigallocatechin gelato), L-theanine and caffeine. Its benefits. One of the most important is that we are facing a great antioxidantand in this way studies suggest that matcha drastically reduces oxidative stress and key inflammatory markers such as IL-6. In fact, in some trials, its ability to restore cellular homeostasis exceeds that of vitamin C. Additionally, the synergy between caffeine and L-theanine is the real productivity “trick.” Daily consumption has been shown to moderate fatigue and improve spatial learning and, in addition, upregulates the brain-derived neurotrophic factorwhich enhances memory without altering the sleep cycle. Metabolic impact. In high-fat diet models, matcha suppresses weight gain and fat accumulation in the liver. In humans, trials show better glycemic control and an improvement in the lipid profile, lowering ‘bad’ cholesterol (bad in many quotes) and raising good cholesterol. Its role in allergies. As if all this were not enough, a recent study published at the beginning of this month of March has put an unexpected finding on the table: matcha can be an ally against allergic rhinitis. Something that is welcomed with open arms right this spring where a very tough allergic season is expected. In this case, the team led by Osamu Kaminuma, from Hiroshima University, administered oral doses of matcha of 250 mg/kg to sensitized mice. The result was a significant suppression of allergen- and histamine-induced sneezing. Its mechanism. Here matcha did not alter the traditional immune system, which is the one that detects an allergen as an ‘enemy’ and wants to eliminate it at all costs. What it did was suppress neuronal activity in the brain stem, directly blocking the sneeze reflex on a neurological level. Although confirmatory trials in humans are still lacking, and it opens the door to fascinating non-pharmacological clinical use. There are several types. Not all matchas are the same, and you should always opt for the ceremonial quality grade, since it is first harvest, stone ground, bright green in color and with a large amount of antioxidants. In addition, authentic Japanese origin guarantees quality, and you should also avoid those that have been industrially processed. Images | Jason Leung In Xataka | The tea that was born to stop time now runs against it: the matcha crisis in Japan

It’s science and that’s why they sleep worse than men

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When sharing a bed with another person, there is a chance that there will be an eternal nighttime thermal war, with one person roasting in the heat and pulling the duvet down, while the other freezes and seeks refuge under the covers. For years, this has been treated as a simple couple anecdotebut the truth is that it has a physiological reason behind it. And something that has been seen is that women, statistically, sleep worse than men, with the thermostat being the culprit. Sleeping differently. To understand this phenomenon, we must first know how our body works when it prepares to rest. In this case, in order for us to fall asleep and enter the deeper phases, our core temperature must drop. However, during the REM phasethe body needs this temperature to rise slightly again. This is where the biological conflict comes in, as is exposed in the podcast Sleep is a Skillwhere a specialist explains how women generally tend to have less muscle mass and a lower basal metabolism than men. This translates into a skin temperature between 3 and 4 degrees colder, meaning that, with colder extremities, women prefer warmer environments to be able to reach that optimal temperature that induces sleep. Something that opens up many anecdotes, like how in a couple women need a sheet to sleep in in the summer. Their differences. In general terms (which is not universal), while men need the room and bed to be cold at the beginning of the night to lower their core temperature quickly, Women require a warmer environment to compensate for colder skin. and not suffer alterations in your sleep architecture. What science says. In the literature, there are multiple studies that confirm these gender differences in thermoregulation. One of these was published in 2023, where it was shown that women recorded higher skin temperatures than men during the sleep phase where there is higher quality. That is, it requires a warmer microenvironment to have a much more adequate sleep. Furthermore, several studies published in Journal of Sleep Research reveal that women reach nocturnal body temperature minimums earlier than men. But also, its temperature drops are less pronounced, which directly affects the quality of continuous sleep. The use of technology. Given this problem, there are companies that have set to work to do something that would a priori solve this problem for couples: use smart mattress covers to regulate the temperature on each side of the bed so that women sleep better. It is true that the data they rely on internally to sell their mattresses still has to be validated. Even so, the pre-existing scientific evidence is robust. Women are not “chilly” on a whim, but their biology requires a different thermal environment to be able to rest properly. Perhaps the definitive solution to disputes over the duvet is not by giving in, but by dividing air conditioning technology in the bed. Images | Vitaly Gariev In Xataka | We thought insomnia was just not being able to sleep. Now we know that there are five different disorders

Science is clear that being a good person gives happiness. The problem is the hidden cost of “overdoing it”

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Since we were little, society has bombarded us with a very clear message: you have to be good people. It’s a moral imperative, yes, but over the past few decades science has attempted to answer a much more pragmatic question: does being kind to others have a real impact on our happiness? This is where A group of researchers wanted to give an answer. What we know. The answer to this question is ‘yes’ according to the latest articles that have been published on the matter. But we must keep in mind that taking kindness to the extreme, leaving our ‘skin’ for others without attending to our own needs, has a real impact that translates into burnout and also in a great emotional exhaustion. And surely, some people can see themselves very reflected in these concepts of literally being very ‘burned out’ for being very kind to others and attending to all the favors they ask of you without thinking about oneself. The positive part. The idea that “good people are happier” is not a simple phrase of Mr. Wonderfulbut it is a conclusion with solid empirical support, especially in the field of positive psychology. Here the researchers were able to see, for example, in a Japanese sample that happier people performed more daily acts of kindness. What’s more, they found that forcing people to simply “count” their own kind acts for a week measurably increased their happiness. There are more studies. Beyond this case, which is very classic, the bibliography leaves us with a great meta-analysis that reviewed decades of research to conclude that help, donate or support others is consistently associated with persistently higher well-being, even if modest in some cases. Something that was also demonstrated in the experimental works of Sonja Lyubomirskywhich made it clear that assigning a group of people the task of “performing acts of kindness” significantly increases their well-being compared to control groups. The negative part. If being good is so positive… Should we give ourselves to others without limit? The answer here is a resounding ‘no’. As has always been heard, the middle ground is where virtue lies, since reaching absolute altruism causes compassion fatigue and burnout. And it is no wonder, because altruism taken to the extreme, especially in highly demanding contexts, is dangerous. The studies on health professionals and caregivers clearly show that high exposure to the suffering of others, combined with a strong compassionate orientation but without clear limits, triggers the risk of psychological collapse and, therefore, serious problems such as anxiety. Its consequences. An empirical study on altruism that exists among co-workers revealed that, although constantly helping colleagues encourages cooperation, in the long term it is associated with great emotional exhaustion and depersonalization of the relationship. That is, the system collapses if aid becomes chronic and absorbs own resources. And the problem is that when people are very compassionate with the rest of the world, they are usually incapable of being very compassionate with themselves and have much greater wear and tear. Here empathy needs a protective shield that is nothing more nor less than a series of limits regarding interpersonal relationships. Although logically there are cases that are difficult to mark because we tend to be too kind. The society. To fully understand the picture of human goodness, one must do zoom out since it is not about what we do individually, but about the ecosystem where we are living. Here the World Happiness Report 2025 dedicate an entire chapter to analyze on a global level how kindness and happiness interact. And their conclusions are revealing, since they point out that the greatest predictor of individual happiness is not the frequency with which we do good acts, but the expectation that others will do good things too. In this case, the report gives a very illustrative example: the expectation that, if you lose your wallet, a stranger will return it to you. Here, believing in the goodness of others has a brutal impact on reducing inequality of happiness within a country, and as the SDSN network points out In their adaptation of the data for Spain, “believing in the goodness of others is much more related to happiness than previously thought.” Images | Brooke Cagle In Xataka | If the question is “where is the secret to happiness,” an expert believes it is hidden in these 15 statements

science details that it completely changes how we digest it

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White bread is one of the star foods of our gastronomy, since many people almost need it to have some lentils or in the morning. to make some toast. The ‘problem’ is that for many people it is a prohibited food due to its high glycemic index, which causes a very pronounced sugar spike after taking it. Although There are options to have less impact. Your metabolism. Our body, due to the refined flours used, causes its carbohydrates to be digested quickly, causing a blood glucose spike. However, for some time now a ‘biohack’ has been circulating on the internet that promises to change this with a simple gesture: put the bread in the freezer and toast it before eating it. Something that can be ideal especially for diabetics. Here the question is almost obligatory: is it an urban legend? What happens to the bread? To understand why bread changes its properties when cooled or heated, we must look at its main component, which it’s starch. In these cases, when the bread is baked, the starch gelatinizes, becoming easily digestible for our enzymes, and this causes the sugar to quickly pass into the blood. However, when we subject that bread to an extreme cooling process, such as freezing, and subsequently toast it, the molecular structure of the starch changes. What occurs here is a physical-chemical phenomenon known as retrogradation, which has as its final result the formation of type 3 resistant starch. A new starch. Type 3 resistant starch lives up to its name, as it resists digestion in the small intestine. The result is that, instead of being broken down into glucose quickly, it passes intact to the large intestine, where it acts in a similar way to dietary fiber, serving as food for our intestinal microbiota. What does science say? This mechanism is something that already It was tested in 2008 with the publication of an article that measured the glycemic response in healthy volunteers after consuming white bread subjected to different processes: Fresh white bread: 259 mmol min/l. Just toasted white bread: 193 mmol min/l. White bread frozen and then toasted: 157 mmol min/l. The important thing here is that frozen and then toasted white bread shows a significant drop in the glycemic index. That is, the simple act of freezing the bread and putting it through the toaster reduced the glucose spike by almost 40%. There is more evidence. In addition to this, there are other published studies that showed that frozen and reheated white bread generates a much lower glycemic response at all times measured after ingestion. In fact, already in 1988, another study showed that roasting reduces the degree of digestion, and subsequent work confirms that leave it frozen for a long time The amount of resistant starch progressively increases. It’s not magic. Although science suggests that toasted and frozen bread is metabolically better at keeping glycemic spikes at bay, there is fine print to keep in mind. One of these important points is that, in healthy people, reducing the glycemic index is interesting on a physiological level, but its impact on general health or weight loss is minimal if it is not accompanied by a healthier diet. Additionally, toasting bread increases its palatability. That is, it is richer, crunchier and not as filling as fresh bread, which can lead us to eat more, canceling out any benefits of resistant starch. The alternatives. If you want to continue eating bread but with a lower impact on your health, one of the options is to opt for whole grain bread that is 100% whole grain or made with long-fermented sourdough, since they have an inherently lower glycemic index thanks to their high fiber content. But we must also remember that the glycemic load of a meal does not depend on a single food. Combining bread with good sources of protein, healthy fats, such as extra virgin olive oil, and fiber flattens the glucose curve much more forcefully than the best toasted bread. In Xataka | Bread has always been a pillar of the Spanish diet. Now it is suffering a historic crisis and no one knows why

In 1888 an English doctor dissected a corpse down to its nerves. And illuminated forensic science along the way

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If you stop by the bookstore of the Faculty of Medicine of the Drexel Universityin Philadelphia, you’re most likely in for a scare. Fright that will be followed by an uncomfortable gesture. Discomfort from which you will jump to surprise. And surprise that will give way to absolute fascination. There, locked in a glass display case located in the Student Activities Center of the faculty, received visitors until at least a couple of years ago, a dissected human body, tall, well bleached and with bulbous eyes with an expression of superlative and perennial surprise. The most curious thing is that the corpse does not preserve the skin. Not even the muscles. Not even the veins. Not even cartilage. Not even the bones. The corpse, baptized “Harriet”, is pure nerve. And it is in the most literal and full sense of the word. “Harriet” is the result of the surgical virguería of the late 19th century, the result of meticulous and pioneering work – it had so much of both that there were those who believed it impossible – prepared more than 130 years ago by the Dr. Rufus B. Weavera former professor of Hahnemann Medical Collegenow known as Drexel College. Maybe in the era of 3D printing Harriet’s vision is less moving than in 1900, when medical students observed her; but the effect revives when you know two things. One, that Harriet are the remains of a real person, a former employee of the center who died at the age of 35; two, that to give it shape Weaver had to arm himself with patience and separate, filament by filament, the entire nervous system. The process took five to six months. and it only failed in the intercostal area. This is your story. With the eye of an anatomist and the pulse of a seamstress By the late 1880s Dr. Weaver was a well-established and respected professional. He was almost 50, had made a name for himself by identifying and removing bodies from fallen soldiers at Gettysburg and had been working for some time as a professor of Anatomy at the Hahnemann Medical College. In mind, however, Weaver had a project that would allow him to gain fame in the United States and abroad: completing a total dissection of the cerebrospinal system. During his travels through Europe he had seen partial works, but none that showed a complete “x-ray”. Help for his task came, it is believed, from where he least expected: from Harriet Cole, a young African American who was dedicated to cleaning the anatomy laboratory. Although he was only 35 years old, Cole’s health was very delicate. He suffered tuberculosis and his forces were greatly undermined. Before he died in 1888, however, he decided to donate his body to science and offer Dr. Weaver the opportunity he was looking for for his ambitious nervous system project. Over the next six months, Professor Weaver, armed with patience, eyesight and a seamstress’s hand, set about extracting the entire cerebrospinal nervous system. It takes a look at the result to understand that the work was anything but simple. Only the base of the skull required two weeks of dedicationalmost half a month during which he cut the bones piece by piece to keep the dura mater intact and that the eyes remained attached to the optic nerves. With the help of a very fine needle he separated the cranial nerves, the spinal cord and its nerves. Then he used bandages, gauze and pads soaked in alcohol and applied white lead-based paint and shellac to preserve them. Extracting and preserving the intricate system of filaments that shaped Harriet Cole’s system was only part of the challenge. To shape the composition that still today, 13 decades later, continues to amaze Drexel medical students, he had to suspend the mass of fibers from a special board with thousands of pins. The result, named “Harriet” in a nod to the donor, was used by Weaver for his anatomy classes at Hahnemann Medical College; but his virguería soon transcended the walls of the laboratory and even the limits of Philadelphia. In 1839, about three years after the professor’s death, the board was presented and achieved distinction in the famous Word’s Columbian Exhibition. Since then, Harriet’s image has been reproduced in books, articles… Even today, more than 130 years later, the Legacy Center in Drexel University welcomes applications of teachers who want to use their images for their classes at universities or secondary schools. Who was Harriet? As time has passed, the focus has also been placed on Cole herself. Years ago precisely the Legacy Center decided to go beyond inherited history since the end of the 19th century and delve into the figure of the former Hahnemann cleaner. Specifically, he asked himself some questions: Did Harriet really exist? And if it was so, who was it? Why did he donate his body? Under what circumstances did you decide it? Did she know what Professor Weaver would use her corpse for? During their investigation they found many clues and circumstantial evidence, but no conclusive data. The Legacy Center located an 1870 census entry referring to an African-American woman named Harriet Cole who worked as a domestic servant and lived in Philadelphia, right in the same district where Hahnemann College was located; also a death certificate with his name signed in March 1888 and which attributes the cause of death to tuberculosis. What’s more, the center dedicated to medical study is designated as the “place of burial.” Does that mean that Harriet is the same person that, stripped of muscles, veins, bones and cartilage, we continue to see pinned at Drexel University? The institution recognizes that it is very difficult to know. The gaps in the center’s records between 1869 and 1900 make it difficult to go further. In any case, slip that it is not crazy think that Harriet Cole was a poor woman who, faced with the prospect of imminent death, decided to bequeath her … Read more

Cats always land on their feet. And science has been trying to understand an inexplicable phenomenon for centuries.

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Cats are fascinating animals, also for science that, for centuries, has tried to answer the question: How do they always manage to land on their feet? Although studies have been done trying to solve itit is not known with certainty how they achieve it. A recent experiment by Japanese researchers has shed some light on this feline mystery. In a recent study published in The Anatomical Recordthe researchers took a different approach than had been followed until now. The experiment consisted of two parts, on the one hand to thoroughly analyze the flexibility of the cat’s spine and on the other to observe several cats performing this correction in the air. For the first part, they performed mechanical tests on the spinal columns of five cat corpses. In this way they measured the maximum resistance and range of motion of the spine before breaking. What they discovered was that the cats’ spine is very flexible in the upper area, where the thoracic vertebrae are, turning 360 degrees. The lumbar part is more rigid and robust. For the second part, they recorded two live cats being released at a distance of 90cm from the ground. The recordings were analyzed frame by frame and compared with the data obtained from their observations. The difference in spinal flexibility fits with what was observed in the videos: the cat turns its front paws first (your most flexible area), so first look at the ground and then adjust the rest of your body (the least flexible area). The experiment also observed an interesting detail and that is that in most tests the cats turned to the right. Specifically, the first cat turned this way every time, while the second turned to the right six of the eight times it was dropped. In case anyone is worried, the bodies were donated and to record the falls they put a cushion underneath so they wouldn’t get hurt. The falling cat problem It is a problem that arose in 1894, when French scientist Étienne-Jules Marey showed in a video that cats were able to right themselves in the air without external help. Since then there have been different hypotheses that have tried to explain the exact mechanics of this stunt. Falling cat, by Étienne-Jules Marey, 1984. Source: Wikipedia There are two main models to explain this spin in the air. The first is “tuck and turn” which proposes that cats rotate the upper and lower halves of their body executing movements at the same time and in opposite directions. The second is “legs in, legs out.” This model states that cats adjust their fall trajectory by first stretching their hind legs and then collecting them again, making a successive turn with the front and then with the back part of the trunk, so that They adopt the correct position while still in free fall. Another less supported hypothesis is the “tail-propeller” hypothesis, according to which the animal can reverse the direction of rotation of its body by moving its tail in the opposite direction, as if it worked as a propeller. However, tailless cats can also do this movement, so although it may help, it is not essential. The new study supports the “legs in, legs out” model hypothesis, but the researchers caution that the problem still cannot be considered solved and more research will be needed. The plan is to build mathematical and three-dimensional models with more data. In statements to New York TimesGreg Gbur, physicist who is an expert in falling cats (oh really), states that science has tried to simplify into “a single correct way that cats land on their feet, but nature is not concerned with simplicity.” In Xataka | Walking cats on a leash is fashionable. We have asked an expert in feline behavior and she is clear about what she thinks. Main image | Gemini, own edition

If Ukraine promoted the use of drones, Iran has triggered the Terminator algorithm. And that was already a problem in science fiction

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In the gulf war 1991, the international coalition took more than a month to launch some 100,000 airstrikes after weeks of planning. Three decades later, the ability to process military information has changed radically: satellites, sensors and drones generate amounts of data that no human team could analyze alone. In this new technological environment, the true battlefield is no longer just the air or the land, but the speed at which information is interpreted. From the drone to the algorithm. Recent wars had already anticipated a profound transformation of modern combat, but the conflict with Iran seems to have crossed a different technological frontier. If the war in ukraine popularized the massive use of drones as a dominant tool from the battlefield, the campaign against Iran has introduced a logical even more radical: integration artificial intelligence at the very heart of military decisions. In fact, the initial attacks showed an intensity difficult to imagine just a few years ago, with hundreds of targets hit in a matter of hours and thousands in a few days. That speed was not only the result of greater firepower, but also of the use of capable systems of analyzing enormous volumes of data and transforming that information into almost instantaneous attack plans. Understanding the “kill chain”. I remembered this morning the financial times that traditional war, the so-called chain of destruction (from identifying a target to launching the attack) was a long and bureaucratic process. Intelligence officers analyzed information, wrote reports, commanders evaluated options and finally the coup was authorized. A process that could take hours or even days. The incorporation of AI is reducing that cycle drastically. We are talking about platforms that integrate data from satellites, drones, sensors and intercepted communications that are capable of generating lists of targets, prioritizing them and suggesting the appropriate weapon in a matter of seconds. The result is extreme and disturbing compression of the kill chain: What once required prolonged deliberation now becomes an almost instantaneous sequence. The digital brain of the battlefield. Behind this acceleration are data analysis systems that act as a true operational “brain.” These platforms combine geospatial intelligence, machine learning and advanced language models to interpret information and propose military actions. Its most disruptive capacity is that it no longer only summarizes data, but can reason step by stepevaluate alternatives and generate tactical recommendations. This allows military commanders to process volumes of information that are impossible to handle manually and multiply the number of operational decisions made in the same period of time. In practice, algorithms are allowing select and execute objectives at a scale and speed that were previously unthinkable. Bomb faster than thought. The result of this transformation is a war that begins to move at a rapid speed. higher than human pace. Artificial intelligence can now analyze information, detect patterns and propose attacks faster than a team of analysts could even formulate the right questions. Some experts describe This phenomenon as a form of “compressed decision,” in which planning is reduced to such short windows of time that human managers can barely review what the machine has already processed. In this context, another disturbing idea: that destruction can precede the human reflection process itself, that is, first comes the recommendation generated by the algorithm and then the formal approval of the person who must execute it. And there, there is no doubt, we can have a problem of colossal dimensions. The human dilemma in algorithmic warfare. Because this technological acceleration is generating a growing debate about the real role of humans in military decision-making. Although the armed forces they insist As final control remains in the hands of people, the time available to evaluate system recommendations is increasingly reduced. Some analysts fear that this will lead to a form of “cognitive download”one in which military leaders end up automatically trusting the decisions generated by algorithms. Other countries like China itself observe this evolution with concern and warn of the risk that automated systems end up directly influencing life or death decisions on the battlefield, associating the scenario with the closest thing to the “Terminator algorithm” due to the unequivocal way in which all paths approach James Cameron’s fantastic proposal. A new accelerated war. If you will also, what is emerging is not just a new military technology, but rather a new time of the war. AI makes it possible to process information on a massive scale, identify targets more quickly, and execute attacks with unprecedented simultaneity. This means that military campaigns can develop at a pace that overflows the models traditional planning. From this perspective, war no longer advances solely at the pace of logistics or firepower, but at the pace of algorithms capable of interpreting the battlefield in real time. And in this unprecedented scenario, strategic advantage could increasingly depend on who is able to think (or calculate) faster than the adversary. Although neither of them be human. Image | Ministry of Defense of Ukraine In Xataka | China has just found a hole in the US’s quietest weapon: an algorithm has hacked its B-2s in Iran In Xataka | The great paradox of war: the US ignored Ukraine’s pleas to Russia and now needs it in Iran

Chips connected by laser instead of cable. It seems like science fiction, but it aims to revolutionize data centers

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If you have ever mounted a PCSurely one of the points on which you have had to pay the most attention is the connections. Because understanding the power of the processor, the GPU or the speed of the RAM is “easy”, but the motherboard is what allows us to interconnect all these components with ‘highways’ in which the data speed can be maximum. In the data centers and serversthis is the same: the better the connections between chips and equipment, the lower latency, higher bandwidth and better performance. These connections are made physically, but there is a French startup that wants to change the rules of the game with NVIDIA. As? Connecting the chips by laser. Chips connected by laser and NVIDIA taking out the wallet Improving interconnection speed is no small feat or a whim. NVIDIA has begun manufacturing its next generation platform, the one named Vera Rubin. It is a system that can be combined with others to multiply benefits. That union, as we say, is physical, but there comes a point at which physics is no longer enough. When that arrives, NVIDIA wants to be ready and, a few days ago, Reuters reported on a $4 billion investment by NVIDIA in two companies that are aggressively researching new technologies to help increase that interconnection speed: Lumentum and Coherent. This is a rack and the nightmare of those of us who hate cables. Specifically, that of the Wikimedia Foundation. Well, imagine that a large part of those cables go outside because the systems are connected by electricity Another of the companies in which they have invested is Scintil Photonics. It is a French startup that this in the testing phase of a technology that, if the industry adopts it, will mark a before and after in this connection on a team scale. The LEAF Light Evaluation Kit is, as detailed, the first dense wavelength division multiplexing single chip to go from theory to practice. It’s like another language, I know, but it’s basically what we were talking about: an optical chip interconnection system instead of copper. And that is the main advantage. With copper reaching physical limits of speed and density, optics are emerging as a solution when connecting clusters of thousands of processors. Each chip has an optical system that is responsible for emitting and receiving light, and in that light goes the data that is currently traveling through cables. The one from the French company it is not the first chip based on photonic communication, but they claim that their technology reduces the energy necessary for them to work by 50%, as well as latency. Results? Well we’ll see. The startup’s CEO, Matt Crowley, has commented that he has “six or seven companies interested in implementing the technology by 2028,” but that due to confidentiality agreements, he cannot name names. The Scintil Photonics prototype The complication in this will be that they get supply of the photonics systems, since the data center racks are built with the idea that they are scalables. That is, it is no longer just power, but how many tens of thousands of units you can interconnect, and a bottleneck in the manufacturing of any of the parties involved in optics would be equivalent to a lack of supply for their customers. At the moment, some prototypes have already been served to select companies for testing, but certainly, using light pulses instead of electrical signals is something that is very interesting in superclusters focused on huge data centers that can scale without the limitations of the physical connection. Images | Victorgrigas, M.I.T., GlobeNewswire In Xataka | Huawei no longer competes: it is building its own parallel reality

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