believes

Science now believes that our biological expiration date is more hereditary than we thought.

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For years, the scientific consensus and popular culture have repeated a reassuring mantra: genes they only determine 20 or 25% of life expectancy. The rest of this fell on our shoulders directly with the lifestyle, diet or even the environment we surround ourselves with. But this figure, which corresponded to old studieshas changed radically. The study. A study published this week in Science has come to shake the foundations of biogerontology. Led by molecular biologist Uri Alon of the Weizmann Institute in Israel, the research suggests that We have been massively underestimating the role of DNA. Something that they have been able to know after cleaning the data from the statistical “noise” with a very resounding conclusion behind it: the heritability of human life expectancy is around 55%. What we knew. The percentage of participation of current genetics was based on research carried out in the 90s and whose key was the definition of “dying.” The oldest studies analyzed cohorts of Danish-Swedish twins taking mortality as a whole. In this way, if one twin died of cancer at 90 and the other from a car accident at 30, the statistics interpreted that genetics had very little influence. The present. But now, Alon’s team has applied a new mathematical model to separate two concepts that used to be mixed up. One of these was extrinsic mortality, that is, deaths caused by external and random factors such as accidents, pandemics or wars. On the other hand, we have intrinsic mortality, which is true biological aging and is not due to an accident, but to the ‘wear and tear’ of the organism over time. In this way, by removing the noise of extrinsic mortality from historical data, the weight of genetics begins to skyrocket. The results. The new study, published at the end of January, is not just based on a simulation but has analyzed decades of records. On the one hand, data from twins born between 1870 and 1900 have been reanalyzed, which are the original studies where the extrinsic factor was included. By removing it, the genetic correlation again became much stronger. The team crossed their models with sibling data for 444 American centenarians confirming that extreme longevity clusters in families much more than chance or shared environment could explain. In this way, the study corrects what experts call prior estimation biases. That is, the 20-25% figures were not wrong. per sebut they included too much “bad luck.” Lifestyle matters. That the weight of genetics is much greater than we think, does not mean that we should abandon the gym and a balanced diet. And although genetics determine 55% of aging, the other almost half continues to depend on the environment and lifestyle. And this must continue to be maintained. On the other hand, this has enormous implications for personalized medicine. If the “expiration date” of our tissues is more programmed than we thought, anti-aging therapies will have to focus much more on editing or modulating that genetic load, and not just on telling us to eat more vegetables (which too). Images | LOGAN WEAVER | @LGNWVR In Xataka | In Spain there are already 148 people over 64 years of age for every 100 young people. And that is a ticking time bomb for the economy.

In 2024 we feared that the asteroid YR4 would impact the Earth. Now NASA believes the Moon is threatened

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For a few weeks at the beginning of 2025, the name 2024 YR4 became an absolute protagonist among the main institutions around the planet. It was no wonder, since this object, with an estimated size between 40 and 60 metersreached the level 3 on the Torino scalea milestone that we have not seen for a long time and that implies a probability of collision greater than 1% with the capacity to produce devastating local damage. We are saved. After this fear, science has managed to reach the conclusion that the Earth is safe now. However, the story of 2024 YR4 is not over, since the latest models suggest that, although it will avoid us, there is a non-negligible probability that it will end up crashing into the Moon. How we knew. Initially, NASA’s Center for Near-Earth Object Studies (CNEOS) held his breath in early 2025. The first observations showed a worrying scenario for the year 2032 with this possible impact, but the moment more attention began to be paid to this object it was seen that it was not going to end up on Earth. The key to being able to breathe a little calmer again lies in the ‘shoulders’ of the James Webb which began making observations in May 2025. The space telescope made it possible to refine the asteroid’s orbit with a 20% precision improvement, confirming that there is no risk of impact against our planetnor an orbital alteration of the Moon that could affect us secondarily. But by closing a door, the JWST opened a fascinating and destructive window: the probability that 2024 YR4 will impact the Moon has risen from 3.8% to 4.3%. The lunar judgment. According to studies recently published on arXiv, the key date is December 22, 2032. That day is where there is about a 1 in 23 chance that we will see a violent spectacle on the lunar surface with an impact that would release an energy of 6.5 megatons of TNT. This is something very relevant, since this great energy would generate a crater approximately one kilometer in diameter and the ejection of 100 million kilos of lunar debris with a cloud of material equivalent to the weight of about 20,000 elephants. From Earth. Logically, this impact, although it does not occur on the planet, the truth is that it will have important consequences and not exactly physical ones, but rather a visual phenomenon. The debris that will be ejected from the Moon could enter the Earth’s atmosphere some time later, generating an unprecedented meteor shower caused by a secondary impact. The use of technology. Over time, the European Space Agency has also validated this data, placing the size of the object more specifically between 53 and 67 meters and confirming the 4% probability of having an impact on the moon. Although logically we also have a 96% chance that it will completely pass from the Moon. But this asteroid has had a very positive point: it has vindicated the need to improve space detection tools. And right now these objects are hiding in the “blind spot” of the sun’s glare, although with this one we were lucky that the ATLAS system in Chile managed to detect it. A future mission. Given this limitation that we have, the ESA has seen it necessary to activate the NEOMIR missionsince if it had already been active, it would have detected the asteroid a month earlier, offering vital reaction time if the threat had been against the Earth and not against the Moon. And now what. For now, we have to wait. The asteroid has moved away in this case and will not be in an optimal position to make an observation again until 2028. It will be then that astronomers will be able to refine this 4.3% probability and tell us definitively whether we will spend Christmas 2032 looking at the Moon to see how a new crater forms live. Images | Mike Petrucci NASA Hubble Space Telescope In Xataka | Japan has lost a five-ton satellite in the most unusual way imaginable: “it fell” during launch

We have been relying on the Nutri-Score in stores for years. Science believes that its real impact is zero

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He Nutriscore what we can see in some foods born with an ambitious promise: simplify the nutritional complexity of products into a code of easy to understand colors to know if a food is healthy or not. However, what on paper seemed like the definitive solution against obesity and poor diet is facing a much grayer scientific reality. His dark side. Although the idea seemed quite good, the reality is that new scientific reviews are setting off alarm bells. The conclusion being drawn is quite clear: the real impact on the shopping basket is minimal and the algorithm categorizes foods that are essential as something very bad. A good gap. One of the strongest arguments in favor of Nutri-Score comes from studies conducted in controlled environments, i.e. a laboratory. But what happens when we go down to the real, everyday world? This is what they wanted to analyze in a recent narrative reviewwhich evaluates consumer behavior in physical supermarkets and throws cold water on the system. And with this food color coding, the data shows that the improvement in the nutritional score of the purchase is only 2.5%. That is to say, it has hardly been noticed that a person begins to eat much more appropriate foods with this color code. Something that quite disagrees with the laboratory results that predicted that the effect was going to be much better. The real victim. The fact that some people’s shopping baskets have improved a little is the motivation that some producers of these foods have to change their ingredients to achieve a better Nutri-Score. as seen on Eroski. But this does not mean that citizens have changed the way they shop. The great blind spot. The fiercest criticism from the scientific field, highlighted by organizations such as the Puleva Nutrition Instituteis the omission of micronutrients. The current algorithm focuses almost exclusively on macronutrients, which are fat, sugars and proteins, but forgets other points that are fundamental. One of these points are vitamins and minerals, which are logically essential for the body, especially because some of them must be taken as they are not produced by the body. But polyphenols or bioactive compounds also stand out, which are essential antioxidants that can prevent chronic diseases. Unfair penalty. The system that is implemented right now also penalizes foods for their total fat content without differentiating whether they are healthy, something that has led to putting a bad score for olive oil. A paradoxical situation. The study from the University of Granada wanted to see the same thing about soluble cocoa to highlight these large discrepancies that force us to question Nutri-score. The result of the research team indicates that while pure cocoas with a higher bioactive profile can receive low grades such as C or D. But, on the other hand, others ultra-processed products with additives They achieve better scores, even A, simply by adjusting their sugar or fiber levels, without necessarily being healthier. Trying to correct it. The scientific community is no stranger to this problem and logically when something goes wrong you want to fix it to make it fit reality and that it truly fulfills the objective with which it was created. In fact, recent updates have already tried to correct the algorithm to better treat vegetable oils and nuts and penalize ultra-processed foods more strongly. However, the validations insist that, although there is an association between scores and macronutrientsthere remain huge gaps with comprehensive dietary guidelines. And we must keep in mind that the Nutri-Score measures “isolated nutrients” but not the overall quality of the food. ¿Where are we going? Science seems to indicate that the Nutri-Score is a useful but overly simplistic tool. By trying to condense health into a letter, nuances are lost that really make a difference in longevity and disease prevention. Although the algorithm is being refined to better align with European recommendations, the risk of the consumer blindly trusting an “A” for a processed product versus a “C” for a natural food remains present. Images | Franki Chamaki In Xataka | Ozempic’s “great rebound”, in figures: science reveals that the weight returns four times faster than with a diet

Barcelona believes it has a night security problem. So you’re going to leave the Christmas lights on all year long

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Vigo risks losing his position as “city of lights” (from Spain). Although the Galician City Council usually displays its Christmas decorations already in July and boasts every year of the millions and millions of LEDs that adorn its streets for almost two months, from November to January, there is another city that is about to raise the stakes: Barcelona. There the Consistory has decided maintain part of the lighting for the festivities Old City during the remainder of winter. Their reasons actually have little to do with Christmas. Lights, lights and more lights. Christmas may be over, but in Spain it is becoming common for us to talk about its lights for months and months. In Vigo they do it because the City Council begins to hang them in the middle of Julywith the thermometer flirting with 30º and the city full of tourists in shorts and flip-flops. Now they will do it too in Barcelonaalthough for other reasons. What do they want to do there? The news I advanced it on Monday The Vanguard: Barcelona is finalizing a plan to improve the lighting of some of the narrowest (and darkest) streets of Ciutat Vella, taking advantage of part of the decoration that was installed there this Christmas. That is to say, in the absence of traditional streetlights, garlands strung between facades are good. Although Jaume Collboni’s team has not yet revealed the details of the initiative, the idea does seem clear: it is not so much about neighbors, merchants and tourists continuing to walk for months under decorations of Santa Clauses, Three Wise Men and Christmas trees, but rather about maintaining the most ‘timeless’ designs. Walking under light bulbs. The key is therefore to take advantage of decoration that does not clash with the rest of the winter. To reinforce it, the municipal government also proposes maintaining the garlands that the merchants themselves have placed. In the Gòtic there are businesses that have been hanging decorative lights on their own, although as these were private initiatives they encountered challenges such as the passage of garbage trucks or some parades. Where, when and how. While waiting for the City Council to provide more details about where, when and how the initiative will be deployed, The Vanguard has advanced some keys: the measure will focus on points in Ciutat Vella, Gótic and Sant Pere streets, Santa Caterina and Ribera that aspire to improve their lighting. Regarding the calendar, councilor Albert Batlle explains that the Consistory proposes keeping the lights for several months: “The will is that the measure be implemented, now and in the future, during the winter time period, approximately between the last weekend of October and the last weekend of March.” Two keys: trade and security. Batlle too confirm that the measure pursues two objectives: to favor the businesses and residents of the area and to put an end to alleys in which pickpockets find refuge. “We want to improve the lighting of some small streets in Gòtic and Sant Pere, Santa Caterina and la Ribera to promote commercial, cultural and social revitalization, and also to improve the feeling of security, especially on days with fewer hours of daylight,” he adds. “We are working on the formula to enhance this network.” “They give them more qualms”. The measure appears to have had good reception among the businesses in the area, which even proposed expanding the list of roads that were initially going to benefit from the lights. “If the streets are more illuminated, walking becomes safer and commerce will benefit,” recognize to The Newspaper David González, from the Via Laietana Merchants Association. Proof of how convincing the measure is is that at the time some businessmen from Born they already started to hang garlands at your own risk. “People go along Paseo del Born very happy because the promenade and the streets are usually well lit. But the dark alleys make them hesitant.” The idea has also been found with detractors who consider it a patch. But… Does it work? Although he has achieved reduce your crimeBarcelona usually appears in the area highest of the rankings about the cities insecure from Spain. The key is whether more public lighting will translate into greater real safety, a question that has generated debate in recent years. What they do seem to confirm cases like that of Vigo is that a good commitment to street lighting (even if it is seasonal) serves to attract thousands of visitors. Images | Barcelona City Council (X) and Núria (Flickr) In Xataka | The upper area of ​​Barcelona no longer interests the rich: the Eixample has become fashionable and its neighbors tremble because of the prices

Europe believes it has won the gas war against Russia, but it has forgotten one small detail: infrastructure

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Europe has made a historic decision: 2027 will be the year in which the last trace of Russian gas disappear from the energy system of the continent. However, between the offices in Brussels and the reality of homes there is a chasm that is not measured in cubic meters, but in months of construction. The continent’s security no longer depends on diplomacy with the Kremlin, but on the speed at which terminals can be erected, tubes connected and ships deployed. The new European sovereignty is in the hands of the engineers. A system to build. As analyst Giacomo Prandelli explainsthe focus of the Liquefied Natural Gas (LNG) market has been on the price, but the real crisis is infrastructure. Europe is in a frantic race to replace Russian gas, but much of the necessary capacity is still under construction or in the planning phase. This has created a golden opportunity for a very select group of companies that own the physical assets. According to Prandelli, there are vital European companies that still go unnoticed. He gives as an example a firm valued at 662 million euros that operates “at a bargain price”: Their profits are very high compared to their stock market value and, most importantly, they already have government contracts secured until 2030. They are, basically, the owners of the “plugs” that Europe is forced to go through. The reasons for structural change. The reason for this urgency is an irreversible “divorce”. According to data collected by OilPriceRussian exports by gas pipeline to Europe have fallen by 44% in 2025, reaching lows in the 1970s. The definitive closure of the Ukrainian route this December leaves the continent without its historic arteries. The reasons for this new reality are three: US dependence: US gas It already represents 56% of LNG imports in Europe. The July 2025 agreementby which the EU will buy 750 billion dollars in energy from the US, has reconfigured the global board. The physical rigidity of the system: Although there is plenty of gas in the global market, European regasification plants (especially in the Netherlands) have operated at the limit of their technical capacity. Spain has the gas, but cannot send it to the rest of Europe: its pipelines with France they only allow export 8,500 million m³ per year. The problem is not the lack of fuel, it is the “funnel” of the pipes. Gas as an eternal backup: A report from McKinsey & Company issues an uncomfortable warning: Gas demand will grow by 26% until 2050. Europe needs gas to stabilize its electricity grid when renewables fail. The energy transition, far from eliminating gas, has turned it into a “permanent strategic pillar.” The Black Sea axis and the ghost fleet. However, the European wall has cracks. Hungary and Slovakia they keep injecting money to the Kremlin via the Druzhba pipeline and the TurkStream route. While Brussels asks for disconnection, Budapest and Bratislava build new connections towards the Black Sea, claiming that the cut would be “economic suicide.” Added to this is the fear of the “ghost fleet.” Brussels fears that Russian gas will repeat the oil scriptan opaque market of ships that change flag and documentation to hide the origin of the gas. To avoid this, the EU has imposed fines of up to 3.5% of global turnover and certificate of origin systems, but the crude oil precedent shows that, when Europe closes a door, the market usually opens a clandestine window. Europe’s floating lifebuoy. Given the slowness of concrete, a technical solution arises. According to Professor Alexandre Munspoints towards FSRUs (Floating Storage and Regasification Units). These ships are mobile regasification plants that use the heat of the sea to process the gas. According to Muns, their advantages are the speed of deployment and the cost since they can be rented for about $155,000 per day. Giants such as Excelerate Energy or Höegh LNG are those that today allow the EU to keep the pulse. Without these ships, the gas crossing the Atlantic simply would have nowhere to enter the continent. The tyranny of the calendar. Europe closes 2025 with deceptive calm. As reported by El Economistaprices have fallen to four-year lows (€27/MWh) thanks to a mild winter and the constant flow of ships. But, as the president of Sedigas, Joan Batalla, warns, this stability is “conditional.” Any extreme cold snap or technical failure in a saturated terminal could skyrocket prices again, because the network operates without margin for error. Europe’s autonomy is no longer negotiated in Moscow; It is built in the ports of Germany, in the interconnections of the Pyrenees and in the FSRU shipyards. The success of the 2027 plan will not depend on politicians’ promises, but on cranes and welders finishing their work before the climate changes the rules of the game. Image | freepik Xataka | The European Union has finally made the decision that has terrified it for so many years: stop importing Russian gas

Almost all phones with optical zoom have the same problem. This Chinese brand believes it has solved it in a curious way

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The greatest illusion trick in mobile photography is continuity between cameras. When we zoom from 1x to 5x on a telephoto smartphone, we are not moving lenses like on a camera; the mobile jumps between fixed sensors and fills the gaps with digital cropping and AI. The result is those sudden jumps in color and image in the viewfinder and a loss of quality in the “intermediate zooms” that we make when pinching the screen. Tecno, the star brand of the giant Transsion—the fifth largest manufacturer in the world hot on Xiaomi’s heels in some markets—has taken advantage of its annual event to present two technologies that attack precisely this problem: a zoom that does not “jump” and a periscope that shrinks. Optical continuous zoom. And from an increase, up to nine. The most ambitious proposal is the “Freeform Continuum Telephoto”. On paper, it promises to maintain optical sharpness throughout. It represents an important leap, although it is not the first: Sony tried it with the Xperia 1 IValthough its range was more limited. LG also showed similar concepts a few years ago, but no one had promised to cover the main angle lens to the long telephoto lens in a single module. To achieve this milestone without turning the mobile phone into a brick, the Chinese firm moves away from the traditional design of lenses that move longitudinally. Instead, they turn to physical principle of the “Alvarez Lenses”: a system that employs two lenses with free-form surfaces that move perpendicular to the optical axis. By sliding one over the other from the side, they change the optical power of the set and achieve that zoom effect. This technology is related to recent reports that Samsung was developing cameras with continuous zoom for Chinese manufacturers. A periscope that folds on itself. The second innovation presented by Tecno attacks the volume. We are obsessed with increasingly larger sensorsbut the space inside the mobile is finite. Periscopic telephoto cameras require a lot of space, but Tecno and its “Dual-Mirror Reflect Telephoto” promise to reduce the size of the module by 50% and its height by 10%. Instead of a simple prism that bends light 90 degrees, the system uses coaxial optics that bounce light multiple times inside the lens using reflective mirrors. It is what allows long focal lengths in a shorter physical distance. However, this design has a physical trace– When using a central obstruction, the bokeh is not circular, but rather takes on a donut shape. Tecno sells it as an artistic feature, the truth is that it is a consequence of mirror optics. Battle against the accused. The new thing from Tecno comes at a time when mobile photography It depends a lot on the processing what are you looking for the photo instagrammable above realism. Going for better optics instead of digital cropping and AI rescaling seems to be the right direction to achieve naturalness. However, we must maintain some caution. The challenge of this zoom is not only that it works, but that it is bright. Maintaining a decent aperture throughout that range is no easy task. If the system is too dark, the ISO will shoot up, generating noise that the software will have to remedy: back to processing. For the moment, we must wait to see if these concepts end up in a commercial mobile phone. Images | Techno In Xataka | I am an amateur photographer, and I will tell you which are the best phones to take almost professional photos without leaving you a fortune.

In the midst of a race towards immortality, China believes it has found a way for us to live 150 years: with grapes

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Aging is the objective that a good part of society has right now with different diets to look younger, ‘anti-aging’ treatments or even cocktails that promise this (although our biology has a fairly clear limit). Now, China is targeting a biotechnology company that affirms be developing a pill capable of prolonging human life to 150 years. A simple grape. A priori it seems that it has nothing to do with human aging, but we are quite wrong. The Shenzhen biotechnology company claims to have identified in its seeds a compound called procyyanidin C1 (PCC1) which achieves the effect that many want and has a great antioxidant effect. Zombie cells. To understand how this supposed miracle compound works, we must first talk about the enemy of aging: senescence cellular. As time goes by, some of our cells stop dividing, but they do not die. They remain in a state of limbo, accumulating in the tissues and secreting inflammatory substances that damage neighboring cells that are not so lazy and continue dividing. These cells that do not want to die is what known as ‘zombie cells’ because in the end there are quite a few parallels. As. Once taken into account, this is where PCC1 comes into play, which is nothing more than a natural flavonoid. Where the interesting begins is in a key study published in Nature Metabolism where it is pointed out that PCC1 acts as a senolytic agent. This means that it has a fairly important selective capacity to act on the cells that are bothering us the most. Specifically, at low doses, PCC1 inhibits the toxic substances emitted by zombie cells, but at high doses it kills them without harming healthy cells. And up to this point everything is quite solid, since it has been scientifically proven. There are ‘buts’. The scientific basis that the Chinese laboratory uses for its claims comes almost exclusively from animal models to whom this substance was applied. In this way, the researchers achieved several things by applying PCC1 on old mice: Reduce the load of senescent cells in vital organs. Reverse motor dysfunctions, making the mouse have more strength and better balance. Increase life expectancy between 9 and 60%. The big ‘but’ we found is that it has only been tested on mice and not on humans. And given this we can ask ourselves something quite simple: why are we skeptical about the claim of 150 years in humans? There are several reasons to be so. The first of them is that saying that because a mouse lives 60% longer, a human will live 60% longer is also a biological fallacy. The metabolism of mice and humans is not similar at all, and that is why there are drugs that, although they have worked in a mouse, have failed in humans. we are not equal with the mice. That’s why we don’t age in the same way. Although it is true that humans have senescent cells that are related to aging, we are much more complex. Aging involves genomic instability, telomere shortening, mitochondrial dysfunction, and stem cell exhaustion. That is why cleaning the ‘zombie cells’ could improve health in old agebut it is unlikely that on its own it will make us exceed the current biological limit of our species. This is also added to the fact that to date there are no published clinical trials that support the safety and effectiveness of using this compound in the human body. That is why, in conclusion, we can conclude that PCC1 is a very important finding to identify a door to therapies that make us age better. But talking about extending life to 150 years undoubtedly presents many doubts, since surely this ‘Chinese pill’ will not make us immortal overnight. Images | Maja Petric Daniel Franco In Xataka | Not all brain cells age at the same time: we have found a “hot spot” of aging

We have been searching for dark matter for 90 years. Now a Japanese man believes he has found his “fingerprint”

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Since Fritz Zwicky suggested the existence of dark matter in 1933, the reality is that it has been one of the great ghosts of modern physics, generating many debates about its existence. The little we know indicates that this matter is there because we see how its gravity pushes galaxiesbut we have never been able to see it or touch it. It is invisible. Or at least, that’s what we believed until now. And to ‘see’ this matter you have to be a true superhero, since it does not emit, absorb or reflect light. Something that makes it completely invisible to telescopes around the world. But it is not something that is a small part of what surrounds us, but which makes up 85% of the total matter in the universe. But now there is hope to have more information about this great mystery of physics thanks to a study Professor Tomonori Totani of the University of Tokyo claims to have found the first direct evidence of this elusive substance. He has not seen it directly with his own eyes, but he has detected the “smoke” of his gun: a very specific gamma ray signal emanating from the halo of our own Milky Way and that eerily coincides with theoretical predictions of how dark matter behaves. A large amount of data. To understand the discovery, you have to look at the sky with gamma ray eyes. Totani has used a total of 15 years of data accumulated by NASA’s Fermi Gamma-ray Space Telescope (LAT). But the important thing was undoubtedly knowing where to look: in the galactic halo. That is, the ‘quiet’ outskirts of the Milky Way, excluding the galactic disk to avoid interference. What he found when cleaning the background noise was surprising: an excess of gamma rays with a very specific energy peak, located at 20 billion electron volts (20 GeV). The importance. So far so good, but… Why is it important? Basically, because it doesn’t fit what we would expect from normal astrophysical sources, like pulsars or supernova remnants. However, it fits like a glove for the WIMP theory. This is a theory that basically suggests that dark matter It is made up of WIMPs (Weakly Interacting Massive Particles). According to physical models, when two of these particles collide, they annihilate each other, releasing a cascade of energy in the form of gamma rays that would be detected in the universe now. And that is their conclusion: the detected signal is compatible with WIMP particles that have a mass of 500 times that of a proton. This would, therefore, be the fingerprint that gives the most information about dark matter, although it does not stop there. The shape is not a point on the map, but a soft, spherical halo that surrounds the galaxy, just as dark matter is distributed in the cosmological simulations that physics has made. The same goes for consistency, since the signal persists even when different background models are used and other known sources of noise in the universe are removed. There are precedents. This isn’t the first time someone has yelled “Eureka!” In the past, excess gamma rays have been detected at the Galactic Center (known as GCE), but the scientific community has tended to think that this signal comes from undetected millisecond pulsars, rather than dark matter. The key to Totani’s study is that he has looked where no one was looking in such detail. By moving away from the center and analyzing the diffuse halo, it is where he has found a much cleaner signal that does not invite so many doubts about its origin. There are still doubts. The study itself admits that the calculated cross section (the probability of interaction) is higher than the upper levels established by the observation of dwarf galaxies, which are often used as scale for dark matter. This means two things: either our models of the density of dark matter in the Milky Way are incorrect (which is possible, since there is a lot of uncertainty in the profile of the halo), or we are looking at a new and unknown astrophysical phenomenon that mimics dark matter. A great mystery. If this finding is confirmed, we would be facing one of the greatest discoveries in physics of the 21st century. It would confirm that dark matter is composed of particles that we can detect (and not primordial black holes) and open a new door for physics. go beyond the standard model. But as we say, this still needs to be verified by a second laboratory such as the Cherenkov Telescope Array Observatory (CTAO) that may have the ability to detect these gamma ray spectral lines. Image | A. Schaller (STScI) In Xataka | Exactly 100 years ago we began to understand how the world works. Quantum physics has radically changed our lives

how much science believes our longevity will actually increase

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Society is increasingly obsessed with living longer and longer and have an aesthetic that corresponds to a younger age. Right now there are many really eloquent projects to achieve practically immortalitybut this makes us wonder if our body has some kind of limit that cannot be exceeded. This is what science tries to elucidate. Nowadays, people who live more than one hundred years are something extraordinary, and we even see their centenary birthdays appear on the pages of the newspaper or on local television programs. But the question in this case is whether the new normal will be being able to live more than a century as something normal, and above all in good conditions. But the truth is that we are far from achieving this. Two concepts. The first thing to understand here is the difference that exists between the average life expectancy and maximum longevity. The first of these is growing spectacularly in the last century thanks to vaccines, hygiene, medications and better access to healthcare (although this reaches an older population, with its problems). But when we talk about maximum longevity we cannot say the same, since it is a much harder ceiling to crack. The obligatory question in this case is clear: where is our ceiling that we cannot break? Less than expected. There is now solid scientific evidence that suggests that human beings have a “factory” biological limit. Different studies, such as those published in Nature, they placed the natural human limit around 115 years. Although more recent and optimistic reviews, based on statistical modeling of the “supercentenarians” (people over 110 years old), extend that range up to 125 years. Therefore, we are not facing a scenario of immortality, but rather the age progression curve begins to stabilize at a specific point. And this is clearly a brake that biology itself is imposing on us, because our body has a very clear limit in its functioning. Prioritize well-being. Reaching the age of 120, but with very poor health, with many illnesses behind you or without being able to move, is not something at all attractive. That is why demographic projections for Europe They suggest that, by the year 2065, life expectancy will be between 87 and 93 years. This doesn’t sound like science fiction, and that’s precisely why it’s relevant. It is not about making quantum leaps through unproven gene therapies, but about the accumulation of medical and social improvements. The goal of modern longevity medicine is not for you to live 150 years connected to a machine, but to extend the “healthspan“, that is, the period of healthy life. We already know the ‘secret’. While we wait for drugs that reverse old age, science tells us that we already have the “technology” to maximize our lives and it has been used for decades in the so-called ‘Blue Zones’ of Okinawa as a standard. And it is precisely in this area that people It is capable of easily reaching 100 years without much problemand the question was obligatory: why here? We found the answer in studies carried out in this areait can be seen that the factors that influence being able to reach 100 years of life have nothing to do with transfusions of young plasma, blood cleansing or super-expensive therapies that promise miraculous results. Among the habits that follow we can find the following: Natural calorie restriction: They consume 10-15% fewer calories than an average Western adult. And we already know that this influences above all the generation of oxidative stress which is a great ‘poison’ for our body. The good carbohydrate diet: their diet is based on vegetables and complex carbohydrates such as sweet potatoes, with a very low animal protein intake. Youth biomarkers: the combination of diet and constant physical activity results in a lower incidence of chronic diseases. Less stress: another great poison for the body due to its involvement in cortisol levels. In Okinawa, community cohesion acts as a buffer for stress. The importance of habits. In this way, the scientific horizon for the next century does not promise immortality. It is likely that we will continue to see a trickle of individual records and exceptional cases of genetics that cause us to see people who far exceed the century of life. But for most humans, This is not something we get. (or at least with a good quality of life). The true longevity revolution in the 21st century will be to make reaching age 90 the norm and not the exception, applying what we already know works: moving, eating less (and better) and maintaining strong social ties. And above all, do not wait for a magic pill, as has been demonstrated by the habits of Japanese people who have achieved an effect that no gene therapy has achieved so far. Images | Ravi Patel In Xataka | Not all brain cells age at the same time: we have found a “hot spot” of aging

The “godfather of AI” believes that AI LLMs are a dead end. Meta has turned him into a vase scientist

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Yann LeCun has been warning for years that Generative AI is stupid. The current models, he claimed a year ago, are no more intelligent than a domestic cat. This speech has become especially uncomfortable especially because LeCun, considered one of the godfathers of AI, was until now one of the most responsible for this segment in Meta. Now everything seems to point to an imminent departure that will see LeCun found his own startup. Why is it important. While AI companies strive to train AI models by collecting more data and spending billions of dollars on computing power, LeCun is clear that this strategy is a dead end. It is something we have been talking about for a long time and that other experts like Andrej Karpathy have also have warned: This scaling of resources previously allowed notable leaps in performance. Not now. He knows what he’s talking about. In 2003 LeCun joined New York University and later founded the institution’s Data Science Center. In 2013, Mark Zuckerberg recruited him to lead his new AI division at Facebook called FAIR (Fundamental AI Research). In 2018, LeCun, along with Geoffrey Hinton and Yoshua Bengio, won the Turing Awardthe highest honor in computer science, for his contribution to the study of neural networks. LLMs must give way to “world models”. LeCun has prophesied that within three to five years no one in their right mind will be using today’s LLMs. Instead of them, the architecture that will triumph will be that of the so-called “world models”which learn from the environment through visual information, similar to how a baby does, in contrast to LLMs, which are predictive models based on vast text databases. Internal tension. That vision of LeCun has ended up being a problem in Meta. Mark Zuckerberg does not seem to have the same opinion, and in recent months he has made it clear. with a bet multimillionaire in which ended up signing talent and creating its new superintelligence division that precisely reinforced the role of the LLM that LeCun sees as useless. An uncomfortable situation. These signings have caused the FAIR Group that LeCun led to lose prestige, resources and weight in the organization compared to that new AI research organization led by the new rising star, Alexandr Wang. Exit in sight. Last week the first rumors appeared that LeCun is planning his departure from Meta to create his own startup. Precisely this new company would explore the creation of those models of the world that this scientist and researcher wants to develop in depth. If he executed that step, it is very likely that the investment world would support that vision and offer him sufficient funds to work on it. It has happened with startups Ilya Sutskever and Mira Muratithat without having visible product They have achieved multi-million dollar financing rounds. LeCun seems to be right. The evolution of LLMs seems to confirm LeCun’s theory that they are not the valid way to achieve truly notable advances in the field of AI. What current models do is not so much solve problems as locate past instances of solved problems to use probability and apply answers. Don’t even think about pursuing LLMs.. In recent months, LeCun’s work in Meta has become more blurred and he has been seen participating in several conferences. In one of them gave a message clear to those aspiring to get into this field: “if you are a PhD student in AI, you should never work with LLMs.” Image | Goal In Xataka | The only advantage Apple could have in AI was its private cloud. It has been copied by the person we least expected

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