effect

We think that the fan saves us from the heat, but above 35 degrees it achieves exactly the opposite effect.

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With the arrival of high temperatures, the fan becomes a great ally in many homes that cannot have the air conditioning on all day long. When you turn it on, it blows the air into your face and you feel almost immediate relief from the heat, but the reality is that we do not have this effect at any temperature, since there is a point beyond which it not only stops being useful, but can become our worst enemy. It doesn’t cool the air. To understand why a fan can be dangerous, you first have to understand how it works. Just like point out the guidelines of the According to the WHO on indoor temperatures, fans do not lower the temperature of the room even a single degree, since all they do is move the air. The relief we feel is due to a purely physiological mechanism which is the evaporation of sweat. By moving the air around us, the fan accelerates the evaporation of moisture from our skin, which “steals” heat from our body and cools us down. But the problem comes when the air in the room is hotter than our own body. The critical point. The normal temperature of human skin is around 35ºC and thermoregulation systems try to keep it that way. The problem arises when the ambient temperature of the room exceeds that figure, since the fan will begin to move air that is hotter than the temperature of our skin, and instead of dissipating body heat, it will be injecting heat from the environment directly. And it is something that is supported, for example, by the Basque Government’s Heat Plan, which point that fans stop being effective and useful when the air exceeds 35-36 °C. But in the United States they are even more demanding, since the CDC advise against its use above 32.2 ºC. Beyond temperature. Although the general rule says that above 35 ° C you should turn off the fan, science suggests that humidity matters as much or more than temperature. Thus, in dry heat conditions the fan is harmful, since if the air is hot and dry, the sweat evaporates on its own without needing help from the fan. But turning on the fan only pushes hot air against the skin. In the case of being in a humid environment, sweat does not evaporate as well, and that is why we feel ‘sticky’, especially in a coastal environment. In this scenario, the fan does help to break up that layer of humidity, and the Sydney studies showed that they can continue to be beneficial even up to 42°C. The most vulnerable. Despite these data, the highest authority in medical literature review, Cochrane, posted a review in which it points out that there is no high-quality evidence that unequivocally demonstrates that fans reduce the adverse impacts on heat waves. The reason is precisely in the mix of factors such as humidity, age and, above all, the state of health with which we face these high temperatures. But we must focus above all on age, which is a critical factor, since the body’s ability to sweat and thermoregulate decreases with age or with certain medications. This is why a fan can save a young person from trouble, but it can dehydrate and cause heat stroke in an older person under the same conditions. Images | Dương Nhân In Xataka | What science says about the “trick” of two crossed fans to cool the house: it works, but with limits

manual shifting has “a significant effect on maintaining mental health and cognitive function”

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A study from Tohoku University (Japan) has put figures to something that many motor fans have been defending for years out of pure passion. And although there are not exactly a few enthusiasts who claim that driving with a manual transmission is more fun, now they could also have science on their side, since according to the study, they also could be healthier for the brain. And the person who claims it, curiously, is the scientist behind one of Nintendo’s best-selling video game sagas. 20 years ago, I trained our brain. The study is led by Professor Ryuta Kawashima, a neuroscientist at the Institute of Development, Aging and Cancer at Tohoku University. His name will be familiar to anyone who has played any of the Nintendo titles in which he stars, since he was the scientific person behind the Brain Age saga and Dr. Kawashima’s Brain Training, the “mental gymnastics” games that Nintendo published between 2003 and 2020. What it says about the manual transmission. The neuroscientist’s research analyzes the brain activity of drivers behind the wheel of manual and automatic cars, and finds clear differences in the prefrontal cortex, the region of the brain responsible for memory, decision making and attention. According to collect Japanese media Best Car Web, Kawashima explains that when driving a manual “you have to judge and then choose the optimal gear according to the situation, and this places a greater burden on the cognitive functions of the brain than driving a passive automatic.” In the end, we must keep in mind that choosing the right gear, pressing the clutch, moving the lever and dosing the accelerator simultaneously forces the brain and body to constantly coordinate, something that anyone who has stalled a car while learning to drive can confirm. Between the lines. That small repeated effort, according to the professor, has benefits that go beyond the simple pleasure of driving. Kawashima holds that doing so regularly has “a significant effect on maintaining mental health and cognitive function.” So changing gears daily could act as a kind of low-level brain training, the kind that the brain stops receiving when the car does all the work for us. Any habit capable of keeping the brain active adds up. And in societies with increasingly aging populations, like the japanesehaving this stimulus is important, since cognitive deterioration and dementia are increasingly accentuated public health problems. And yet. The paradox is that, while science has reasons to defend it, the manual transmission begins to disappear from the market at full speed. In Japan and the United States it barely represents between 1% and 2% of new cars sold, according to the data collected in the study itself. The emergence of hybrid and electric vehicles, as well as the comfort offered by this type of transmission, has meant that the manual transmission is beginning to be seen less and less. Photography is still different in Europe, although we are also heading towards this future. In Spain, according to Engine1we maintain a rate of manual cars of around 41% of sales, only surpassed by Italy, with 48%. So you could say that in Spain we continue to maintain a good level of stimulation for our brain while driving. Cover image | Nils Keesmekers In Xataka | Anti-electrics lose an argument about car batteries: a study confirms that they are more durable than previously believed

Climate change has a lethal side effect that we are only just discovering: it locks us in the house and prevents us from moving

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The increasingly frequent heat waves are not harmless for the population as they cause thousands of deaths each year, with vulnerable people being the most affected by this unwanted effect. But beyond this, which is what impacts anyone the most, we are also seeing how the increase in temperature is causing let’s reduce our physical activitysince when the street becomes an oven, sedentary lifestyle skyrockets. It is studied. The first major published work In this regard, he appeared on the scene in March of this same year and analyzed data from 156 countries collected between 2000 and 2022 to identify the “thermal frontier” in which our behavior changes radically from having good physical activity to moving to a sedentary lifestyle. With all this data, the limit was placed at 27.8ºC average temperature, since, according to the study, for each additional month in which a country exceeds this average temperature, global physical inactivity increases 1.5 percentage points. And it is not a simple summer anecdote, but stopping walking, running, cycling to work or playing in the park has direct physiological consequences. In Xataka The El Niño numbers are so strong that they are beginning to make half the world nervous. We have to be able to differentiate risk from hysteria Looking to the future, The figures are chilling, since if we continue with the current trend in an inactive manner, physical inactivity caused exclusively by excess heat will cause between 470,000 and 700,000 premature deaths additional each year around the world. Added to this is the economic impact, since lower productivity and increased medical spending will mean annual losses of between 2,400 and 3,680 million dollars. Spain, Due to its geographical location and its tendency towards desertification, it has been identified as one of the European countries most affected by this phenomenon, along with critical regions such as Central America, the Caribbean, sub-Saharan Africa and Southeast Asia. Because? To understand the reasons that reach these extremes, we have to look at another study that analyzed 74 years of hourly data, combining temperature and humidity to coin the concept ‘limiting heat’. With this term we talk about those environmental conditions in which the human body cannot carry out physical activity outdoors without its core temperature reaching dangerous levels. The most alarming thing about the study is the speed at which we are losing “working” hours per year. The annual time we spend in conditions of “severe livability limitation” has doubled since the 1950s, and it is not something that affects only the elderly. It affects us all. In young adults, historically there were about 25 hours a year of heat so extreme that it prevented them from moving safely. But today that figure has shot up to 50 hours annually and continues to increase. In the case of those over 65 years of age, their tolerance threshold is lower and they have gone from suffering 600 hours of climate confinement per year to more than 900 hours per year. This means that they spend more than 10% of the year in restrictive environmental conditions. In Xataka The map that splits Europe into two when the heat arrives: where there is air conditioning and where there isn’t He pushes us to the couch. The WHO itself has been warning that climate change acts as a “threat multiplier.” Here we have the perfect example, since heat not only makes us directly sick, but also enhances other modern pandemics such as obesity, cardiovascular diseases and diabetes by promoting a sedentary lifestyle. The solution is not just to tell people “go out and do sports earlier” or “join a gym with air conditioning.” Pass byrethink citiessince if the streets do not have shade, if the parks are cement slabs without climatic shelters, and if urban planning does not adapt to the new temperatures, going for a walk will cease to be a medical recommendation and will become a risky sport for four months a year. In Xataka | The networks are filling up with maps that promise the end of the heat. One thing is what we would like and another, very different, is what we know (function() { window._JS_MODULES = window._JS_MODULES || {}; var headElement = document.getElementsByTagName(‘head’)(0); if (_JS_MODULES.instagram) { var instagramScript = document.createElement(‘script’); instagramScript.src=”https://platform.instagram.com/en_US/embeds.js”; instagramScript.async = true; instagramScript.defer = true; headElement.appendChild(instagramScript); – The news Climate change has a lethal side effect that we are only just discovering: it locks us in the house and prevents us from moving was originally published in Xataka by José A. Lizana .

We thought that Ozempic was only good for losing weight. Its last side effect is a brake on violent impulsivity

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If there is a family of medications that has made headlines in recent years, it is the GLP-1 receptor agonists, although they will probably be more familiar to you if we say ‘Ozempic‘ either ‘wegovy‘. These drugs began by revolutionizing the treatment of type 2 diabetes, but it was all a very effective way to ‘treat’ obesity. But soon after, scientists began to notice something fascinating when they saw that patients said they also lost the desire to drink. alcoholsmoking or nail biting. After investigating it. A new studyor have taken these first indications of the suppression of impulses one step further, entering the field of crimonology and have seen that it can be a way to reduce violent crimes. To reach this point, the researchers analyzed, through a survey, 821 adults who had used GLP-1 drugs at some point. After this, the study separately analyzed current users of these medications with former users to see exactly the effect the medication can have on points that go beyond food consumption. The results. What they found is not that Ozempic “reduces crime,” but something much more subtle: in current users, the association between impulsivity traits or alcohol consumption and violent behavior was significantly weaker. That is, the drug seems to act as a buffer, since in an unmedicated person, high impulsivity combined with alcohol consumption is usually a cocktail that facilitates aggressive behavior, since something that is well proven is the relationship between alcohol and violence. But in patients under treatment with Ozempic, this transition between “feeling the impulse” and “executing the violent action” seems to be attenuated, which could prevent the transition to committing a crime of intent. Because? To understand why a metabolic drug could have behavioral effects, we have to look at the brain, since GLP-1 agonists act on brain areas involved in the reward system and appetite regulation. The clinical context of this phenomenon is increasingly documented, since a randomized, double-blind, placebo-controlled trial published in JAMA Psychiatry demonstrated that semaglutide reduced craving and several drinking metrics in adults with alcoholism disorder. This medical trial has much greater causal weight than the criminological study and provides a solid clinical basis by pointing out that GLP-1 modulates our relationship with substances and immediate gratification. With violence. With all this we can make it clear that, if on the one hand alcohol is reduced and on the other the impulsivity felt when thinking about committing a crime, indirectly two of the main catalysts of violence are being reduced. The small print. With these types of findings, it is easy to fall into sensationalism and think that we are facing the ‘Clockwork Orange’ pill. However, it must be emphasized that the published study is observational and cross-sectional in nature. This means that a kind of ‘still photo’ of the situation has been taken without following up on the participants to see how their impulsivity evolves over time. Images | David Trinks In Xataka | We thought Ozempic was only for weight loss. Science is seeing that it can end alcoholism

Science also begins to study the effect of art and culture

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“Ah, a lot of gym. But it works the brain a little too.” When Shakira uttered this phrase, immediately converted into a global meme thanks to her session with Bizarrap, she certainly did not intend to lay the foundations for a new scientific hypothesis about aging. And yet, in the midst of the era of biohackinglongevity supplements and timed wellness routines, a recent British study has just put the focus exactly there: on the brain, emotions and culture. We have been hearing for years that the secret to aging gracefully involves count grams of protein, lift weights, nail eight hours of sleep, avoid glucose spikes and of course reach the sacrosanct 10,000 steps a day. Longevity has become a cocktail of science, aesthetic obsession and multi-billion dollar industry. However, a team of researchers from University College London (UCL) has put an unexpected ingredient in the shaker: visiting museums, getting lost in a good book or vibrating at a concert also tangibly influences how our body ages. The investigation, published in the scientific journal Innovation in Aginganalyzed data from 3,556 British adults over 50 years of age. Pulling the thread of the English Longitudinal Study of Aging (ELSA)—one of the most ambitious European projects on the subject—scientists crossed two seemingly unconnected worlds: cultural habits and physical biomarkers. On the one hand, they recorded how often these people went to the theater, visited galleries, listened to music, danced or painted. On the other hand, they measured their biological clock through blood tests and epigenetic data. The main conclusion was that those who participated in cultural activities at least once a week showed biological aging approximately 4% slower than those who only carried out this type of activity a few times a year. Furthermore, according to one of the indicators used by the team, the most culturally involved people had a biological age close to one year younger than the least culturally active participants. Professor Daisy Fancourt, lead author of the study, explained in the UCL statement that the results suggest that “artistic and cultural activities should be considered beneficial health behaviors, similar to physical activity.” The museum is not a magic pill It is advisable to curb your enthusiasm: the study does not say that reading Tolstoy will take away your wrinkles or that an exhibition replaces a good cardio session. Nor does it guarantee that listening to Clara Schumann automatically lengthens your life. What is evident is a strong correlation. People who often participate in cultural activities have better aging indicators, but correlation does not imply causation. As I well remembered Guardianmany experts insist that this type of research should be interpreted with caution. People who frequently consume culture also tend to share other factors: higher educational levels, higher incomes, less financial stress, healthier lifestyles, and a stronger emotional support network. Although the authors adjusted the statistics to isolate variables such as smoking, previous physical exercise or socioeconomic status, cleaning the equation of all confounding factors is an almost impossible task. Still, the findings dovetail perfectly with an increasingly robust line of science that underscores the biological impact of emotional health and social connectedness. According to the magazine Healththe secret is not in the museum or the book itself, but in what happens inside us when we enjoy them: stress is reduced, isolation decreases, the brain is stimulated, we regulate our emotions better and we receive a good shot of dopamine. Art would not cure by itself, but it would trigger physiological processes that do stop biological deterioration. And that, without a doubt, changes the terms of the conversation. Beyond muscle and metabolism Perhaps the truly revolutionary thing about this study is not that “4% slower”, but the paradigm shift it puts on the table. We have been understanding healthy aging for decades almost exclusively through physical parameters: diet, sweat and cardiovascular prevention. All of that remains essential. In fact, the study itself does not at any point question the benefits of physical exercise. But contemporary science is embracing a broader idea: aging is not just a metabolic or muscular process. It is an emotional, mental and deeply social process. Concepts as the “cognitive reserve” —the protective shield that the brain creates against deterioration thanks to continuous intellectual stimulation— are already common in neuroscience. Learning, having stimulating talks or being impacted by a work of art strengthen that shield. At the same time, disciplines such as psychoimmunology they are teaching us how loneliness, chronic stress or depression punish the body through inflammation and hormonal imbalances. Social isolation is already a major cardiovascular risk factor. This is where culture jumps out of the drawer of mere “entertainment” to reveal itself as a key tool for physiological well-being. The interesting thing is that the study does not talk about extraordinary habits or impossible routines. It talks about everyday practices such as reading a few pages before going to sleep, listening to music on the way to work, commenting on a movie after the cinema and going to an exhibition on any given Sunday. Small cultural gestures that, according to this line of research, could have more biological impact than it seemed. In fact, in the UK this has already jumped from theory to practice. The British health system has long been promoting “social prescription” (social prescribing), a strategy where doctors refer patients to community and cultural activities as a complement to traditional medicine. Reading groups, art workshops, choirs or gardening are prescribed to combat anxiety, cognitive decline or depression in older people. Daisy Fancourt herself is a pioneer in this field, documenting in his book Art Cure how art tangibly intervenes in physical and mental health. The antidote to the stress of hyper-optimization That this study has gone viral reveals something deeply contemporary: collective exhaustion in the face of the tyranny of productive well-being. Today, wanting to live longer seems too similar to an endless spreadsheet– Measure steps, macronutrients, heart rate, REM sleep, and ice water immersion. In such a gridded panorama, … Read more

Ozempic’s great challenge is the rebound effect. Science already has two promising solutions to avoid it

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The rise of medications such as Ozempic, wegovy o Mounjaru has completely transformed the clinical and social landscape of the weight lossmaking many people do not hesitate to ask their family doctor to prescribe it in order to lose weight and also regulate blood sugar. The results during treatment are undeniable, but the big question it raises about medical consultations is what exactly happens when the medication is stopped. What we know. One of the most feared points of this type of treatment is the ‘rebound effect’ which causes that, at the time of stopping the treatment and if eating habits have not been adjusted, a large weight gain will be seen. This is something that causes many people to see that this treatment only gives a few months of ‘thinness’, but science is now trying to avoid this effect. The rebound. An exhaustive analysis published in The BMJ finally put exact figures on this phenomenon so that you can speak appropriately to patients. And what has been seen after analyzing 9,300 participants is that patients recover an average of 0.4 kilos per month after stopping treatment. At this rate, the return to the initial weight before starting therapy occurs in just 1.7 years. But this is also accompanied by a loss of cardiovascular shield at 1.4 years. The solution. one of them it involves taking a pill daily known as orforglipronwhich is nothing more than a non-peptide GLP-1 receptor agonistwhich means that it can be taken orally and not through subcutaneous injections. The idea here is to use the injectable treatment, which is more powerful, for the first few weeks and then transition to this daily pill to consolidate the results without the rebound effect. This not only greatly improves patient comfort, but facilitates mass production by not relying on problematic ‘pens’ containing semaglutide, and helps maintain satiety signaling at the brain level without the invasive impact of the needle. A bacteria. The second line of research points to the intestinal microbiome, by analyzing supplementation with the bacteria Akkermansia muciniphila MucT pasteurized as a tool to avoid the rebound effect after a low-calorie diet. A bacteria that is long known in the field of nutrition for its role in the integrity of the intestinal barrier. After doing the analysisit was seen that the group of patients who received the bacterial supplement recorded a weight recovery of only 13.6%, compared to 32.9% in the control group. But beyond the scale, it has been seen that this bacteria shows a notable preservation of insulin sensitivity, a crucial factor to avoid the development of type 2 diabetes and keep lipid metabolism under control. The future. We are undoubtedly at the beginning of a paradigm shift, since the medical narrative is moving from the short-term “war against kilos” to chronic and sustainable management. But logically, for this to reach the market, we must wait (and not a little) for better results and above all for it to be tested in humans. Images | stefamerpik in Magnific In Xataka | We thought Ozempic was only for weight loss. Science is seeing that it can end alcoholism

the psychological effect of “observing the Earth”

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The return trip of the Artemis II astronauts will end today, around 8:07 p.m. EDT (2:07 a.m. CET). The four members of his crew will finally return home. It’s been a little over a week since they were separated from their families. to make history. However, the people who return today are far from those who left that day. That little blue marble. Three of the four Artemis II astronauts had previously traveled to space. Only Jeremy Hansen, the Canadian astronaut, has made his debut as a space traveler with this mission. This means that most of them had already seen the Earth from outside, but not from as great a distance as they have now. They have seen in all its splendor that little blue marble that our planet becomes when the observer moves away from it. Overview effect. Although many of them had already seen the Earth from outside, with each new observation the overview effect intensifies, a concept that refers to the change in perspective on life that many astronauts claim to have experienced after this peculiar experience. The term was first coined in 1987 by space philosopher Frank White and since then many space travelers have claimed to have experienced it. When we see our planet from the outside, borders suddenly disappear. We understand that deep down we are a tiny point in the immensity of the universe and we relativize many problems, while we give more importance to others. A shared atmosphere. One of the Artemis II crew members, Christina Koch, spoke before the trip about this effect. She is the woman who has spent the most days in space, so she knows very well what it’s like to observe the Earth from outside. “What you realize is that every person you meet is held within that green line (the atmosphere) and everything else outside of it is completely inhospitable. You don’t see borders, you don’t see religious lines, you don’t see political boundaries. All you see is the Earth and you see that we are much more alike than different.” Seeing the Earth from space helps put many issues in life into perspective. Does not have a medical description. Although this effect has a certain psychological origin and has attracted the attention of psychologists for decadesit cannot be considered a disorder or anything like that. It is not included in the DSM-V, the manual that includes the diagnostic criteria and descriptions of all mental disorders. In this case there is simply a change of perspective and, in turn, great relaxation. Changes in the brain. There are studies in which the brain waves of people have been analyzed while they undertake a space trip in virtual reality. Using electroencephalography, a decrease in beta and gamma bands has been observed. This effect on brain waves occurs when there is very intense relaxation. In fact, A similar effect has been observed through activities such as meditation. In a way, observing the Earth from outside is a form of meditation. See life differently. After returning to Earth, many astronauts have made drastic changes in their lives because of the Overview Effect. For example, It was the case of Edgar Mitchellone of the astronauts of the Apollo missions. When he returned to Earth, he claimed to have felt the need to embrace a more spiritual lifestyle. Not only in space. The Overview Effect occurs when we see something magnificently amazing that makes us put everything else into perspective. Above all, astronauts experience it when they see the small Earth in the immensity of space. However, similar cases have also been described in front of a majestic landscape in nature. The 10 most intense days of their lives. During the 10 days that the mission lasted of Artemis II, its four crew members have been exposed to the normal inclemencies of a space trip. However, it has been much more extreme than other missions. They have broken the record for distance from Earth that a human being has traveled. If all goes well, they will also break the speed record for a manned spacecraft. On that return home there will be critical points such as trajectory correction, impact with the atmosphere or parachute deployment prior to landing. Very intense experiences, concentrated in one of their shortest missions. For Hansen, this is all new and he may be the one who has experienced the Overview Effect the most. But none of them will be the same person as a few days ago. They have seen what no human has ever seen. Images | POT In Xataka | Artemis II has five different hot sauces on board: the reason is a radical change in what we consider “space food”

You thought you went to the library for the silence, but science says that the “co-action effect” is responsible for your concentration.

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When teleworking or studying, you can live a very peculiar situation: Sit at your desk at home, open your laptop and suddenly feel the urgent need to tidy up the table, go to the refrigerator or check Instagram. In the end, do everything possible except do the tasks we have to do and be zero productive. But this is something that can change completely if we go to a library or the officewhere you can achieve three hours of absolute concentration. It has its explanation. It is not magic, nor is it coincidence, since the fact of being very more productive in libraries or in spaces of coworking responds to a fascinating combination of human psychology, interior design and social pressure. The psychology. The most powerful psychological factor operating in a library is what experts call social facilitation. This theory postulates that the mere presence of other people performing a task similar to ours improves our performance in routine or mechanized tasks, since we are forced to have to replicate them. Within this phenomenon, the “co-action effect” stands out, which is basically based on the fact that, when we see dozens of people around us immersed in their books or screens, our brain receives a very clear signal: It’s time to work. This behavioral contagion makes it much easier for us to stay focused and not get distracted. It’s a social comparison. Something that I myself have experienced in this sense is that the thought that one has in these situations is that “If everyone is focused, I should be too.” A simple social comparison that heightens our sense of responsibility and eliminates the temptation to procrastinate to spend some time watching TikTok. Decades of study. The neural bases of social facilitation have been the subject of different studies, highlighting a 2007 meta-analysis in different individuals that confirmed that the social context of “working” directly modulates our performance. Of course, science also suggests that this effect is wonderful for assimilating notes or advancing on known tasks, but it can be harmful if we face extremely complex mathematical or logical problems where the pressure of the environment can block us. The design of the space. Beyond psychology, modern libraries not only store books, but have been designed to have good cognitive comfort for those people who visit to work or study. This is something that evidenced in a 2024 study published in Social Sciences Communications which analyzed the environment of university libraries and how it directly influences student engagement. The conclusions drawn here were that environmental variables such as natural lighting, a controlled noise level, ventilation and the ergonomics of furniture favor positive emotional states that prolong our ability to concentrate. In addition, zoned design, such as absolute silence areas versus group work spaces or modern learning commons, allows the user to “customize” their level of isolation, significantly improving study habits, as supported by science itself. The silent pressure. If it crosses our mind to open a package of crispy chips in the reading or study room of a library, it seems like an easy task, but the pressure of the gazes of the rest of the people present makes us give up in three seconds. Libraries operate under a strict code of rules that act as firewalls against stimuli that can distract us. Being a public and academic space, study-oriented behavior is socially rewarded. On the contrary, activities that we would do at home without thinking, such as having the television on in the background, having the cell phone on, watching a video on YouTube or snacking, are perceived here as unacceptable. That is why these ecosystems force us to limit ourselves. The union in society. Finally, it should be noted that there is an identity component, since by feeling part of a temporary community of people who make efforts in the same physical space, our own academic or professional identity is reinforced. Interestingly, this phenomenon has been extrapolated to coworking spaces, and science has shown that working “alone but together” not only increases time structuring and perceived productivity, but also improves mental and physical health. Even moderate social interaction, such as a glance or a brief greeting at the coffee machine, gives us the necessary social support without becoming the constant source of interruptions that a traditional office or our own home is often. In Xataka | The great little gem of productivity is a very simple method: the “two minute” rule

We knew that Mars has gravity. Now we have just discovered the unexpected effect it has on the Earth’s climate

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I don’t need to tell you that the Earth’s climate is not constant and it is not just because of the climate change: If we look at it in perspective, throughout the history of the planet it has gone through glaciations and warm periods. Many of these changes find explanation in the Milankovitch cycles or orbital variations, that is, the slow changes in the Earth’s orbit and the inclination of its axis due to the gravitational attraction of other planets. The surprising influence of Mars. It was known that the giant Jupiter or the nearby Venus are largely to blame, but now we have discovered another secondary actor that has gained importance: Mars, as explained this study collected in Publications of the Astronomical Society of the Pacific and led by scientist Stephen Kane. What’s surprising about it? That Mars only has 10% of the mass of the Earth, hence there are simplified climate models that downplay its importance. The simulations. The hypothesis is: what would happen to the Earth’s orbit if Mars were much larger or did not exist? Since human research teams do not have millions of years to wait, they used simulations with a solar system model of ten million years each to study gravitational interactions. The only factor they changed in each simulation was the mass of Mars: from zero (Mars does not exist) to being ten times larger than Earth. Mars “weighs” much more than we think. And the results were conclusive: Mars is directly responsible for the “Great Cycle”, a 2.4 million year gravitational beat in which Mars rhythmically stretches and shrinks the Earth’s orbit, acting as a metronome that regulates the amount of solar radiation received and regulates the frequency of ice ages. Without Mars, that cycle would not exist. However, Kane nuance: “It doesn’t mean that without Mars the Earth wouldn’t have ice ages, but it would completely change the frequency with which they occur.” But if Mars were giant, Earth’s climate cycles would also change: they would be shorter and more extreme, going from an ice age to suffocating heat waves. In short, life adaptation would become more complicated. What would not change, according to the study, is the “great Jupiter – Venus cycle”, the 405,000-year gravitational pattern driven by a secular resonance of both planets that acts as the “master clock” of the Earth’s climate as it is the most stable and constant cycle in the planet’s geological history. Why is it important. Knowing better the influence of the planets around us on the climate is good news that helps us better understand our past and be able to glimpse the future with more precision. But it has an impact on the search for habitable exoplanets: it is not enough to find something similar to Earth, but you also have to look at its neighbors and pay attention to the fine print. That is, if it has a “Mars-type” planet nearby but of great mass, its climate has every chance of being too chaotic for life. In Xataka | Mars has just entered the exclusive club of planets with rays. This is discouraging news for NASA. In Xataka | We had been wondering for decades how Mars could have water, cold and life. Today we finally have an answer Cover | Photo of Planet Volumes in Unsplash

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