In Europe, more rent among women always equals less children. A country has managed to change it: Sweden

A while ago Martin Kolk, a demographer from the University of Stockholm, asked an interesting question: does the income level influence the number of children who have men and women throughout their lives? And if so, to what extent? To answer these issues he dedicated himself to combing the fertility and income databases of his country, Sweden, of the last decades. The result He published it In 2022 in Population Studieswhere it reveals a change in tendency in Swedish society that, like Kolk himself stands outcould move to other nations. Your conclusion It is as simple as it is interesting: Sweden seems to have ended The paradox that often the richest people are the least children. Issue of children and money. Having children demand money. Last year Save the Children He made accounts And he concluded that, on average, in Spain he leaves 758 euros per month, if they have as soon as all the factors involved in parenting, from food to education, health or the need for a broader housing. Despite that reality (paternity costs) there are many low -per capita income in which the fertility rate is Very superior to that of other richer nations. For example, it occurs with Niger and the United Kingdom. The other question. Another phenomenon that demographers have observed in the past, such as remember The Institute for Family Studies (IFS), is that in the rich countries women with the highest level of education and labor perspectives have fewer children. “While the theoretical arguments that (…) affirm that the richest parents should be able to have more children, industrial societies of the twentieth century have shown the reverse pattern,” Kolk points out. The United States offers A good example: The highest birth rate is achieved by the poorest families. The big question is … Is that trend still true? Diving between data. To answer that question and others as to what extent the income affects birth or, in reverse, how motherhood in income influences, Martin Kolk opted for a peculiar strategy: took into account the accumulated income by its compatriots throughout its life, analyzing in detail the 40 -year Swedish data and income for each birth cohort. Its analysis covers a wide period that extends to the 1940s, 1950s, 1960s and 1970s, valuing the “accumulated income” in Swedish crowns. The analysis, of course, has its biases. Kolk focused only on the Swedish population, leaving even the people who had emigrated. However, his work is thorough: he analyzes people between the ages of 20 and 60, valued the income that they “accumulate” when they reach 50 years and took into account factors such as available income or aid to fatherhood. Men: richer, more children. In the case of men, he appreciated a fairly clear relationship between accumulated income and fatherhood that has not left great surprises over the years. “The richest men are the ones who have the most children and that pattern has accentuated over time. At higher income, more children,” Comment The Stockholm expert, which even warns: “It is increasingly frequent that men with very low income do not have children.” In his study, Kolk points out that it is not so much that the richest men accumulate a lot of offspring as it is more frequent that they have two, three or four offspring compared to other men with a more adjusted income level. And what about women? It is there where research gets interesting. Among the Kolk women did appreciate a trend change. And of course. While between those born in the 1940s and 1950s, lower income (accumulated income available) was accompanied by more children, which did so over the subsequent years (between 1960 and 1970) showed the opposite photo: the highest income indicated greater offspring. “The trend is reversed: the pattern is more similar to that of men”, Confirm. The full photography is somewhat more complicated. Women with the highest income, for example, are not necessarily those who have the greatest number of children and the trend is not exactly the same if we talk about “accumulated income” or profits. But from the University of Stockholm they appreciate in any case a “significant change” in the fertility pattern of women. And a change that breaks with what was the general tonic for a long time. “The results contrast with those of many other high -income countries in the twentieth and twenty -first centuries, in which researchers have shown that it was more common to have many children among men and women with lower income.” Looking for the causes. Detected the change in trend, the next question is obvious: why? What has caused it? Kolk points to social changes (especially those related to the labor market) and family policies of Sweden. Unlike what could happen decades ago, when many of the women who had children were housewives dedicated to home care, now “women do not have to choose between having children and follow a career.” “What is observed is a transformation of a society where women, to some extent, had to choose between a professional career or have children to a society in which these decisions no longer have to make.” Among the women of the 1940s and 195th, those of lower income were often housewives. It is demography … and above all it is economy. The study shows another valuable reading, especially for countries that have seen how their fertility descended over the years. Research shows that in general people with very low income levels do not usually have children, something extensible to men and women. Also clarify that this pattern “It has accentuated over time”which confirms to what extent the economic factors influence motherhood. “Today, an increasing number of women and men with low income in Sweden decide not to have children,” concludes The expert as an example. “The paradox is left behind”. For IFS Kolk’s research reveals that “at least in Sweden the paradox that the richest people have less children seems to be left behind,” … Read more

You think your flight is managed by an airline, but in reality it sends a silent giant from Linear City: Amadeus

From its central offices in Linear City, to eastern Madrid, Amadeus controls the largest travel reservation system on the planet with an almost suspicious discretion. This technological colossus, which barely sounds in the Spanish daily conversations beyond salmon pages, It is the invisible technological brain of global tourism. When you reserve a flight, a hotel room or a rental car, it is very likely that Amadeus technology intervenes at some point in the process. Its software processes billions of daily transactions According to your own data —Ans consultations, reserves and technical efforts, and connects more than 2,500 airlines and 800,000 hotels with their clients in almost all countries in the world. The 2025 first quarter data confirm your strong position: Benefit of 364 million euros (+12.3%). Revenues of 1,632 million euros (+9.1%). Unseen. The really interesting thing is how Amadeus has built a global model without giving up its European identity: Madrid is still its strategic center. Nice (France) is its ideas laboratory. And Erding (Germany) processing data. In this way he has created a viable alternative to the Californian or Chinese model. And without making too much noise. The contradiction. While the company celebrates the historical results published on Friday, the Stock Exchange He punished his shares with a 5.3%drop. The company has recognized that aerial incidents, weather problems and government developments in the United States have affected its reserves, and has cut its growth forecast due to the impact of the dollar-European exchange rate. In perspective. In times where in Europe Technological sovereignty is increasingly worried – Another question is how in time this concern comes – Amadeus is practically an anomaly. It has shown that it is possible to build critical technology with Spanish DNA and compete worldwide. Growth has been especially strong in Asia-Pacific, where reserves rose 10% and embarked passengers increased by 12%, consolidating this region as its main expansion engine. The next. Its net financial debt is at 1,875 million euros, now equivalent to 0.79 times its ebitda Of the last twelve months, 23.7% less than a year ago. As He has pointed out his CEO, Luis Marotothe company is confident in counteracting current challenges with price increases, collection of new customers and extension of services, while keeping attentive to the global uncertainty environment. The elimination of your debt instead of taking advantage of good inertia to try to grow out of control leaves us another reading between lines: Amadeus, rather than for the next quarter, is preparing for the coming years. Outstanding image | Amadeus In Xataka | The Empire of the PowerBanks of rent everywhere: the Chinese solution that should not take to reach Spain

Nothing has managed to find the key in the mid -range. Its new mobile is very striking, very cheap and includes headphones

When Nothing launched the CMF Phone 1 I knew that I had to be attentive to this sub -woman. Time has proved me, because the CMF Phone 2 Pro It has been released to stores with a very contained price and with an excellent configuration. Can be found in Amazon by 249 euros In its 128 GB version, it includes bluetooth headphones CMF Buds 2 And … a lot of eye with everything it offers. CMF Phone 2 Pro (128 GB) + CMF Buds 2 * Some price may have changed from the last review An excellent mid -range mobile for less than 250 euros He CMF Phone 2 Pro It is a mid -range mobile that stands out mainly in three sections. The first is, unquestionably, the design so striking that in some way Nothing has maintained with respect to the previous generation. And attentive to customization, because You can connect a cardboard, a cord and even interchangeable objectives. It also stands out for your screen. In the mid -range we do not usually find mobile phones that have a similar configuration, since the CMF Phone 2 Pro includes a screen 6.77 inches AMOLED With FullHD+resolution, 120 Hz refresh rate, 3,000 nits peak brightness and compatibility with compatibility with compatibility HDR10+. In addition, it is also worth mentioning that the CMF Phone 2 pro comes with the Essential Key/Spacea space that is enhanced by which we can save both voice or text notes and screenshots. It is accessed by the button that we find on the side of the mobile. You may also interest you Giopuey compatible with CMF Phone 2 Pro, TPU material is ultra -the case (wear resistant) (non -slip) Cover – black * Some price may have changed from the last review * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Images | Ricardo AguilarNothing In Xataka | The best mobiles, we have tried them and here are their analysis In Xataka | The best price quality price. Your analysis and videos are here

JPMorgan has managed to generate really random numbers. The questions are what he needs them for and how he has done it

A classic computer cannot generate Really random numbers. The algorithms used in computer science to produce this type of numbers resort to an initial value usually known as “seed”, so that making mathematical calculations with it is possible Generate one or several pseudo -elementary numbers. In this context it is necessary to use the ‘pseudo’ prefix because the need to resort to that initial value, to that seed, causes the numbers that we obtain Don’t be really random. In fact, when taking the seed we have several options. Some algorithms resort to the system clock, and it is even possible to increase the apparent randomness of the generated numbers sequence using entropy sourcessuch as the mouse movement or the temperature of the CPU in a certain moment. Even so, the numbers that we will obtain will not be really random because it is possible to predict them if we know the seed and the operations that have been carried out to generate them. Quantum computers, rescue For the gigantic American financial conglomerate JPMorgan the random numbers are very important. A priori may seem strange that a bank is interested in the procedures for generating this type of numbers, but, in reality, this capacity lies in the heart of their business. And it is that random numbers are fundamental in cryptography techniques Employees, for example, to transmit encrypted information, work with cryptocurrencies, develop gambling, and, in general, in any process in which it is necessary to have a randomly as possible randomness. To test their plan they executed their algorithm on a quantum computer of 56 cubits with ion traps manufactured by Quantinuum For this reason, in May 2023, several JPMorgan cryptographers wrote an algorithm of random generation generation that was designed to be executed in a quantum computer. Its strategy was to take advantage of the randomness inherent in the behavior of the cubits, whose functioning is governed by The rules of quantum physics, To generate bits whose randomness It could be proven afterwards. To test their plan they executed their algorithm on a quantum computer of 56 cubits with ion traps manufactured by the American company Quantinuum, which belongs to Honeywell. And it worked. They have detailed the result of their experiment in a very interesting article that they have published in Nature. To check if the numbers given by their quantum algorithm are really random JPMorgan researchers worked side by side with scientists from the National Argonne Laboratory, the National Laboratory OAK RIDGE and the University of Texas in Austin. In Your article develop the method they have used to Mathematically demonstrate using super -touches of the US Department of Energy that the numbers delivered by the quantum computer are genuinely random. “It is a revolutionary result (…) the next step requires understanding where we can apply this technology,” Asses Marco Pistoialeader of the project and head of applied research in Global Technology of JPMorgan. Image | Honeywell More information | Nature | Bloomberg In Xataka | Psychantum’s success is not having collected 750 million: it is its groundbreaking quantum chips manufacturing technology

Every time you think about everything the Romans managed to do, remember that they did it intoxicated with lead

Who will not like the Roman Empire? A little over a year ago, thousands of women from all over Spain asked their boyfriends, friends or husbands to How much they thought of the Roman Empire. And, at least according to the meme, the answer was: a lot. What we just discovered hidden in Arctic ice is that, in short, we think too little: the Roman Empire He raised one of the civilizational works more impressive in the history of humanity and did it with absolutely demential atmospheric levels. Lead that they themselves had launched to the atmosphere. Lead, lead everywhere. Examining lead in three Arctic Ice Cores 2,000 years ago, a team of deserting institute researchers They have been able to calculate The level of environmental pollution in Europe between 500 before Christ and 600 after Christ. The data is, to put it in a gentle and restrained way, terrifying. As They publish in Proceedings of the National Academy of ScienceAfter examining the lead isotopes stored on that ice, researchers could create a map of pollution by this metal throughout Europe. Not only that: they estimated their magnitude, the blood lead levels of the inhabitants and even discovered what had caused that enormous pollution. A guilty with name and surname. According to data, silver is at the origin of this problem. Or, rather, the Mining of La Plata. In general and for centuries, the miners melled tons of galena To extract silver. It is estimated that by each ounce of useful silver thousands of ounces of lead to the environment were released. To put it in numbers: “During the 200 years of apogee of the Roman Empire, more than 500 kilotons of lead to the atmosphere were released.” This, always according to the records of the ice centers, is 40 times greater than during the large environmental lead peak of the 70s (after which we began to withdraw it from gasoline, paintings and the rest of the products). And that, of course, there were consequences. We already know that lead is bad for health. Very bad. And not only because of infertility, illness or violence problems: I talk about neurological problems that translate into a considerable decrease in cognitive abilities and concentration. In practical terms, According to DRI researcherslead levels in Roman times had to decrease between 2 and 3 points of intellectual coefficient in the general population. “It does not seem much, but when it applies to practically the entire European population, it is a big problem,” Nathan Chellman explainedCo -author of the study. A problem that, seen in perspective, only increases the myth of the Roman Empire. Image | Joseph McConnell | Ilona Frey In Xataka | The Google Maps of the Roman Empire: the map that allows you to plan a route at that time

Sweden has managed to be 100% recyclable and turn its waste into energy. Spain follows it closely

More than 190 million tons annuls of urban waste are generated in Europe, according to The European Waste Association. This amount of garbage has increased greenhouse gas emissions, contributing to climate change. However, to deal with recycling is not enough, but some countries have found a way to generate energy. 100% recycled. One of those countries and precursor has been Sweden, which They have found In the incineration of waste an energy source, providing heating and electricity to 250,000 homes. Energy source. The data, provided by the Swedish state company VattenfallThey have indicated that only 1% of the trash ends in landfills; The rest becomes energy through the use of biomethane. Thanks to this energy source they can generate heating, electricity and even can be used as fuel for cars. In addition, the Swedish nation is importing the waste from other European countries to produce more energy. The process. Waste management in Sweden It is done In plants Waste-to-Energy (WTE). Once there they are divided into three categories. The first is the organic garbage that is transformed into biogas, compost and fertilizers. Then the plastics that end up recycling. Finally, all non -recyclable waste is incinerated at temperatures up to 850 ° C to generate electricity and heating. And in Spain? A recent report, which has had access Infobaesaid that the Spanish nation will not meet the waste management objectives established by 2025. In it they have stressed that the waste sector is responsible for 5% of greenhouse gas emissions. But are they taking action? The central government has proposed to implement A packaging system, in which citizens will receive a refund for recycling containers. For its part, the Valencian Community will reuse The waste and mud that left the Dana, and is studying the possibility of incinerating them to generate electricity. But there was not an ace under the sleeve … Spain has A great potential To develop the biomethane industry, a renewable gas similar to natural gas that can be stored and injected into the current network. However, as indicated Cecilia Carballo for Fifodiesthe country is behind other European countries in terms of facilities. However, there is a glimpse of hope if appropriate support is given, Spain could take advantage of its ability to produce up to 160 twh per year, which would cover 50% of the national natural gas demand. For this, a robust regulatory framework and policies that foster their development are necessary. Image | Flickr and Norbert Nagel Xataka | A strange source of energy is putting the unity of Europe in energy matters: manure

Austin has managed to lower the price of housing in full world crisis. One of your keys: build a lot

It doesn’t matter if it is the US, Europe or Asia. Where there is a tensioning real estate market, with upward prices and families forced to spend more than advisable In your rent or mortgages the question is always the same: how to lower prices or at least moderate them? Is there a formula that allows cutting the ascending spiral of €/m2? In Austin, Texas, they have succeeded. And to a large extent the key has been a clear commitment to the construction of new housing. The full photo, yes, is much more complicated. What do the figures say? That Austin, capital of Texas, the Tenth city With more US population, it has managed to reduce the cost of their home. It arrives with checking some sources to check. According to UNLOCKS MLS, in January the average sale price in Austin’s metropolitan area was 4.7% lower a year ago while the national trend at the close of 2024 was the opposite, with a price increase 6%. Redfin also confirms an interannual decrease 3.1%in the price of the square meter (m2). News Week It has echoed some luxury residences of the city that have strongly reduced their prices. In August He spoke of an average drop of 7.23% in the prices of the new constructions, with some properties reduced to 31.33%. In January he cited a mansion that had reduced its price 50% And in February he cited a similar case with a decrease 30%. Why is it important? In general, experts who analyze the Austin real estate market speak, if not drop in prices, yes at least of “stability”. What is not bad if two factors are taken into account. First, what The latest data From the Federal Financing Agency (FHFA) show the cost of the house has risen on average in the US, with a 4.5% rise between the fourth quarter of 2023 and the same period of 2023. The second key is that the last falls connect with those already registered in recent months. Just a year ago Wall Street Journal (WSJ) He informed That, if compared to the maximum values ​​reached in 2022, prices had fallen in Austin more than 11%. No other US metropolitan area has seen the house more cheaper during those years. As for the rental cost, the newspaper pointed to a 7% drop in just one year, again a record fact on the US urban map. Today it is estimated that they are already lower 22% to those of August 2023. Is there more data? Yes. Months later, at the beginning of autumn, Business Insider He put the thermometer again to the capital of the capital of Texas and found that housing prices had fallen even more clear with respect to 2022 peaks. At that time the Freddie Mac company placed the drop by 14% and Zillow in 18%. It may sound like a catastrophe for the real estate market, but the truth is that, despite these falls, the prices of houses and apartments in Austin were maintained above the levels prior to the pandemic. A year ago Moody´s calculated that were still 35% higher than what would be expected by the local economy and the most recent analyzes of Redfin either NORADA They corroborate that today the M2 in the Texan capital is still more expensive than in 2019. And what is the cause? Better talk about causes, in the plural. If Austin has managed to cut the price escalation of his real estate market and that the houses and apartments are cheaper is thanks to a sum of factors in which the commitment to new promotions is combined, the overconstructionthe increase in mortgage loans and the demographic dynamics of the city. To understand it, it is necessary to go back a few years ago, to A very different scenario in which prices grew at a good pace. What period do we go? To the last decade and the years prior to the pandemic, when the promoters and buyers of Austin faced a very different panorama: an escalation of prices that, according to Some estimatesled to the average cost of an house in the metropolitan area increased by 63% in a decade, from 2010 to 2020. WSJ It goes further And it points to an increase of 60% in just a couple of years, just during the pandemic, far exceeding the increase in income. These percentages are explained above all for one reason: the imbalance between supply (scarce) and demand (high). After the financial crisis of 2008, housing construction had been placed while the Austin area stood out at the national level for the growth of its population: 33% in a matter of a decade. Only between 2020 and 2022 his census office scored A 5.3% rise. The reason for that boom? Among others and dynamics of the pandemic apart, the commitment of companies such as Oracle, Tesla or Elon Musk himself and Your interest For the Texan State. That there were large companies making the bags to move to Austin was no accident. Beyond its environment, it was attractive at the regulatory and tax level. The problem is that this growth further brushed the real estate market, making prices fire. And how did the city answer? Building. A lot. Lot. And fast. Texas It usually presumes From its construction sector and in Austin it took muscle. Animated by demand, upward prices and changes at the regulatory level That they made the promoters easier, the Texan capital saw how its market entered into boil. It arrives with review some data to understand it. Only between 2020 and 2022 plans for tens of thousands of new homes of all kinds. Business Insider Remember that if in 2022 more than 3,000 new properties each month came to the market, the following year the figure already exceeds 5,000. It is estimated that Austin’s housing park gave a stretch of More than 8% In a few years, including both single -family houses and apartment and … Read more

For the first time, a private company has managed to reach the moon successfully. And it has been after resurgence from bankruptcy

The early morning of March 2, the Blue Ghost ship of Firefly Aerospace fell gently on the lunar surface. It was the First time in history that a private company achieved a completely successful moon landing: in vertical and with the solar panels well -oriented to survive the 14 days that a lunar day lasts. Blue Ghost nailed the moon landing. Preceded by the failures of the Beresheet ships (From the Israeli company Spaceil), Hakuto-R (of the Japanese ispace), Pilgrim (of the American astrobotic) and Odysseus (also American intuitive machines), Blue Ghost landed in a stable position after a descent maneuver designed to dodge rocks and dangerous geographical accidents. The lunar module touched soil in the Mare Crisium region, near the volcanic formation of Mons Latreille. The instruments and sensors on board reported that Blue Ghost was at an optimal angle, and the first images of the shadow projected by the Firefly Aerospace ship showed that it had perched on the lunar surface vertically. A respite for NASA. The historical achievement of the Texana company is also an achievement for NASA, which breathes quiet after the first round of the CLPS program (Commercial Lunar Payload Services), designed to send regular missions to the Moon in commercial ships. Intuitive machines I could achieve the second in a couple of dayswhen its new Nova-C module athens tries to alunize in the South Lunar Pole after Nova-C Odysseus overturns in February 2024. The Ghost Riders. On board the Blue Ghost module of Firefly there is a series of instruments, experiments and technological demonstrators, mainly from NASA, that will drill the soil to collect samples, investigate how the dust rises to mitigate the problems they represent in future lunar missions, and measure the level of radiation and the magnetic activity in the environment. Blue Ghost will display and operate these loads for 14 terrestrial days, equivalent to a lunar day, before the lack of sunlight and the very low temperatures compromise their batteries. An eclipse of earth. Blue Ghost has already given us overwhelming images of the Dawn on the moon or the Planet Earth in the firmament. “We are all in that image,” Firefly engineers recalled during the press conference. But the best will come in the last days of mission. Among the planned mission milestones are the capture in high definition of a total eclipse on March 14, when the earth blocks the sun from the perspective of the ship on the moon, as well as a recording of the lunar twilight on March 16 in which we will see the lunar dust levitating. The Renaissance of Firefly Aerospace. The Firefly feat is especially remarkable taking into account the recent history of the company, marked by a bankruptcy, an internal scandal and a sound change in property. Firefly was saved by the Ukrainian inverter Max Polykovwho invested around 200 million dollars and resurrected the company. However, Polykov was forced by the United States government to sell its majority participation in 2022 for a symbolic price of 1 dollar. And all for geopolitical reasons. Since then, Firefly was under the majority control of the private capital firm AE Industrial Partners. His current CEO is Jason Kim, who assumed the company’s management in October 2024 after his predecessor, Bill Weber, retired from An alleged inappropriate relationship With an employee. Image | Firefly Aerospace In Xataka | In 2011, a collector bought in Morocco a meteorite. It has turned out to be a direct test of thermal water on Mars

This is how they managed to endure the cold

Let’s start at the beginning: although it may seem like perogrullo, In the Middle Ages it was cold. It was cold, but not so much. At least, in Europe, there was a warm period (the “Climate optimal“) that systematically relieved the living conditions of the Europeans of the time. But around 1300 the thing changed radically: the Small Middle Ages He had started. Was A disaster. And not only because of the cold, epidemics and the loss of entire crops, it was that European peoples did not have the necessary technology to warm themselves at home without putting their lives at risk. No radiators, without chimneys, without crystals in the windows … the houses of the continent became unhealthy mousetracks full of associated risks. And how did they warm up? That is the question that The history and disseminator professor Nuisia RARRIDI is made. After all, no matter how cold the temperatures of western Europe did at that time they had to be terrible. AND, As Raridi says“The houses were permanently crossed by air currents.” We talk about a time when we had to “choose between leaving the light and the cold or neither.” There weren’t windows? There were, of course. They were small and normally had no crystals. As Raredi explainedthe glass for the windows “appeared in the cathedrals around the 10th century.” Before that (and later), it was common relativamene to see churches that used basalt to try to solve the problem of light. Because the glass problem is that it was expensive. In fact, it was not until after 1300 (when the techniques had improved and the cold began to accentuate) when they began to be used in private homes – especially in accommodated houses. And the issue of fire? How were there no chimneys? According to the documentation that He has collected RARRIDI“The chimneys, as we understand today, did not develop before the thirteenth century.” Until that time, as we can see in many places on the planet, the families lit fires in the center of the house and, consequently, the smoke filled the entire room (and went out where it could). As if that were not enough: the homes were very badly isolated. “The medieval houses were often made of wood and were poorly isolated”, which meant “a real problem in the coldest months.” Hence the tapestries, carpets and canopy beds were popular (which, “were extremely practical: the curtains that surround them served to retain heat and protect themselves from cold”). It doesn’t hurt to remember that for centuries, Europeans slept within cabinets and the explanation to her is this same. Cold, heat and vice versa. Despite what Paleoclimatic discussion has become popular for the debates of Climate changeright now we don’t have much to learn about medieval techniques to pass the cold. However, knowing what we were, always helps expand the imagination about how the human being can live. Image | Krzysztof Kowalik In Xataka | The Middle Ages was not as dark as they told us

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