May the world depend on your new energy

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Representatives of eight Western venture capital firms have traveled to China and realized one thing: the West can’t compete in new energy. This phrase could be a ‘clickbaitero’ headline, but it is the experience that representatives of several companies told a few weeks ago to Bloomberg. And the truth is that it is nothing new either. China has been consolidating a extraordinary domain in multiple clean energy sectors. It is something supported by industrial supremacy and significantly lower costs than those of its Western competitors, which has been evidently reflected in sectors such as electric car batteries or in sectors such as solar or wind energy. In the Bloomberg article, some of the components of that peculiar Western ‘road trip’ through China wonder How European and North American competitors can compete (or survive) in sectors such as batteries and components of renewable energy sources. The reason? The figures leave no room for doubt: China dominates batteriesthe wind turbinesthe solar panels, the electric vehicles and something even more important: the production chain and critical materials. New energy mastery Not so long ago, China had a massive problem within its borders: pollution that seriously harmed the health of its population. By adopting different measures, they have managed to reduce it significantly, achieving decarbonization objectives before the established dates. And much of the ‘blame’ is adoption of electric vehicles and energy sources that emit less CO₂ into the atmosphere. It is not unusual to see news every so often about the progress of some of China’s macro energy projects, such as the ‘great solar wall‘, huge wind turbines or the construction of the new largest dam in the world which, in addition, will be a gigantic hydroelectric plant. Such is the commitment to renewables that China has managed to the world depends on its technologywith Europe and the United States that cannot compete in the price of solar panels and with a so fierce competition between your companies that They have even had to sign agreements not to continue selling at a loss. Since we are with solar, esteem that China reached 887 GW of solar capacity in 2024, installing about 270 GW in that year alone. This represents 55% of all new solar installations in the world last year, but they are not only dominating this segment. The percentages leave no room for doubt: China controls between 80% and 85% of the world’s solar panel manufacturing capacity and more than 95% of solar wafers. In wind turbines, they count with 60-70% dominance of global production and nine of the fifteen largest global manufacturers they are chinese. As for electric vehicles, they have control of 70% of global production. In 2024, they manufactured 12 million of the 17 million EVs in the world, and of their production, 11 were sold in the domestic market. Related to the three previous points, we have the manufacture of batteries. It is estimated that they control between 75% and 80% of the production of lithium-ion batteries and these are used to store new energy, but also for electric and hybrid vehicles. The only technology where things are more even between China and the West is hydrogen. It is estimated that China dominates 53% of its production, while Europe (30%) and the United States (12%) would add 42%. Mastery of the production chain (and a model that cannot be replicated in the West) This dominance in production is evident, but beyond the data in the different sectors, there is another key that explains the power of Chinese companies. The country controls the rare earth productionalmost monopolistic way. The world depends on minerals and metals processed from rare earths, as they are critical in all technological sectors, but particularly in batteries and elements such as magnets that are used to create wind turbines. Without going any further, The country processes 80% of the world’s lithium and produce 90% of the anodes and electrolytes present in batteries. For years, The West has delegated that production to China due to how polluting they are, but now Western companies have come face to face with a reality in which China has the upper hand. The United States has realized this: if they applied tariffs, China limited exports of rare earth metals. Speaking of the United States, former Vice President Al Gore affirms that China’s supremacy in the energy transition will force many nations to establish closer ties with the country, describing, incidentally, the United States’ energy shift towards fossil fuels as “a tragedy.” And to this control of the production chain is added the so-called “model 996“. This system emerged in the chinese technology industryparticularly in companies like Huawei or Alibaba, and basically implies: I work from 9 to 9 six days a week. Considered a form of modern slavery, companies justified and defended as the method of matching Western technology companies in record time, but the mental health cost (and even suicides) was so enormous that the Chinese Ministry of Human Resources declared it illegal in 2021. Companies are required to comply with the law, but it has been denounced that there are still technology companies that continue with these practicesand added to all the above, it is something that the West cannot compete with. Unless you are a Silicon Valley company. Image | Google Maps, BYD In Xataka | While half the world debates and makes promises about nuclear energy, only one country is keeping them: China

Hidden for 43 years, this Mercedes-Benz 500 SL is the closest thing to a toy preserved in its packaging: it still smells new

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Who They collect toys and dolls They know that preserving a piece in its original case for decades is a precious achievement, a symbol of care and respect for the history of the object that also increases substantially its value. Now, imagine that same experience, but with a car. It is something much more difficult to achieve because, if only to give yourself the pleasure of drive it from time to timeand compensate the money that has been paid for it, it is easy and understandable for the vehicle owner to fall into temptation. However, that is precisely what SL Shop, a workshop specialized in repair and restoration of Mercedes-Benz and They tell it on their blog. The most surprising thing – and what makes this find so unusual – is that the owner’s intention was never to drive it, but rather to preserve it intact as it left the factory and without the slightest wear. If cars were sold in a blister pack like toys, this would be the equivalent. The dream piece for any collector It is common for a legendary car stored in a barn to appear from time to time. under decades of dust and rust. However, this Mercedes-Benz 500 SL R107 from 1982 has been discovered after 43 years carefully stored in a private garage in the United Kingdom, with just 68 kilometers on the odometer and in an absolutely pristine state of conservation. It has only traveled the 42 miles that were done on it at the factory and at the dealership before delivery. It is a true time capsule on wheels, which seems to have just rolled off the assembly line a few days ago. Sam Bailey, founder of The SL Shop, a classic Mercedes specialist who took delivery of the vehicle, said: “This 500 SL is the truest reflection of the original R107 plans.” In fact, as he himself acknowledges in a video they have uploaded to his YouTube channel, the car It even keeps the smell of new. “You could almost bottle it. It’s just heaven,” Bailey said. This example was purchased with all the original extras available on November 30, 1982 by a local watchmaker, who decided never to register this Mercedes-Benz 500 SL. In fact, even the delivery of the vehicle it was done in a truckso it didn’t even travel the distance between the dealership and the owner’s home. Since then, the 500 SL has been in storage under controlled temperature and humidity conditionsavoiding any deterioration. The Blue Green Metallic paint remains intact and rust-free, and the original dealer stickers are still attached, something very rare to find on collector cars. The car shows amazing conservation details: Waxoyl protective wax still covers the engine and exhaust, while the Michelin XWX tires remain. without having traveled even a kilometer. The interior preserves the leather, the original woods and even the authentic smell of the 80s. Among the factory options it has air conditioning, heated seats, ABS and metallic paint, valued in 1982 at more than 2,746 euros. The car has all its original elements and is in an impeccable state of conservation except for one detail. The Mercedes-Benz badge on the hood is not the original: it is a faithful reproduction that was made by the owner in solid silver. It was put up for sale: it will never be sold As Bailey tells it, he learned of the existence of this gem more than fifteen years ago, when during an exhibition, its owner approached them to tell them the story of his little automobile treasure. When Bailey asked if he would be willing to sell it, the owner responded with a firm no. But life takes many turns. In August 2025, Bailey received a call from the owner of the 500 SL offering it for sale. Knowing its history, the businessman has decided to buy it and He has promised to never sell it. To maintain the legacy of its first owner, the 500 SL will remain in an exhibition space open to the public and air-conditioned for conservation, where it will serve as a reference for future restorations. After all, there is no other car like this outside the Mercedes-Benz Museum in Stuttgart. That makes it a collector’s piece with incalculable value. The Mercedes-Benz 500 SL R107 was at the time the pinnacle of luxury and power German, with a 5.0-liter V8 engine that delivered 240 horsepower and a four-speed automatic transmission. Its design, technology and comfort rivaled sports cars from brands such as Ferrari and Maserati, but with an outstanding reputation. for its reliability. This model is recognized as a symbol of German engineering from the early 80s, capable of combining performance, elegance and durability, values ​​that are evident in this unique example, practically new after more than four decades hidden so that four decades later, whoever has the privilege of being able to sit inside, can smell the new smell of the first day. In Xataka | One of the largest collections of cars in the world has an unlikely origin: the shift system of fishmongers Image | SL Shop

Five top offers from El Corte Inglés during the Super Tecnoprecios, today October 25

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Until tomorrow, October 26, El Corte Inglés has active Super Technopricesa campaign in which, as usual, we can find offers on many technological devices. That is why in this article we are going to review, focusing on deals on cell phones, computers, televisions and more. Motorola G15 by 152.10 eurosa cheap mobile that comes with 512 GB of internal storage. Sony WH-1000XM4 by 183.20 eurostop Bluetooth headphones that have very good active noise cancellation. Samsung Galaxy Z Fold7 by 1,687.20 eurosthe brand’s latest folding mobile phone has finally dropped in price. HP OmniBook X Flip 14 by 899 eurosa convertible computer with 1 TBB of internal storage. TCL 55P6K by 303.20 eurosa TV with Google TV that is quite economical. Motorola G15 Just because a cell phone is cheap doesn’t mean it necessarily has to have bad specifications. He Motorola G15for example, is currently on sale at El Corte Inglés for 152.10 euros and stands out mainly because it comes with 512GB of internal storage, but it also has a 6.72-inch screen with Full HD+ resolution, speakers compatible with Dolby Atmos and 3.5 mm Jack port. The price could vary. We earn commission from these links Sony WH-1000XM4 Although they were launched a few years ago, the Sony WH-1000XM4 They are still very good Bluetooth headphones. By 183.20 eurosthere are not too many alternatives that can cope with it, since they are very comfortable, have a very good construction, they sound outrageous and offer excellent active noise cancellation. In addition, they also offer a good autonomy of up to 30 hours. The price could vary. We earn commission from these links Samsung Galaxy Z Fold7 It is still expensive, but the Samsung Galaxy Z Fold7 You have finally received a great discount at El Corte Inglés. By 1,687.20 euroswe talk about Thinnest and lightest Fold to date which is accompanied by a 6.5-inch external screen and an 8-inch folding internal one. The processor is the Snapdragon 8 Elite for Galaxy and it has 256 GB of internal storage. Samsung Galaxy Z Fold7 (256GB) The price could vary. We earn commission from these links HP OmniBook X Flip 14 Also at El Corte Inglés we can find many offers on laptops, and the HP OmniBook X Flip 14 has fallen to 899 euros. It is a convertible with a 14-inch touch screen that offers a 2K resolution. It weighs only 1.38 kg, its processor is the Intel Core Ultra 5 226V, it comes with 16 GB of RAM and 1 TB of SSD and it has Windows 11 Home pre-installed. HP OmniBook X Flip 14 (fm0002ns) The price could vary. We earn commission from these links TCL 55P6K Of course, at El Corte Inglés there are also many offers on televisions, and if we are looking for something economical the model TCL 55P6K has dropped to 303.20 euros. It is a smart TV that comes with a 55-inch screen that offers compatibility with HDR10. Your operating system is Google TV and is compatible with Google Assistant. The price could vary. We earn commission from these links Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Images | El Corte Inglés and Compradicción (header), Motorola, Sony, Samsung, HP, TCL In Xataka | The best mobile phones (2025), we have tested them and here are their analyzes In Xataka | Best televisions in quality price. Which one to buy and seven recommended 4K smart TVs

why that bright red is pure marketing

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You are in front of the counter. On the left, a bright red, almost advertisement-like steak that screams “eat me, I’m fresh!” On the right, a piece of a duller tone, perhaps a little darker, but streaked with fine white lines. Which one do you choose? Most we launch ourselves into the vibrant red. It’s a reflex action. Although he is not always the smartest. It is something recognized by those who are in contact with this product all day, such as butchers. One of the examples is Mariano Sánchez who told La Vanguardia recognized that customers can pay a lot of attention to the color of the product, but he points out that the real key is in the fat of the fillet. This makes us have an almost obligatory question: is this a simple shopkeeper’s trick or does it have a real scientific basis? The short answer: you are absolutely right. They have been deceiving you, and a protein and a little oxygen are to blame. The myth of bright red. What we associate with “fresh meat” is nothing more than a superficial chemical reaction. The color of meat is determined by a protein called myoglobin.which stores oxygen in the muscle. In this way, when the meat is freshly cut or vacuum packed, the myoglobin is in its natural state (deoxymoglobin) and has a fairly dark purple-red color. And this is not something bad or something that should be despised. But when meat reacts with oxygen in the airthe myoglobin reacts and becomes oxymyoglobin. This compound has the bright cherry red color that attracts us so much. It is literally the ‘blooming’ that occurs on the surface. In short: the color bright red it only indicates that the meat has been in contact with airnot that it is of better quality, more tender or tastier. In fact, a vacuum-packed meat (purple in color) can be much fresher and less oxidized than the one glistening on the tray. The key is fat. This is where the butcher was completely right. What really defines the sensory experience of a good steak is not the color, but intramuscular fatpopularly known as “marbling” or “veining”. We talk about those fine streaks of white fat that infiltrate into the musclenot from the large layer of fat that surrounds it (which is also important to protect the piece, but that’s another story). And fat is responsible for the three most important virtues that we look for in a meat product. The first of them is the flavorsince fat is the vehicle for aromatic compounds, and during cooking this fat melts and releases these molecules, flooding the meat with flavor. A lean meat (without fat) It is, by definition, a meat with less flavor. Juiciness is the most obvious factor related to fat. As it melts, the intramuscular fat “waters” the steak from within, lubricating the muscle fibers and helping to retain water. It’s what makes the difference between a tender bite and a dry piece of cork. Studies on the sensory acceptability of beef show a direct and positive correlation: the more marbling, the higher consumer scores for flavor, juiciness and general acceptance. How to buy meat. So, the next time you go to a butcher shop, you don’t have to look at different points to have the best possible culinary and gustatory result. As summary points we can have the following checklist: Look for marbling: it is the number one quality indicator of a piece of meat. You should always look for pieces with a fine, well-distributed network of white fat veins. Color of fat: Intramuscular fat should be pearly white or, at most, slightly yellowish (something that indicates a step-based diet). What you have to avoid is pink, gray or reddish fats. The texture: a meat should have a firm, dense appearance and a dry surface (or slightly moist, but never sticky). If the mark disappears quickly when you press it with your finger, it is a good sign of freshness. If it is slimy or soft, that is a bad sign. Don’t focus on the color. When you see a piece with a dark, almost maroon color, you should not discard it immediately. This often indicates that it is an older animal or that it has gone through a dry-aging process. In these processes, the meat loses moisture and its own enzymes break down the fibers and increase the tenderness. In short, the color in the end, although it is the letter of presentation of a piece of meat, the reality is that it is not the only factor that directly influences the quality of the product that we are going to put in our mouths. Images | Sergey Kotenev In Xataka | Chicken meat printed in 3D and cooked with lasers: this is how these researchers see the future of meat

The countries with the most kilometers of high-speed train, displayed in a graph with a brutal dominator: China

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The train is the backbone of many countries. For centuries it has been key to mobility in Europe, in Japan it is essential, China has experienced a railway revolution and even the United States or Latin America begin to bet on passenger mobility by train. However, it is one thing to have a railway and quite another to have a rich high-speed network. And this graph shows the countries with the most kilometers of high-speed trains and their plans for the future. China, undisputed queen. The Olympics They are an event in which countries “sell” themselves to the worldbut in the case of China, it involved a profound renovation of its infrastructure. It was in 2008 when China launched its high-speed railway line: barely 120 kilometers between Beijing and Taijin, and 17 years later, it is the country with the most kilometers of high-speed lines in operation. According to the data of World Population Review and as we can see in the graph prepared by Visual CapitalistChina has more than 40,000 kilometers of tracks on which its trains go at 250 km/h or more. They have another 12,800 kilometers under construction and more than 11,000 planned. In total, some 64,000 kilometers of high-speed rail. In addition, they are moving forward to make their network the highest speed thanks to the maglev advancesmagnetic trains, with tracks that already link cities like Beijing and Shanghai to speeds of more than 430 kilometers per hour. And it is this network that is putting the airlines in check. Spain and Japan. The train is vital in a country as huge as China and the numbers speak for themselves, but there are two other countries that, without being the ones with the most kilometers in total (operational, under construction and planned), complete the podium of those with the most high-speed kilometers currently operating. There are no surprises here. Spain has a total of 5,632 kilometers of high speed, of which more than 3,700 are already operational, followed by China the country with the most kilometers of high speed currently holds. There are another 1,040 kilometers under construction and another 862 kilometers planned. For its part, Japan, another example when we talk about fast trainshas a total of 3,700 kilometers divided into 3,050 operational kilometers, 402 under construction and 193 planned. Promises, promises. At a time when the train is emerging as the alternative to international flights, especially to low cost and among short-distance points, it is striking that, in reality, there are no more countries with high-speed lines. In Europe, apart from Spain, France, Germany, Sweden, Finland or Italy, they have hundreds of operational kilometers, but outside of the ‘Old Continent’ and cases like South Korea, things are very different. For example, India. It is the second country in the graph, but of the 8,000 total kilometers, only 508 eare under construction and the remaining 7,400 are planned. They do not have high speed, and the same thing happens in Egypt (with 3,400 kilometers planned), Australia (1,700 planned) and European countries such as Latvia, Estonia, Norway or the Czech Republic: all with plans to create high-speed lines, but not one operational kilometer. America. And if in China the train is essential due to its dimensionson the American continent we should think that things are the same. And no, not at all. The United States, a gigantic country, has only 735 kilometers of high speed, 273 under construction and almost 5,000 planned, but nothing more. Spain tried to bring the AVE to the North American country and there are demands for high-speed trains to expand, but their internal mobility continues to have the plane as the protagonist. Canada has 1,500 kilometers planned and not one kilometer built, Mexico is in the same situation with 210 kilometers on the table, Brazil the same with 510 kilometers planned and Argentina does not even appear on the graph. But, although high speed is complicated on the continent, the truth is that there are many plans to expand the railway network, even creating international trains that go from one ocean to another, like the one planned between Brazil and Peru. And who is behind many of these projects? Well, who has gained experience at a forced pace in recent years ‘pulling’ thousands of kilometers of tracks: China. In Xataka | China wanted to be the queen of high-speed trains. So he built all the longest bridges in the world

more than 1,200 exotic species are here to stay

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The Iberian Peninsula is being invaded and not by a war between humans, but for 1,200 non-native species that have settled on our land. A phenomenon that represents a great threat to native fauna and flora and that now requires international cooperation to protect ecosystems and especially the animals and plants that are native to our peninsula. The study. According to a study published in Diversity and Distributions, the number of exotic species established on the peninsula now exceeds 1,200, including plants, insects, mollusks, crustaceans and vertebrates introduced intentionally or by accident. The protagonists in this case are Spain, Portugal and Andorra, which are the first affected by this silent invasion. The team, led by Ismael Soto and with participation, has documented 1,273 species that currently maintain themselves independently by feeding and reproducing. The data. In the results of the research it has been seen that at first it has been seen that the species that are invading us come mainly from the Palearctic region (Europe, temperate Asia and northern Africa) followed by the American species. But not everything is animals, as you might think, but 75% of the invaders correspond to vascular plants and insects. Although the big question here is: how did they get in here? The answer lies in the gardens and nurseries that, together with mechanisms linked to international transportation, participate with ornamental plant trade that are not original to the peninsula. Where. This is not something that is similar throughout the geography of the peninsula. Mainly, exotic species are concentrated in coastal areas and large cities, and that is why we see a large number of these in Andalusia, Catalonia or the Valencian Community. Something that is also related to the number of ports that exist as they are a great gateway for international trade in these invasive species. What damage do they cause? When the species arrive on the peninsula, they have a detrimental effect on our ecosystem, and that is why they generate so much alarm around them. Among the effects we find are: Ecosystem modification which can cause the local extermination of native species. Transmission of diseases to natural habitats that change their structure. Alteration of food webs and displacement of native species due to direct competition. For example, we can find a predatory species that ends up with a native species as its ideal prey. Examples. There are some species that are undoubtedly perfect examples of this. One of them is the american red crab (Procambarus clarkii) that was introduced into our habitat in 1973 and that today is responsible for great ecological damage, since it has caused the disappearance of native aquatic species, which also triggers socioeconomic problems. Another case is the bullhead (Silurus glanis), whose voracity and expansion as a fishing trophy have made it the dominant predator in several rivers and reservoirs, threatening the survival of other aquatic species.​ The ants. Although they seem to be going their own way, the reality is that exotic ants like Argentina (Linepithema humile) It has expanded through cities and coasts, causing large effects on ecosystems and generating high control costs. Floors. Most of the invasive species we have in this case are not animals, but plants. One of the classic examples is the fern Azolla filiculoides what is capable of consuming all the oxygen in the water and suffocate the native aquatic species that will use this oxygen. Another example is the water hyacinth which It is among the 100 most invasive species in the world for its impact on lagoons and aquatic ecosystems. What can be done? The prevention and control of exotic species requires continuous monitoring, restoration of degraded habitats and effective policies based on science and citizen participation. Sectors such as aquaculture, recreational fishing, the pet trade and horticulture are critical points where preventive measures can make a difference. The authors insist on the urgency of strengthening international collaboration and applying shared strategies between the scientific community, environmental managers and civil society. Only in this way will it be possible to face one of the greatest threats to Iberian biodiversity, protect endemic species and maintain ecological balance in this hot spot of European biodiversity. Images | Joshua Ralph Ivan Bandura In Xataka | England is experiencing an unprecedented invasion. The problem is that they are octopuses, and they are devouring everything they can find.​

which cars can circulate and which rest on October 25

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Saturday, October 25, is presented as a day that, in theory, invites relaxation and free time. However, for those who have vehicles subject to the Hoy No Circula Sabatino program, the reality will be different. As you already know, some cars must remain parked at their homes throughout the day. This measure, promoted by the CDMX Environment Secretariat (SEDEMA), its primary objective is to reduce air pollution so that we breathe better quality air. Its logic is direct: the circulation of certain vehicles is prevented, mainly those with higher levels of polluting emissions. However, the restriction does not always affect the same cars each weekend. In the areas where this program operates, some of these vehicles alternate their rest between different Saturdays. In which territories does this regulation apply? Specifically in the 16 municipalities of the Mexican capital and in these municipalities of the metropolitan area of ​​the State of Mexico: • Atizapan of Zaragoza • Coacalco de Berriozábal • Cuautitlan • Cuautitlán Izcalli • Chalco • Chicoloapan • Chimalhuacan • Ecatepec de Morelos • Huixquilucan • Ixtapaluca • Peace • Naucalpan de Juárez • Nezahualcoyotl • Nicolas Romero • Tecámac • Tlalnepantla de Baz • Tultitlan • Chalco Valley What cars and license plates does Hoy No Circula Saturday affect? What vehicles should stay home? The daily mechanics of this program are quite clear to understand, as you can see in the infographic above. However, on Saturdays the dynamics change and not all cars face identical restrictions each weekend. Some vehicles can move freely on certain Saturdays, while on others they are restricted. The classifications for this day are grouped into: • Vehicles with circulation permit every Saturday • Vehicles with permanent restriction every Saturday • Vehicles with alternating restriction every other Saturday These restrictions operate only in the time range from 05:00 to 22:00. During the night the prohibition ceases, allowing circulation without risk of fines. In addition to understanding the basic concepts, it is worth noting that the application of the program varies depending on the type of car. For this reason, it is essential to verify three aspects before starting the engine: the monthly calendar, the type of hologram that the car has and the last number of its license plate. As an example, vehicles with hologram 2 cannot circulate on any Saturday, while those with holograms 0 and 00 circulate freely every week. Those with hologram 1 They face restrictions that rotate week by week. On Saturday, October 25, 2025, which corresponds to the first Saturday of the (odd) month, vehicles whose license plates end in an odd digit must remain parked. Next Saturday, the second of September (even), the restriction will apply to vehicles with license plates that end in an even digit. However, there are certain exceptions that are worth taking into account because these vehicles will be able to circulate without restrictions: • Electric, natural gas or hybrid technology vehicles • Vehicles that have a disability plate • Units intended for urban public transport (including funeral services) • School transport or passenger vehicles • Public security and civil protection units Failure to comply with these regulations entails fines equivalent to 20 or 30 times the Measurement and Update Unit (UMA), which means an economic penalty of between 1,924.40 and 2,886.60 pesos. Photo | Josh Sorenson In Xataka | Pollution is not only making you live less and worse. It’s also making you dumber

In China they have created a material for their fighters that opens a new technological direction: it aims directly at radars

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From the early days of World War II to the stealth fighters of the 21st century, the goal of remaining unnoticed by the enemy has been a constant obsession in military aviation. Aerial “invisibility”, more than a myth, It is a technological challenge that has marked decades of innovation in materials and design. A team from Chinese universities describes a flexible and ultra-thin coating capable of absorbing radar waves without losing thermal resistance, collects SCMP. If its effectiveness is confirmed in flight, it could change the conversation about modern aerial stealth. The development was detailed on October 14 in Advanced Materials. The study, signed by Cui Guang, Liu ZhongfanHuihui Wang and Maoyuan Li, among others, presents a graphene-on-silica-fabric (G@SF) metasurface that combines flexibility, low weight and thermal resistance of up to 1,000 degrees Celsius. According to its authors, the direct integration of the material into the insulating layer of an aircraft would allow the reflected radar signal to be reduced to −42 dB, without compromising the structure or weight of the aircraft. A surface that wants to defy the radar The material is based on a silica textile base on which the researchers deposited graphene using a chemical vapor deposition process. On that layer they applied a laser “erasing” technique, which allowed them to create a precise pattern on the surface and adjust your electrical impedance. In this way, they claim, they managed to make the coating effectively absorb electromagnetic waves without needing to increase its thickness or weight. The result is a flexible, ultralight metasurface with an adjustable sheet resistance between 50 and 5,000 ohms per square. {“videoId”:”x9ri2iu”,”autoplay”:false,”title”:”How China, the biggest polluter on the planet, has also become the complete opposite”, “tag”:”webedia-prod”, “duration”:”740″} Laboratory tests showed that the material maintains stable performance even under extreme conditions. After five minutes of exposure to 600 degrees Celsius in air, it retained its absorption capacity, and also withstood prolonged heating to 1,000 degrees in a vacuum without degrading. In tests with air currents of up to 200 meters per second, its loss of efficiency was less than 1%, and neither the surface pattern nor the resistance of the sheet were altered. These properties make it an ideal candidate for high-speed aircraft exposed to intense heat and friction. Withstood prolonged heating to 1,000 degrees in vacuum without degrading The material described in the study poses a possible alternative to conventional coatings, although it has yet to be demonstrated whether its advantages are sustainable outside the laboratory. US stealth fighters, such as the F-22 and F-35they use absorbent compounds They offer good initial performance, but require constant and expensive maintenance. In China, the J-20 has been seen with a coating apparently more stable, although those impressions come from displays and not verifiable technical data. The difference, for now, is in the discourse rather than the evidence. The new coating is still far from becoming a technology in real use, but it illustrates the direction of Chinese research in stealth materials. The challenge is not only to achieve high performance in the laboratory, but to keep it in flight and under extreme conditions. Chinese scientists aim to solve one of the most persistent limitations of modern fighters: the fragility of absorbent coatings. If the material achieves this stability, it could open a different stage in aircraft protection. In Xataka We believed that the F-16s were Ukraine’s great achievement: it has just taken the first step to receive up to 150 European Gripen fighters Beijing has set 2035 as the horizon to complete the modernization of its armed forces. In this context, the development of new compounds, sensors and materials responds to a broader policy aimed at strengthening its technological and military industry. Each advance in the field of stealth materials is interpreted not only as a technical improvement, but also as a step towards greater strategic independence. Images | Wikimedia Commons | Arthur Wang In Xataka | The Chinese ambition to lead each and every area of ​​the planet has found its next adversary: ​​Jaén (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 In China they have created a material for their fighters that opens a new technological direction: it aims directly at radars was originally published in Xataka by Javier Marquez .

A poster at the University of Granada uncovers one of the big problems of generation Z: “helicopter parents”

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The Faculty of Educational Sciences of the University of Granada has become famous this week for a simple paper poster that has become viral on social networks. In the message, posted by the Vice Dean of Internships, you can read: “Parents are not attended to. All students enrolled in internships are of legal age.” Among thousands of other users, the poster was spread by the professor at the University of Granada Daniel Arias Aranda in your LinkedIn profile, stating: “When you have to put up this sign at the university, something is going wrong. Dear student: solve your own problems and don’t boss around mom and dad. Remember, the age of majority in Spain is 18.” Debate in networks: autonomy and maturity. The reactions on social networks have not been long in coming, with an intense exchange of opinions between students, families and teachers. There are those who strongly defend that the students “are too old to defend themselves,” as one student pointed out. interviewed by Antena 3and that “it makes no sense for parents to go to manage exams or tutorials.” Tap on the image to go to the original message On the other hand, the general secretary of the Association of Friends of Vicente Aleixandre responded to the message of the professor from his account on Another user went even further, thinking that “It should even be illegal, a person of legal age is no longer represented by his parents in legal dealings unless a judge determines otherwise; I consider that assisting parents goes against the autonomy of the student’s will.” helicopter parents. In the background of the conversation hovered – pardon the redundancy – the concept of “helicopter parents”, a term coined in 1969 by the writer Haim Ginott in his book “between parents and children“. The term describes the behavior of mothers and fathers who are so attentive to every issue of their children that they often intervene in processes that they, as adults, they should resolve on their own. Especially in university or work matters. However, a study revealed that this excess of control can lead to children with problems resolving conflicts and dealing with daily stress, something that would make them more anxious and dependent. Although the staff of the University of Granada I remembered in The Country They remember that, fortunately, these are “completely isolated cases”, the placement of the poster was motivated because some parents have come to make complaints, manage enrollment or request explanations directly from the university staff on behalf of his children. “In these cases, I explain to the mother that what needs to be promoted is the student’s critical reasoning, that he is the one who refutes a correction, not his parents,” he declared to The Country José Ángel Morales García, professor of Neurosciences at the Complutense University of Madrid (UCM). A new parent profile. Beyond the helicopter parent phenomenonanother of the social keys that explain the rise of the debate is that current university students belong to generation Z, whose parents belong to generation X or millennials, born between the seventies and the nineties. This generation of parents was the first to go massively to university in Spain and is made up of professionals who have worked in multinationals, which gives them sufficient solvency to feel like legitimate interlocutors with teachers, academic staff and even before recruiters for a jobcoming to assume a more leading role than the student or candidate themselves. Compared to previous times, the fact that a greater proportion of parents have university experience has changed the relationship with the centers. Now they feel entitled to intervene or debate because they know the system from within. Even so, teachers insist that “the academic relationship is between the student and the university.” The research reveal that encouraging independence during youth improves their maturity and self-esteem. In Xataka | Silicon Valley’s “tech” generation Z has given up alcohol: its new fun is 92 hours of work Image | Pexels (Arina Krasnikova), Daniel Arias Aranda

Colon cancers are increasing alarmingly among young people. We have a suspect: sedentary lifestyle

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colon cancer It is one of the tumors that has increased its incidence the most in young adults over the last few decades, a trend that is very worrying because has made science need to answer why. One of the most important points are the factors that are influencing more and more young people to begin to have tumors in their digestive system. A big problem. Colon cancer is undoubtedly one of the most aggressive diseases that we endure, and also really frequent among the population, with a really aggressive treatment with surgeries that can mean the removal of part of the colonbut also with a high mortality behind them. Its early diagnosis is so relevant that in Spain there are many autonomous communities that have screening programs either screening (although sometimes they fail like in Andalusia) to begin treatment in the case of positive cases, as soon as possible to increase their chances of survival. The problem is that this horrible disease is becoming increasingly prevalent, and science is seeing many factors that are important to take into account to try to reduce the chances of suffering from it. Quantified. This trend has been reflected in a published study in Annals of Internal Medicine which has detected that in many countries the number of cases among those under fifty years of age has grown up to four times faster than in older people. In the end, it is a phenomenon that has revived the debate about the causes and future strategies that must be taken in prevention and early detection. This is extremely important, since a timely diagnosis can mean a big difference in life expectancy who has a patient. The reasons. As stated in the Institute for Cancer Research, London After studying forty-two different countries, two main explanations have been identified. The first is the screening that is done among adults. Although it is very positive to do screening among the population for this disease, the reality is that there is an age limit from which these tests are carried out. This does not occur among the younger population who do not receive this type of screening tests on a regular basis, which may explain the accelerated growth in this group, since cancers are not diagnosed in the early stages. The second reason given is obesity. In this case It is considered a very important risk factor which drives the increased probability of suffering from colon cancer in young people and adults of all ages. Although it remains to be seen if there is an increase in its relationship with the younger population. Environmental factors. In addition to these two causes, the research led by the CNIO Digital Genomics Group in Spain provides new evidence about why this may occur. In his published study In Nature, the influence of the intestinal microbiota, particularly certain strains of E.coli intestinal, producers of the toxin colibactin. As we already sawthis can cause great genetic damage to colon cells that can accelerate tumor development. But other factors associated with the patients’ lifestyle are also being considered. In this case, the increase in type 2 diabetesespecially when there is a sedentary habit and unhealthy diets that seem to increase the risk of having this type of cancer. A Swedish study with a national cohort showed that people with diabetes reach an equivalent risk of colorectal cancer at younger ages than those who do not suffer from it, requiring prevention and monitoring before the standard screening age in the general population. But ultra-processed diets also come in here, excessive consumption of alcohol or even sugary drinkswhich can be an important risk factor. Prevention. Experts agree that there is no single and definitive cause, but rather a combination of genetic, biological, environmental and social factors. While research continues, it is proposed to implement comprehensive prevention policies that adapt to these realities. To do this, they aim to apply personalized screening that includes risk factors such as obesity, diabetes or family history. But we must also focus on research into how our microbiota can have an important implication in this. This forces us to have to take great care of what we eat and maintain adequate intestinal health. But the most relevant thing is to adapt the recommendations for starting screening for high-risk groups, such as young people who have diabetes or a family history so that they begin surveillance at age 40. Images | Ramon Inciarte Julia Koblitz In Xataka | Until now, different types of cancer required different types of treatment. A new vaccine wants to change that

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