Germany

Germany has found a source of perovskite for solar panels in an unusual place: bullets from the 17th century

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Solar energy is, with the permission of wind energy, the renewable energy that has stood out the most and best in the energy transition on a global scale. There are already solar parks everywhere: from fields that They fill the emptied Spain to deserts passing through the tibetan plateau and also in high seas either in lakes. And although the most common technology is crystalline silicon, perovskite is the great promise. There is a compelling reason to bet on perovskite: a record efficiency certified in a laboratory. up to 26%. However, a large-scale deployment of perovskite solar cells requires a large-scale, sustainable supply of high-purity lead iodide. We have come across lead: a toxic element whose mining is not exactly sustainable. On the not-so-good side, recycling it to the required purity levels is a technical challenge that a German research team at the Helmholtz Institute in Erlangen-Nuremberg has just solved. And in what way: have achieved converting 17th century musket balls into high-performance solar cells. The idea. It consists of a process of upcycling (upcycling) in two stages: first a non-aqueous electrochemical route and then purification through the crystallization of single crystals, quite different from traditional methods based on strong acids and large volumes of water. To demonstrate the robustness of their method, the team used lead bullets from the 16th and 17th centuries as raw material, a truly complicated material in that it contains carbon residues, metallic inclusions and oxidation patina. If the process can clean up this type of historical residue, it can handle virtually anything you throw at it (obviously any lead residue). Recycling bullets into solar cells transforms lead waste into a clean energy source. Why is it important. Perovskite solar cells require extraordinarily pure lead iodide, and achieving that level of purity from contaminated waste was until now a challenge without a practical solution that this research has solved: the team manufactured solar cells with their recycled material and obtained 21% efficiency, practically identical to the 22% of devices manufactured from industrial synthesis. Beyond the technical result, the process solves two problems at the same time: it offers a way to supply the enormous demand for lead iodide that will be generated by the take-off of perovskite solar cells without resorting to new mining and at the same time eliminates a toxic pollutant whose current management is expensive and environmentally problematic. Context. As we mentioned above, lead is an abundant waste: it comes from used car batteries, electronic scrap, construction materials or ammunition, among others. Lead recycling is dominated by car batteries, which have very high recovery rates in developed countries. The problem is in the rest: In 2018, only 48% of the world’s residual lead at the end of its useful life was recovered and in more dispersed flows such as electronics or construction, the recovery is even lower. Conventional recycling returns metallurgical-grade lead, useful for batteries and alloys, but far from what the solar industry requires. In addition, they are slow processes that generate toxic gases such as nitrogen oxides and large quantities of contaminated wastewater, up to 70 liters per kilogram of lead iodide produced. Traditional high-temperature purification methods are expensive and complex. More robust, adaptable and cleaner extraction and purification methods are needed for perovskite technology to truly scale. How they do it. The bullets are cleaned with dilute nitric acid, melted and molded into rods that act as electrodes in an electrochemical cell with acetonitrile and dissolved iodine. When current is applied, lead reacts directly with iodine and precipitates as lead iodide with 94% efficiency. Doing it this way, in a non-aqueous medium, is a deliberate decision to avoid introducing impurities that would accelerate the degradation of the perovskite. The resulting lead iodide still contains metallic impurities, so it is not suitable for solar cells. That is why it is subjected to a second purification stage through crystallization at a controlled temperature for about 70 hours. The process is exceptionally selective: as the crystal grows, it expels contaminating metals such as silver or copper, raising the purity of the material to levels comparable to or even higher than the highest quality commercial standard. Yes, but. The process works and the results are solid, but scale matters: at the laboratory level, productivity is just 0.05 grams per hour and each purification cycle lasts about 70 hours. The leap to an industrial scale requires solving the recovery of organic solvents, controlling the passivation of the electrodes and substantially improving the productivity of the process. The research team does not hide it: the chemistry is proven, but the distance from the laboratory to a real production plant is long and will determine whether we end up seeing perovskite panels made with recycled lead or if this remains like a shiny piece of paper in a drawer. In Xataka | Germany has had a crazy idea to solve one of the problems of renewables: covering a lake with solar panels In Xataka | 800 meters deep in a 175 million year old rock: Germany’s solution to nuclear waste Cover | By Branch and Soren H

Nuclear waste is a problem, so Germany is looking for the solution in a Jurassic rock in Switzerland

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Nuclear energy is capable of generating clean electricity, continuously and in large quantities. A marvel except for two small details: the risk of a possible leak and what to do with its waste. The most widespread solution is bury them in a nuclear cemetery and wait. How much? Well, it depends, but it could be hundreds of thousands of years, until they are no longer dangerous. The million dollar question is where. An international research team led by Germany has started to drill a hole in a Swiss mountain to try to answer it. The project. Her name is DEBORAH (Deep borehole to resolve the Mont Terri Anticline Hydrogeology), stands for deep drilling to understand the hydrogeology of the Mont Terri anticline and is exactly what it does. Your goal? Document in great detail the layers that exist and their properties. There is some especially interesting material: Opalinus Clay. This deep experiment involves the German Geosciences Research Center GFZ and the German Federal Institute for Geosciences and Natural Resources (BGR), the Nuclear Waste Service (NWS) of the United Kingdom and Swiss researchers from the University of Bern. Why is it important. Because it can be the ideal rock to build a radioactive waste deposit. As details GFZSwitzerland has already made the decision, but Germany and the United Kingdom (the other parties to the project) have not yet. The key is what the analysis of the drilling says: details such as how much water it allows to filter, at what speed or where it will be key to making the decision. It is not trivial: a leak, no matter how slow and small, can contaminate aquifers. What’s special about it. The Opalinus is a clay rock dating back to the Middle Jurassic, with an estimated age of approximately 175 million years. Simply put, it is clay that has been compacted into rock. And it has a property that makes it a good candidate for nuclear storage: its very low permeability. Context. The study of Opalinus is not new by any means: GFZ’s on your radar for 30 years because, in addition to its very low permeability, it has properties such as its plasticity (under pressure, warps instead of breakingsomething convenient if it works as a radioactive deposit) or its ability to retain certain radionuclides. Switzerland has already chosen it, but it remains to be known how it behaves under the conditions that exist in much deeper areas, where, for example, temperature or pressure change noticeably. How they do it. In the Swiss canton of Jura, near the municipality of Saint-Ursanne, there is that Mont Terri. In its bowels there is an underground laboratory that is accessed through the security gallery of a highway tunnel, about 150 – 200 meters underground. A drilling platform works continuously there, advancing meter by meter, until reaching a depth of 800 meters. The drill uses a hollow crown that allows extracting intact rock columns, the sample that is later analyzed in the laboratory. Each advance works as a witness insofar as it reveals the age, the composition, the fractures and the differential quality: how it behaves with water. In addition, they use seismic and gravimetry techniques to obtain a complete x-ray of what is hundreds of meters deep. In Xataka | Ships have been damaging the oceans with noise for centuries. Germany is working on silent propellers to solve it In Xataka | 700 tons of nuclear waste have arrived in Germany from England. The Germans are not entirely happy Cover | Ilja Nedilko and Evangelos Mpikakis

Ships have been damaging the oceans with noise for centuries. Germany is working on silent propellers to solve it

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Every time a boat crosses the seas, it is accompanied by a continuous noise underwater: that of the propellers that propel it. The noise problem of propellers in marine ecosystems is identified academically since 2004, but its reason for being is even older: the first time they analyzed its cause It was in 1893. What there is no solution to that disturbing low-frequency sound that spreads for kilometers, disturbing fish, cetaceans and other marine living beings. And its reason for being is even older: the first time cavitation was analyzed was in 1893. A team from the Kiel University of Applied Sciences has set out to remedy it with its project MinKav. Brief notes on cavitation. To understand the problem, we must first see what happens to the blades of a propeller when they rotate at high speed. With their movement, the blades generate a pressure difference between their faces. Thus, on the back side the pressure drops so much that the water changes state, going from liquid to gas. More specifically, thousands of small vapor bubbles. The problem is when these bubbles leave that low pressure zone: they then implode violently, returning to the liquid state, which causes pressure waves that are transmitted at high speed through the water. If the waves collide with a surface, they can deteriorate it considerably. The phenomenon of cavitation is accompanied by vibration and noise, as if it were gravel falling on a machine. This sound is broadband, with low frequency components capable of traveling long distances. Why is it important. Of all possible aquatic pollution, human-caused acoustics are the least mainstream, but their effects are documented. A couple of concrete examples of the importance of sound for aquatic species: whales They use sound to communicate, orient themselves and huntthe fish for such essential tasks how to detect predators or spawning and crustaceans are sensitive to vibration in the background. To get an idea of ​​the magnitude of the problem, according to the International Chamber of Navigation There are approximately 50,000 merchant ships operating continuously around the planet and they all emit that sound. It is not something specific. And the research team adds a twist: a propeller with less cavitation is not only less noisy, it can also potentially be more efficient (cavitation is wasted mechanical energy). Less noise and fewer emissions. The discovery. The HAW Kiel team has identified when the problem originates: the sound peak does not occur when the bubble forms, but right at the end of the collapse. And its intensity depends directly on the speed at which this collapse occurs. The faster you go, the stronger the blow. Illustration of human, marine animal and environmental sound sources in the marine environment, with proportional sound waves. National Office of Oceanic and Atmospheric Administration How are they doing it. The experiments are being carried out at the Naval Hydrodynamics Laboratory of the German university, in a kind of aquarium with a miniature propeller, so that they can reproduce the flow conditions around the propeller. Equipped with underwater microphones and high-speed cameras, they have determined where and when that noise peak occurs. The next step is computer simulations to experiment with designing different propeller geometries to reduce noise without sacrificing performance, efficiency or durability. The most obvious solution, lowering the rpm, is not an option: a commercial boat cannot afford to go slower. Pending subjects. However, MinKav started in January of this year, will last three years and have a budget of 390,000 euros, modest for a problem of global scale. Even if MinKav were to come to fruition, it would have to go from the laboratory to scale-up on a commercial ship. In Xataka | A Spaniard has patented a mast that transforms wind and waves into electricity: his invention challenges diesel in boats In Xataka | A “roomba” to clean rivers: the ship that the Three Gorges Dam has launched in China Cover | Pexels

Europe has found a hole that has been sending sensitive material to Russia for years: a “Mercadona” from Germany

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More than 400 billion packages circulate around the world every year, and the international postal system is designed to move them as quickly as possible. To achieve this, many shipments cross borders with simplified controls and risk-based reviews, not full inspections. That logistical efficiency, designed to speed up commerce and everyday correspondence, sometimes generates unexpected cracks in much larger systems. An unexpected hole. Since the invasion of Ukraine in 2022, the European Union has lifted one of the sanctions regimes wider of its history with the aim of economically isolating Russia and hindering access to technology that can feed his military machine. Advanced electronics, sensitive components or certain industrial equipment are theoretically blocked to prevent them from reinforcing the Kremlin’s war economy. However, the practical application of these restrictions faces a constant problem: the more complex the sanctions system, the more ingenious They become the routes to avoid it. And in this case the weak point has appeared in a place so everyday that it is difficult to believe. A clandestine channel in the supermarket. The story was told in a report in Politico. Apparently, in several Russian chain supermarkets throughout Germany, among shelves of sweets or freezers, advertisements have appeared that promote a logistics service specialized in sending packages from Germany directly to Russia. What at first glance seems like a postal service for the Russian diaspora has become an unexpected crack within the European sanctions system. Customers may drop off boxes that supposedly contain clothing, books or small personal items. No one inspects the contents and, for a few euros per kilo, the package begins a journey that ends in Moscow or St. Petersburg. In this apparently innocent flow, even sensitive electronic components whose export is prohibited. The inherited logistics network. The middle counted that behind this circuit is LS Logistics Solution GmbH, a German company created by former employees by RusPostthe subsidiary that the Russian state postal service had established in Germany before sanctions forced it to close. After the invasion of Ukraine, that structure did not completely disappear. It was reorganized under a new namekept part of its staff and continued to operate from Germany with a similar system. The result is a kind of parallel postal network that collects packages throughout Europe and concentrates them in a warehouse near the Berlin airport, from where shipments to Russia are organized. The seal trick. The key to the system is an apparently bureaucratic detail. The packages do not have labels from the Russian Post, but from the state postal service of uzbekistan. Since that country is not subject to European sanctions, the shipment can take advantage of special rules that protect international postal traffic. In practice, this means that packets move with lighter controls than traditional commercial shipments. This administrative difference, designed to facilitate mail between citizens, becomes a back door for sensitive goods to cross borders without raising too many suspicions. A kilometer trip through Europe. The route of the packages illustrates chow it works the system. After being picked up from supermarkets or delivery points, they spend a day or two in Germany before moving to a large logistics warehouse near Berlin airport. From there they are loaded onto trucks that cross Poland on the A2 highway and continue to Belarus. Even though this country is also sanctioned for its support to Moscow, the packages continue to advance thanks to your status international postal mail. After traveling more than 2,000 km, they end up arriving at addresses in Moscow or Saint Petersburg. The problem of sanctions. Plus: the episode also reflects a challenge that those who design economic sanctions are well aware of. Officially blocking trade is relatively simple, but preventing alternative routes appear It is much more complicated, and that is already we have told it in the drone war in Ukraine. Each new restriction forces the creation of more complex control systems, while those who try to circumvent them constantly search new legal cracks or logistics. The result is an endless game of adaptation in which authorities try to close holes just as new ones begin to appear. Always one step behind. They finished the report explaining that European authorities are already reviewing the case and have strengthened the rules to pursue sanctions violations. Be that as it may, the discovery of the network itself demonstrates to what extent the system can make fun. As governments design increasingly strict legal frameworks, makeshift logistics networks continue to find ways to move sensitive goods across of unexpected routes. And in this case, the blind spot that allowed this channel to Russia to be kept open was not in an industrial port or a large cargo terminal, but in something as everyday as the check-in counter. a supermarket. Image | flowcomm, RawPixel In Xataka | In 2022, the war in Ukraine sent supermarket prices soaring. Iran threatens to make it child’s play In Xataka | The EU has a perfect plan to suffocate Russia. The problem is that now it needs its oil to survive

Germany wants to do what Japan did with rare earths in 2010: join forces against China

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BMW, Rheinmetall and the main German industries are working on the creation of a joint agency to purchase critical mineralsa move that would reduce dependence on China, according to they count from Financial Times. The idea is to pursue the model that Japan proposed a few years ago, and the story behind it explains why it makes sense. The starting point. In 2010, China imposed an embargo on rare earth exports to Japan in the midst of a territorial dispute. Tokyo depended on these materials to manufacture everything from cars to electronics. To alleviate the mess they had gotten themselves into, they decided to build an alternative architecture. They created JOGMEC (Japan Organization for Metals and Energy Security), a state agency that collaborates with the country’s main conglomerates to ensure the supply of minerals, oil and gas. With this, Japan significantly reduced its dependence on China for rare earths. What Germany is building now. According to counted In the middle, BMW works together with the VDA automobile lobby and representatives of the German defense industry in order to develop a structure similar to what Japan did at the time. Rheinmetall is also in the talks. The specific idea is to create a kind of large private company that bulk buys critical raw materials (lithium, gallium, germanium, rare earths) on behalf of German industry. Just like share In the middle, the federal government could participate with a minority stake. The figures are not yet finalized, but the total cost of the project could amount to several hundred million euros. Why now. Last year, China imposed export controls on essential materials for batteries, permanent magnets and weapons systems. In November it temporarily suspended some of these restrictions until November 2026, but the scare was already in place. Europe was exposedwithout real alternatives, without negotiating power, nothing to do. And German industry (car manufacturers, defense companies, industrial machinery) realized how fragile its supply chain was. The Japanese model. JOGMEC works because it combines public capital with the agility that its large private companies allow, as they are structures with centuries of history in Japan specialized in industrial supply. Germany already has a raw materials agency, DERA, but sources close to the media recognize that needs a profound reform to fulfill that role. The agency being proposed now would have more muscle, with active financing, investment capacity in mining and recycling projects, and direct presence in the market. The state development bank KfW has already prepared a fund of 1 billion euros to finance mining, processing and recycling projects of critical materials, which would serve as a complement. Diplomacy. Just like account The media, Chancellor Friedrich Merz contacted Japanese Prime Minister Sanae Takaichi this week, and critical minerals were on the table. And Japan has shown interest in exporting its model abroad. In parallel, this same week the media informed also that the Australian Lynas Rare Earths, the largest producer of rare earths outside China, has closed a supply agreement with Japan with a guaranteed minimum price of $110 per kilogram for neodymium-praseodymium for 12 years. The same price that Washington guaranteed to the American producer MP Materials. The tension with Brussels. The European Commission also works in a centralized body to coordinate strategic purchases and reserves of critical minerals. But from Germany there is skepticism. According to share FT, Germany’s position is that “the industry must make its own decisions” and that governments should limit themselves to managing strategic reserves. In other words, Berlin prefers a model of private initiative with specific state support rather than leaving the strategy in the hands of Brussels. What is at stake. Steel, lithium and rare earths are the backbone of the energy transition and European rearmament. Without neodymium there are no magnets for electric motors or guided missiles. Without gallium and germanium there are no advanced semiconductors. China controls between 60% and 90% of the production chain for most of these materials. Hence many countries are restless. Cover image | Prometheus and Wikimedia Commons In Xataka | The United States knows it has a problem with rare earths from China. And he believes he has an alternative: Mexico

Germany has a plan to lead the world in nuclear fusion. And it has committed to doing so in the 2030s

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Germany is very serious about nuclear fusion. The state of Bavaria, the company specialized in the development of type nuclear fusion reactors stellarator Proxima Fusion, the energy company RWE AG and the Max Planck Institute for Plasma Physics (IPP) have agreed to collaborate in the development and implementation of the first fusion power plant of type stellarator of Europe. And, presumably, the world. Its strategy seeks to bring this facility into operation in the 2030s with the purpose of demonstrating a net energy gain. This simply means that the reactor should be able to produce more energy than it consumes. Alpha, which is what this demonstration fusion reactor will be called, will be built in Garching, very close to the IPP facilities. However, this is not all. And Alpha will be used to test the technological solutions that will later allow the construction of Stellaris, the first commercial plant of stellarator type fusion energy. The latter will be hosted in the town of Gundremmingen. If the organizations involved in this project achieve their goal over the next decade, Germany will consolidate itself as a world power in fusion energy. Germany firmly believes in ‘stellarator’ fusion reactors Experimental nuclear fusion reactors stellarator They represent a very solid alternative to tokamakas ITER either JET. And they are not exactly the result of recent research. In fact, both designs were designed during the 1950s. He stellarator It was designed by the American physicist Lyman Spitzer and served as the foundation on which the plasma physics laboratory at Princeton University (USA) was built. The design tokamakHowever, it was devised by the Soviet physicists Igor Yevgenyevich Tamm and Andrei Dmítrievich Sakharov based on ideas proposed a few years earlier by their colleague Oleg Lavrentiev. Both reactors were designed with the purpose of confining very high temperature plasmaand, curiously, during the 50s and 60s the design stellarator received great support from the scientific community in the West due to its enormous potential. ‘Tokamaks’ require that magnetic fields be generated by coils and induced by the plasma itself However, when Soviet and American scientists published their results and compared them, they realized that tokamak design performance was one or two orders of magnitude better than that of the stellarator. From that moment on, this latter design was largely marginalized. The most obvious difference between one and the other lies in their geometry, but it is enough to investigate a little about both to realize that the reactors stellarator they still have a lot to say. type reactors tokamak They are shaped like a toroid (or donut), and stellarator They have a more complex geometry that resembles a donut twisted on itself. However, the fundamental difference that exists between these two designs is that the reactors tokamak require that the magnetic fields that confine the plasma be generated by coils and induced by the plasma itself, while in reactors stellarator everything is done with coils. There is no current within the plasma. This means, in short, that the latter are more complex and difficult to build. In Europe we have a type fusion reactor stellarator extraordinarily promising: Wendelstein 7-X. It is installed in one of the buildings of the Max Planck Institute for Plasma Physics in Greifswald (Germany), and its construction was completed in 2015. The first tests carried out in this fusion reactor between 2015 and 2018 went as planned, so in November of this last year an important moment arrived in its itinerary: it was necessary to modify it to install a water cooling system that was capable of more effectively evacuating the residual thermal energy from the walls. of the vacuum chamber, as well as a system that would allow the plasma to reach a higher temperature. The work that required these modifications was successfully completed in August 2022. And in February 2023, the Wendelstein 7-X reactor reached an important milestone: it managed to confine and stabilize the plasma for 8 uninterrupted minutes in which it delivered a total energy of 1.3 gigajoules. During the last two years everything learned in the development and the first tests carried out on this machine has been used by Proxima Fusion. In fact, its founders come from the Max Planck Institute for Plasma Physics. If Alpha goes well, commercial fusion energy will be a reality before the end of the next decade. This is the true purpose of Proxima Fusion. Image | Generated by Xataka with Gemini More information | Interesting Engineering In Xataka | An alternative to ITER in nuclear fusion is being cooked in France: a commercial ‘stellarator’ reactor

The blockade of ingredients to Nazi Germany led Coca Cola to throw away whey and apple pulp

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When you open a Fanta, you hardly think about World War II. However, this fruit-flavored drink was born in 1940 within Nazi Germany. It was a solution from Coca-Cola, owner of the brand, to the blockade of ingredients that the allies imposed on the country. Quite a commercial turn that would result in one of the company’s most popular drinks. To block. In September 1939, when Germany invaded Poland and the United Kingdom and France declared war on the Third Reich, the economic consequences spread far beyond the battle fronts. American multinationals that maintained industrial ties with German territory saw communication with their subsidiaries interrupted. The British naval blockade closed the ports; Trade with the United States, which had grown throughout the previous decade, stopped. The Coca-Cola situation. The company had been operating in Germany since 1929. Max Keith was a German manager who had assumed control of the subsidiary and built a giant infrastructure from scratch with bottling plants and distribution networks. He had even managed to produce on his own seven of the nine secret ingredients. But the concentrated syrup traveled to Germany from Atlanta, headquarters of Coca-Cola. When the embargo cut off that supply, the plants ground to a halt. The alternative was closure, but Keith did not give in. The remains. What he did was look for substitutes in what he had at hand, waste from other food industries. How did I count? expert Mark Pendergrast“what was left of what was left”: whey, a byproduct of cheese making; leftover apple pulp from cider presses; fruit peels; beet sugar, because cane sugar was a luxury… the resulting liquid was a brownish yellow, much less sweet than any modern soft drink, and its flavor changed from batch to batch depending on what ingredients were available. A name. Keith gathered his team to name the drink. He asked them to use their imagination, Fantasy. And from there the name came directly, with the advantage that it worked in almost any language without the need for translation or phonetic adaptation. It was an immediate success: in 1943 Coca-Cola sold approximately three million cases of Fanta in Germany. AND although the soft drink never had a direct connection with the NazisKeith did manage to integrate his advertising into the regime’s events, including the 1936 Berlin Olympics. In fact, he could have registered Fanta in his own name, but he did not do so. A success. Fanta was not drunk solely as a soft drink. Sugar rationing was so severe in wartime Germany that in many German homes it was used for sweeten soups and stews. Keith had obtained a partial exemption from sugar rationing in 1941, making it not only a soft drink, but also an accessible sweetener. It was not an isolated case. Fanta was not a rarity. The World War II food industry reformulated several products forced by embargoes and rationing. Nescafé, launched in 1938arose from the need to dispose of surplus Brazilian coffee at a time of commercial crisis: its soluble format allowed it to be distributed under difficult logistical conditions, and it became a standard supply for the American army. Margarine was a substitute for butter in times of Napoleonic shortages, and experienced a second massive expansion in Europe in the 1940s because butter was rationed. Post-war. When Coca-Cola relaunched Fanta in Naples in April 1955 with an orange formula made from local citrus, the name was the only thing connecting it to post-war Germany. The Italian company SNIBEG had developed the recipe on its own and Coca-Cola bought itgiving it the name of the one who already had the intellectual property. From there it grew: it arrived in the United States in 1958 and expanded globally throughout the 1960s and 1970s. Conflictive spot. However, the drink’s German past loomed large over the brand in 2015, when Coca-Cola launched a special edition in Germany for Fanta’s 75th anniversary. It was a reissue of the original recipe, with 30% whey and apple extract, distributed in glass bottles that evoked the design of the 1940s. He video campaign was especially inappropriatesince he only talked about ingenuity in times of scarcity and ignored the reason for that ingenuity: war embargoes against Nazi Germany. He concluded by inviting viewers to recover “the feeling of the good old days.” The video was removed after frontal rejection by the public and press. It was inevitable then to remember brands like Volkswagenwhose name directly alludes to the Nazi regime’s automotive program and whose plants used forced labor during the war; or like Hugo Bosswhich made military uniforms for the SS and Wehrmacht; or as the German subsidiary of IBM, Dehomagwhich provided the regime with punch card technology that allowed entire populations to be censused, classified, and tracked with a speed that manual methods made impossible. Origins that are sometimes murky due to the context, but that leave a few questions in the air about the inhumane role of any industry. Which includes the sparks of life. Header | Wikipedia

Germany wanted to see if working four days a week was efficient. 70% of companies think so

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The four-day work week started in Germany as an experiment to search for the maximum productivity of companies without having an impact on an exhausted workforce and without the ability to reconcile family life. Two years after the start of this test, the data confirms that for the companies that participated it was not a simple test, but rather it has materialized in a change in the way of working that many companies have decided to consolidate. Now the monitoring report prepared by researchers from the University of Münster together with the consulting firm 4 Day Week Global. It analyzes what happened after the pilot test that began in 2024 and what subsequent effects it has had. The main conclusion is that around 70% of the companies that participated in that test continue to apply some model of reduction of working hours a year later. A known formula and a varied sample. The original four-day week project in Germany was built around to the 100-80-100 model: 100% of salary, 80% of time and 100% of productivity. This model of reduction of working hours is the same one that was carried out in Valencia in 2023, Portugal either United Kingdom. In the initial phase, 45 companies from different sectors participated, dedicated to manufacturing, insurance, technology, media, commerce or education. Furthermore, to be as representative as possible of the German industrial fabric, companies of different sizes were chosen: from micro-businesses with 1 to 9 employees, to large companies with more than 250 employees. The first data already gave clues. Researchers have been collecting data from participating companies and their employees since day one. A few months after starting the test, the companies were delighted with the results, to the point that in preliminary results73% said they would not return to the traditional five-day week. The new report provides the perspective that time gives and whether that initial impetus has been consolidated. Two years after the start of the test, seven out of ten companies that participated in the test not only maintain the four-day workdaybut they have integrated it into their normal operation. More than four days: flexible reduction of working time. One of the most interesting findings from the monitoring is that the four-day workweek model has evolved and every organization has implemented it adapting it to your needs. Not all companies have opted for a Monday to Thursday work week. Around 22% of the participating companies have adapted the initial scheme towards more flexible formulas: reduction of annual hours, alternate weeks or internal adjustments according to workload. The report itself speaks less of a “four-day week” and more of “reduction of work time“. The label matters less than the redesign of the work day and the elimination of superfluous tasks, fewer unnecessary meetings and greater autonomy of the teams. No impact on profits or productivity. In business terms, the German test has been a success since, despite having maintained 80% of the initial day, there have been no drops in either the level of profits or in productivity or slightly improved with respect to the starting point. That is, they have managed to do the same thing in less time. What it did have a strong impact on was the well-being of employees, where 90% reported improvements in the balance between personal and professional life. As a result of this improvement, employees reported feeling less stress and greater commitment to the company. 38% of companies indicated that sick leave and absenteeism of their employees had been reduced, while 56% claimed to have detected no changes. Lights and shadows in the reduction of working hours. Progress was also observed in job satisfaction and in the perception of the company as an attractive place to work. The study indicates that 87% of companies detected improvements in talent retention. For their part, 75% claimed that their companies now had a greater capacity to attract talent in selection processes. This, in a scenario of labor shortagerepresents a competitive advantage. However, as happened in other tests of the four-day work week, not all companies have followed the same evolution. About 30% stopped applying the initial scheme or returned to the traditional five-day week. The main reasons were operational, difficulties in coordinate with your clientswork peaks that are difficult to absorb or inflexible internal structures. In Xataka | Employees in Spain clear up doubts: working fewer days is better than working fewer hours, according to a survey In Xataka | Spain already has its first municipality with a four-day work week. It is not in Madrid or Barcelona, ​​but in a corner of Cádiz Image | Unsplash (Gonzalo Leon Jasin, Josue Isai Ramos Figueroa)

Tesla’s enormous problem in Germany has an alarming figure and a clear person responsible: Elon Musk

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Three out of four potential buyers of an electric car reject the idea of ​​buying a Tesla. The study points to the German market, which is the first electric car market in Europe by sales volume, and explains an important part of Tesla’s failure in Europe during 2025. Three out of four. 75% of potential buyers of an electric car in Germany do not value the idea of ​​buying a Tesla car, according to a study by the German Institute of Economics in collaboration with the Technical University of Dresden. The figure, which in itself is bad, has even more meaning. And that 75% is made up of potential customers who believe it is unlikely to buy a Tesla (15%) and those who completely reject buying a vehicle from this brand (60%). The reason, as we could imagine, is not a question of competition or price. The disaster. Last year, 545,142 electric cars were sold in Germany. It was, by far, the strongest electric car market in Europe. The growth was 43.2% compared to 2024, the year in which just over 380,000 electric cars were sold. Its market share reached 19.1%, above the European average, according to ACEA. For Tesla, however, it was not a great year. In Europe, 150,504 electric vehicles from Elon Musk’s company were sold, 37.9% less than the previous year when 242,436 registrations were registered. The most problematic thing is that the company had achieved a market share of 2.3% (a good bite to eat on the electric car pie, which in 2024 was only 13.6% in the European Union. That is, almost two out of every 10 electric cars sold in Europe were from Tesla. The drop was even more pronounced in Germany. There, the drop was 48.4%, as recorded Reuters at the beginning of the year. And, with everything, It has not been its strongest percentage drop in European countries but the damage in volume is more than evident. The politics. The decision by which the Germans seem to completely reject Tesla is evident to the creators of the study: Elon Musk’s political positioning. According to the authors, political positioning influences the purchase of a car more than sociodemographic characteristics. They point out that young people, those with a higher level of education and those who live in urban areas are more inclined to purchase an electric car. In political terms, Green supporters are the most open to acquiring this technology and AfD (German far-right) voters are the least enthusiastic. On average, they say, the potential customer for an electric car has grown by over 40% and those who reject it outright have also fallen. But the problem for Tesla is that it is not attractive to either group. Among the Greens, only 10.8% value the purchase of a Tesla as their first option and the percentage grows among AfD followers to 15.2% but it must be taken into account that these voters are also less in favor of buying a car of this type. Just lose. The study concludes with a statement: Elon Musk has lost support for buying cars among progressive groups (those who buy the most electric cars or are willing to buy) and has not attracted enough conservative groups to alleviate this disadvantage. The result is a direct consequence of a year 2025 that began with Elon Musk doing a Nazi salute during Donald Trump’s takeover of the United States and which continued with a explicit support of the company’s head for AfD and other far-right parties in Europe. It must be taken into account that this type of political positioning in Germany is much more delicate than in other countries. In Germany the Nazi salute is a crime punished with a fine in minor cases but which can be grounds for imprisonment in more serious cases. Study on preferences when buying an electric car in Germany segmented by political parties. Source: German Institute of Economics The worst option almost always. The image above shows the predisposition of Germans to the type of electric car they want to buy, segmented by their origin and the political parties that these potential customers vote for. According to this data, Tesla is the last option in four of the six political parties studied, even behind Chinese cars as the first option. The latter always surpass him except among CDU and SPD voters (although in both cases a greater percentage considers it possible to buy a Chinese car over a Tesla if we add the second level of predisposition). Tesla reaps the worst results among the Greens and Linke (The Left) and the absolute rejection is greater among the supporters of the latter political party. Chinese cars are, in all cases, the second option chosen when considering those who are willing to buy an electric car and those who value it as a possible purchase. The Germans are the ones who obtain the most support and the first option in all cases, with the greatest support among Green voters and with the AfD as the party with the greatest reluctance to buy it. Photo | Elon Musk in X and German Institute of Economics In Xataka | Tesla is discovering in real time that the most difficult thing was not to build a car brand from scratch: it was to maintain it

Spain agreed with Germany and France to bypass the US. And it will end with a fleet of F-35s because of a French name

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Since the end of the Cold War, Europe has tried several times to build large joint military programs capable of rivaling those of the United States, almost always clashing with national interests, different industrial cultures and, of course, technological egos that are difficult to fit into. Each generation of fighters has promised more integration and less external dependence. Few have managed to fulfill it, and now it was not going to be less. The surprise that was not. He FCAS was born as a high-caliber strategic ambition: France, Germany and Spain agreed to promote a new generation combat air system to get ahead of the United States and reduce European dependence of American fighters, with the ubiquitous F-35 in all pools. It was an explicit attempt to surprise technological, industrial and political in front of Washington. Today, that project more than 100,000 million of euros staggers to the point of threatening the opposite result: that Europe will continue buying F-35s and that Spain will end up reinforcing a US fleet just when it had opted for its own alternative. Dassault, the constant. Here comes an actor with a name of his own who has turned everything upside down. The main blockade does not come from Berlin or Madrid, but from a historical constant in the French military industry: Dassault Aviation. The Financial Times recalled this morning that the company, controlled by the Dassault family for generations, has demonstrated time and time again that its priority is maintain absolute control of the design and production of French fighters. He already did it in the eighties abandoning the Eurofighterand today he repeats the pattern at the FCAS, refusing to give up technical leadership or accept a shared governance with Airbus. Dassault Rafale A project broken from within. Furthermore, the FCAS was designed as an integrated system: a manned fighter, drone swarms, advanced weapons and communication networks, with Dassault leading the aircraft and Airbus the rest. That balance was blown up when disputes began on specifications, distribution of work and industrial control. France wanted a plane lighter and navalizableGermany another heavier and more versatile one. The technical differences masked a possibly deeper clash: who is really in charge at the heart of the system. France does not rule as much as it seems. Here another crux appears to understand the mess: although the French State is Dassault’s main client and controls exports, its real capacity to impose decisions is limited. Yes, the company has survived nationalization attempts, political pressures and merger projects for decades, always prioritizing independence and control. Hence, presidents have passed and ministers have changed, but Dassault remains the same. President Emmanuel Macron has tried rescue the FCAS in multiple diplomatic rounds, but his room for maneuver has narrowed as he nears the end of his term. Spain, trapped in collateral damage. The Spanish nation entered the FCAS as a partner convinced that the project would allow it break the dependency technology of the United States. That agreement with Germany and France meant resigning in the short term to the American F-35 in exchange for their own European future. If now the FCAS ends up failing as it seems and Spain ends up resorting again to American fighters, the irony is bitter: because the fault would not be in Washington, but in “home” of an ally. The outcome that no one wanted to admit. As we counted yesterdaywith the project running aground, Germany is already slipping that it could go on your own or look for other partners, while France protects to their national champion. From that perspective, the FCAS has become the closest thing to a failed test of European credibility in common defense. For Spain, the risk is now double: losing years betting on a blocked program of billions of euros and being forced to knock on Washington’s door again, although now with less political margin and worse conditions. He surprise European will have to wait and for now it is diluted, and the old Atlantic balance is imposed again, this time not due to lack of ambition, but because of excess control. Image | José Luis Celada Euba In Xataka | Spain, France and Germany could not depend on the “button” of the F-35. So the future European fighter aims for something else In Xataka | If the question is where is the 100 billion European fighter, the answer is simple: stuck on a dead-end runway

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