make your energy incredibly cheap

At dawn, in the Alxa Desert, in the Chinese region of Inner Mongolia, a huge white structure began to rise above the horizon. It was not a balloon or a meteorological experiment: it was a 5,000 square meter kite, designed to generate electricity hundreds of meters high. No blades. Last Wednesday, the test of what is the first Chinese national project dedicated to developing high-altitude wind energy took place. The kite, developed by China Energy Engineering Corporationwas raised with helium balloons to a height of about 300 meters before being successfully deployed. In addition to the gigantic main model, two additional 1,200 m² kites were tested. According to Global Timesthe test consisted of fully deploying and retracting the kites, an essential step to validate their operation in real conditions. During the test, engineers measured the tension of the system and the aerodynamic behavior of the fabric to collect data that will be used to fine-tune the final design. Cao Lun, head of the national high-altitude wind power project, told Xinhua —cited by SCMP— that the test campaign will allow “the kite to be optimized and the foundations to be deployed to deploy the complete system and define its standards.” A new energy frontier. Studies from the Carnegie Institution for Science They estimate that high altitude winds They contain enough energy to supply global demand more than 100 times. The reason is simple: in the upper layers of the atmosphere the winds are faster, more constant and more energetically dense. Added to this is another decisive argument. According to CCTVkite systems can reduce land use by 95%, save 90% of the steel needed in a conventional wind farm and reduce the final cost per kilowatt-hour by around 30%. The potential is such that a single 10-megawatt system could power more than 10,000 homes a year, without towers weighing hundreds of tons or extensive foundations. How do these kites work? The technology tested belongs to the category of terrestrial systems: the kite does not carry a generator in the air, but rather transmits its traction through a cable that moves a generator located on dry land. The process follows a mechanism of “shoot and collect”: Helium balloons raise the kite to operating height. The aerodynamic fabric unfolds and captures powerful winds. The traction tightens the cable and rotates the generator. To retract it, the kite adopts a posture of minimum resistance, reducing energy expenditure to a minimum. The cycle repeats itself. Someone came forward: Ireland. This time it was not China, as so many other times, but Ireland. The Dutch company Kitepower tested 60 m² kites capable of rising up to 425 meters, generating electricity through a figure-eight flight pattern—similar to kitesurfing—that maximizes traction. Each kite can produce up to 30 kW per hour. However, the differences are notable because European kites are much smaller than Chinese ones, European systems stand out because they can be deployed without civil works. Furthermore, the European objective is to take these kites to islands and remote communities that today depend on diesel. On the other hand, the Asian giant seeks to feed entire cities from the heights. Is the future of energy in the sky? If these giant kites manage to take off not only in tests, but in real production, we could be facing a new way of generating renewable energy: light, cheap, scalable and capable of using an almost infinite resource. Perhaps, soon, wind farms will not be measured by the height of their towers, but by the size of the kites that fly through the sky. Image | XinhuaNews Xataka | The immediate future of Airbus involved the green hydrogen aircraft. It’s not so safe anymore

Global reservoir water data are incredibly good. The reality of many areas is very different.

Few figures can move more to someone who has followed the day to day of drought in Spain than is: 43,144. Those are, on May 5, 2025, the HM3 in the country’s reservoirs. 76.99% of the total. In recent time, we have never seen anything the same. And yet the alarm signals. And I do not mean only the general reports. That also: the latest Copernicus report, the European land observation system, despite focusing on the situation of central Europe, Let it clear That the situation in Spain is terrible. It leaves no doubt: the vast majority of points in “alert” by drought of the European continent They are on the peninsula. But, as I say, the alerts not only come from obtuse community reports, they also come from the same hydrographic confederations that are prohibiting crops because, according to their calculations, the endowment of reservoirs is not enough. The Granada example. When the Guadalquivir Hydrographic Confederation (CHG) He announced The maximum endowments for irrigation for this year, “the worst omen were confirmed.” The accounts did not give, the regable areas of the province of Granada were going to continue with the greatest restrictions because their water reserves had not improved at the same level as in the rest of the basin. That is, the global figures and even the figures per Cuenca were not enough to know how the country was really: there are entire areas that, despite being part of water full of water, are not going to leave the drought behind. And what does this imply? Well, for example, farmers in La Vega de Granada who have sown winter crops will not be able to plant anything in summer. It is not a new measure, it was already implemented in 2023. The problem is that no one expected this and constitutes a blow to the rentier of a sector accustomed to using rotation to finance the following crops (as explained in ideal“The corn that is now paid expenses and income from winter crops”). That is, despite the water, many areas will have a bad time. Because no, it is not a problem that only affects Granada. A good part of southeast (regardless of the basin), the Balearic Islands or Some areas of the interior They will have water problems and will not be able to develop agricultural activities normally. To that we must add all the crops that go late Or they are Seeing how pests are primed with them. In the background, it is a reminder that the drought problems that have been accompanying us for 10 years cannot be diluted in two springs. As we have said many timesdroughts are managed with full swamps. It is now when you have to redouble efforts in infrastructure and management models. The restrictions may be necessary, but if we stay there … the most important step will be missing. Image | Kshithij Chandrashekar In Xataka | Spain has a huge problem with contaminated waters. These researchers believe that the solution is the poplars

Green hydrogen consumes huge amounts of water. A new incredibly simple invention allows you to use seawater

Green hydrogen is the missing piece in the puzzle of decarbonization. In a day like today, in which Spain It has produced 107.3% of the country’s energy demand From renewable sources, a greater storage capacity (batteries or pumping centrals and a more flexible demand is needed. Produce green hydrogen When electricity is very cheap It is the country’s commitment to take advantage of that surplus. There is a problem. While green hydrogen It occurs with solar or wind energy (That is why it is said that it is an energy vector that stores clean energy), the process to produce itwater electrolysis consumes huge amounts of fresh water, an increasingly scarce resource for billions of people in threatened regions For chronic drought. The obvious solution is to use seawaterthe most abundant resource on the planet. But of course, salt and impurities run the equipment and reduce the efficiency of the process. External desalination makers are needed, adding costs and energy consumption; or super -resistant electrolyzers, which are still under development. There is a third way. MIT researchers, Cornell University, Johns Hopkins University and Michigan State University joined forces to find an alternative that nicknamed the “triumph of sustainability.” The system, detailed in Energy & Environmental Scienceproduces green hydrogen directly from sea water. It does so using solar energy with impressive efficiency, and generating drinking water as a byproduct. How they have done it. Taking advantage of the entire solar spectrum. The central idea of ​​this new approach, officially called HSD-We (Hybrid Solar Distillion-Water Electrolysis), is to squeeze the maximum solar energy. We know that photovoltaic panels convert only part of sunlight into electricity (The most efficient are around 25% efficiency). The rest of the energy dissipates as a residual heat. What if that heat, instead of wasted, will be used for something useful? Eureka! Simpler than it seems. Like many other systems for the production of green hydrogen, the HSD-We integrates solar panels that turn light into electricity and an electroly of protons exchange membrane (PEM) that breaks down the water molecules into hydrogen and oxygen. The secret is at the rear of the solar panels, they are where the HSD-We has an interfacial thermal distiller coupled that uses the residual heat of photovoltaic cells to evaporate seawater. A simple membrane that absorbs salt water. It is a genius. The best thing is that it works. The electricity of the solar panels directly feeds the electrolyz. At the same time, the residual heat of the panel heats sea water in the interfacial distiller, evaporating it. This pure water vapor (already without salt) is transported by a small air space to the electrolyz, where it is directly condensed in the anode, adding ultra -patrol water for electrolysis. The prototype, tested by the MIT both in laboratory conditions, under simulated sunlight, and outdoors, on a partially sunny day, threw impressive figures. They achieved 35.9 liters of dry hydrogen per square meter of solar panel per hour, using real sea water. In terms of efficiency, The system turned 12.6%a comparable rate or even above current green hydrogen production technologies with drinking water. Cheap hydrogen finally? Beyond technical feat, preliminary economic analysis is also promising. Not depending on external supplies of electricity or purified water, the operating cost is minimal, so the price of hydrogen produced with this system could drastically fall with the scale. While conventional electrolysis fueled by the electricity grid and using drinking water It costs about 10 per kilothis HSD-We system, in exchange for a slightly larger initial investment, could reach 5 dollars per kilo after 3 years of operation and lower the kilo at 1 dollar in 15 years. A price that would undoubtedly change the rules of the game. Image | Nickelgreen In Xataka | Europe waste so much renewable energy that needs green hydrogen. And the country that leads it is Spain

Piri Reis drew in 1513 the most incredibly precise map in America. So much that it included regions still not discovered

The maps have been, They are being and will bea key piece in the history of mankind. The cartographers carry thousands of years profileing the land From our planet, a silhouette that has gone changing over the centuries and with Europe and Asia as the undisputed protagonists in cartography. However, from the 16th century, the obsession changed to the west: now we wanted to map America. 500 years before, Nordic explorers have already stepped on the American continent, reaching the coasts of what is now Canada and part of the United States and shaking your vision on a map. This Viking document perfectly reflects that ‘perfection’ of the European silhouette and the sketch, or La Mancha, which was the American continent. And, among all the incipient maps of America, the most intriguing may be that of Piri Reis. The reason is that It is very precise for its time And the author said he was based on lost maps, supposedly, drawn by Christopher Columbus. The mysterious Piri Reis map In the Era of the discoveriesExplorers such as Columbus, Magallanes or Vasco da Gama found their best ally on the maps. They helped cross the oceans, but as they did, they were capturing their vision of the ‘New World’ in maps to help in the planning of future expeditions. The map of Juan de la Costa of 1500 is considered the first that includes a representation of America. It has important accurate, but it is the only one made by a witness of the first two trips of Columbus and the terrestrial profile, unequivocally and despite errors, it is America. A few years later, in 1507, the Enigmatic map of Waldseemüllerin which the name “America” ​​was used for the first time. Again, there were errors in the profile of the Eastern coast of South America, but these two explorers were not the only ones who mapped the continent at this time. In 1513, the Ottoman Piri Reis not only mapped the same territory, but did it with a past accuracy and detailing territories that should not be there (because they had not been discovered). In this mapwe find the following: The east coast of South America to Argentine Patagonia. The Falkland Islands. Antarctica Here are several details that surprise and invite you to lift an eyebrow. Piri Reis was a admiral and cartographer who, from a young age, participated in several battles in the Mediterranean, cartographing the territory and its islands. However, in 1501, only nine years after the discovery of America, his uncle and captain Kemal Reis of the Ottoman fleet captured several Spanish ships near the Spanish coast. Questioning the crew and looting the ships, discovered that one of them had been in the New World during Columbus’s journey and had a map drawn by himself that represented the American profile. As he was not a cartographer, he took it to Piri to study it. Thus, the cartographer got to work and, having as a source That Map of Columbusother Portuguese maps and several cards, began in 1511 to design its map. He did it on gazelle skin and surprises that Piri, really, did not travel to the New World, but that he drew everything based on the sources that had gone to an expedition. As well as knowledge of Ptolemaic Mapamundis. The most controversial of the matter? To start, the Falklands. As many times throughout our history, the discovery of the islands has several boyfriends. Numerous maps after 1520 suggest that the Falklands were first sighted by Magallanes, but Portugal also wants merit and attributes it to Américo Vespucio’s trip of 1504. In the map of Waldseemüller the islands are already intuited, but it is in the Piri Reis that are represented in a much more faithful way to reality. Identified as ‘Il de Sare’, the islands have compared with the Malvinas, located east of the Magallanes Strait. The Horn of Argentina is more stretched than it should, also the Caribbean, but surprises how well represented the entire eastern area of ​​the continent is. Creatures … strange On the other hand, and the strangest thing is Antarctica. The first thing is that it is represented without ice, something impossible, since it has been covered by that white mantle. The second is that, officially, it was discovered in 1820. Apart from this, the cartographer made some descriptions of some of the areas and represented both animals and mythological creatures, something normal at the time. Chiripa and controversy For years, Piri Reis’s map was in the shadow. However, in 1929, a group of scholars had the commission of organizing the archives of the Topkapi Palace in Istanbul. The idea was to turn the palace into a museum, so you had to clean the basements and classify everything found. On a wall of the Ottoman Empire section, hidden and forgotten, the director of the national museums, Halid Edhem, found the map. Due to the mentions of Fuentes such as Cristóbal Columbus as it represented unknown details for the Ottomans of the early 16th century, the map was studied almost from the first moment. It is a Turkish national pride since 1933, but there is a problem: although it has extremely well represented areas, others, such as Stretched Caribbean Islands or the Union of Argentina with Antarcticaadded to the intrigue to know how an Ottoman who did not travel to a new world that, when the map was made, was in an extremely early phase of exploration, have raised controversy over the years. The most accepted theory about the map profile. There are those who say that Argentina’s horn is an error of the maps of the time, but also that having run out of space to draw would have motivated that elongated form Theories have been generated on the existence of ancient civilizations with advanced cartography abilities -controlled and without foundation. This may be because, although Piri cited reliable sources, he also referred to the “former kings of the sea.” … Read more

There is already an official plan for the next Starship flights. It’s incredibly ambitious, even for Spacex

While finalizing the eighth flight of Starship, Spacex has also closing the details of the ninth launch, which could happen shortly after with some of the most ambitious objectives so far. Eighth flight before expected. Elon Musk has confirmed that Starship Flight 8 is scheduled for this FridayFebruary 28. He has not made any mention, as usual, that the final date of the launch is subject to the regulatory approval of the government. If Spacex is confident that Starship will take off on Friday is because he hopes to receive the flight license reviewed by then. It is earlier than expected, taking into account that the Federal Aviation Administration of the United States has a Open research on flight 7in which the Starship ship exploded over the Atlantic Ocean, disintegrating near the Turkish and Caicos Islands and causing a small aerial chaos For the rain of metals that followed. First load deployment. In any case, flight 8 will repeat the objectives of the previous launch, using the Super Heavy Booster 15 and the ship 34 ship for the test, the second that incorporates the Block 2 improvement block. Two meters higher, the Starship Block 2 It has a greater capacity to store propelants and better performance perspectives in the atmospheric reentry, both for the design changes of its front spoilers and for the numerous improvements of its thermal shield. In addition to re -expending an engine in the exorbitant space, flight 8 will display load for the first time using the “fish dispenser” mechanism of Starship’s upper bay. These are 10 wooden models that simulate being next -generation Starlink satellites, larger than the Starlink V2 Mini than today the Falcon 9 rocket is able to launch in lots of 23. A ninth flight even more difficult. Although great news is not expected for flight 8 because Spacex still has to demonstrate the objectives that could not be met on flight 7 for the explosion of the ship, the next, the ninth, will mark a significant leap in the program. A Special permit application Sent by Spacex to the Federal Communications Commission, the agency that manages the United States radio spectrum, revealed two important things about the company’s plans: Starship flight 9 will occur between March 14 and June 30, 2025, as soon as two weeks after flight 8 Spacex not only hopes to capture the Super Heavy propeller with the arms of the launch tower, as he did on flight 5 and flight 7, he also wants to do the same with the Starship ship for the first time Double capture or double dip. Although there are not many details about the ninth flight, beyond the communications application for the double landing, Spacex has confirmed that he will use the same procedure he uses with the propeller: If everything goes well, he will try to land in the arms of the tower; But if something does not fit, it will cancel the landing and let the rocket fall into the ocean. Therefore, during flight 9 we could see, at best, the first double capture (Super Heavy and Starship ship returning, each in their time, to the launch tower) or, in the worst of the Cases, a double ameter with dip and self -control. It will undoubtedly be the riskiest flight to date: the first one in which the starship will reach orbital speed to return to the launch platform to the southeast of Texas, and the first in which the ship, which suffers much higher temperatures than The propeller on his return could test the capture maneuver with the tower arm as a landing method. The most surprising thing about everything? Which could happen in mid -March. Image | The Super Heavy Booster 14 and the Starship 33 In Xataka | “Souls on board, 283”: an Iberia plane had to declare emergency to land after the starship explosion

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.