decades

Three decades of innovation in lithium batteries and a 99% drop in price, in an illuminating graph

by

The world has been immersed for years in two essential transitions to leave fossil fuels behind: energy and mobility. But for both to be possible, it is an essential requirement that a technology continue to improve and also drop in price: that of batteries, one of the main components of electric cars and the one responsible for storing excess energy in times of energy surpluses, for example in wind and solar energy. And in fact, this is what he has done: In the last 35 years the price of lithium batteries has plummeted 99%. In 1991, a lithium ion battery cost $9,210 per kWh (in constant 2024 dollars). In 2023, that same kilowatt-hour cost $111: we are talking about a drop of almost 99% in almost three decades. To make it tangible, Hannah Ritchie and Pablo Rosado of Our World in Data gives an example applied to car batteries: the battery of a current standard electric car with a range of 350 to 400 kilometers today costs about $5,000. A decade ago the same component would have cost more than $20,000. In 1991, almost $600,000. There is a strategic threshold that we have surpassed recently: 100 dollars/hWh, considered historically the point of economic parity with the internal combustion vehicle, but At the end of 2025 we will already overcome the barrier reaching 84 dollars/kWh. First of all, let’s start with the presentations: the graphics are from Our World in Dataa project of the Global Change Data Lab linked to the University of Oxford. And the primary source is a data series updated by Rupert Way, built on the original work by Ziegler and Trancik and completed with data from BloombergNEF and Avicenne Energy. All data is expressed in constant 2024 dollars. The price of lithium batteries has fallen 99% in 35 years The first graph shows the evolution of the price of lithium ion cells between 1991 and 2024, in constant 2024 dollars per kWh on a logarithmic axis. The line declines continuously and sharply throughout the series of years without any signs of stabilization until ending around $50-60/kWh in 2024. Evolution of the price of lithium ion batteries: 1991 – 2024. Our World in Data The second graph combines price with global accumulated production and uses a double logarithmic scale: it starts from an installed capacity of 130 kWh in 1991 and reaches 3,510 GWh in 2023. That the line remains straight for more than three decades, in two different graphs and with data from different sources, confirms that The price drop is not a coincidence or a streak. It is a stable mathematical pattern that allows you to project where prices will go. This trend is more important than the fall itself. Every time global cumulative production doubles, battery prices have fallen by 19%. Our World in Data This second chart shows that every time global cumulative lithium-ion battery production doubled, the price fell by 19%. That is the learning rate known as Wright’s Law. The learning curve remains stable for more than thirty years, regardless of financial crises, supply problems and even a pandemic. Behind that graph is that enormous jump from the 130 kWh installed in 1991 to 3,510 GWh in 2023. That is 27 million times more capacity in three decades and each doubling along the way led to a 19% reduction in price. With the current rate of installation, these duplications occur in less and less time, which implies that the curve is not going to slow down due to inertia. These graphs do not describe the past: they are a projection of the future. A stable learning rate of 19% per capacity doubling is a planning tool: it helps the industry and its actors to reliably estimate when storage will reach cost thresholds that make the electricity grid viable with high renewable penetration. According to IRENAthe cost of solar energy fell by 90% between 2010 and 2023 following the same logic. That the threshold has fallen below $100/kWh already has consequences: the European Commission estimates that the EU will need between 200 and 600 GWh of storage by 2030 and precisely this trajectory means that Europe will get the bills for its energy transition. However, we cannot lose sight of the fact that the graphs show the average cell price of the different types of lithium ion batteries, which have very different profiles of cost, life cycles or energy density. That doesn’t appear on the graph. Nor that battery cost is not everythingsince it has associated costs, such as installation or replacement. Likewise, it does not touch on the structural risks of the supply chain: lithium, cobalt or nickel are geographically concentrated and vulnerable to geopolitical tensions, such as warns the International Energy Agency. And although they are becoming cheaper, their weight and volume are still a handicap for some scenarios such as aviation or heavy trucks. In Xataka | The last piece of the renewable puzzle now fits: the price of storage batteries has reached its minimum In Xataka | China dominates the world of renewable energy, but it has an Achilles heel: it depends on the West more than it admits Cover | Our World in data

We have been thinking about a single path to Mars for decades. A group of scientists has just found a “shortcut”

by

If you travel to the Moon It’s quite a challengethe next step is only for the brave. To date, no one has traveled to Mars and even unmanned trips encounter multiple drawbacks. The first of them is the duration of the trip itself, since it can extend up to 8.5 months, one way. Almost nine months of space route, with all the inconveniences that may arise during it. That is why the shortcut that a team of scientists from the State University of Rio Janeiro has just proposed is so interesting. With it, the trip could be shortened to 153 days, round trip. The key is in the asteroids. The authors of this study They have looked for shortcuts on the route to Mars in a quite interesting way: by noticing other travelers. After studying the trajectories of several asteroids, they have focused on those whose orbit intersects both that of Mars and that of Earth. Until now, the trajectories are designed from the Earth’s orbital plane. If the orbital plane of one of these asteroids, specifically 2001 CA21, is also taken into account, new paths are opened, which were hidden from our planet. One of those paths, according to the study, would drastically reduce the duration of trips to Mars. The asteroid is not a vehicle. It is important to note that this study does not propose using asteroids as a vehicle to Mars. They simply use them to open horizons to other trajectories. We from Earth see only a few “roads”, but asteroids like this have other options. By looking for connection points between the Earth’s orbital plane and that of these asteroids, it can be linked to these other routes, some of which turn out to be more direct. Traditional tours. Normally, to travel from Earth to Mars something known as the Hohmann trajectory is used. This consists of beginning to make a turn around the Sun in our own elliptical orbit; to, when the time comes, take advantage of its gravitational pull and extend the ellipse to the Martian orbit. Broadly speaking, the ship does not go in a straight line to where the destination planet is, but rather travels to where it will be at a given time. It is not a short trip, but with it, by taking advantage of the gravitational pull, fuel consumption is greatly reduced. Planned trajectory for ESA’s ExoMars For this to be carried out, launch windows must be taken advantage of in which the Earth, the Sun and Mars are properly aligned. All this lengthens trips a lot. A change of plane. The orbits of the different objects that revolve around each other are not all in the same plane. Each one has its own plan. Like a sheet of paper that is spinning. The Earth’s plane is not exactly the same as that of Marsbut very similar. That of the asteroid in this study, however, is very different and is much more inclined. That is why it allows us to open the window to new trajectories. As explained in Wired, It is something like opening a secondary window in a video game to see a scenario that we do not see in the main one. Multiple launch windows. Taking into account the need to have a proper alignment between the Earth, the Sun and Mars, there are soon three interesting launch windows to travel to the red planet: 2027, 2029 and 2031. By studying them one by one, the authors of this study saw that it is in 2031 when the best alignment with the plane of the asteroid occurs and, therefore, a much faster opportunity for travel. In the best case, Mars could be reached in 33 days. The complete trip would be 153 days, although in less optimistic cases it could be 226 days. Be that as it may, it is still much less than those 9 months, one way, that it takes now. Other asteroids. Although the study has been carried out with specific data from a single asteroid, these scientists believe that, in reality, the orbital planes of others could be taken whose trajectories also intersect with Earth and Mars. Basically, the key is to look outside the box. Or, much more literally, out of shot. There are many interesting routes out there. More powerful propulsion systems. All this sounds beautiful, but there is a big drawback that we must take into account. And, in order to carry out this process, much more energy is needed. Therefore, it would be necessary to resort to practically unfeasible quantities of fuel or to new, more powerful propulsion systems. Today this is not possible, so advances in this regard should go in parallel with the development of advances in propulsion systems. Many examples are already being investigated, such as the use of nuclear energy. Even has been proposed use lasers, although it is a project that is very much in its infancy. There is still a long way to go, never better said, but if the future is in these short and alternative trajectories it must also be in new propulsion systems that leave traditional ones behind. Image | NASA | THAT In Xataka | ExoMars, this is Europe’s most ambitious mission to Mars

For decades we believed that extreme nausea during pregnancy was caused by “hormones.” A large study found the real culprit

by

The beginning of pregnancy for many is associated with horrible nausea and vomiting that have become almost an inevitable and deeply annoying toll in pregnancy and that many women fear. And the reality is that, for a percentage of these women, nausea becomes a big problem and evolves into a very serious form called hyperemesis gravidarum. What was believed. At first, the most classic reviews They pointed squarely at the ‘hormonal dance’ that pregnant women experience while the placenta is forming. Here the peaks of human chorionic gonadotropin (which is the hormone that pregnancy tests detect), along with estrogens and progesterone, were the main responsible for this discomfort. However, in clinical practice, the exact cause remained uncertain, since it was not understood why some women only felt mild morning sickness and others ended up hospitalized due to the severe dehydration caused by vomiting. And the answer was in the DNA. A great study. Here science has dotted the i’s with an article published in Nature which has analyzed the data of almost 11,000 cases of hyperemesis gravidarum and contrasted it with more than 420,000 women who did not have this problem. The result. He targeted ten genes associated with this severe form of extreme nausea, but among all of them the GDF15 gene emerged as the main culprit. And here the different experts point out that the developing fetus and the placenta produce the hormone GDF15, which is produced from the gene that we mentioned before and sends it directly to the blood, causing this nausea. Although the key is not just how much hormone is produced, but the degree of prior exposure the mother had to this hormone before pregnancy. In this way, women who had low levels of GDF15 before becoming pregnant turn out to be much more sensitive to the sudden surge of this hormone from the fetus, which triggers the most severe symptoms of nausea and vomiting. A discovery with evidence. Despite the forcefulness that accompanies this evidence, the study suggests that the gene GDF15 It is the main cause, but not the only one. The fact that there are other genes involved demonstrates that hyperemesis gravidarum is a multifactorial condition so calling it the “sole cause” would be scientifically inaccurate, but classifying it as the most determining genetic factor is, today, a fact supported by the best peer-reviewed literature. What does it mean? Identifying GDF15 as the main biological switch of this problem is undoubtedly the first step to be able to apply a treatment that can help these future mothers who suffer from significant vomiting during pregnancy, and especially in the first trimester. Although it is true that this does not explain many other symptoms of pregnancy, such as heartburn or that some things begin to feel bad ‘just because’. Although there is still a lot of research ahead to discover them. Images | tirachardz on Freepik In Xataka | We have been sending pregnant women to bed for decades as a precaution. Science has just proven that it is a big mistake

two decades of success with the most stable audiences on television

by

The same week in April 2006 that La Sexta premiered broadcasts, ‘El Intermedio’ began its career as one of the channel’s flagship programs and Antena 3 launched the current stage of ‘La roulette de laluck’. Two decades later, both programs celebrate their anniversary (one with special panels, the other with Pedro Sánchez wearing borrowed suspenders) and stand out as true anomalies on a grid in eternal motion. The luck of roulette. ‘The roulette of luck’, a word guessing contest broadcast at two in the afternoon, manages to almost double the share of its own network. In the 2025-2026 season The program presented by Jorge Fernández registers a 21.6% screen share, with an average of 1,564,000 viewers and more than 3.1 million unique viewers. Antena 3, as a network, has averaged 12.4% of share. Its main rivals in that range, ‘Mañaneros 360’, is around 12%, and ‘El Precio Justo’ is timidly approaching 9%. It is not punctual: the format has four consecutive years above 20% and maintains a uninterrupted monthly leadership since May 2020. Poor beginnings. When the current stage of the contest started in 2006, it returned to the small screen with a 26.9% share and 1,318,000 viewers: promising figures that deteriorated in the following years. However, its number of viewers skyrocketed when it began to occupy the 2:00 p.m. to 3:00 p.m. slot that ‘The Simpsons’ had until then had, where television consumption is significantly higher. Curiously, ‘La roulette’ has seen its viewer base decrease since the 2020/2021 season, but the share has gone up. The explanation is that linear television as a whole loses audience, but ‘La roulette’ loses it less than its rivals. Not just business days. The robustness of the format also extends to weekends. Since 2020, Antena 3 has been broadcasting reruns of the contest on Saturdays and Sundays, and the program also leads in that slot: in the current season it reaches a 17.8% share and 1,258,000 viewers. All for a proposal that, born in the United States, has had some 60 international versions since 1975, and that arrived in Spain in 1990 with the birth of Antena 3, living a brief stage in Telecinco between 1993 and 1997 and a subsequent hiatus until Jorge Fernández took over the baton in his current stage. The ‘El Intermedio’ case. The satirical news program draws a different, but equally striking curve. In 2026, it averages about 848,000 viewers and reaches between 6% and 7% share (common data in the modest Access Prime Time of La Sexta). All this with specific increases such as the 20th anniversary special broadcast last Thursday, April 16, with which it scored its best quota since February 2022 (10.2%), in an unusually long delivery of more than two hours, and which brought together active politicians (several ministers, Gabriel Rufián or Pedro Sánchez himself) and musicians such as Kiko Veneno, Ana Belén and Víctor Manuel. A complicated hour. ‘El Intermedio’, unlike ‘La roulette’, has never moved from its original space, perhaps the most hostile strip of the entire schedule: the moment in which the viewer chooses where to spend the night. It has ‘El Hormiguero’ on Antena 3 and ‘La Revuelta’ on La 1 as its last direct competitors, but Wyoming has been resisting for two decades. According to a analysis of Barlovento Comunicaciónin 2012 La Sexta designed a strategic positioning of “vertical programming” focused on political and social news. The programs created then (‘The Intermediate’, ‘Al Rojo Vivo’, ‘Better Late’ or ‘Saved’) had the objective of providing street-level information about current events. The Atresmedia umbrella. The two programs share something more than the year of birth: both are from Atresmedia, and both operate in time slots where at least part of the competition cannot find alternatives. In the case of ‘El Intermedio’, the Wyoning program has seen in these twenty years how ‘El Hormiguero’ went from competitor to ally‘First Dates’ on Cuatro took shape as a more stable competitor during the last decade and finally, ‘La revuelta’ appeared, which notably politicized the strip. The numbers. Atresmedia closed 2025 with revenue of 1,002 million euros and maintained its hegemony on television for the fourth consecutive year, with a screen share of 26.1% and a historical advantage of 1.7 points about Mediaset. Antena 3 was once again the most watched channel of the year. These two anniversaries are indicators that the strategy of cheap programs, with rigid structures and a loyal audience continues to be profitable. ‘La roulette’ produces five days a week with a small team and ‘El Intermedio’ works with daily news as raw material, which reduces content development costs. And two decades of holding on. In Xataka | The “audience war” with ‘La Revuelta’ has been very good for ‘El Hormiguero’. Eight million euros of good

The Congo River has been an insurmountable barrier for the two closest capitals in the world for decades. Until now

by

For decades, the Republic of the Congo and the Democratic Republic of the Congo (DRC) have been living in a peculiar situation: although they have the nearest capitals at the geographical level of the entire planet (with the exception of the Vatican and some cases special, like Nicosia), both metropolises live behind each other’s backs. At least as far as communications are concerned. Today to travel from Kinshasa (RCD) to Brazzaville (Congo) you need get on a ferry to cross the river that separates both countries or even a plane which covers the journey as long as it takes you to have a coffee and read the headlines in the newspaper. Now that’s about to change. Capitals just a stone’s throw away. The story of the Republic of the Congo and the Democratic Republic of the Congo (the former Zaire) has been anything but quiet. This has ultimately contributed to both nations sharing a particular condition, beyond the similarities between their names: their capitals are a stone’s throw away. Between Brazzaville (RC) and Kinshasa (DRC) there are a handful of hundreds of meters and a river, the Congo. Depending on the reference we take, between both metropolises there is between one and three kilometers in a straight line. If we except the even more peculiar relationship between the Vatican and Rome (and some curiosities historical), Brazzaville and Kinshasa are often considered the closest capitals. However, despite this proximity, those who want to travel from one city to another right now do not have it easy: they must take a ferry that covers the journey in half an hour or even (if they are in a hurry… and more money), fly over the limited airspace that separates both capitals. What if we build a bridge? The situation is sufficiently anomalous that the authorities have considered on several occasions building a bridge between both banks. The idea can date back at least to the 90s and has been rescued several times since then. Without much success. Whether for political or budgetary reasons or simply because the fear As infrastructure reduces commercial traffic in some influential ports in the DRC, the Kinshasa-Brazzaville viaduct has failed to make it past paper. Coming out of the box. That could change soon. In February the finance ministers of the DRC and the CR reached a bilateral agreement to establish a special tax regime that clears the future of the construction of the viaduct. It may seem like a minor issue, but the infrastructure is expected to be subject to a toll and, beyond the traffic of individuals and tourists, every year moves trucks loaded with thousands and thousands of tons of merchandise. “We have a harmonized tax and customs framework. We also have a bilateral pact, which will allow us to relaunch the call for tenders,” celebrated after the technical meetings Caddy Ndala, from the Brazzaville delegation. An agreement… and something more. If the bridge seems to see (finally) the light at the end of the tunnel, it is not only because of the tax agreement between both countries. The project has also attracted the attention of Africa50an investment platform founded by the African Development Bank (ADB) and African states. The entity is presented in fact as the “main promoter” selected by the DRC and RC to drive the public-private partnership that will shape the infrastructure. Global Highways precise that part of the investment to shape the viaduct will also come from the ADB, which has already financed the feasibility studies. And what will the viaduct be like? The main infrastructure will consist of a short bridge more than 1.5 km which will pass over the Congo River and allow the passage of vehicles and railways. It will also have sidewalks and border control posts. The idea is that the viaduct connects further with the roads that already exist in both countries, facilitating communication between the capitals. “The idea dates back to the mid-19th century,” recognized years ago the president of the ADB, Akinwumi Adesina. To clear its roads, the technicians have selected the narrowest point on the border. In an attempt to put an end to the misgivings that the infrastructure arouses in several commercial ports in the region, it has also been agreed to carry out complementary works of improvements in them. Hunting for goods. The bridge won’t exactly come cheap. In 2017, the ADB estimated that the project would require 550 million dollars, an estimate that has since risen to exceed 700 million. In return, the structure promises to completely change the relationship between both capitals. In 2020 the Africa Investment Forum pointed out that the forecasts involve both triggering the flow of people and goods: the former (people) would go from 750,000 annually now to more than three million; As for the latter (merchandise), it would rise from 340,000 to two million tons. Images | Google Earth and Africa50 In Xataka | A 2.5 billion-year-old geological wonder: Zimbabwe’s Great Dam seen by NASA from space

We have been terrified of superbugs for decades. The real silent danger is “superfungi”

by

When we talk about the antibiotic resistancemany people are already aware of the great problem that not having medications against superbacteria poses for public health, since today there are many antibiotics that have no effect on bacteria. But the WHO launch an alert very important to expand our field of vision also to the “super mushrooms“. Growing danger. If there is a protagonist in this new threat, it is Candida auris, precisely because, unlike other fungi that have been with us for centuries, this one has recently emerged as a global public health problem by causing serious infections, especially in people who are admitted to hospitals or nursing homes, who already have other associated diseases. A genomic macro-study in which the Carlos III Health Institute has participated analyzing more than 300 isolates from patients in 19 countries, has drawn the map of the evolution of this multi-resistant fungus. And the reality we face is that it is capable of spreading rapidly among fragile patients, and worst of all, it is very resistant to the anti-fungal drugs that we use on a daily basis. It is very complete. As experts point out, the enormous expansion of C. Auris is not only focused on the ability to evade the first-line antifungals that we have, but also on its ability to form biofilms on hospital surfaces or medical devices. This causes an object used by several patients to become ‘infected’ and spread the infection among them. It was suddenly. The reality is that today there are many fungi from the Candida family that coexist with us by being on our skin naturally, and without causing problems. The trigger comes when our defenses fall because we are sick, immunosuppressed due to a transplant or naturally because we are older. And this is where this fungus goes from being a being that lives with us ‘in peace’ to completely invading us and causing disease. The culprit. Paradoxically, our efforts to kill bacteria have part of the blamesince here the experts point to a structural problem of abuse of broad-spectrum antibiotics that “sweeps away” the natural bacterial flora of our body. In this way, if bacteria that colonize our digestive system are destroyed, for example, it creates free ‘holes’ that can be used by fungi without control. Added to this is a serious pharmacological problem, since right now we do not have many medications to fight fungi. And the problem is that its structure is quite similar to the surfaces of our own cells as it contains cholesterol in many cases. This means that drugs that destroy the fungus without producing a toxic effect on the patient are not very abundant. There is more. Although we focus on C. auris, there are other threats in this same kingdom, such as Scedosporium prolificansa multiresistant fungus that, through unique evasion mechanisms, causes very high mortality rates in immunosuppressed patients. The solution. Right now, science indicates that we cannot address the crisis of superfungi and superbacteria with patches, but rather we must create a unitary strategy that encompasses human, animal and ecosystem health. And right now the massive use of fungicides in agriculture causes the fungi in the environment to resist our medications that we use in the most serious patients. Images | Adrian Lange In Xataka | Faced with the need to look for weapons against superbacteria, science has opted to send viruses into space

For decades, the “Galicia” octopus has been the greatest guarantee of quality. The United Kingdom wants to take it away

by

The Galician octopus may be the most famous, but for some time now, talking about the most precious cephalopod in the country’s gastronomy requires looking beyond the Rías Baixas. In fact, it forces us to take a leap of hundreds of kilometers and look at the other side of the English Channel, on the southern coast of the United Kingdom. There the English fishermen have encountered a curious octopus invasion which at first they viewed with suspicion (they have been dedicated to capturing other species for generations), but each time it awakens greater interest in London. The question is how can it affect that to Galicia, a land that has turned octopus into a ‘religion’ (in addition to a big business) and that in recent years has encountered the opposite panorama: a fall in the capture of cephalopods. What has happened? That the octopus map is changing. And although we still don’t know for sure how deep (and stable) that transformation will be, it has been clear enough to generate expectation in Galicia, a land closely linked to the cephalopod from a cultural and economic point of view. To understand it, we have to go back to 2025, when fishermen who fish on the southern coasts of the United Kingdom encountered an unexpected picture: in the pots that have been installed for generations to hunt crabs and lobsters, they began to appear empty shells…a clue to the presence of octopuses. Click on the image to go to the tweet. Why is it so strange? Because the ports in the north of the peninsula are used to large unloadings of octopus, but things change when we talk about Newlyn or Brixham, in England. There the boats that go out to fish hope to collect sole, turbot, crabs or lobsters. A few months ago, however, the fishermen encountered an unexpected (and apparently inexplicable) invasion of Octopus vulgariscephalopods that usually live in the Mediterranean or other areas of the Atlantic, such as the Galician coast. It was not a one-off boom. Nor something anecdotal. The phenomenon was so surprising that it even caught the attention of Stephen Castle, a reporter for The New York Timeswho in September traveled to Brixham to talk to sailors and operators. In a chronicle about what he saw there, he talks about fishermen ecstatic to see how their turnover skyrocketed thanks to new catches, auctions of tons of merchandise and veterans of the sector recognizing that it was the first time they had captured the species in their waters in more than 40 years. This is good news, right? Depends. Castle chatted with fishermen who rub their hands when they see the tentacles wriggling in their nets, but also with others who frustratedly tell how octopuses boycott the pots with which they capture shellfish. They are not the only ones who are not enthusiastic about the new plague. “I recently visited the fishing industry in Plummouth and was informed that there was an unusual abundance of octopuses in the south west. The Ministry of Environment and Food understands that the proliferation is affecting shellfish pot fishing and causing concern in the fishing sector in the area,” warned in May last year the Labor MP Daniel Zeichner. And why not take advantage of it? That is the question that the British authorities seem to have asked themselves, who have decided that the cephalopod invasion may be something more: an opportunity. At the beginning of the year Vigo Lighthouse revealed who in London want to promote a formal, regulated and industrial fishery of the octopus vulgaris. In short: make a virtue of necessity and equip yourself with a strategy to gain a foothold in a market that moves billions of euros. Proof that the United Kingdom they are very serious with the octopus is that the Marine Biological Association (MBA) and the Marine Management Organization (MMO), two departments linked to the Government, “are considering how best to collaborate with the EU to learn from existing octopus fisheries.” a few days ago The Voice of Galicia even reported that the country is already looking at the markets of the rest of Europe and Morocco. It makes sense if we take into account that the change on the English coast, with an octopus boom that in turn reduces the population of other traditional species, already affected to the Christmas campaign. Do they have that many octopuses? Yes. In September, after speaking with the manager of a market, Castle talked about the sale of up to 48 tons of octopus in a single day. Official MMO data shows that last year a total of about 1,900 tons of octopus, especially in Brixham and Dartmouth. It is an exceptional fact. First, because it exponentially multiplies the discrete cephalopod capture data recorded so far. Second, because it surpasses the 1,200 t handled in the markets of Galicia. There is sources which indicate that total sales in the UK markets would be much higher. Data from the Xunta on the sale (blue) and price (yellow) of octopus in the markets of Galicia. Is it something new? Yes. And no. It is not the first time that English fishermen have found octopuses wrapped in their nets and pots. Vigo Lighthouse remember that in Devon and Cornwall sailors already encountered similar situations in the late 19th and mid-20th centuries, when the regional press came to speak of “a perfect plague” of “disgusting beasts” that “almost ruined” the sector. On this occasion there are signs that suggest that it will not be something temporary. Experts such as Seteve Simpson, from the University of Bristol, slide that climate change is “a likely factor” in explaining the increase in octopuses in southern England. “Our waters are warming, so our little island of Britain is becoming increasingly favorable for octopus populations,” he theorizes. There are clues that suggest he is not wrong. In Plymouth there are fishermen who recognize that they not only encounter adult specimens when fishing. They also see … Read more

For decades we have been told that seafood does not feel pain when boiled. We were seriously wrong

by

An action that can be quite common in the world of gastronomy and cooking in general is that of literally boil the lobsters and the crabs while they are alive. Something that was quite accepted, since it was thought that these animals were not aware that they were being boiled and did not even feel pain. But this is changing radically, although it does not transfer to kitchens. What we knew. This idea that the animals did not suffer any type of pain is something that could be doubted (a lot), since when you put them in a pot of boiling water they begin to have great shakes. But this is something that was pointed out as a mere reflex, but that did not have any type of awareness of the pain. A new study. A team from the University of Gothenburg has pointed out that this is not the caseand they have done so by focusing on Norwegian crayfish or lobsters. And to demonstrate that this is so, they have simply given him analgesics that humans take, such as aspirin (although it is no longer as prevalent due to its analgesia) and even local anesthetics such as lidocaine that is used in humans, for example, when they are going to give stitches to a wound. In this way, once the lobsters were anesthetized, they were placed in boiling water again and their movements, which were supposedly a reflex, were seen to be drastically reduced. What does it mean? Here logic tells us that if the animal’s behavior were a simple reaction due to the stimulation of a nerve, an analgesic should not affect it and would have to be generated in the same way. But the fact that drugs that block our own pain also work in crayfish suggests that there is more than a simple reflection when it comes to putting them in the boiling water, but they are really suffering. The ethical problem. The fact that it was thought that a crustacean with these characteristics could not be aware of pain was based on the fact that they have a very simple nervous system, so boiling them alive had no influence on animal well-being. But now researchers call for reflection and reopen the debate about whether we really should continue recommending this type of practices within the culinary world. This is not the first time this has been seen, since other studies analyzed the crabs through electric shocks given to them when they passed through a specific area. In this way, the crabs learned that they should not go through the area that gave them an electric shock, demonstrating that they did have awareness of this unpleasant experience and also memory. Now, with evidence of response to painkillers, the lobster’s “insensitivity” argument appears to have its days numbered. The legislation. Today, in many countries it is not considered that these practices are prohibited, as it is punishable, for example, to physically harm a dog or a cat. But the truth is that in some countries they are trying to adapt to the new reality, such as the United Kingdom, which recognizes lobsters, crabs and octopuses as sentient beings. Besides, in New Zealand This includes a requirement that animals going through the pot be declared desensitized through techniques such as extreme cooling or electrical stunning, to prevent them from being alive and conscious before being cooked. But the problem is that in much of the world it is still completely legal to cook them alive. Images | Monika Borys In Xataka | Batch cooking is taking off for a very simple reason: if you want to eat well, you can’t trust yourself.

We have been searching for a cure for HIV for decades. The tenth cured patient in the world gives us a starting point

by

Receiving an HIV diagnosis several decades ago was practically a death sentence for many patients who saw that there was no possible treatment to eradicate this virus and that sooner or later would develop the disease. But little by little, treatments for prophylaxisof attenuation, reaching an undetectable viral load, and now we are seeing the first cases of complete eradication. There are several cases. We are facing a new historical milestone in medicine, and it is no wonder, since an international consortium of researchers has documented the tenth case in the world of a person who has managed to be cured of HIV, or rather, who has managed to eliminate the virus from their body so as not to develop the disease. The latter is known as the ‘Oslo patient’. A 62-year-old man who has not taken antiretroviral treatment for four years and has no trace of the virus, which has led to a published article in Nature where a great research process is recounted, something that has been possible thanks to the work of the international consortium IciStem 2.0, led by the Oslo University Hospital and with a fundamental participation of Spanish science through the center IrsiCaixa. His story. The clinical history of the ‘Oslo patient’ follows a pattern that is increasingly familiar to scientists, similar to that of the famous ‘Berlin patient’ in 2009. Diagnosed with HIV at the age of 44, the patient developed severe hematological cancer in 2020, for which he had to receive a stem cell transplant with the aim of regaining normal blood cell genesis. But here the key to success was that the donor of these stem cells was his own brother, who had a rare and coveted genetic alteration known as the CCR5-delta32 mutation. Because. When we see the term ‘mutation’ we automatically go to the negative meaning and all the diseases that having a mutation in the DNA can cause. But the reality here is that the CCR5-delta32 mutation acts as a cellular “shield” by modifying the receptors of a type of defense cell, T lymphocytes, so that HIV be unable to anchor to them and infect them causing its destruction. In this way, by replacing the patient’s immune system with his brother’s cells, doctors not only treated the cancer, but “rebooted” their defenses, making them immune to the virus. From here, HIV could not access its defensive cells, which is the mechanism it uses to become chronic and become ‘undetectable’ to the immune system. What happened next? As the researchers report, two years after performing the transplant, the medical team decided to withdraw antiretroviral therapy under strict monitoring, since it is a truly critical moment for patients. From here, and several analyzes later, it was seen that there was no sign that the virus was multiplying again. In the end, viral DNA was not detected either in peripheral blood tests or in biopsies of intestinal tissue, which usually acts as a “reservoir” where the virus hides. And this is where the Spanish group, through IrsiCaixa, has had a lot to say, since its research teams are currently monitoring 40 participants in similar conditions. What does it mean? Although it seems that we have achieved the definitive cure, the reality is that this is not the case. Right now we must understand that hematopoietic stem cell transplantation is a very high-risk and extremely clinically aggressive procedure that initially leaves the patient without any defenses and then they trust that the transplant will work and they will not reject it. All of this makes its mortality rate very high, so it is only ethically and medically justified in patients suffering from a potentially fatal blood cancer, not as a standard therapy for people living with HIV, who today can lead a normal and healthy life thanks to daily antiretroviral treatments. It’s the way. Although it is not the definitive therapy, it does open the way to developing genetic therapies such as CRISPR or cellular treatments such as therapies CAR-T that manage to imitate this immunity in the patient’s own body in a safe, scalable way and without the need to undergo a transplant from an external donor. Although to get here there is still a long way to go for science. Images | National Institute of Allergy In Xataka | The HIV epidemic never left Africa. Now a new treatment wants to make a difference

We have been looking for decades to reduce diesel pollution. The answer was in the water

by

In slow progress, but with increasing momentum, new energy vehicles continue to gain ground in Europe. However, the vehicle fleet It is still plagued by diesel enginesespecially because beyond passenger cars, they continue to dominate freight transportation, agriculture and industry. Because? Well, because at the end of the day they are robust, efficient and very reliable. But they are also one of the main sources of air pollution. However, there are numerous projects and studies that seek to make diesel a much less polluting fuel. In this regard, a team of researchers from Nigeria has given it a twist to an already known technology that, well applied, can change that equation without having to redesign the engine. What is WiDE technology. Its acronym in English stands for Water-in-Diesel Emulsion, or water-diesel emulsion. The idea is to mix small amounts of water with the diesel using substances called surfactants, which act as stabilizers and keep the mixture homogeneous for up to 60 days. The result is a fuel that, on the outside, barely differs from conventional diesel but that behaves very differently inside the engine. How it works inside the cylinder. When this mixture burns in the combustion chamber, the water droplets vaporize instantly and violently. This phenomenon is called “microexplosion” and has a direct and positive effect: it atomizes the fuel into much finer particles, which improves the mixture with the air. More efficient combustion at lower peak temperatures directly translates into fewer nitrogen oxides (NOx) and less soot. Numbers. The study, carried out by researchers from the Federal University of Technology of Owerri (Nigeria) and published at Carbon Research, analyzed the results of this solution in studies around the world. After this, they detected that engines that operate with WiDE can reduce nitrogen oxide emissions by up to 67% and suspended particles by up to 68% compared to conventional diesel. In addition, several experiments also pointed to an improvement in the thermal efficiency of the engine. Because matters. Current emissions control systems, such as particulate filters or SCR catalysts, work, but add cost and mechanical complexity. WiDE, on the other hand, acts directly on combustion and does not require modifying the engine. According to the main researcher of the study, Dr Chukwuemeka Fortunatus Nnadozie, is “a practical and cost-effective way to clean diesel engines” that opens “an immediate path to lower emissions in both developing and developed countries.” The key: surfactants. It’s not all about mixing water and diesel. The stability of the emulsion depends largely on the type and amount of surfactant used. The investigation concludes that formulations that combine several surfactants offer the best results, both in fuel stability and combustion quality. On the other hand, if this component is chosen incorrectly it can compromise both the performance and security of the system. What remains to be resolved. The authors themselves acknowledge that the technology needs more research before mass adoption. Optimal surfactant formulations remain to be defined and the long-term effect on internal engine components needs to be evaluated. The study’s co-author, Professor Emeka Emmanuel Oguzie, point which, “with proper formulation and testing, could become an important part of sustainable transport and industrial systems.” An intermediate solution. WiDE is not proposed as a substitute for electrification or renewable energies, but as an intermediate solution. The authors describe it as a bridge between the current use of diesel and a cleaner energy model, and point out that it could combine with biodiesel and other emissions control systems to enhance their effects. In Xataka | With gasoline at 2 euros per liter in France, something is happening in Guipúzcoa: French people crossing the border with jerrycans

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.