Scientists

Western scientists have been debating the origin of Kamo’oalewa for years. China went looking for him

by

If everything goes according to schedule, the Chinese Tianwen-2 mission will be about to arrive at Kamo’oalewa, the co-orbital object on Earth to which it is heading to discern once and for all whether it is an asteroid or a lunar fragment. Actually this It is not the only coorbital on our planet. There are other objects that take exactly the same time as us to go around the Sun, so they can be said to be our traveling companions. However. z Kamo’oalewa has been one of the best characterized since it was discovered in 2016. Since then, European and American scientists have been striving to find out its origin, leaving the balance more tilted on some occasions towards the lunar fragment and on others towards the asteroid. But it is clear that to have a definitive answer we need to analyze samples of its surface. In order to obtain them, China jumped to the rescue. A mission to answer once and for all. The Tianwen-2 mission was launched in May 2025 bound for Kamo’oalewa. In the next few days it should reach the satellite, to start taking samples next month. The samples will later make the return journey and land on our planet in 2027 so that scientists at the Chinese Academy of Sciences can investigate them. Then we will finally know where our traveling companion comes from. Two hypotheses, many changes of opinion. Kamo’oalewa was first observed in April 2016, thanks to the Pan-STARRS telescope at the Haleakala Observatory in Hawaii. That same year, a team of European scientists made his first characterization. Thanks to them we had very specific information about this object. For example, its orbit was calculated and its thermal inertia was analyzed. That is, the speed with which its surface responds to changes in temperature. After that characterization, further investigations were carried out at the Arizona Planetary Science Institute. From those analyzes two hypotheses emerged for its origin: it could be an asteroid that escaped from the asteroid belt or a fragment of the Moon that jumped from there due to a large impact. This last hypothesis arose from spectroscopic observations made with the Large Binocular Telescope (LBT) and the Lowell Discovery Telescope (LDT). The spectra indicated that this object is very rich in silicates, like the lunar samples collected on the Apollo missions. In addition, there was a reddish band that seemed to correspond to the spectrum of lunar soil that has received many impacts from micrometeorites and solar wind. The first hypothesis returns. This same year, a team of European scientists has carried out a new study in which the probabilities of both hypotheses are analyzed. Clearly, the asteroid option wins over the lunar fragment option. China to the rescue China to the rescue. As Tianwen-2 approaches Kamo’oalewa, Chinese scientists have begun to make their own characterizations from a distance. For example, a study was recently published in which they compared the spectrum they measured in Arizona with that of a chondrite bombarded by laser. The chondrites They are rocky asteroids that have impacted the Earth in the form of meteorites. Laser bombardment mimics the effects of several million years of impacts. When analyzing the spectrum of this manipulated chondrite, they saw a reddish band very similar to that of Kamo’oalewa. Therefore, it is possible that it is an asteroid rich in silicates. There doesn’t have to be just them. on the moon. Specifically, they believe that it may be from the Flora family, coming from the asteroid belt. The hypothesis that is winning. Currently the asteroid hypothesis wins, although there will be no clear answer until the Tianwen-2 samples reach Earth. After many debates by scientists from Europe and the United States, the answer will be brought by a Chinese ship. This, once again, shows us how important it is to work as a team to answer the big questions of the Universe. Image | 中国新闻社 In Xataka | There is a silent race to take over the Moon’s waves: dozens of companies have claimed part of its spectrum

We have small and giant black holes, but the intermediate ones do not appear. Now some scientists have designed a method to search for them and they already have two candidates

by

Today astrophysicists have a lot of information about black holes. They have even been photographed. However, there are only two types of black holes for which a multitude of evidence has been found: supermassive black holes, which are colossal in size, and stellar black holes, which are formed by the collapse of a star when it runs out of fuel. Supermassive ones usually have masses between 100,000 and 10,000 million solar masses. The stellar ones are much smaller, with approximately a mass equivalent to that of 3 to 100 suns. So what happens in the intermediate range? Don’t black holes of intermediate mass exist, between 100 and 100,000 solar masses? This is a question astronomers have been asking for a long time. Theoretically, they could exist, but no evidence has been detected. Now, a team of scientists from Yangtze University in China, has devised a method which could be useful to find them once and for all. Gravitational microlensing of fast radio bursts. These scientists have used a method that is based on searching for fast radio bursts that have experienced a gravitational microlensing deformation. These deformations are caused by massive objects that stand between the path of the blast and the Earth. By studying the effects of these disturbances, its mass can be calculated. For this reason, these scientists have analyzed a catalog of these bursts, looking for those that may have been distorted by gravitational microlensing and have been left with two candidates whose mass would correspond to an intermediate black hole. The best? They also fit with primordial black holes, so they could even serve to better understand dark matter. Clarifying concepts. Now let it be understood. Fast radio bursts are short bursts of radio waves, which come from far away, beyond the Milky Way. There is no consensus on its origin, but many have been detected, it even seems that there are a large number in a single day. For their part, gravitational microlensing are formed when a very massive object comes between a light source and the Earth. It is so massive that, due to the action of gravity, it doubles space-time and, with it, the path of light that reaches Earth. As a result, multiple and/or magnified images may form. The point is that fast radio bursts themselves can be altered by gravitational microlensing when a very massive object crosses their path. Gravitational microlensing Canadian Hydrogen Intensity Mapping Experiment (CHIME). This is a Canadian radio telescope initially designed to map the presence of hydrogen in large fractions of the observable universe. Thanks to its large collecting area and field of vision and its bandwidth, over time it was seen that It was also very useful to detect fast radio bursts. They are very fast, but when observing so much sky at once they do not go unnoticed. For all this, the authors of the study that has just been published have analyzed the CHIME catalogwith special attention to bursts that at some point have suffered a disturbance by gravitational microlensing. Two candidates. Of all the distorted bursts they found, there were two whose size matched possible black holes of intermediate size. One had between 539 and 609 solar masses and the other between 1,544 and 2,571 solar masses. Curiously, there were no galaxies or galactic clusters around it. When black holes form through physically well-known collapse processes, they are usually in the centers of galaxies. However, when they are isolated, as is this case, what is expected is that they are primordial black holes. That is, black holes that formed in the early stages of the Big Bang, before there were even stars that could collapse. something unexpected. These scientists expected to find intermediate black holes, but they may also have found evidence of the origin of dark matter. One of the hypotheses about this mysterious matter that makes up most of the Universe is that it is partly composed of primordial black holes. The problem is that the existence of primordial black holes has not been proven. With this new study, two birds could have been killed with one stone: demonstrating that intermediate mass black holes and also primordial black holes exist, in turn helping to unravel the dark matter mystery. Without a doubt, it is a cosmic carom that is worth continuing to investigate. Image | THAT | POT In Xataka | Stephen Hawking made a prediction about black holes in 1971. A new signal has proven him overwhelmingly right

We are misdiagnosing PCOS. Therefore, these scientists have proposed changing its name

by

Polycystic ovary syndrome (PCOS) affects approximately 13% of women. women of childbearing age. However, it is estimated that there are approximately 70% of cases undiagnosed. Many patients are not aware of having this syndrome until they they try to have children and they see that it costs them a lot of work. Others never receive a diagnosis. For whatever reason, this is quite common in diseases that only affect women. All you have to do is see the endometriosis figures. Now, an international team of scientists has been exploring one of the reasons they believe there may be behind this underdiagnosis and have even proposed a curious solution: changing the name of the disease. Polyendrocrine metabolic syndrome of the ovary (SOM). These scientists they have spoken with experts and have surveyed more than 14,000 patients and healthcare professionals from around the world with different specialties. This has led them to realize that there is great discomfort with the name of the condition revolving around polycystic ovaries. It is true that this is a diagnostic criterion, but not all people with this syndrome develop this condition. Therefore, if the name revolves solely around that, there may be fewer diagnoses or even stigma towards those who insist that something is wrong with them, without having been able to put a name to their condition. After observing this data, they have chosen to propose a new name: ovarian polyendocrine metabolic syndrome. This refers to the factors that are common in all patients. An affectation of your hormones, which has effects on the ovaries and can also affect metabolism. It all starts with androgens. Generally, PCOS (or SOM, whatever we want to call it), is characterized due to excessive synthesis of androgens in the ovaries. These are what are colloquially known as male hormones, although they are also produced in the ovaries. However, its levels in the female body are usually much lower. When they rise, they affect the ability of the ovaries to ovulate correctly and, in addition, they affect the levels of other hormones linked to the menstrual cycle, such as LH and FSH. FSH usually tends to decrease, while LH increases. This hormone has many functions, among which is promote the synthesis of more androgens. Therefore, even more male hormones continue to be generated. It’s a vicious circle. The symptoms. People with this syndrome usually have symptoms such as absent or altered menstrual cycle, anovulation, facial hair growth, acne, hair loss or ovarian cysts. We should not confuse polycystic ovary syndrome with polycystic ovaries. The latter is a phenomenon that can be seen on ultrasound and does not necessarily mean the presence of the syndrome. For this reason it has been proposed to change the name. Continuing with the symptoms, PCOS is also usually accompanied by insulin resistance. That is the reason why it is also considered a metabolic syndrome. Other conditions, such as type 2 diabetes or obesity, can sometimes occur as a result. 2 of 3. PCOS is diagnosed when 2 of 3 diagnostic criteria are met. These are excess androgens, irregular or absent menstrual periods and polycystic ovaries. Cysts occur because, as ovulation cannot occur properly, the follicles in which the eggs mature remain. stuck in their immature state and accumulate. The egg is not released and the cyst occurs. However, is calculated that 30% of people with PCOS do not have these cysts. In fact, the percentage could be even higher. What happens is that, perhaps because of that inappropriate name, attention is not being paid to these cases. It is not definitive. The new name for PCOS is a proposal. Now, the competent health authorities, as well as other independent scientists, must evaluate it. In England, the NHS has already assured who will evaluate the proposal carefully. It’s certainly a start. Now we just need to pay much more attention to the suffering of women. Cover | Magnificent | Sydney Fought In Xataka | ‘Children of Men’ is ceasing to be a dystopia: the global sperm count has been sinking for years

Japanese scientists have discovered what the clouds of Venus have to do with your kitchen sink

by

In 2016, the Japanese Akatsuki mission detected a massive disturbance on Venus which left scientists baffled. For a long time, its origin has been a mystery. However, now a team of researchers from the University of Tokyo has found the answer. An answer that, curiously, has a lot to do with your kitchen sink. Simulations. Through atmospheric simulations and fluid dynamics models, scientists at the University of Tokyo have discovered that a phenomenon takes place in the atmosphere of Venus, called hydraulic jump, which also happens in your sink every time you turn on the tap. You have surely noticed that, right at the point where the water hits the sink, it moves quickly and in a very thin layer. However, a circle is formed whose outer layers are thicker and move much more slowly. In other words, rapidly flowing liquid abruptly slows down and increases in height. The reasons. Initially, when water falls into the sink, its speed is greater than the local speed of the waves that are generated. However, friction with the sink surface slows down the waterso just the opposite happens. As a result, water begins to accumulate, forming a deeper layer that also moves more unstablely. What was seen on Venus. In 2016, a massive disturbance was detected moving 6,000 kilometers wide around the equator of Venus. This, in addition, was moving through the clouds, leaving behind a dark patch of denser clouds. These images taken on August 18 (left) and August 27 (right), 2016, by the near-infrared camera of Japan’s Akatsuki Venus probe, show the clear line of denser (darker) clouds moving across the planet. Special clouds. The clouds of Venuscomposed mostly of sulfuric acid, are an interesting mystery. They are known to rotate very quickly, with a speed 60 times greater than the planet’s own rotation. This, as explained in Universe Todaywould be more or less equivalent to a Formula 1 car circling a bicycle. They are made up of 3 layers, of which only the outermost one is well known. The two innermost ones harbor many mysteries, which is why these scientists have searched there. An unstable wave. In one of these internal layers, something known as a Kelvin wave is formed. It moves east very quickly, but there comes a time when it becomes periodically unstable. At that point, the wind speed slows down, like tap water, and the atmosphere builds up into a thicker layer, like water over a sink. This drastic change causes a powerful upward current of air, which pushes sulfuric acid vapor into the atmosphere, where it condenses and forms that broad wall of clouds that was detected in 2016. other planets. This is the largest hydraulic jump that has been detected in the solar system. However, these scientists believe that, using similar models, perhaps something similar could be detected on other planets. For example, they believe that Mars is a good candidate to host this phenomenon. It would be interesting to check, since Venus is too inhospitable a planet to colonize, but science Yes, he has his sights set on colonizing Mars in the future. Knowing perfectly the mysteries that its sky houses is necessary for the success of this type of missions. Image | MIT/Zeimusu | T. Imamura, Y. Maejima, K. Sugiyama et al., 2026 In Xataka | A green beam illuminated Venus in the night sky. It is not an unknown phenomenon, but it is very difficult to see

For 120 years, scientists considered the Omiltemi rabbit extinct. Meanwhile, in Sierra Madre del Sur they were hunted for food.

by

When in 1904 Edward William Nelson identified the first Omiltemi rabbits, he did not know that this was going to be one of the last confirmed sightings of what, for decades, has been considered one of the most endangered mammals in the world. The bug. It was a large, nocturnal rabbit, with dark reddish hair, long ears and a short tail. But not much else was known because zoologists had frepeatedly scratched in finding and studying it. And yet, if they had asked the inhabitants of the Sierra Madre del Sur (in the Mexican state of Guerrero), they would have been able to add one more thing: that they are very rich. Because while scientists were looking for these bugs, neighbors hunted them and integrated them into their usual diet. Where are those rabbits? We must not fall into simplifications, since 1998 we already suspected that the rabbit was still alive and there. That year, some local hunters gave researchers the skin of a killed specimen: that is, we had physical proof that the species still existed. Therefore, the species was not officially extinct; What appeared in the species lists is that we did not have enough data to know what was happening with it. Now, after a long investigation with traps and sampling, we do have them. He wasn’t dead… Between 2019 and 2024, a team led by José Alberto Almazán-Catalán (the Institute for the Management and Conservation of Biodiversity) carried out a specific search for the rabbit under the program Search for Lost Species by Re:wild. They visited 10 areas and obtained records in 7 of them. The conclusion of this work (and I quote verbatim) is that the Omiltemi rabbit “is a rare species, but not only is it not extinct, but it is much more common than previously believed.” The data matches with the graphic material that Fernando Ruiz-Gutiérrez published in the Mexican Journal of Mastozoology. And then? Well, although the situation has not changed, it has revealed everything that we do not know. It is now evident that the distribution reaches an area up to three times larger than previously suspected. It is also true that, without suspecting it, the communities in the area have been hunting (and even breeding) these rabbits for decades without knowing that they were Omiltemi rabbits. And it is curious how this type of news helps make clear how little we know about the world around us. The initiative Search for Lost Species from Re:wild has already ‘recovered’ 13 species around the world. Some of them, like Winton’s golden molethey had gone 86 years without confirmed records. “There are more things in heaven and earth, Horatio, than your philosophy dreams of,” Hamlet tells Horatio and, if we apply it to contemporary science, we see that this is still the case. Image | Re:Wild In Xataka | Spain is witnessing a shocking phenomenon: three invasive species are feeding each other to conquer the country

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

Although there are scientists saying the opposite, it is time to recognize it: continents do not exist

by

For a couple of years and from time to time, a very specific type of article has gone viral: one that repeats that there is a group of researchers from the University of Derby has found a new (micro)continent in Davis Strait. That is, between Greenland and North America. And yes, it sounds a little Martian. How could we have lost an entire continent in the 1,143 kilometers that that strait measures? It has its explanation What the hell is a continent? The most intuitive answer is “a large area of ​​land surrounded by water”; But the truth is that it only works in theory and, when we tackle the problem, everything gets complicated. Therefore, if the question is “how many continents are there in the world?”, the only logical answer is this: “it depends.” What do you mean “it depends”? The reasons behind many of the divisions we handle are “purely historical and cultural.” In fact, as Miguel García explains“the educational systems of different countries establish different continental divisions”: In Anglo-Saxon countries, it is most common to say that there are seven continents (Europe, Africa, North America, South America, Asia, Antarctica and Oceania); On the other hand, in Romance language countries, the most common answer is that there are six continents (uniting the Americas into one); Six continents are also explained in the countries of the ex-Soviet orbit (although they keep America separate and what they unite is Europe and Asia). There are more options, of course. For example, we could unite Asia, Africa and Europe on a single continent and, together with America, Australia and Antarctica, there would be four. By proxy, we could even remove Antarctica because, well, without its snow cover it would become an archipelago (whose largest island would be smaller than Australia). It’s time to admit that continents do not exist. They are social constructs, like municipalities or provinces. Hence, as García explainsFrom a geological point of view, it can be concluded that continents do not constitute a scientific concept. In any case, we can talk about tectonic plates (and, although defining their number is also a hassle, we would not talk about less than 15). So what are the Derby researchers talking about? Now it’s time to get into the matter: what researchers have used is something elsethe thickness of the Earth’s crust. In general, there are two types of Earth’s crust: continental (about 35 kilometers thick) and oceanic (between 8 and 10). Of what they have realized is that as the tectonic plates between Canada and Greenland have shifted, the Earth’s crust has been reconfigured. The result has been a protocontinental (i.e. extremely thick) crust on what should be an oceanic crust. And what is all this for? It must be admitted that, once we get the matter down, everything seems more boring. However, the finding is very interesting: we actually don’t know very well how tectonic dynamics work. We have very developed ideas and models, yes; But when it comes down to it, there are more questions than answers. Being able to study in detail the formation of a protomicrocontinent is a unique opportunity to understand phenomena such as the one that is dividing Africa in two. And we have already seen that, unlike what we tend to believe, this has a real impact on daily life of millions of people. Image | Kate Ter Haar In Xataka | A huge crack has opened in Kenya’s Rift Valley and it seems it’s just the beginning This article was originally published in 2025. We have updated its content.

The ocean fooled scientists with this “alien egg.” Almost three years later, we have the answer

by

Although we try to learn a lot of information about the space that surrounds us, the reality is that there is still a lot to know here on Earth. This is what we evidenced in August 2023 when the Seascape Alaska 5 expedition, at more than 3,200 meters deep in the Gulf of Alaska, found a shiny golden hemisphere and with a hole in the center. And the question was clear: how did he get there? Many questions. When these findings were seen live, the researchers themselves joked that it looked like the beginning of a horror movie, and social networks did not hesitate to dub it the “alien egg.” The problem here is that the scientific community had no idea what that artifact was doing attached to a rock on the seabed. But three years later this mystery has been solved. It’s not alien. After being extracted from the seabed, the enigmatic specimen was sent to the laboratories of the Smithsonian’s National Museum of Natural History, where a research team set to work to determine what it was. And to the disappointment of many, it is not a specimen that came from outside our planet. The results, published a few days agorelate how the researchers decided to extract and sequence the mitochondrial DNA from the tissue and, from this, they crossed it with the large databases of genomes that are already known and in this way they ruled out that it was not a marine sponge, a bacterial biofilm and it was not an egg either. What was it? Here the genetic code pointed directly to a species that was cataloged in 2006 as Relicanthus daphneae and of which, if we look for a photograph, we will be surprised to see a kind of giant anemone of the depths with tentacles that can measure more than two meters. And this makes us wonder: why did the Alaskan specimen look like a smooth, golden sphere? And here the research team points out that the golden orb found in the deep sea was not an animal itself, but a “cuticular relic.” What exactly is it? In other words, these are the remains of the base or “foot” that this anemone uses to anchor itself to the rocks of the seabed, resisting the strong abyssal currents. In this way, when the anemone dies, it detaches or moves; this fleshy and resistant base is left behind. And the hole? This was a point that greatly worried researchers in 2023, but the reality is that it was not the hatching mark of a creature, but rather it is simply a natural tear in this residual tissue. The curious thing here is that this find also fits with another similar specimen collected in 2021, confirming that this golden “mold” is a common trace of the species after its death. Images | NOAA In Xataka | We have drilled the seabed at a depth of 2,500 meters. And we have found things we didn’t think were possible

Some Swedish scientists decided to drug salmon with cocaine and then release them. It happened just what was expected

by

There is more than just fish and algae in the world’s rivers. More or less diluted amounts of chemicalsincluding pesticides, pharmaceuticals and illegal drugs. He checked it a few years ago a team from King’s College that, after taking samples in various parts of the county of Suffolk, in England, found cocaine and ketamine residues. Researchers have long known that wildlife is exposed to these compounds, but one question remained: How do drugs affect them in their natural environment? To find out in Sweden have drugged to dozens of salmon. Drugging salmon? That’s how it is. It sounds strange, but it is exactly what a group of scientists from Griffith University, the Zoological Society of London and the Max Planck Institute, among other organizations, have done. They basically took 105 salmon (salmo salar) from a fish farm, they divided them into several groups and added implants that supplied them with drugs. Then they released them. More or less as in the famous case of Cocaine Bearbut in a planned way. How did they do it? 35 of those salmon were implanted with a special device that slowly released coca into their bodies. A similar system was incorporated into others, although modified to provide benzoylecgoninethe main metabolite of cocaine. The third group did not receive any substance to act as a control. Once prepared, the salmon, all young specimens, were released into Lake Vätternsouth of Sweden. For eight weeks the researchers dedicated themselves to finding out how each group behaved. The specimens in the experiment wore a special tracking device, so (with the help of sensors installed around the lake) scientists could follow their trail and calculate how far they swam. And what did they find out? That the drugged salmon behaved very differently from the ‘sober’ ones. Especially those who received benzoylecgonine. After releasing the fish on the southwest bank of the Vättern, the researchers found that the salmon exposed to coca swam on average five more kilometers than the ‘clean’ ones, a considerable difference that falls short, however, when the specimens to which the metabolite was supplied are analyzed. They swam almost 14 km more, which led them to enter the northern area of ​​the lake. “The team found that fish exposed to benzoylecgonine swam up to 1.9 times farther per week than those not exposed and dispersed up to 12.3 km farther,” duck Griffith University. The agency also clarifies that the changes “became more evident” as the days passed, which shows that exposure to coca alters the behavior of fauna. Why is it important? Let the drugged salmon swim more kilometers and cover more space than others without ‘doping’ is more important than it may seem. These behavioral changes influence aspects such as what places the fish occupy, where they feed or the risks they face. More kilometers also translates into greater physical effort, which forces the salmon to look for more sources of nutrition to recover energy. “Where fish go determines what they eat, what eats them, and how populations are structured,” comment Dr. Marcus Michelangeli. “If pollution is driving these patterns, it has the potential to affect ecosystems in ways we are only beginning to understand.” But that was already known, right? Yes. And no. We knew that aquatic fauna is exposed to the drugs that we consume. The 2019 study in Suffolk and others, such as the made in 2016 in Puget (Washington), during which researchers detected traces of Prozac, Lipitor and cocaine in the body of salomes. We also knew that these substances alter the behavior of wildlife. In fact, scientists they already checked how water fleas exposed to coca swim faster or crabs are more reckless. The really interesting thing about the study carried out in Sweden is that it has allowed us to go one step further: to leave the laboratories, which were the isolated space in which these types of experiments had been carried out until now, and carry out research in natural environments and the same conditions that fauna is found. It hasn’t been easy. Although the team guarantees that the entire experiment has been done in safe conditions for the ecosystem and humans. Obtain all necessary permits, they confess researchers, it was “a tedious process.” And what to do now? Dr. Jack Brand, from the Swedish University of Agricultural Sciences, recognize that more studies are needed to fully understand the consequences of pollution in rivers, lakes and seas. It is an important issue, among other reasons because the substance that has most altered salmon is benzoylecgonine, which has a special impact. “It was the metabolite, which we know is found in higher concentrations in nature, that had a much more profound effect on the behavior and movement of the fish,” warns in statements to Guardian. “This suggests that if we perform evaluations without including compounds such as these metabolites and their derivatives, we could be overlooking an important part of the environmental risks to which we expose these animals.” Images | Colin Davis (Unsplash), Katmai National Park and Preserve (Flickr) and Scazon (Flickr) In Xataka | In 2001, a yacht took refuge on a remote island in the Atlantic. Days later its inhabitants breaded fish with coca

Scientists have connected 200,000 human neurons to a chip. And he made them play ‘Doom’

by

If they tell us that human neurons are playing ‘Doom’, the first thing we would think of is science fiction. However, that is exactly what the Australian company Cortical Labs has shown with your CL1 system: about 200,000 live neurons grown on an array of electrodes on a chip, capable of receiving information from the game and responding through electrical patterns. We are not talking about conventional artificial intelligence, but rather biological tissue interacting with software through an interface designed for that purpose. Human neurons and ‘Doom’. The demo isn’t just launching the game and letting something random happen. In the material shared by Cortical Labs, those responsible explain that the system receives signals from the video game environment and generates electrical patterns that translate into the character’s actions. This is a form of learning in which the system modifies its response depending on the result obtained. The key here is not skill, but the ability to adapt, which, according to the company, they are managing to train and mold in real time. How the interaction loop is established. For the experiment to work, it is not enough to display images on a screen. According to CTO David Hogan, an independent developer managed to convert the game’s visual signal into “electrical stimulation patterns” that are applied directly to the cell culture. These stimuli provoke electrical responses in neurons, and certain firing patterns translate into specific actions within ‘Doom’. In this way, the system creates a closed loop in real time in which each decision has an immediate effect on the virtual environment. look back. In 2021, the same company managed to make a system based on more than 800,000 neurons play ‘Pong’an experiment that required years of scientific work and specific training. That precedent laid the foundations for what would later become the CL1, the equipment presented at the Mobile World Congress in 2025 as the world’s first commercial biological computer. As we explained at the time, the system combines neurons grown on silicon with software called biOS, responsible for exchanging electrical information with living tissue. It is advisable to adjust expectations. The system, it should be noted, falls far short of advanced human performance. Brett Kagan of Cortical Labs emphasizes that the experiment is not intended to replicate a miniature brain, and rejects the direct comparison: “Yes, it is alive, and yes, it is biological, but it is actually used as a material that can process information in very special ways that we cannot recreate in silicon.” The emphasis, therefore, is not on skill, but on the type of processing that this biological substrate allows. Starting point. In the video, the team encourages researchers and developers to interact with the CL1 open API. Cortical Labs hopes to address progressively more demanding tasks than a classic video game, although the video itself also recognizes that there is room to fine-tune the feedback of successes and errors. For now, what we have is a proof of concept that shows potential, but whose path will depend on what others manage to build on this platform. Images | Cortical Labs In Xataka | Sam Altman has spent his entire life saying one thing and doing exactly the opposite. And this time it didn’t even take 48 hours.

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.