Salt

We have been banishing the humble traditional salt shaker from the table for years. Now we have realized that it is a mistake

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For decades, problems such as goiter, hypothyroidism, and childhood cognitive deficits linked to a lack of iodine in the body seemed to be a thing of the past in developed countries. All this was a success of the advances that were seen in public health from the 20th century onwards by targeting the need to add iodine to salt of table that we all consume. But now in many countries there is a significant deficiency in iodine that can lead to the appearance of serious diseases. The culprits. Ironically, new health and wellness trends, as we are seeing a huge boom in non-iodized “gourmet” salts that seem very cool, but they do not have the iodine that is supplemented to classic salt and that we need in our diet. The map of a deficit. According to data from the WHO itself in Europe and the Iodine Global Network, mild iodine deficiency persists and is spreading in countries where it was believed to be an eradicated problem. To give us an idea, in the UK Recent data suggest that women of childbearing age have gone from having sufficient levels to being classified as having mild deficiency. If we continue investigating, in Australia the problem has been reappearing for years despite fortification attempts, while in the United States, recent reviews published indicate that the deficit is growing again despite the historical iodization of salt, linked to new dietary patterns. The ‘gourmet’ culprit. Historically, common table salt has been our primary vehicle for consuming dietary iodine. But in recent years we have seen a trend appear for this product, such as Himalayan pink saltflaked sea salt or kosher salt. The problem with these options, in addition to being much more expensive, is that they are perceived as very healthy alternatives. The problem is that they are almost never iodized, and that is why their increasing consumption in order to improve health is ultimately causing the opposite. There is more. In addition to the salt problem, it must also be kept in mind that in many countries cow’s milk has traditionally been the main source of iodine in the diet due to livestock supplementation and milking disinfectants. But its consumption is falling radically. This is in addition to a general transition towards vegan or flexitarian diets that has increased the consumption of vegetable drinks that, although they are reinforced with calcium or vitamin B12, are not fortified with this iodine. Its consequences. That there is an iodine deficiency is not nonsense, since iodine is the fundamental fuel of the thyroid gland and is vital for neurological development, and that is why the European Food Safety Authority establishes that an adult needs 150 micrograms of iodine per day, a figure that rises to 200 µg in pregnant women. If we focus on pregnant women, having a deficit can have fatal consequences with problems in fetal cognitive development or even drops in IQ. The cases. An analysis published in 2019 estimates that there are currently 81.4 million cases of deficiency in women of reproductive age and, although since 1990 the global prevalence has decreased enormously thanks to universal iodization, the problem now presents a dichotomy: it affects regions with a low human development index such as sub-Saharan Africa due to lack of resources, and rich countries due to modern dietary decisions. The solution. Here the WHO demands that prevention policies be reinforced through specific legislation, promoting universal iodization of all salts, both those for direct consumption and those used in processed foods and bakery. In addition, the need to require or encourage vegetable drinks to be systematically fortified with iodine is pointed out, matching the nutritional profile of cow’s milk. In this way, we return to the original idea of ​​introducing iodine into common table salt, so now it is time to supplement the new foods that appear on the market. Images | Jonathan Cooper Melissa DiRocco In Xataka | If you fall asleep in less than five minutes, you don’t have a “superpower”: it’s a warning signal from your brain

We have found a time capsule in the form of salt in Chile. And now finding life on Mars is closer

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As we continue to explore how to get to Mars with Artemis II As a critical engineering and logistics bridge in the form of a long-term trial of interplanetary travel, science continues to search for traces of life on the red planet. And it is not easy: although 3.37 billion years ago an ocean covered half the planetMars is today a dry planet devastated by radiation. The question is where to look for that life. The answer, as incredible as it may seem, may be more than 3,500 meters high in the north of Chile, in the Salar de Pajonales, a landscape that is also desolate where there is a range of extreme temperatures ranging between -23 °C and 26 °C, one of the highest solar radiation recorded on Earth, there is hardly any precipitation and winds that exceed 100 km/h. And yet, there is life. There a research team has discovered that plaster constitutes the perfect refuge for life. Spoiler: Gypsum is a common mineral both on Earth like on mars. The discovery. According to this research, gypsum is not only a sedimentary rock, but also a biological repository. Thus, this mineral is capable of harboring both current life in the form of microorganisms that live within the crystals and preserving molecular fossils and microscopic structures. A kind of time capsule that protects organic material from degradation for millions of years. Why is it important. The consequence of this finding in space research is direct: if gypsum is a “magnet” for biological preservation in hyperaridity conditions, the scientific community knows that the abundant sulfate deposits on Mars (such as Gale crater) are a magnificent place to continue searching for traces of extraterrestrial life. If there was life on Mars, gypsum is a likely place to house its traces. Context. The Salar de Pajonales seems like a place from another planet: it is in high mountains where ultraviolet radiation is high, there is extreme aridity and thermal fluctuations reminiscent of the conditions on Mars from billions of years ago, when the red planet began to dry out. In this scenario, life has learned to hide from the unfriendly surface in a lifestyle endolithic to survive. Thus, the mineral functions as a solar shield and moisture reserve. How have they done it. To read what the rocks contain, the Tebes-Cayo team has applied a kind of high-precision molecular and mineral archaeology: With habitability and climate analysis with a meteorological station that recorded data every 20 minutes for 40 years monitoring water activity. Using x-rays, petrography and microfluorescence to create thin sections to distinguish minerals and their distribution without destroying the sample. With microscope, isotopes and DNA sequencing to identify the microorganisms, the trapped corpses and to confirm that the carbon found has a biological and not a geological origin. Yesyes, but. We already know that gypsum is the ideal candidate to search for life on Mars, but that is based on a hypothetical premise: that it ever existed. On the other hand, and although the Salar de Pajonales is reminiscent of the Red Planet, the conditions on Mars are even more extreme than in Chile (there is almost no atmosphere and it is even colder), which may have affected the preservation in a different way. And then there is the practical application: it is one thing to detect these biosignatures in the high mountains of Chile and another to use a robot thousands of kilometers away for the same purpose. In Xataka | Europe has thought of throwing three robots into a volcanic lava tube and now colonizing the Moon or Mars is closer In Xataka | If the question is “how are we going to build houses on Mars” the answer today is “with bricks made of urine” Cover | Luiza Braun and BoliviaIntelligent

There are already autonomous robots smaller than a grain of salt

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Robotics has been pursuing the same obsession for decades: reducing the size of machines without emptying them of intelligence. Until now, that goal had a physical limit that was difficult to cross. Above a certain threshold, making a smaller robot meant making several compromises. That just changed. A team of researchers has shown that It is possible to build an autonomous robot so tiny that it can barely be seen, but still capable of perceiving its environment, processing information, and responding without outside intervention. The development comes from researchers at the University of Pennsylvania and the University of Michigan, who have built what the team describes as the autonomous programmable robot smallest achieved so far. The device is designed to operate submerged in a fluid, and in that environment it can move and operate. The scientific article describes a body measuring approximately 210 by 340 micrometers and 50 micrometers thick. Its scale is so small that it can rest on the ridge of a fingerprint and is almost invisible to the naked eye. A complete robot on a microscopic scale. The difference compared to previous attempts is not only in the miniaturization, but in what this device theoretically manages to integrate. According to the researchers, the microrobot incorporates computing, memory, sensors, communication and locomotion systems within a single autonomous platform. Until now, these systems often relied on external equipment to process information or make decisions. In this case, the robot can execute digitally defined algorithms and modify its behavior based on what is happening around it. The main obstacle to getting here has not been conceptual, but physical. At micrometer scales, the rules change: gravity and inertia lose weight, and forces such as viscosity and drag dominate. In that environment, moving through a fluid is more like moving through thick material than swimming in water. Added to this difficulty is an even more severe restriction, energy. With power budgets around 100 nanowatts, integrating propulsion and computing at the same time had been, until now, an almost impossible compromise. Electronics designed to survive on almost no power. The solution involved rethinking the robot’s electronic architecture from scratch. The team worked with a 55 nanometer CMOS process and used subthreshold digital logic to keep consumption within a budget close to 100 nanowatts. In that space they managed to integrate photovoltaic cells for power, temperature sensors, control circuits for the actuators, an optical receiver for programming and communication, as well as a processor with memory. Locomotion is one of the most unique aspects of design. Instead of motors or appendages, the microrobot uses electric fields to induce currents in the fluid around it, moving without moving parts that could break. Its creators describe it as a system in which the robot generates its own “river” to move forward. That same minimalist logic extends to communication. The measurements you make, such as temperature, are encoded into motion sequences, a simple but effective method at this scale. Tiny robots that act together. Beyond individual behavior, the team has shown that these microrobots can synchronize and operate in groups. According to the researchers, several devices are capable of coordinating their movements and forming collective patterns comparable to schools of fish. This approach opens the door to distributed tasks, in which each unit contributes local information or action. In theory, these groups could continue to operate autonomously for months if kept charged with LED light on their solar cells, although available memory limits the complexity of programmable behaviors for now. With this platform, researchers propose a path toward more general-purpose microrobots, capable of executing tasks in difficult environments without constant supervision. On the horizon are applications that today are closer to the laboratory than to the real world, for example in biomedicine, where devices of this type could operate on body fluids. The team itself insists that this is just a first step. The advance opens a technical base, but the jump to practical uses will depend on increasing performance. Images | University of Pennsylvania and the University of Michigan In Xataka | We still don’t know if humanoid robots will be the next great technological revolution. Yes we know that China will lead it

The exorbitant deployment of data centers for AI has a new problem: salt caverns

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In the collective imagination, artificial intelligence is an ethereal cloud of algorithms. The reality is much more complex and what we know for sure is that an energy eater that needs to “eat” constantly. Satya Nadella, CEO of Microsoft, has summarized with unusual crudeness: “The problem is no longer that it is missing Nvidia chips, but that there are not enough plugs.” And so that these plugs have power 24 hours a day with the 99.999% reliability that the sector demands, Big Tech has ended up looking where no one expected: thousands of meters below the ground, towards the salt caverns. When the bits hit the underground. The AI ​​race has entered a “slow start” phase in the construction of these underground caverns, which could hinder the rollout of data centers. According to Fortunethe reason is mathematical since these digital infrastructures do not tolerate interruptions and require extreme reliability. To guarantee this constant flow, natural gas has become the indispensable backup. However, as they explain, it is not enough to produce gas; you have to save it. Industry projections indicate that only about half of the storage that will be needed to meet future demand has been planned. Without these artificial caves dug thousands of meters below the surface, hyperscalers (Google, Amazon, Meta) are left at the mercy of gas pipelines, vulnerable to corrosion, landslides or extreme weather events. But why salt caverns? The technical answer lies in flexibility. As detailed by experts in Fortunethere are two ways to store gas: in depleted oil fields or in salt caverns. The former are cheaper, but structurally slow. The gas is injected in summer and extracted in winter, following a classic seasonal cycle. AI, on the other hand, does not understand seasons. Their demand peaks are constant, sudden and difficult to predict. The salt caverns, created by injecting water to leach the mineral, act as a high-pressure lung: they allow gas to be injected and extracted with a much higher frequency, adapting to the volatility of the electrical grid that powers the servers. The “supercycle 2.0”. Given this scenario, companies like Enbridge they have taken the lead. Greg Ebel, CEO of the company, has confirmed that they are expanding their facilities in Egan (Louisiana) and Moss Bluff (Texas). “This demand dramatically changes the economics of supply,” he said. But it is not enough. Jack Weixel East Daley Analytics analystwarns that double the capacity currently planned is needed. Projects such as the Freeport Energy Storage Hub (FRESH), in Houston, They seek to connect up to 17 gas pipelines to a new salt dome by 2028, but construction times—often exceeding four years—clash with the urgency of AI. For his part, Jim Goetz, CEO of Trinity Gas Storage, defines it as the “storage supercycle 2.0”. His company has just reached the final investment decision (FID) to expand its capacity in East Texas, seeking to support critical infrastructures such as Stargate, the titanic $500 billion project from OpenAI and Microsoft. The shadow of a doubt. The underlying question is not only whether the salt caverns work—they work—but what type of energy system they are consolidating. Natural gas is fast, flexible and reliable, but it also introduces new dependencies and risks. According to analystsgas infrastructure on the Gulf Coast is especially vulnerable to extreme weather events. A direct hurricane over Texas or Louisiana can disrupt production, exports and transportation at the same time. In that scenario, even with gas available in other regionsthe lack of nearby storage can leave data centers without electrical backup. Added to this is the question of price. The sustained increase in demand to fuel data centers, LNG exports and reindustrialization is already pushing up gas and electricity bills. Without enough storage capacity, that volatility is amplified. As the sector points out, storage acts as a buffer; when it is missing, the peaks transferred directly to the consumer. Furthermore, the criticism is more structural since AI is pushing to prolong dependence on fossil fuels just when governments and companies were committed to reducing it. Look beyond the gas. Aware of this physical limit, large technology companies are no longer looking only at salt caverns and gas pipelines. They look for any firm source of electricity that does not depend exclusively on the traditional energy market. An example is Fervo Energy, a geothermal startup that has just closed one of the largest financing rounds in the sector, with Google as an investor and client. His commitment to advanced geothermal —constant electricity 24 hours a day—reflects the extent to which AI is redrawing the energy map. This is not an immediate or universal solution, but it is a clear signal: the problem is no longer technological, but energy-based. A problem only in the United States? The United States is the epicenter, but not the only scenario. The clash between AI and energy is global, although responses vary. In Europe, the rise of AI is leading to rethinking the closure of gas and coal plants. Some electricity companies are negotiating to convert old plants into data centers, taking advantage of their access to the network, water and already depreciated infrastructure. The logic is the same: firm, immediate and available energy. China, for its part, has chosen another path. Beijing not only promotes underwater data centers either large energy clusters in interior provinces, but directly subsidizes the electricity that powers its AI. The objective is to reduce the “fuel” of digital models and compensate for the lower energy efficiency of national chips compared to those from Nvidia. The return to the underground. In all cases, the pattern repeats itself. Renewables are growing, but not fast enough or with the stability necessary to sustain the demand for AI in the short term. Gas – with salt caverns, temporary turbines or recycled plants – becomes the inevitable crutch. In our race to create an intelligence that lives on the plane of ideas, we have ended up returning to mining, drilling, and the depths of the Earth. The future … Read more

How some salt has managed to overcome the efficiency of solar panels

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In the kitchen, a pinch of salt is enough to give life to a dish. In the laboratory, another very different salt promises a similar effect, to give a new flavor to solar energy. What for the scientists of the University College in London is a simple chemical additive, it could become the seasoning that revolutionizes the energy future. Seasoning the panels. A team from University College London (UCL) has proven To add Guanidininum Tiocyanate to Perovskitas allows you to manufacture more efficient and stable solar cells. In trials with tin and lead perovskitas in the lower layer of tandem cells – they achieved a 22.3% efficiency, near the record for that family. Scientists have underlined a double effect: more performance and more useful life by reducing microscopic defects during crystals. Just a pinch of salt. The secret is how crystals form. Normally, during manufacturing, Perovskita crystals are formed in a disorderly way, with microscopic imperfections that reduce their efficiency and shorten their useful life. In this way, the guanidinium tiocyanate enters that acts as a modulator: it slows down and controls that process, achieving smoother and more uniform layers. It is as if adding salt, the crystals had time to grow more orderly, without leaving holes or defects that then act as electrons traps. A complementary study at ACS Energy Letters deepened in this mechanism. According to the authors, Guanidinio cations not only improve the quality of the glass, but also facilitate the extraction of electric charge, reduce ion migration and increase stability. This is especially important in the inverted structures (PIN), which are considered more stable in the long term than conventional ones. In the words of the first author of the studyYueyao Dong (UCL): “By modulating the formation of crystals in a controlled way, we were able to create much higher quality films, a change that translates directly into more efficient and durable devices.” The next solar border. The implications go far beyond a laboratory record. The issue is that each layer of Perovskita’s tandem can be designed to absorb different parts of the solar spectrum, which allows to take advantage of more light and turn it into electricity. So, According to UCLusing this type of “salt” in the lower tandem layer could further push records, since other Pervskita tandem They have exceeded more than 40% laboratory efficiency. Can you climb? Perovskitas have another advantage: they are manufactured with low temperature processes, simpler and less energy intensive than silicon. That opens the door to light and flexible modules, integrable in facades, windows or Curved surfaces. However, the interesting thing about this finding is that the additive acts during the manufacture, without the need to redesign the device. In theory, this facilitates moving it from laboratory cells to industrial modules. A door that still has to cross. However, the biggest challenge is still pending: Long -term certified durability. Perovskitas still have to demonstrate that they resist years of sun, humidity and heat without degrading. To this is added the question of lead, present in many formulations. Precisely UCL’s work bet by the tin-pull mixture, with focus on stability and reduction of defects. They are steps in the right direction, but not the final goal. ACS ENERGY LOTTERS STUDY Add a curious nuance: Small dose of Guanidinio help; Too much can be counterproductive and stop cargo transport. In other words: this seasoning works as in the kitchen, where an excess of salt ruins the recipe. A simple touch makes the difference. Like a pinch of salt, it enhances the taste of a dish, a pinch of guanidinio tiocyanate can turn Perovskita into the main ingredient of the energy transition. What until recently was a promising but fragile material, it begins to consolidate as a real alternative to silicon. If science manages to stabilize and climb it, we could be facing the beginning of a new solar era: cleaner, more powerful and more accessible. Image | Unspash and Unspash Xataka | All solar panel technologies that exist and which are more efficient, in a graph that goes 1975 until today

Low salt diets were our ally to control blood pressure. We had been overlooking the importance of banana

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Sodium and potassium are two key elements for the functioning of our body, one sometimes interconnected to the point of serving one as a counterweight of the other. The excess sodium that we associate with high blood pressure leads many to control their salt consumption. On the other hand, if there is a food that we associate with potassium this is banana. Although not the only remarkable one. Less salt … or more bananas. A study based on mathematical models He has found Tests that increasing potassium consumption can be even more effective than reducing sodium consumption when our goal is to regulate our blood pressure. This can help us increase the dietary options of people at risk of cardiovascular diseases. “Usually, when we have high blood pressure, we are recommended to eat less salt,” Explain in a press release Anita Layton, co -author of the study. “Our research suggests that adding more foods rich in potassium to your diet, such as bananas or broccoli, can have a greater positive impact on your blood pressure than just cut the sodium.” Electrolytes Both sodium and potassium function and electrolytes In our body, that is, substances that help our body conduct electrical signals, but that also fulfill other functions such as regulating the amount of water in our body or the level of acidity in the blood. Calcium, magnesium or phosphorus are other elements that enter this category. The sodium Specifically, it plays an important role in maintaining the volume of the blood fluid under control. Under normal conditions, if our body detects an excess of sodium or an excess volume in the extracellular medium, it reacts excreting sodium to return to normal. The lack of potassium is has related with greater difficulty in controlling the risks derived from sodium in our body. A mathematical model. The connection is well described in the scientific literature but the complexity of the biological mechanisms involved makes it difficult to estimate the magnitude of this connection between sodium, potassium and blood pressure. To estimate it, a team of researchers from the University of Waterloo, in Canada, has created a mathematical model that allows you to quantify this connection. The new model managed to identify how the potassium to sodium ratio consumed affects the body. The model takes into account aspects that affect this relationship such as sex or age. The team observed, for example, that, although men are more easily in an increase in blood pressure, they also respond to a greater extent to the increase in the proportion between potassium and sodium. The details of the study were published In an article In the magazine American Journal of Physiology-Renal Physiology. Evolutionary question. As explained by the team responsible for the study, evolution has been able to have a great impact on how these elements affect us. They point out that, during the recent evolutionary history of the human being, the presence of fruits and vegetables in our diet has been high, so it is natural that the regulatory systems of our body depend in such a degree of nutrients that these give us. Contemporary Western diets are, however high in sodium and low potassium. This could explain, they point out, why blood pressure problems are so prevalent in industrialized countries. Not only bananas. We usually associate potassium to bananas but these are not the only foods that this nutrient contributes. Among the foods that They stand out for their contribution in potassium They are vegetables such as spinach, tomatoes, avocados and brocoli; legumes such as beans, lentils and soy; The potatoes. Among the products of animal origin are some dairy products, and fish such as phatan, salmon and Verdel. In Xataka | Banana must die (and only science can resurrect it) Image | Pixabay

The sugary drinks tax has been a resounding success. And there are those who want to extend it now to salt

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At the beginning of the week, Chris Hilson, a professor at Reading University, brought together the press and presented The most ambitious report which had been done to analyze the United Kingdom sugar tax. His data were begged: since the tax was introduced, the sugar content in the drinks 44% has been reduced. However, Hilson doesn’t want to stay there. Why not use this approach to improve food, address the obesity epidemic and promote a healthy and sustainable diet? Why not launch, for example, a salt tax? The salt? Indeed. Salt has been in the spotlight of doctors, nutritionists and health researchers for many years. And rightly: Reducing salt intake is one of the simpler and more profitable ways to reduce the incidence of diseases such as arterial hypertension, coronary heart disease or strokes. The problem is that we don’t even know how much salt we consume. And we don’t know because it is very difficult to know: According to the surveys availableapproximately 70% of the salt consumed by Western populations comes from processed foods. The “approximately” is key. It is not easy to measure at the individual level and not even biometric analyzes (such as urine) are very precise when determining consumption. But we know that, if we discount the effect of other critical factors, add salt to meals on the table It is related With a reduction of more than two years life expectancy in men and about a year and a half for women. It is not, seen what is seen, something lower. But what can we do? There it enters Hilson’s idea: “It is vital to extend sugar tax to all processed foods. The current tax has reduced sugar in soft drinks, but we need to see the same success in products such as milkshakes, cookies, yogurts and cereals for breakfast to improve public health,” said. In the background, according to your team’s data, well -designed regulations in the food sector in general could translate into “a healthier environment, as well as a healthier population.” A tax that always ends up. It is curious because salt taxes have historically been one of the most unpopular taxes. From French gabela to the Indian nationalist movementsSalt has played a very important role in the formation of contemporary political societies. It is true that the current tax that is being considered in places like the United Kingdom It is very different to those who disappeared throughout the twentieth century. The importance and scarcity of this resource changed radically with our technical capacity. However, it is still curious that this compound is in the pillory. As epidemics like obesity grow, more and more experts They believe that states They should take action on the matter. Above all, in well -being systems such as Europeans. The evidence shows that These types of interventions are effective. However, we are still taking the first steps in this field. Image | Timo Volz / Victoriano Izquierdo In Xataka | We have a problem with our salt consumption. And there are several alternative ingredients to remedy it

Salt water, CO2 and electricity are the new recipe to create more sustainable cement and concrete

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Cement is one of the most used artificial materials on the planet, but has two problems. The first, environmentalsince its production emits a remarkable amount of greenhouse gases. The second, the shortage of raw materials such as sand, whose mined also has an environmental impact. A new material. A team of researchers from the Northwestern University and the company ️Cemex Innovation Holding has developed A new construction material through a process that combines marine water, carbon dioxide (CO2) and electricity. This new material can be used in the production of cement and concrete and, according to its developers, in its production more CO2 than it emits. That is why the new material has the ability to make the most sustainable cement and concrete production. Salt water, CO2 and current. The method to create the new material begins by introducing electrodes in the salt water to circulate an electric current that separates water molecules into hydrogen gas and hydroxide ions. As explained by the development responsibleWhile the current circulates, CO2 bubbles are added to the water in order to change the chemical composition of the water by increasing the concentration of bicarbonate ions. The ions of these two compounds (hydroxide and bicarbonate) react with other ions that can be dissolved in marine water, such as calcium and magnesium. From these chemical reactions both calcium carbonate (CACO3) and magnesium hydroxide arise. The first compound, Continue explaining the teamit is in itself a carbon sink; The second, on the other hand, is able to capture additional carbon interacting with CO2 molecules. Copying nature. According to its developers, the process is similar to that used by corals and mollusks to build their structures and shells. The key difference is that these animals use their own metabolism instead of electrical energy to detonate the chemical process. Different uses. The resulting material, a Mixture of calcium carbonate and magnesium hydroxidecan be used as a substitute for the sand or gravel used in concrete manufacturing, but can also be used to produce cement, plaster and even paint. More control. The resulting material has an important advantage and that its properties can be altered by introducing small changes in the elaboration process such as the current and its voltage, or the duration of the injection of CO2, among others. Thus it is possible to achieve a more porous or more dense and hard substance. The details of the process and its results were published In an article In the magazine Advanced Sustainable Systems. Optimizing the capture of CO2. Another important factor is the calcium carbonate ratio and magnesium hydroxide obtained in the resulting material. This ratio depends, for example, the captured amount of carbon dioxide. According to The developers explaina 50/50 mixture of the compounds can allow to capture a ton of CO2 for every two tons of material. A more harmless waste. The process, as we indicated at the beginning, begins with the separation of water molecules. This generates, in addition to the ions used to unleash the subsequent chemical, hydrogen reactions. This gas is not only harmless but can also be used as an energy reserve. Of course, because electricity is part of the manufacturing process of this material, it must be taken into account that the net emissions of its production will depend on the mix energetic. That is, if the energy used in the process emits CO2 that is not captured, part of the capture would be lost. Another detail to keep in mind is that a good part of CO2 emissions associated with cement production They are generated at a different stage of its manufacture, when the sand is crushed with the limestone and heated at high temperatures capable of decomposing calcium carbonate. This problem occurs if the material is used in the creation of the cement and not when it is mixed later with it in the production of concrete. In Xataka | Construction has a gigantic environmental problem. Its solution: Solar cement plants Image | Northwestern University

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