Saudi Arabia and the United Arab Emirates import millions of tons of sand every year despite living on immense deserts

The story is striking in itself: Saudi Arabia and the United Arab Emirates, two countries closely associated with the desert, import tons and tons of sand every year. So striking, in fact, that the first intuition is that it is false. But, as soon as you get closer to it, you discover that not only is it true, but it is more interesting than it seems. Because yes, these countries import a lot of sand. In 2023, only the United Arab Emirates bought more than six million tons. And it is surprising, of course, because these are two countries located on enormous deserts. The explanation, however, is simple: the sand they have is not suitable for certain things. At a technical level, what is known as “eolian sand” (that which the wind accumulates in dunes) is very fine, very uniform and very rounded. That makes it a poor sand for making glass, concrete or other industrial products. It is not that it cannot be used, but it requires adjusting the mixtures, controlling the granulometry and impurities (fines), and carefully balancing the manufacturing processes. That is to say, the process ends up becoming so expensive that it is cheaper to import sand that is more suitable for standardized processes. And this, ultimately, should not surprise us. Sand is, today, the second most exploited resource in the world (only after water). The United Nations Environment Program estimates that every year 50,000 million tons of sand and gravel are used. What’s more, the lack of sand is so obvious that there are criminal networks that traffic with her internationally. However, we are not talking about just any sand. There are, as is evident, many types of sand. For what is not interesting today we can distinguish natural sand (HS 250590) and siliceous/quartz sand (HS 250510). The Gulf countries import, above all, the second. Emirates, to give an example, is spent half a million a year in the first and 87 million in the second. That is to say, although they are countries ‘rich’ in sand, they do not have the sand they need. A sand, moreover, with very specific specifications (granulometry, purity, humidity, fines, contaminants, consistency of supply) and that are basic for glass, foundry, filtration or the chemical industry. However, they also import natural sand. And this is interesting because, as they point out in the UNthis only makes clear the significance of the problem of governance and externalities. Despite having usable sand, in many cases it is preferred to buy from other countries (such as Oman) to avoid the negative externalities of draining sand from their coasts and deserts. Something that can alter livelihoods (fishing, agriculture due to salinization, coastal tourism) and increase vulnerability to storms. In the summer of 2019, the couple who became famous was arrested in Sardinia for hiding 40 kilos of sand in his trunk. That was the anecdote, the problem was another: that beyond mass tourism, the tensions on the sand are increasingly greater. It is something that has only grown and is normal. The world is not here to do without one of its most valuable resources. Image | Lars Portjanow In Xataka | We are running out of sand. And there are already traffickers who negotiate with it in India or Morocco

The US deserts have 1,200 GW solar for AI. The only problem is that Big Tech do not dare to use them

The Data centers They are the new 21st century factories. And like any factory, they need energy. A lot of energy. The main technology companies are building and operating Great data centers that allow offering services (video or Streaming video gamesfor example), but also where the different models of artificial intelligence. The problem is that They need more and morewhich translates into a growing energy demand. And although there are those who bet on the nuclear power and for the reactivation of fossil fuels, a study considers that the future is in the Solar energy outside the energy network. The problem is that, although the solution sounds great, it is not being applied. Hyperscalists. This is an important term. Technology companies that operate cloud computing infrastructures on a global scale are known as ‘hyperscalist’. Its data centers are crucial for the development of digital services, but also for the ‘big data’ and the advance of AI, and the term “hyperscalist” responds to those data centers can be scalar quickly and on demand. Climbing … how? Well, depending on the needs of that company and the fan that wants to cover, that scalability translates into more storage, a faster processing or a greater bandwidth on the network. Demand. The main players in this are Google, Microsoft, Meta or Amazon and although they have the capacity to expand their data centers, they are running with a huge problem: the amount of resources they consume. In large server centers, Water consumption It has always been a problem that companies have solved in different ways to be more responsible with the environmentbut the arrival of AI has been a revolution. Train and maintain these models consume a A large amount of energy resources And, apart from the water to dissipate the heat of the servers, a great energy capacity is needed. So much so, although there are companies Building more sustainable data centers At the structural level, energy demand is so brutal that They require coal and natural gas To meet demand. And some like Google either Goal they will use nuclear energy to feed your needs Energy out of the network. Contextualized the problem and seeing that these energy needs play against decarbonizationinvestigators of companies such as Stripe, Paces or Scale Microgrids have got to work to determine the best solution to feed those data centers in a sustainable way. His conclusion has been presented in a study in which they estimate that the total energy demand of the AI ​​for 2030 will range between 30 and 300 GW. In the case of the centers where AI training is carried out, that demand will be between 15 and 150 GW. It is a huge fan, but the solution they pose and that they consider optimal is the creation of micro -redes outside the network, fed by solar energy. According to them, systems with 44% solar energy are already competitive in costs compared to those based only on gas, and those that reach 90% renewable can be even more profitable than nuclear projects such as Three Mile Island of Microsoft. Green spots are green plots for a 90/10 stage Build where the sun glued. The advantage of this system is that its construction is fast because you do not have to reactivate a nuclear power plant. You are not tied to what the energy market demands, Geopolitical conflicts They do not leave you without supply, it is clean energy, buy solar panels is getting cheaper And, above all, it is easily scalable. If more energy is needed, it is as simple as adding more panels, but the most important thing in this equation is that they can build these centers in optimal places. Unlike servers centers, which do need to be close to the end user to offer a better service, the data centers in which the AI ​​training is carried out have geographical flexibility. This implies that they can install them in areas with optimal solar radiation and in places where the land is cheap. Optimal areas Optimal areas. In the study they have identified plots in the United States with a potential for up to 1,200 GW of solar energy outside the network, with gas support and an optimal area with large esplanades and radiation during a large percentage of the year. So, CaliforniaNevada, Arizona, New Mexico and the east of Texas They would be ideal places to house those data fueled data centers outside the network by 90%, with the remaining 10% backed by gas. Beyond this, the study points out that most of the appropriate land is private, so it can be purchased to build these facilities and that, in addition, many are within lands that would allow subsidies. If you start today, the construction bond would be between 12 and 24 months and everything seems positive, but it is not being done. If it is so good … why isn’t it? According to researchers, there are three issues that come into play. Two are closely related and have to do that this of AI training is a very recent phenomenon. The designers of the data centers have historically been skeptical when it comes to getting off the network because what they wanted was to enhance, above all, the reliability. They can’t stay a second without energy, go. Related to the historical tendency is inertia: it has never been done before, although current technology would allow to operate only with renewables (as some countries already do). And the third reason is the cost, $ 23 per MWh, specifically. The panels are increasingly affordablebut it is more expensive than not buying those panels -evidently. However, the researchers point out that this extra cost would be dampened by the Cost of emissions and compensation that would be avoided in the short term. Therefore, these solar micro -lands outside the network seem a quick way to feed large -scale data centers, but although technology is mature, it seems to spend time until … Read more

The future of Murcia and Almería is to become great deserts. And that of much of Spain too

The droughts arrive and pass by leaving behind greater or lower ravages. Also the drought that chronicly ravages Spain will have more or less intense moments, but perhaps the normality that is behind it is not like the previous one. The reason is the existence of a tendency towards long -term aridity, Aridification of the territory. A good part of the Peninsula is classified based on its aridity index as semi -arid areas, “one step” of this classification as a arid zone, according to the data of the EEENS itself. Where this process is going to advance. It is one of the points that have transcended ““B of the Higher Council for Scientific Research of the CSIC. Where do we come from. Almería, Murcia and the Canary Islands archipelago have traditionally been the areas where Spanish arid areas were concentrated. It is therefore not striking that the two provinces of the southeast peninsular are where the aridification process has had greater impact. At least until now. And it is that a good part of the Peninsula is classified based on its aridity index as semi -arid areas, “one step” of this classification as a arid zone, according to the data of the EENS itself. Potential for desertification. According to The Ministry for Ecological Transitionthe extension of these arid and semi -arid areas, to which the dry subhummedas should be added, delimits the area where the risk of desertification It must be seriously considered. According to the most recent data in the Ministry, areas with high or very high desertification risk, although they are distributed throughout the country, cover a more significant portion of the provinces of the Levant and the Southeast peninsular (In addition to the Canary Islands). The “very high” risk areas are particularly notable in provinces such as Almería, Murcia, Alicante, Granada and even Cuenca, and slightly less noticeable in some of the border provinces. Risk of desertification in Spain. Ministry for ecological transition and demographic challenge. A long -term trend. There are numerous factors that help explain why we are facing this situation. The first is the lack of rains. Beyond the current drought, the last decades have been relatively dry in Spain. Climate change is expected to aggravate this, with less rainfall on average, but more concentrated. Precedents. 2023 and 2024 were not only anomally dry: also especially warm. The increase in temperatures implies an increase in the evaporation of the water that comes to us, both from rivers and swamps and from the same soil: in spring this year the moisture of the soil was of about 0% In most of the Peninsula. Finally, water use should be mentioned. Population growth, tourism and an agriculture increasingly dependent on irrigation bring each time More pressure on reservoirs and aquifers. The latter In a limit situation. No solution to sight The combination of all these factors makes the solution difficult. Spain has a vast network of desalination plant, but the energy and ecological limitations they present prevent (at least for now) a use at sufficient scale. An example of this is the situation in Catalonia, where drought has not been able to be stopped with desalists working 100% of their abilities. Greater efficiency in water use could help complement these new sources, but here the limitations are also important: approximately three quarters of the water consumed in Spain are used by the agriculture and livestock sector according to Aquae data. The precarious situation of the sector and the recent protests do not invite to think that there is a margin of action on this front. In Xataka |The droughts are going to more. So some companies are trying to create water from the air In Xataka | Get drinking water with the brute force of the waves: the ambitious plan of the Canary Islands to face the drought Image | Andrea Imre *An earlier version of this article was published in February 2024

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