from destroying its tree masses to being the third most forested country in Europe

After decades of neglect, mismanagement and population exodus, Spain is today a European forestry power. In light of the data, reforestation efforts have borne fruit. However, not everything is good news: the Spanish forestry ‘miracle’ is accompanied by risks and problems that are very difficult to manage. Spain, forestry potential? Indeed. Spain has been climbing the European podium of forest area until reaching third position. According to Eurostat dataonly Sweden (28Mha) and Finland (22Mha) surpass Spain, which with its 19 million hectares is in record numbers. And in reality, we only count a small part of the forest area. In technical terms, not everything “forest” is “forest” and this is especially noticeable in Spain because, if we count the forest area Finland is surpassed and second place on the continent is reached. No wonder: between 50 and 56% of the country is considered forest area. Why is it important? Spain lost forest mass in a continuous and worrying manner from the beginning of the 19th century to the mid-20th century. The trend was so pressing that it began to be a problem: together with France and Germany, Spain concentrates a good part of Europe’s timber industry and overexploitation put the future of a good part of the country at risk. Luckily, the reforestation policies (and the rural depopulation that led a withdrawal of activity human productive) have caused this trend to reverse. It is not easy, almost two thirds of the forests are private and without active management; but as I say, during these decades the natural ‘movement’ of the Spanish forest was towards self-reforestation. That means that we are not always talking about “diverse mature forest” and ecologically sustainable. But, still, it is good news. Not all the mountain is oregano. Because, to begin with, poorly cared for forests, subjected to water stress, pests and indiscriminate logging, are sick forests. The evidence is clear: Europe’s forests have long they are losing the capacity to absorb carbon. Furthermore, since they are not well, everything becomes problems. Thus, what at another time would have been excellent news (a very rainy spring) become a ticking time bomb. Not for nothing, 2025 has been worst fire season. On the other hand, when we talk about forestry (with things like eucalyptus monoculture) what we find is that afforestation and increasing density can affect aquifers and finish giving the finishing touch to biodiversity. The big step we have to take. Little by little, humanity begins to realize that it is inevitable that it begins to take direct management of the entire ecosystem. And yes, it is something expensive, costly, and it cannot be stopped when there are economic problems. It is a very long-term project that, honestly, in a very polarized and in full energy transitionno administration can ensure 100%. However, it is a necessary project. That is, something that will mark our future in the medium term. And we’re not just talking about forests. Image | Mitchell Orr | Manuel Lopez In Xataka | The drought is so extreme that Catalonia has made a radical decision for its ecosystems: reduce rivers to a minimum

How the masses move

On July 6, 2019, as every year, a crowd was crowded in front of the Pamplonese town hall. None of the nearly 5,000 people present at the beginning of the San Fermín festivities knew that their presence and movements during the science was going to be transformed into science. A wave of people. Specifically, in the study that He has revealed That human agglomerations are governed by the same laws that operate in fluid physics, at least from a certain degree of population density. The rebellion of the masses. In a study that could have delighted the philosopher José Ortega y Gasset, studying the filling of the square in the minutes before the chupinazo, the team detected the threshold from which the movements of the individuals in the square ceased to be unpredictable and began to operate according to physical laws such as those governing fluid physics. The team studied the movements before the agglomeration, when the density of people in the square of just over 600 square meters around the two people per m²until reaching 9 people per m² in the moments of greater agglomeration. The team observed that the change in the dynamics occurred from the four people for m², when the contact between a person and those around them causes the clashes and shoves to become inevitable. It is at that time that the movement of one becomes the movement of many. In bird view. The study used images and videos compiled by the surveillance cameras located in the Pamplonesa Consistorial Square during the Chupinazos of 2019, 2022, 2023 and 2024. Details on the study process and their results have been published recently In an article In the magazine Nature Oscuring mass. Through these images, the team was able to detect periodic oscillations of 18 seconds in the attendees. Oscillations that led to small groups of people to draw circular movements that dragged with them with increasing groups of people. “Being inside the town hall square during the chupinazo (…) is a unique experience. It is the closest thing to being a tiny particle trapped in a dense, chaotic and constant movement space, with the notable difference that the rest of ‘particles’ carry red scarves and, probably, they have had lunch with more wine than recommended, ” Describe for SMC Spain Iñaki Echeverría Huarte, a professor in the Department of Physics and Mathematics applied to the Faculty of Sciences of the University of Navarra, partner of one of the authors but not involved in the study. More than leisure. Understanding the dynamics we acquire in agglomerations is not just a curiosity, it can help us save lives. The examples in which a tide of people has ended up being charged in mass events are countless. The team observed that the chiral dynamics observed in the Sanferminera massification were similar to those that operated in the tragedy of the 2010 Love Parade in Duisburg, to the west of Germany. On that occasion 21 people lost their lives and hundreds were injured. In Xataka | Three physicists sought the most dangerous sheet of paper for human skin. Not only they found it, they created a weapon Image | Travel24h

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