The great battle of the Ebro is not between Murcia and Aragón, it is between the headwaters of the rivers, the large cities and the delta

The image is straight out of a movie: a team of divers diving into the cold waters of the Arija reservoir to dredge more than three meters of silt accumulated in front of its floodgates. It’s not a whim, It’s the only way to remove them.: that is, the consequence of having hundreds of infrastructures that have not been thoroughly maintained for decades. But, above all, the most striking symptom of a very deep problem: the sediments are killing, at the same time, the reservoirs and the rivers. Reservoirs due to loss of capacity (Mequinenza has lost since its opening more capacity than the sum of the last three reservoirs put into operation), rivers because deltas need sediment to stay alive. The Ebro, without going any further, needs 1.2 million tons per year. And the authorities know it. In fact, since 2003, the Ebro Hydrographic Confederation has been carrying out controlled floods in the lower section of the river to mobilize sediments towards Tortosa. The problem is that each controlled flood moves about 10,000 tons; that is, two orders of magnitude below what is necessary. It’s like emptying a swimming pool with a coffee spoon. So in the last few months, something has changed. Since November 2024, the CHE began a series of measures to try to fix it. Things like extending the discharge by two days, starting it from much higher up (El Grado in Huesca and Camarasa in Lleida) and draining Ribarroja more than usual to mobilize all the possible sediments. Will it solve the problem? It’s not clear, but it doesn’t seem like it. We have to take into account that, only in the Ebro basin, there are many reservoirs and that is an inevitable brake. Calculations say that of the five million tons that were brought to the Mediterranean before the reservoirs, only between 100,000 and 200,000 now arrive. It would take around 100 floods to reach the appropriate figures. And no, we don’t have enough water for that. So? That is the big problem, seeing what we do. We must not forget that the Ebro delta supports 20,000 hectares of rice fieldstens of thousands of inhabitants and is a biosphere reserve. The loss of wetlands and their salinization have a direct impact on agriculture, fishing and tourism. Come on: the interests are crossed and they confront people hundreds of kilometers away. We are entering a new era of hydrological wars in which we are all against each other. Image | Sinto MQZ In Xataka | The Ebro is filling with brown prawns, an invasive species that we are going to find more and more on our plates.

The US has such a big problem with Asian carp in its rivers that it has decided something extreme: electrocute them

Back in the 70s in the United States someone had an idea to control the growth of algae, weeds and parasites from aquaculture farms in the southern states: introduce four species of carp from Asia, more specifically the bighead carpthe black carpthe grass carp and the silver carp. If you know a little about biology or ever fishing you have come across a tremendous catfishwhat happened next will not surprise you: he got into a mess. Tonight we cross the Mississippi. These four voracious “natural herbicides” released in Arkansas were colonizing the river network, first ascending the Mississippi River and its tributaries and helped by floods to reach open rivers until threatening the Great Lakes located in the northern United States, this chronology of expansion and reproduction details it the United States Geological Survey (USGS). The impressive Mississippi basin or how carp left Arkansas for the Great Lakes. Via Shannon1 They are true titans. Carp are a great example of adaptive management of invasive species: they are able to withstand different environments, can live for several decades and lay millions of eggs. Carp are in their element at the bottom of lakes, ponds or rivers and they swallow everything, since practically any organic matter will do, from plankton to small fish. So they gobble up food that native species could eat. Destination: Great Lakes. Present in every state of the continental United States, the northern Great Lakes are a destination as desirable as it is devastating. In addition to the damage to the ecosystem, a large-scale invasion would cause a catastrophe to the local economy while decimating the fishing industry, which generates approximately 7 billion dollars a year. So the Administration, scientists and environmentalists have been drawing up plans for years to keep them out of there. The grass carp has already been sighted in the lake erie. How many Asian carp can you catch? The first measure they implemented was to encourage the increase of their fishing, with tournaments such as the Redneck Fishing Tournament so that those who participate try to capture as many as they can. The problem is that fishing is not enough to decimate a species with such a reproductive desire. Michigan DNR Aquatic Species Expert Seth Herbst concludes that It would be necessary to get rid of 80% so that its population does not recover. If you can’t handle it, eat it.. In 2022 the Illinois Department of Natural Resources had an idea: use large-scale commercial fishing as an aquatic management tool to reduce population pressure. In other words: encourage human consumption of carp, which renamed “Copi”. Carp meat is rich in protein and is consumed in China and other Asian countries, so why not in the United States? The campaign is still alive and well (like the tents): on the campaign website there is a long list of recipes and restaurants in different states where you can try them. And speaking of recipes, this one from “Can’t Beat ‘Em, Eat ‘Em” (if you can’t beat ’em, eat ’em) gives more ideas for cooking this and other invasive species. The delicious Asian carp taco Chicago’s electric wall. Since 2013, the United States Army Corps of Engineers A series of permanent electric barriers are operational in the Chicago area waterway system with a direct current field of 2.3 Volts per square inch (about 0.35 Volts per square centimeter). This spark does not kill the carp, it only paralyzes them so that they do not advance and remain downstream. Of course, this method is not infallible: changes in water levels or the salt used for defrosting can alter the conductivity of the water and, therefore, the effectiveness of this method. In addition, smaller specimens can escape into shelters that form between boats. And one obvious thing: it affects carp and non-carp fish, thus altering their behavior. And yet, it continues to be used. Looking for the infallible system against carp. In the river basins of Illinois they have tried walls of bubbles made from a pipe, thus obstructing their vision. Its sound also serves as a warning. The problem? That also affects native species. And one step further, a variant in the form of cavitation curtains in which the bubbles are broken to disturb the fish. This method was the winner of the contest Carp Tankwith a succulent reward of $500,000 to whoever came up with the definitive idea. Brandon Road Dam Project The chaos zone. Since electricity is not 100% infallible, in 2024 they allocated 858 million dollars to build the dam project. Brandon Road Interbasind which has everything: improved electric barriers, acoustic deterrents (the silver carp jump when they hear the noise of the engines) and bubbles to obscure their vision. The objective is to prevent the carp from crossing the dam at all, minimizing damage to the rest. In Xataka | The Iberian Peninsula is being invaded: more than 1,200 exotic species have come to stay In Xataka | The coypu, one of the 100 most harmful invasive species in the world, is at the doors of Barcelona Cover | Flickr

It’s called Sirius-82 and it has turned rivers into modern minefields

On a front where everything seems decided by trenches, artillery and drones In heaven, there’s another war going on moving in silenceclose to the water and away from the spotlights. The Dnieper River, turned into a natural border and lifeline, has been filled with small battles for islands and passes that can change the balance of an entire region. And in that fight, Russia has just introduced a novelty explosive. A river as a front. The war between Russia and Ukraine remains bogged down in a wear balancewith Ukrainian defenses slowing advances and much of the attention focused on Donetsk, but beneath that noise there is another battle less visible and very strategic: control of several islands in the Dnieper River. Ukraine dominates these islands and the western shore, while Russia controls the eastern shore and tries to seize them to facilitate assaults across the river and, in perspective, sustain operations that once again put places like Kherson at risk. On that river board, where each crossing is a potential suicide, technology appears again as the shortcut to gain margin without paying the human price. Sirius-82. The broadcast videos by the Russian Army show a new unmanned surface vehicle, Sirius-82which begins to operate in the Dnieper with a much more pragmatic than sophisticated approach. From what can be seen, it is compact, about two meters long, and is oriented towards short duration missionsprobably with electric and battery propulsion, which fits the river environment and quick round-trip tasks. It does not look like an advanced autonomous system, but rather an instrument of “useful warfare” built to work now, here and now, even if it is crude and limited. A YaRM Modular charging and FPV control. The design suggests modularity, with the ability to carry cargo on the deck and also within the hull, making it an adaptable platform to different missions without redesigning the vehicle from scratch. In one of the recordings you can clearly see how he has two YaRM anchored river minesweighing about 13 kilos each, placed on the deck and released by mechanical actuators that release them into the water. Control, furthermore, cannot be more “old school”: an operator directs it with a joystick like those of FPV drones and monitors the camera on a laptop, a simple recipe that reduces costs and speeds up deployment, but that in real combat may be enough. River mining: the trap. The first function shown is the placement of YaRM mines in shallow watera Soviet resource intended for rivers and canals, usually anchored just below the surface to threaten light vessels. Russia would use them to attack Ukrainian resupply boats moving towards the islands, which is precisely the weak point of any forward control on a river: maintaining supplies and rotations under fire. Ukraine, in turn, uses similar mines to stop or destroy Russian attempts at rapprochement, and the result is an environment in which the Dnieper ceases to be a natural barrier and becomes a dynamic minefield, where the risk is not on the horizon, but under water. Demining and sacrifices. The other side of Sirius-82 is that it can serve to clear mineswhich is just as important in a river war where each step requires opening a safe corridor. A video shows it as a sacrificial platform, advancing until it detonates a Ukrainian mine to clear a passage before a manned boat enters, a brutally logical concept if lives are put before material. Furthermore, it is mentioned a common Russian technique demining by explosive charges with delayed fuses launched at intervals to detonate nearby mines, and the Sirius-82 could do that job without exposing a crew in the middle of a river with no coverage. A type of solution that only requires repetition and the absence of remorse when losing the vehicle. Kamikaze attacks and assault support. Beyond mining, the system could be used like kamikaze drone against Ukrainian vessels, ramming them and detonating a charge on board to destroy both, taking advantage of their low profile and the discretion of electric propulsion. It is also suggested a more “logistical” use in support of assaults on the islands, carrying supplies or even evacuating wounded if it is adapted for larger loads, something that would fit with a positional combat where the islands function as small bridgeheads. All in all, the Sirius-82 does not seem like a superweapon, but rather a tool to win the daily battles on the front, where each box of ammunition and each water crossing decides more than a major offensive. The pattern of war. What the appearance of Sirius-82 reveals is a trend of which we have talked before: Russia and Ukraine are pushed by personnel shortages, casualties and a very long front to replace humans with machines in tasks where the risk is disproportionate. And the interesting thing is that this replacement does not necessarily come with advanced autonomy and latest generation sensors, but with “primitive” systems but perfectly functional, built quickly and with a clear objective. The underlying message is that modern warfare does not always reward the most sophisticated, but rather what can be mass produced and deployed, what is sacrificed without hesitation and what solves a specific problem this week. A river that is no longer geography. If you like, Sirius-82 is a symptom of how the Dnieper is transforming in a space of access denial on a tactical scale, where mines, drones and remote control They replace the classic patrols. It is small, cheap and expendable, but that is precisely why it is dangerous: it allows the river to be planted and cleaned with less human risk, and it maintains constant pressure on the islands that Ukraine controls. And the more these platforms become normalized, the more likely it is that river combat will evolve into a “micro-robot” war who decide the terrain meter by meter, until crossing the nation’s largest river is less a military maneuver and more a technological lottery. Image | Telegram In Xataka | Ukraine … Read more

make the donkey in rivers

We know firsthand that China is increasingly established in the automobile field. More and more cutting-edge models arrive here in Europe, although nothing to do with what we can see in China. And some of them They already float in the water and they navigate between rivers. Two manufacturers have just starred in river crossings that have attracted all the attention, although with different approaches and results. What has happened? Chery’s Jetour Zongheng G700 SUV has become the first vehicle in its category in cross the Yangtze River. The crossing took place on October 16 from Heisha Zhou port in Wuhu city, where Chery is headquartered. The SUV traveled 1,480 meters in 22 minutes, floating at a speed of about 7 km/h while dealing with currents of between 5 and 10 km/h. The car arrived without problems at the port of Nanlong, on the other side of China’s longest river. The technology behind the show. The Zongheng G700, which will be launched in China on October 19 with a price between 45,000 and 56,000 euros, boasts a painted body without holes, an active air circulation system and an 800V architecture with silicon carbide propulsion. During navigation, a six-axis gyroscope continuously adjusts the balance of the vehicle to maintain stability. The SUV has a 2.0-liter turbocharged hybrid engine with a total power of 560 kW (751 HP) and 795 Nm of torque, with a combined range of 1,400 km. BYD has been at this for more than a year. Chery is not the first Chinese manufacturer to demonstrate that its cars can sail. BYD has been showing the amphibious capabilities of its Yangwang U8a high-end mammoth SUV that can float and move through the water naturally. The system allows you to navigate up to 3 km/h and stay afloat for 30 minutes, thanks to a protection IP67 for the entire car and IP68 on its key components. When the driver activates water crossing mode, the vehicle monitors depth and other parameters, raises the suspension to the maximum, closes the windows and adjusts the climate control. Had an unfortunate real show. In September, during the flooding of Super Typhoon Ragasa in Zhuhai, a driver of a Yangwang U8 crossed a completely flooded street generating a wave so powerful that it even broke shop windows and caused damage to local businesses. The images showed broken glass and metal blinds deformed by the force of the water. The police summoned the driver for questioning and the affected merchants filed complaints. An ironic case, since the U8 is designed precisely for aquatic emergencies, not to destroy everything in its path. Marketing with risks. These river demonstrations are, above all, spectacular marketing exercises. Chinese manufacturers are turning rivers into floating showrooms to show off their technological muscle. Emergencies, not adventures. Both BYD and Chery insist that these amphibious functions are designed for emergency situations: floods, flash floods or forced crossings in remote areas. In fact, BYD recommends Take the vehicle for inspection after activating the float mode. The Yangwang U8, with its 1,200 horsepower, four independent electric motors and 1,000 km range, is positioned as an extreme luxury SUV, not as a recreational amphibian. In Xataka | Spain is emerging as the destination of the next BYD factory, according to Reuters: the next chapter of its advance in Europe

In 1971 the Soviet Union decided to end the droughts. So he started throwing nuclear bombs into the rivers

The story took place in the 1970s, when the Soviet Union launched one of the most ambitious and far -fetched engineering projects in its history: diverting the course of the great Siberian rivers so that, instead of flowing towards the Arctic, they would transport its waters to the arid regions of the south, such as Central Asia and the south of Russia. The problem was the solution to achieve it: they turned to “Pacific” nuclear explosions To dig colossal channels. The impossible epic. As we said, to carry out such a plan, Soviet planners did not spare in extreme methods. The most emblematic episode was the experiment called Like “Taiga” of 1971, in which three equivalent nuclear devices To the Hiroshima bombs They triggered simultaneously underground to create a channel that connected the basins of the Ríos Pchora and Kama. What happened? That the only thing was the known today Like Nuclear Lakea body of still radioactive water in the middle of the boreal forest, and an ambitious dream that ended up being a monumental failure. Despite the use of low -fission explosives, The detonations They were detected until In Sweden and the United Statesunleashing international convictions for violate the treaty of partial prohibition of nuclear tests. Soviet logic. The idea of redirect rivers It was not really new: already at the end of the 19th century, thinkers as Igor Demchenko They dreamed of flooding the depressions of the Caspian and the Aral to improve the climate. Under Stalin and, later, during the Cold War, the project acquired A new impulse. For the Soviets, the immense water flow that flowed to the uninhabited north was an intolerable waste. On the other hand, taking it to the south could make Central Asia an agricultural vergel, save the dying Aral Sea and, incidentally, affirm the Soviet power over the Central Asian republics. With the support of almost 200 scientific institutes and dozens of thousands of peoplechannels of up to 1,500 km were planned to divert 10% of the water from the OB and Irtish rivers to Kazakhstan, Uzbekistan and Turkmenistan. Inspired by feats like Roman aqueducts and convinced that man had submit to naturethe leaders planned to complete the titanic work For the year 2000. The fall of the hydraulic myth. However, the magnitude of the project caused an unprecedented reaction. During the 80s, the opposition of scientists, writers and intellectuals became one of the First environmental campaigns massive in the history of the USSR. Figures like the hydrologist Serguéi Zalyguin They denounced not only the exorbitant cost and the low scientific support of the plan, but also the iEcological mpactos Catastrophic that would bring: climatic alterations, loss of unique habitats, flooding of cultural sites, and even possible changes in Siberian ice formation. The final blow came with the sadly famous Chernobyl disaster In 1986. The tragedy, which evidenced the risks of nuclear power Badly managed, he diverted resources and political attention, and just four months later, Mikhail Gorbachov formally canceled the river investment plan. For some, it was a response to environmental pressurebut for others, simply the recognition that the USSR already I couldn’t pay for it. Zombie idea. Although the project seemed buried together with the Soviet Union itself, The BBC counted that his spirit has persisted. Throughout the decades, figures such as former Moscow Yuri Luzhkov have advocated for retaking it. And in February 2025, two Russian scientists returned to Defend the idea In a National Journal, arguing that the current technical advances and the geopolitical reorientation of Moscow made Asia more viable. Some have even suggested that reducing the discharge of warm water to the Arctic could mitigate climate change, although studies such as The Oceanographer Tom Rippeth They warn otherwise: altering the flow of rivers could destabilize the stratification of the Arctic Ocean and accelerate the thaw. Resource as identity. If you want also, beyond its technical or ecological justifications, the river reversion project represents a vision deeply imperial: Russia as a power that dominates not only territories, but vital resources. The possibility of transferring water Towards Chinafor example, would fit with the extractivist model that has defined the country for centuries. As Historian Paul Josephson pointed outit was a form of internal colonization, to “modernize” Central Asia through public works and Slavic settlements, imposing the seal of the Soviet state into the landscape. That mentality lasts and, for some, Siberian water remains an underutilized treasure that must one day channel towards economic development and political power. Radioactive legacy. It is the last of the legs to analyze for the events that took place. Today, The nuclear lake It remains one of the few visible vestiges of this colossal hydraulic fantasy. Although radiation levels have decreased, some areas remain dangerous. The lake, surrounded by mounds of earth and oxidized warning signs, is visited by curious Like blogger Andrei Fadeevwhich described the BBC as “a beautiful place, apparently quiet, but with invisible scars.” As allegory, the landscape encapsulates the ambition out of context of the project: transform rivers with atomic pumps, fold the will of nature with underground explosions and turn water into a geopolitical domain tool. Surprisingly, half a century later, the idea has not died at all. Image | Dmitry TerekhovSentinel In Xataka | In 1958, the US wanted to simulate a nuclear attack against the USSR: he ended up releasing a bomb on the coast of one of his own cities In Xataka | In the 50s United Kingdom he had an idea to bend the pulse to the USSR: a nuclear bomb with live chickens

Our rivers have been contaminated with medications for years. The EU has a solution: let the pharmaceutical companies pay

When we read that one of the great environmental challenges of our time is the state of our rivers, our imagination travels directly to the fecal waterindustrial pollution or, lately, microplastics. In what we don’t usually think It’s in the medications. But the problem is real and the European Union is determined to solve it. How can medications ‘contaminate’? Drugs (whether for medical or veterinary use) have a very long life after consumption. And, inevitably, a good part of the medications end up being expelled from the body and entering wastewater. From there, despite the efforts of treatment systems, they reach rivers, lakes and seas. An increasingly solid scientific consensus. Although it is difficult to get a complete idea of ​​the impact of this type of pollution on the environment, the investigations that are appearing They make it clear that it is very far from being an anecdote. In fact, at least 631 pharmaceutical substances (human or veterinary) have been found in more than 71 countries on five continents. Many of them, at levels higher than those considered safe. In 2022, the CSIC analyzed 258 rivers and, after cataloging the Manzanares River as “the most contaminated by drugs in Europe”, warned that we were in the face of “a global threat to the environment and human health.” “Global threat (…) to human health”? Are we not exaggerating? In the case of antibiotics, to use an example we are all familiar with, this is clearly seen. We have been warning for years that the abuse of these medications leads to the emergence of multiresistant bacteria. That’s true on the consumption part, yes; but also in the part in which enormous quantities of them are dumped into nature every year (with the problems that this causes for ecosystems and the risks that it poses). Why is this news now? Because the European Union wants to take action on the matter and, as Oriol Güell explainsis introducing a whole new battery of measures in the renewed Directive on Urban Wastewater Treatment. The goal is to “reduce the compounds discharged into the environment by more than 80%”; the environment, the introduction of a whole series of “quaternary treatments” (ozone, activated carbon, new membranes, etc…) in the treatment systems. The problem? that the EU wants them to pay the affected industries: above all, pharmaceuticals and cosmetics. An idea that the sector has not liked. As expected, the application of the “polluter pays” principle in these terms has not pleased the sectors involved. Above all, because of the costs. According to the employers’ associations of both sectors, the application of the European directive would lead to an increase of about 500 million euros in Spain alone. And, beyond the expected conflicts between companies and administration, it is true that the movement is paradoxical. Not because it is not reasonable to charge the costs of water treatment to those who produce them; but because just a couple of years ago, Europe announced its intention to bet on having drug factories on the continent (and thus reduce its dependence on international supply lines). Towards a culture of responsible drug use. Be that as it may, in the end we always return to the same thing: the drug industry is heading straight into a very complex crisis in which health, economic, environmental and cultural issues intermingle so as not to lead us to a dead end. One in which we risk our health, the future and our lives. Image | manuel mv | Joshua Goge In Xataka | The Ozempic boom is so big that US pharmacies have decided to do something unusual: start manufacturing it themselves

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