We thought this bug was a pig. Now we know that it was two meters tall, weighed a thousand kilos and was a killing machine related to whales.

Almost 200 years ago, a paleontologist found some completely improbable bones. They thought about it a thousand times, tried to find some sense in it; but everything ended in the same delirious image: that of a huge pig with the capacity to destroy everything in front of it. And that’s what we called him for decades: the ‘pig from hell’. What we have just discovered, two centuries later, is that we know almost nothing about them. Now they are even more terrible. But what really is a ‘hell pig’? It is the popular nickname by which entelodonts are known; an extinct family of large prehistoric mammals that lived about 30 million years ago. The bug was described for the first time in the 1840sbut it was in the early 20th century that paleontologists assumed it was closely related to pigs or peccaries. It was not something irrational: on a strictly physical level, entelodonts looked very similar to modern-day pigs. Two meters tall, weighing more than a thousand kilos and jaws capable of crushing bones, but pigs nonetheless. With “crushing bones” we are falling short. Recently, a team from Vanderbilt University could examine in detail the teeth of these animals and, thanks to three-dimensional models of dental microwear, they have managed to turn around everything we thought we knew about the role of these animals in North American ecosystems 30 million years ago. Your conclusions they leave no room for doubt: “the largest specimens were capable of crushing bones with an efficiency similar to or even greater than that of lions and hyenas.” Luckily, they weren’t very smart; And, according to the researchers, “it has a brain-body relationship similar to that of reptiles, so they were very unintelligent creatures.” A complex story. At first, experts thought that this monstrous animal was a born hunter. Then, partly because of this familiarity with pigs, they came to the conclusion that they were omnivorous animals, capable of eating small animals and carrion. Now, thanks to this team, we know that they were most likely at the top of the food chain of their ecosystems. This, in fact, raises the possibility that different species (or subspecies) occupied different ecological niches. However, there are curious things. To begin with, entelodonts have nothing to do with pigs. In fact, they are closer to whales and hippos than anything else. But, above all, it shows us the difficulties we continue to have in understanding our past. Little by little, we are understanding that if our way of looking at the past conditions the futureour ability to understand what the world was like 30 million years ago will radically change many things we think we are. And the best thing is that, even though I get melancholic and retrospective, everything we know makes it clear that the “pig from hell” is more infernal than ever. Image | Carnegie Museum of Natural History In Xataka | The deaths of cows, reindeer or rhinos are not a mystery: they are the consequences of a curse, that of “large animals”

China has just completed the world’s tallest dam. And what stands out the least is that it is as tall as a skyscraper

China has a beastly capacity to create pharaonic structures. Impossible roadshighways with infernal ‘knots’, very complex tunnels and one ridiculous amount of bridges so functional and essential to connect areas like ostentatious. But among all his civil engineering works, the ones that are most striking to me are the dams. And, after the largest in the world, now They have one that is as tall as a skyscraper. It is the Zhenjiang pumping stationand is key to adding even more renewable energy to your accountant. Figures. The name is “Zhenjiang/Jurong Pumping Station” and, located in Jiangsu province, it has become the latest milestone in Chinese energy engineering. The project began in 2017 and, as is customary in almost all of these infrastructures in the Asian giant, both its dimensions and construction times are surprising. In these eight years, they have built the highest pumping dam in the world, 182 meters high, equivalent to a 60-story building. Apart from the height, its volcano shape is striking, with a reservoir at the top capable of storing up to 17.07 million cubic meters of water. Context? What 6,800 Olympic-sized swimming pools have (okay, it’s equally difficult to imagine the number). Bowels. It’s not just imposing on the outside. Its engine room is 800 meters deep and has dimensions of 250 meters long, 60 meters high and another 25 meters wide. In this room are the six mixed turbines and, in total, the project has established a dozen records in the sector. Its role in renewables. It is estimated that the investment has been about 9.6 billion yuan, about 1.3 billion euros, and all to feed more than 360,000 homes. Each of the turbines generates 225 MW for a total of 1.3 GW of installed power. Thanks to both the dimensions of the turbines and the difference in level and force of the water, it is estimated that it will consume 1,800 million kWh annually during pumping and will generate 1,350 million kWh during discharge. It is a consumption/generation difference of 25% and, although it is not a figure that attracts attention, it is a milestone, since current pumping (or reversible) installations require hydraulic jumps of about 400 meters to operate under the same conditions. The turbines at the Zhenjiang plant do so with a head of less than 200 meters. That is, it is optimized for low gradient conditions, but maintaining a high volumetric flow. In summary, It’s like a giant battery, but with water. During low demand hours, the plant moves water to the upper reservoir and, during peak consumption, releases it, passing it through the turbines at high speed and generating electricity in the process. According to estimates, it will save 140,000 tons of coal per year, which represents 349,000 tons of CO₂. One more in the Yangtze. Despite everything the plant represents in terms of civil engineering and its role in renewablesthe greatest achievement of this plant is that it has been shown that it is possible to build massive storage systems if artificial elevations are created. In flat areas with unfavorable orography, Zhenjiang demonstrates that pumping structures can be created to help achieve decarbonization objectives without depending so much on wind and solar power. Wang Chenhui, director of the Development Department of State Grid Zhenjiang Power Supply Company -responsible for the dam-, assures that “at full operation it will provide approximately 2.7 million kilowatts of bidirectional power regulation capacity, relieving pressure on the electrical grid during peak load periods.” It will be more help for Jiangsu province than this summer consumed 6% more electricity than in 2024, reaching 156 million kilowatts. And also in the Yangtze are the mammoth dam of the Three Gorges and the next largest dam in the world. The one in Zhenjiang is not so huge nor does it generate as much electricity, but it is the highest in the world and, as we said, a demonstration that, if the terrain is not good, you can always build a huge pool at 190 meters high. Image | Ministry of Water Resources of the People’s Republic of China In Xataka | China has built the highest bridge in the world and has done what it must: turn it into a show

They have found a way to turn tall buildings into batteries. And that makes Benidorm our best asset

The sun doesn’t always shine and the wind doesn’t always blow, what do we do if there is no renewable energy when we need to turn on the lights? Normally, pulling lithium batteries either pumped hydroelectric plants. But cities that build vertically like Benidorm have another untapped option. In short. A comprehensive University of Waterloo study has shown that the height of buildings can be used to create a system of gravity energy storage. An idea that transforms cities built in height into a huge device to store and release energy at will. Mechanical batteries. The concept is, in essence, very simple. It is made up of a heavy mass (concrete or steel blocks), a system of pulleys and cables similar to that of an elevator, and a motor that also works as a generator. The operation is as follows. When there is a surplus of energy, for example at midday, when the building’s solar panels are at full capacity, the motor uses that electricity to lift heavy dough along a vertical gaplike that of an elevator. Electrical energy is converted into potential energy. When electricity is needed and renewables are not producing, at night or on a day without wind, the mass is dropped in a controlled manner. The force of gravity does the rest: the descending weight moves the generator, which converts the potential energy back into electricity ready to use. Tested successfully. The researchers propose this system as the heart of a hybrid energy ecosystem integrated into the building itself, which includes photovoltaic panels on facades, small wind turbines on the roof and backup lithium-ion batteries. As pointed out PV Magazinecompanies such as the Scottish Gravitricity have already demonstrated the viability of this technology with functional prototypes and have full-scale commercial projects of 4 and 8 MW underway. Energy is generated with the sun and the wind. Gravity acts as the main battery for daily storage, managing large charge and discharge cycles. Is it viable? To test whether their idea was more than just an interesting theory, the University of Waterloo team ran a massive simulation. They analyzed 625 different building designs, varying parameters such as height, the shape of the floor plan (more square or more elongated) and the energy efficiency of the building. The results are very promising. The system (facade solar panels + small wind power + gravity storage + a battery support) achieved a levelized cost of electricity of between 0.051 and 0.111 dollars per kWh. This figure is very competitive, and even improves the costs of other renewable energy systems integrated into buildings located in areas with moderate solar or wind resources. And taller buildings with larger floor plans benefit the most, so Benidorm It is our best asset. Image | Diego Delso (CC BY-SA 3.0) In Xataka | Finland has found a cheap way to store energy all winter: a tower of 2,000 tons of sand

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.