Japan’s madness with garbage reaches the point that, in some areas, they separate it into 45 different categories. And, despite everything, it recycles half as much as Spain

At the end of the 90s, the thousand or so residents of Kamikatsu (a small town in the Japanese prefecture of Tokushima) became a question that would change them forever: “Why do we generate so much waste?” The response led them to be the first Japanese municipality to declare themselves ‘zero waste’, to sell garbage cans and to ask their neighbors to separate their waste into 45 different categories. Waste that they carry themselves to the local clean point. One sees this and can only ask one question: have these Japanese gone crazy? And the answer is neither “yes” nor “no”: it is both at the same time. Why are we talking about this? As often happens lately, everything starts with a video. A tiktoker who resides in Japan (@nuriape_) has shown how what apparently is “jack, knight and king” works: the garbage system. And the truth is that it is curious: each building has its own waste area. The one in the video is quite broad and, as he explains, super strict. In addition, much of the processing is done by neighbors: things like cleaning the bottles and depositing them in places other than the caps or leaving the cardboard perfectly folded are part of the process. The collection, it seems, is daily. Now that the new waste rates have returned to waste management to the public debate in our country, the question is… is the Japanese system, in addition to being striking, effective? How does the Japanese waste system work? Since ’97, Japanese laws require separating glass, PET and cardboard. However, over time, the situation has become more and more complex. And, today, the collection categories range from nine in the “less advanced” municipalities to 45 in many areas of the country. And no, it is not optional: if you do not separate the garbage correctly, it will not be collected and that’s it. A garbage collection machine. As a result of these almost three decades of social pedagogy, the country of the rising sun is a well-oiled machine in terms of citizen separation and collection logistics. The problem is, well, it doesn’t help much either. Because collecting is not recycling. And Japan is the best example: its actual recycling rate is surprisingly low. While Spain (with an infinitely less obsessive system) recycles around 39%, Japan is around 20%. It is not that in our country we are here to “shoot rockets”: According to EU plans, we should be around 55% since last year. However, there is something we are doing better than Japan just as there are things we are doing worse. No overflowing containers. That’s perhaps what works best in Japan. Faced with the unequal Spanish management (because they depend on municipalities and councils), the Japanese system prioritizes segmented daily collection, precise calendars and logistical inflexibility. In addition, they also incorporate things that work in the rest of Europe and Spanish legislation contemplates, but almost no one implements: payment per garbage bag. Something that encourages waste reduction and inherently improves the system’s capacity. On the other hand, Spain does interesting things (whether they work better or worse): the main thing perhaps is that the system extends responsibility to producers. What we have in common. While Japan has a hyperdependence on incineration (75% of its garbage ends up burned), Spain has a hyperdependence on landfills (50% ends up buried), we both share a problem with single-use plastics. It is true that Japan is much more worrying (it is the world’s second largest producer of plastic packaging waste per capita), but we both have to think about the matter. Image | Jonas Gerlach In Xataka | We have been thinking for decades that plastic recycling was worth something. Maybe we were wrong

How to make a Christmas greeting by creating a family or group photo from separate photographs

Let’s tell you how to create Christmas greetings by generating a group image from separate photos. For this we are going to use artificial intelligencespecifically Gemini with its Nano Banana, being possibly the best free alternative to do this. Here, the secret is again to use an appropriate prompt in which you describe exactly what you want. We are going to tell you everything you should take into account and the prompt you should use later to create the image. You will see that it is quite simple. Group Christmas greeting with Gemini Before you start, you first have to Carefully select the photos you want to use. Try to have similar lighting, or that the same part of everyone’s body can be seen. Gemini is going to try to cut and paste all the photos together making as little modifications as possible, so keep that in mind. They should be photos that look similar. Of course, you should also know that you will be able to change their clothes to the people in the photos. Therefore, and although the ideal is for everyone to be dressed similarly, it is not essential, because then you can have Gemini put the clothes you want on them. Once you have everything, start a conversation with Gemini. Inside, first upload the photos you are going to use. Afterwards, you can copy and paste the following prompt and send it along with the photos: I want you to create a Christmas card with a family photo. I’m going to give you separate photos of people, and I want you to create a family photo where they all appear together. Under the photo you have to say “Merry Christmas”. Make the background with Christmas motifs. In this prompt you can make changes or more details. You can describe the background to be used, and also the font and text. Don’t be afraid to try, experiment and try again if the first result doesn’t work out for you. After doing so, as we have told you before, you can ask Gemini to change their clothes. This way, if people’s clothes are different in the photos, you can unify the result a little. In fact, if you have a group photo you can also simply ask them to change their outfits. Another option is to upload the group photo and then an individual photo of another person who is not there and ask Gemini to add this person. And do you remember when we told you how to turn your photos into video game scenarios either in a character from Stranger Things? Well, you can also use these tricks here to make the greeting as original and personalized as possible. In Xataka Basics | Gemini Image Editor: 16 Ways and Tricks to Squeeze Nano-banana with Google’s AI

China is merging three technologies into a single competitive weapon. In the West we continue to see them as something separate

In 2007, Steve Jobs announced that he was going to present “three revolutionary devices”: A music player with touch screen. A mobile phone. An Internet browser. Then he revealed that there were not three separate products, but one: the iPhone. China is doing Something similar to its industrial revolution. Why is it important. While Europe and the United States deal with 5G, AI and renewable energies as independent sectors that compete for resources and attention, China has merged them into a general purpose technology capable of promoting productivity in all industries at the same time. The context. The strategy “Made in China 2025“It focused on ten specific priority sectors: from new materials to transport equipment. Ten years later, China is world leader in several fields (high -speed trains, energy infrastructure …), but continues to depend on foreign technology in more sophisticated areas such as aerospace or high performance medical devices. In figures. China has reduced its Technological Import Dependency Americans and European: 351 Product categories in 2000 A 177 in 2022. In parallel, the United States and the European Union now depend on China for 953 categories of products, three times more than at the beginning of the century. What has happened. The approach evolved towards What Xi Jinping calls “new productive forces”concept that put in the center of decisions since 2023. He Third Plenary of the Communist Party in 2024 He stressed the need to integrate AI, new materials and quantum technology. The key: the deployment of advanced technologies generates domestic demand for them, creating a cycle that further enhances industrial competitiveness. Advances in communications, operating systems, clean technologies and biotechnologies improve productivity, safety and quality in other sectors. A virtuous circle. Yes, but. This bet directed by the State is face and risky. The allocation of resources can become less efficient and has obvious side effects. Although economic reforms have improved the standard of living of the middle classes, the model focused on industry and technology has damaged the mood of the consumer and its disposition to spending. The threat. China does not want to rebalance its economy towards consumption and accepts negative – national and international consequences – while pursuing its manufacturing objectives. This includes internal socioeconomic conflicts, commercial surpluses and geopolitical competence by technology. You will have to address these effects at some point, but at the moment its formula works: integrate technologies that others treat separately to create a systemic competitive advantage. In Xataka | China monopolizes rare earths. An enemy has come out of home: the smuggers Outstanding image | Josh withrs, Zbynek Burival and Solen Feyissa in Unspash

500 million years of evolution separate us from sea stars, but there is something that has not changed so much: our appetite

Hormones are molecules that exert the functions of messengers in our body. They take part in a large number of physiological processes, among which are the food and digestion of the food we consume. Among them, we know several hormones that regulate appetite and satiety. Evolutionary History A new study has analyzed The evolutionary history of bombsin, a hormone capable of transmitting the signal of satiety to our brain. This hormone had already been detected in some species of vertebrates and we know that it is capable of exercising this function in humans. Now we have found the genes that encode these hormones in very distant species evolutionarily, such as sea stars. Bombsin Bombsine was discovered in 1971, not in humans but in an amphibian, the belly toad fire (Bombina Bombina). It is a small peptide similar to those used by our own body to transmit (among other “messages”) the sign that we have satiated, molecules such as glucagon, the gastric inhibitor peptide (GIP), or the peptide similar to glucagon-1 (LPG-1). The researchers who studied the bombsin verified that, by injecting it into mammals, this also caused a feeling of satiety. This caused the subjects to reduce the amount of foods they consumed and space their intakes more over time. Needle in a haystack. In his study, the team responsible for New Research, began to study the genomes of different invertebrate animals until it ran into genes capable of encoding hormones similar to bombsin. And they found them in several equinoderms species (Echinodermata), As for example in the common sea star (Asterias Rubens), but also in hedgehogs and sea cucumbers. “It was like finding a needle in a haystack,” explained in a press release Maurice Elphick, co -author of the study, “but finally we discover the genes that encode a neurohormone similar to the stars of sea stars and their relatives.” Arbn.After that, the team studied the function of this hormone, which they called Arbn. Through mass spectrometry, the equipment was able to determine the molecular structure of the compound, thanks to which they could synthesize it and submit it to test. Thus they found that the hormone had an impact on the gastric processes of sea stars. “When I put Arbn, I saw that it caused contraction in the stomach of the sea star,” Weiling Huang addedCo -author of the study. “This, Sig would, that Arbn could be involved in stimulating the stomach retraction when the sea star stops eating. And that is precisely what I saw. When I injected Arbn into the sea stars (…) it made the stomach retract (…). What is more, arbn also delayed the beginning of the food, since the stars injected with arb those that water was injected. “ The details of the study were published In an article In the magazine Proceedings of the National Academy of Sciences (PNAS). Making historians. The study gives us new clues about how our digestive system and its tools to control its internal processes evolved. A track that allows us to ride ourselves 500 million years ago, when the last common ancestor of humans and sea stars inhabited the earth. But the finding also has significance for the pharmacological industry. In recent years they have seen the rise of various treatments based on hormone analogous substances such as LPG-1 or GIP. Compounds such as semaglutida (better known by its commercial name Ozempic) or the tirzepatida (Tirzepatida) were born as diabetes treatments but achieved success as losing weight formulas. These compounds emulate the hormones that our body secretes behind meals, hormones that fulfill the function of communicating to organs such as the pancreas that our digestive process is underway but that also transmit to the brain the message that we have satiated our appetite. Compounds such as Bombsine, Arbn, or similar could perhaps be used also In this context. In Xataka | Japanese researchers have studied how to eat less. Your verdict is extremely simple: eat more slowly Image | Hans Hillewaert, CC by-SA 4.0

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