analyzed

A study has analyzed which cars are the ones that lose the most after five years and the clear answer: electric

by

You were young but there was a day when buying a Tesla was a round business. The demand was such and the shortage of vehicles so high that There were those who were willing to pay more money For a used tesla than to pay 10,000 euros less, commission it to the company and wait a few months upon arrival. The funny thing is that you were not so young. It was something that happened in 2022. First in the United States and then in Spain. Who was going to tell us now that the company dealt with a painful salesin which it is difficult to discern how much there is temporary with the renewal of the Tesla Model and and how definitive. Especially in countries where the issue is very sensitive, Like Germany. But, obviously, this is not the usual situation. In fact, if your idea is to buy an electric car and change it shortly (three/four years) it is very likely that it is a bad decision. Because, in general and except for very specific circumstances such as the previous one, the electric car is the type of car that is most devalued. A car for many years If you are thinking of getting an electric car, there are two especially interesting formulas. The first is called Renting. Although it is a formula in which more money is paid than with a share of a loan for the purchase of a car to use, it is a good option if you are not very sure of whether the electric car is for you and you do not want to mortgage in the very long term. The second option is to buy an electric car and You keep it as much as possible. If a car does not give problems this is always the best formula to save money but, in the case of a concrete electric car of an electric car, the more kilometers do, the more they fill the battery at low power and more time keep the car the best result will give. This is because yes, How we tell you in this articleyou can load the car at home, you can be saving about five times more money than with a day -to -day gasoline car in fuel consumption. Especially if the use is intensive or almost exclusive in the city. To this is added that, with the passage of the kilometers and the years, reviews, oil changes, filters and, ultimately, replacement of all types of mobile parts that in an electric car are non -existent, are accumulated in a combustion car. A taxi driver can confirm that it is good savings. But the electric car is a problem if you want to change vehicles or technology after a few years. Because, according to the portal ISEECARSspecialists in second -hand sale in the United States, the electric car is the type of vehicle that is most devalued. According to its calculations, an electric car loses 58.8% of its value after five years. The figure contrasts with those collected for other types of vehicles. A hybrid loses 40.7% From the value of the last car a five years and, on average, a car loses 45.6% of its value. The data leave the sale portal and the cars sold there, monitoring 800,000 vehicles sold between March 2024 and February 2025. If the car is not electric, the type of car that is most depreciated is the luxury car. When there is a combination of both values, the result is fateful. The Jaguar I-Pace is the car that has suffered the most depreciation in the last five years, reaching 72.2%. It is followed by the BMW 7 Series (67.1%) and the Tesla Model S (65.2%). Among the 10 cars that depreciate the most we find the Nissan Leaf or the Tesla Model X. The rest are luxury vehicles. It makes a lot of sense Although it may seem bad news, the high depreciation of an electric car makes a lot of sense. And, in fact, the data is better than in previous years. In ISEECARS They point out that the same study in 2023 signed a depreciation of the electric car five years ago 49.1%. It was a lower figure because The price of second -hand cars shot During the Covid-19 crisis and the posterior Shortage in the supply chain. The figure, however, remained the highest of any other type of car. But in 2019 depreciation reached 67.1%. That this figure has dropped out that more buyers are willing to get a second -hand electric car. A sign that there are more electric cars in the market and that the plaintiffs trust more in technology. Although Buy a second -hand electric car It should not be very different than doing it with a combustion car (in fact, in terms of mechanics, it should be easier), it is logical that those who have never had an electric car are reluctant to enter technology with the acquisition of a second -hand vehicle. In addition, the rapid innovations that the sector is living while more competitors arrive that reduce prices cause cars to lose greater value against combustion cars. The promises of new most ambitious batteries and RECHARGES TO RATIMOS ALMOST IMPOSSIBLE TO IMAGINE They are especially relevant to those who are willing to jump into the electric car but prefer to wait a bit to the new models. Cars now bought are devalued to a greater extent because the qualitative leap of buying a new car will be higher than changing a gasoline used by a new one. It is normal that with technology in full development, the current car is obsolete more quickly. It is something that happens in all types of markets Until a technology reaches maturity. Photo | HAVEREDAS In Xataka | We do not trust the second -hand electric car: its value does not stop falling and it is a problem for the industry

Some researchers have analyzed what the summaries of scientific papers say. There is enough “clickbait”

by

Academic articles, Papers reviewed by pairs published in scientific journals, they are One of the pillars of science nowadays. These articles usually have a more or less defined structure, with introduction, results, conclusions and discussion, in addition to a section dedicated to the methodology used. An element that never (or practically ever) is missing in this type of articles is abstract. Abstract It is the term with which a kind of summary of the content of the article is known. It is a key piece that has the objective of serving as a bibliographic guide to those who are looking for a study, so this short text must answer properly to the question What is this article going? But beyond this basic function, the abstract Often fulfills the function of Summary of the articleincluding information on methods, results and conclusions of the experiment or study. Many of the scientific articles are limited access, protected by a Paywallthe price of a single article can be several tens of eurosbut summaries are available in open. Scientific articles, including this short introductory text, are subjected to several editorial and scientific reviews, so it would be expected that the abstracts be faithful representations of what the article and the study carried out. The problem is that sometimes, They are not so much. In the late 90s, a group of researchers analyzed the existence of discrepancies between the summaries of the articles and their content. The team analyzed more than 260 articles (44 pieces by six scientific relief journals) published in 1996 and 1997. They studied two ways in which these summaries could be incorrect, or by inconsistencies with the body of the article, or by the omission of relevant information. The results showed variation in the results according to the magazine (they found that between 18% and 68% of the articles presented problems). They concluded, in their own abstractthat the inconsistent or absent data in these summaries were “common, even in the medical magazines of great circulation.” The study was published in 1999 the magazine Jamaone of the publications analyzed in it. 25 years have passed since the publication of the magazine’s study Jama and almost 30 since the publication of some of the articles analyzed. Science has changed a lot in those 25 years. However some subsequent studies They indicate that this problem persists. In 2016, a group of researchers made a compilation and analysis of the studies carried out in this field. This literature review, published in the magazine BMC Medical Research Methodologyhe found that the median “level of inconsistency found these studies was In 39%although the variability was high: it ranged between 4% and 78%. Since not all errors are equally severe, this review was fixed on the studies that discriminated against the serious inconsistencies of the milder. They observed that the median in this case was somewhat lower, but still considerable, of 19%. Subsequent studies, like one posted this year In The magazine American Journal of SurgeryThey continue to show the existence of this trend in scientific literature. What happens then? Are scientists falsifying your data? Or are we simply witnessing an important accumulation of errors? We know that the summaries of the articles are determinants when receiving quotes of other academic articles and that This metric is key for the evaluation of scientific work for the authors. But the publication of an article may sometimes depend on its results being novel. That is why there is an incentive to emphasize some results and clarify them later. A non -significant result can cause the editors of the magazine or future readers to lose interest in the article, regardless of the real quality of the study. The call publication bias (which refers to the fact that studies with different results are overrepresented in scientific literature) is also the result of this interest in the novelty. Clickbait academic The titles of the articles have also been subject to scrutiny in recent years. Consciously or unconsciously, a striking holder can be decisive when we are more or less interested in a study. In 2016, A study Posted in the magazine Frontiers in Psychology It echoed this phenomenon. The analysis observed how the way in which the headlines affected were affected within reach of the study. Gwilym Lockwood, author of the study, analyzed More than 2,000 academic articles And he observed that the titles that enunciated something in a positive frame had better metrics than the average. On the other hand, he also found that the works that resorted to speech games showed a worse performance. The titles containing questions, meanwhile, did not deviate from the average significantly. The problem of abstractsIt is one of many to which the scientific publishers. Some publishers pressed By scandals of various typesfrom the “Mills of scientific articles”Even the problems with rates charged by publication or access to their contents. The artificial intelligence It is one of these problems, but perhaps also a potential solution. In recent months, and after the occasional scandal, scientific publishers They have been integrating The artificial intelligence tools in the scientific publication, beyond the work that these tools may have developed in the development of research itself. Artificial intelligence has the capacity, among other things, to generate more “objectives” summaries or to detect and correct possible errors and discrepancies between texts and summaries. In Xataka | This is how bad science infiltrates the international scientific debate: they are not just the great scandals, more than 50,000 questionable articles are incorporated every year Image | Sonia Radosz

Some researchers analyzed 280 samples of bottled water. Only one of the brands was microplastics free

by

Better flavor and smell and health reasons. Those are the two main reasons why people drink bottled water, according to A study of the Autonomous University of Barcelona. Spain is, in fact, The third European country that consumes more bottled water (up to 107 liters per inhabitant). That clashes with one thing: that bottled water is not only Much more expensive than tap waterbut now we know that it also has micro and nanoplastic in amounts much greater than those estimated. The original study. Some researchers from Columbia University They analyzed Three popular bottled water marks in the United States (whose names names have not transcended) in search of micro and nanoplastic. To do this, they used a new technique called Raman stimulated dispersion microscopy Based on probe samples with two tuned simultaneous lasers to resonate specific molecules. Analyzing seven common plastics, the researchers developed an algorithm to interpret the results. According to Wei Min, co-inventor of the technique and co-author of the study that concerns us, “one thing is to detect and another to know what you are detecting.” The findings. On average, this study discovered that a liter of bottled water contains 240,000 detectable plastic fragments, between ten and 100 times more than previous estimates. Specifically, the researchers claim that they found between 110,000 and 370,000 plastic fragments in each liter, of which 90% were nanoplastic. In that sense, it is important to remember the difference between micro and nanoplastic: Microplastics: those whose size varies between 100 nanometers and five millimeters. Nanoplastic: those whose size is equal to or less than 100 nanometers. The most frequent plastics. To anyone’s surprise, one of the most common plastics was the Terephthalate polypropylene, better known as PET. It is the material of which many bottles are made. “It is probably introduced into the water when pieces are detached when the bottle is squeezed or exposed to heat,” says the researchers, who cite another study that suggests that they can also detach themselves when the cap repeatedly opens and closes. Usual. And although the presence of PET is common, this plastic is overcome by the polyamide, a type of nylon that “probably comes from the plastic filters used to supposedly purify the water before bottling it,” says Beizhan Yan, a researcher of the study. Other common plastics found by the researchers were polystyrene, polyvinyl chloride and methyl polymetacrylate. And the rest? The technique used contemplates the seven most common plastics, but there are many other plastics. According to exposes Columbia University, “the seven types of plastic that researchers sought only represented about 10% of all the nanoparticles found in the samples; They have no idea what the rest are. If all are nanoplastic, they could be dozens of millions per liter. ” And what about those sold in Spain? That’s what he wanted to find out A study by CSIC and the Global Health Institute of Barcelona. They have developed a technique To quantify particles of between 0.7 and 20 micrometers, as well as the chemical additives released to the water and, for this study, analyzed 280 samples of 20 trademarks of commercial water. Only one of the brands did not contain microplastics, but all, the 280 samples, contained plastic additives. More specifically. The result is that, on average, a liter of water contains 359 nanograms of micro and nanoplastic, an amount comparable to that obtained in the tap water found in a previous study made by the same group. “The main difference we find is the type of polymer: in tap water we find more polyethylene and polypropylene while in bottled water we have mostly detected polypropylene terephthalate (PET), although also polyethylene,” said Cristina Villanueva, a researcher of the Isglobal and Author of the study. Quite microplastic. Considering that we drink two liters of water a day, the authors estimate “an intake of 262 micrograms of plastic particles per year.” With regard to additives, 28 plastic additives, mostly stabilizers and plasticizers have been detected. According to the researchers, “our toxicity study showed that three types of plasticizers had a higher risk to human health and, therefore, should be considered in risk analysis for consumers.” Images | Jonathan Chng in Unspash In Xataka | The US has decided to leave paper straws because everyone hates them. The problem is the alternative: plastic In Xataka | After the failure of the yellow container, the government has reached a conclusion: it is time for the returnable bottles *An earlier version of this article was published in February 2024

Some researchers have analyzed the impact of sugary drinks on world health. They have taken their hands to the head

by

The sugary soft drinks conquered the world a few years ago. Thanks to its flavor and Marketing strategiesthe soft drinks became the very image of globalization. Little by little we began to be more aware of the health hazards that the excessive consumption of these drinks carried, so much that, even in some European countries it was created THE REFRESCO TAX. With the, The consumption of free sugars was reduced In certain cases. But a new one study It reveals that its intake is still very high in many countries. So much that there is an alarming link between the usual consumption of these drinks and millions of new cases of Type 2 diabetes every year. Sugary pandemic. The trigger has been a study by the University of Tufts, in the United States. Reviewing the drinking data of the global dietary database, a database with more than 450 surveys with information on the consumption of sugary drinks and a sample of 2.9 million people belonging to 184 countries, they ran into an elongent figures . Approximately, and according to this study, sugary drinks would be related to 1.2 million new cases of cardiovascular diseases and 2.2 million new cases of type 2 diabetes. Every year and worldwide, something surprising if we take into account The normalized and integrated that these drinks are in all societies. The reasons. It is not a novelty that sugary drinks are related to type 2 diabetes, obesity and other disorders, but the reason is that they are foods that are digested quickly, causing very pronounced blood glucose spikes without providing essential nutrients. They are empty calories like those that a beer can have, but with a much larger amount of sugars. This absorption process, repeatedly, contributes to the weight gain already most important: insulin resistance that carries metabolic problems related to the aforementioned diabetes or cardiovascular diseases. Many cases, but … What does it mean? According to the study, 80,000 deaths per year for type 2 and 258,000 diabetes due to cardiovascular diseases related to soft drinks. Latin America and Africa. In countries that have fought in recent years to promote healthier diets and lifestyles, as well as the taxes we mentioned a few lines, that sugar consumption has decreased, but it is not something that happens throughout the world. In fact, in the study, researchers have focused on two territories: Latin America and Africa. According to these data, in Mexico the usual consumption of these drinks with almost a third of the new cases of diabetes is associated. In Colombia, the percentage rises to almost half. And in South Africa, about 28% of new cases of diabetes and 15% of new cases of cardiovascular episodes are related to these drinks. The explanation they have found is simple: in countries and communities with lower average income, little access to information and more limited preventive medical care, cases are triggered. Not all. Now, what drinks are we talking about? The study focused on the data of the sugary drinks with added sugars and, at least 50 kilocalories per 240 milliliters of product. It is something that includes soft drinks, energy drinks, fruit juices with added sugar, punch and even water with flavors to which sugar is added. Outside the focus is milk (which also has sugar), 100% natural juices without additives and without calorie products, being these sweetened drinks without added sugars. Of course, these drinks may be in the spotlight of subsequent studies, since researchers point out that, although they do not have added and not naturally present sugars, excessive consumption can also have negative health effects. Solutions. Laura Lara-Castor is the main author of the study and Comment that “urgent and evidence -based interventions are needed to curb the consumption of sugary drinks worldwide before more lives are shortened by their effects.” Dariush Mozaffarian is another of the authors, who believes that, above all, much more interest in Latin American and Africa countries should be put. Mozaffaian sees this as a real epidemic and considers that, “as a species, we need to address the problem of sugary drinks.” Now, as with almost everything, the study emphasizes the high and constant consumption of this type of drinks, since under normal conditions, a sporadic soda (without being healthy), is a whim that we can afford. In the end, the study does not want to focus on individual responsibility, but in a collective that involves governments and health systems. And, perhaps, at the most complex: The industry that creates that type of drinks. Image | Xataka In Xataka | There was a time when Coca-Cola had ‘cocaine’. That no longer has it is due to something surprising: racism

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.