As we know, the sparks between the droplets may have begun life
Shutterstock/Perry Correll
The first molecules needed for life on Earth may have been created when small flickers of “microlites” between water droplets triggered a necessary chemical reaction.
“This is a new way to think about how the building blocks of life were formed,” he says. Richard Zare At Stanford University in California.
There was a lasting hole in our knowledge of the origin of life. In particular, how simple gases react to produce organic molecules that combine carbon with nitrogen, such as proteins and enzymes, and the lives we know depend on.
“When you look at the gas people thought they were on the early planet, they don’t contain any carbon-nitrogen bonds,” says Zare. “They are gases like methane, water, ammonia, nitrogen.”
Experiments by Stanley Miller and Harold Urey In 1952, electricity revealed that water and such gases can be converted into necessary organic molecules, but the hypothesis was that electrical energy came from lightning.
However, the unlikely chance that lightning will hit high concentrations of gases into the diluted spread of the ocean or atmospheric means that many people have never been convinced that it is behind the emergence of life on Earth about 4 billion years ago.
Now, Zare and his colleagues spray water droplets into a mixture of methane, carbon dioxide, ammonia and nitrogen gas, showing that external power sources can lead to the formation of organic molecules with unnecessary carbon-nitrogen bonds.
Zare says that water spray droplets produce small charges, which works. “Smaller droplets are negatively charged, while larger droplets are actively charged,” he says. This depends on what is called the Renl effect, where waterfall-like droplets collide and split, creating charge.
However, what the team discovered using high-speed cameras was that, on the other hand, a small flash of electricity, what Zare calls microlites, jumped between them, when the charged droplets were close enough.
This is like how static electricity is generated, or how lightning is accumulated in the clouds and discharged. “When water droplets come within nanometers of each other, we get an electric field, which causes a failure,” he says.
Microlite flashes carried enough energy (approximately 12 electron volts) to allow gas molecules to lose electrons and react with each other, and produced organic molecules through carbon-nitrogen bonds containing one of the components of RNA, hydrogen cyanide, amino acid glycine and uracil.
“It’s amazing that microlites can start chemistry starting with nitrogen. But the reported observations are compelling.” Veronica Vaida University of Colorado at Boulder University. “It brings a new, yet unreported role for water in the origin of life.”
This piece means it was sufficient to provide the chemicals needed to start on this planet, says Zare.
Water sprays are ubiquitous, often landing on rocks, allowing organic chemicals to accumulate in the gaps, he says. The area will then dry and moisten again. Such wet dry cycles are known to combine shorter molecules with longer molecules.
“This study suggests that microlites were abundant in early Earth’s water-rich environments, and could have driven prebiotic chemistry, especially when other energy sources such as lightning and ultraviolet rays were rare.” Kumar Vanka At the National Institute of Chemistry, Pune, India.
Vaida believes that this work also influences searching for extraterrestrial life. We may need to look for a place that allows small droplets to collide, she says.
New research suggests that Mars once was the perfect holiday destination (if they were willing to overlook radiation exposure or lack of food sources), but also had the right conditions for alien life. why? The discovery of ancient sandy beaches on the red planet suggests that once a large liquid ocean spread across the north of the planet.
“Looking back at the places where the earliest life on Earth developed, it was in the interaction between the ocean and the land, which paints a picture of an ancient habitable environment that can embrace the conditions for microbial life,” he said. Benjamin Cardenasassistant professor of geology at Penn State University in the United States and co-author of the study.
Four billion years ago, these beaches would have been the best variety. The waves are softly wrapped sandy and immersed in the sun.
“We found evidence of a lack of wind, waves and sand. It’s a proper vacation style beach,” says Cardenas, whose research was published. Proceedings of the National Academy of Sciences (pnas).
To find this, researchers used a probe up to 80m (260 feet) below the Mars surface in a region of North Mars called the Utopian Plain, using radar imaging, using a probe up to 80m (260 feet) below the Mars surface.
We discovered 76 hidden structures at depths of 10-35m (33-115ft). Sadly, this turned out to be not a mysterious alien infrastructure (we can dream of it), but rather a sedimentary deposit similar to what is found around the Earth’s coastline.
3.6 billion years ago, the ocean may have covered almost half of the red planet. The Orange Star shows where China’s Roberzouron began its exploration. Meanwhile, the Yellow Star is where NASA’s patient rover landed. Both arrived on Mars in 2021. -Image credit: Robert Citron
The structure, thickness and length of Martian sediments showed that they were not formed by the melting of rivers, winds, lava or ice, but rather by stable ancient seas. In fact, they were roughly the same as 21 people on Earth, including the Bay of Bengal.
Specifically, a formation called “foreshore sediments” is formed by the tide and wind that descends the slope towards the ocean at a 15° angle and carries sediments like sand and gravel.
“This quickly stood out to us because it suggested there were waves, meaning there was a dynamic interface between air and water,” Cardenas said. This interaction, which also took place in the early history of the Earth, is important for the beginning of life.
The discovery suggests that Mars had a warm, humid climate for tens of millions of years.
“We tend to think of Mars as a static snapshot of the planet, but it was evolving. The rivers were flowing, the sediment was moving, the land was built and eroding,” Cardenas said.
“This type of sedimentary geology tells us how the landscape looks, how they evolved, and, importantly, helps us identify where we want to look for our past life.”
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aFeathered horses, dust and rain, whisk around you, arrive on a mountain path where purple crystals cover the walls with frost. The weather is still outside, but calm inside the cave at the end of the road. The environment allows you to see what kind of creatures live here. Reidau is a horned wyvern that commands the elements.
You’ve seen it before, but when you unexpectedly appear while you were on another expedition, you descended from the lightning striped sky and sunk its claws into an unfortunate pack of hairy lion-like creatures. You weren’t strong enough to face it, but you’re now. Hopefully.
The next battle is to bite the nail. To try to jump out of the corners and teeth paths of powerful electric bolts and Wyvern, you have to pull out all the tricks you know to wear it out. Fire a grappling hook at a rocky outcrop hanging from the ceiling and bring it over the creature. You blow your mouth while for your mount, leaps back to the dragon’s head, clinging and stabbing with a dagger trying to smash against the wall. You will be flung by, fried, stomped, but you will cling to fight and chew on repair potions at every opportunity.
Then an even bigger predator appears from anywhere, taking the monster you fought desperately for 25 minutes with just that jaw and throw it like a rag doll. Take a closer look at it: it’s what you fight next.
The 15-hour story of Monster Hunter Wilds is a series of escalating and escalating epic battles with bigger, more ferocious creatures. I didn’t do it for a moment. Within hours, you’d fought against awful giant spiders, supple sand dragons, and a disgusting, overgrown oil chick child. After that, you will face a nasty and dangerous version of the beasts of monster hunter games, especially the last 20 years, in addition to the fierce fire drawings and dragons shooting lightning from their faces. It’s literally all the killers, no fillers, a long way from the old game of slow and heavy. There, they had to collect mushrooms and fight raptors before they could go near the Wyvern.
The fight is relentlessly wonderful. When the monster fell I let out a breath that I didn’t notice that I was holding. With the exception of Dark Souls and their siblings, no game made me feel like Monster Hunter. The adrenaline of these battles, the peerless, perfectly balanced feel of oversized weapons, and the pure malice and dignity of the creatures make this game feel unparalleled thrilling despite having played it in some way since I was a teenager. And it’s far better than it was back then. Not only monsters, but their huge natural habitats also ripple overflowing into life.
“The monster’s huge natural habitat is full of life.” Photo: Capcom
Towards the end of the Wild story, I have to admit that I felt some disappointment creep up. I enjoyed almost all of these creatures’ clashes. But I wasn’t trying much. Certainly, I have had a lot of experience with these games, but I’m used to being eaten or torn apart to bite by a new monster several times before conquering it. During the entire Wilds campaign, I was knocked out only twice.
But Wilds’ story turned out to be a 15-hour interactive tutorial on what makes Monster Hunter great. This is a roller coaster of combat thrills designed to sell newcomers on the concept and acquire the taste of scale and visual splendor that Capcom’s modern game engine brings to his favorite series. The real fun begins afterwards.
After taking on the worst creature I’ve ever seen, in the final quest of the story, I was dumped into a base camp in the jungle and sent to capture a small, sparked bird of prey. I was humbled quickly. Embarrassingly, I became lazy and it knocked me out.
Monster Hunter isn’t just about swinging giant spears. It is also about studying quarries, learning their weaknesses and delving into the environment for useful plants and materials used to make coatings of potions, tools and arrows that give you the advantage in battle. Experienced players will help the rookie, so it’s about working with other hunters to complement each other’s playstyle. Being a friend’s Monster Hunter mentor is one of the most rewarding multiplayer gaming experiences out there.
This game cannot be reduced to a series of battles. It’s a community of the world, the ecosystem, and the players. You are some hunters, some nature researchers. Wild goes too far towards frictionless fun in the story, but once I was free to explore, I began to feel more connected to my habitat. From battle to battle, instead of being led by a nose or by my Dascho horse, I climbed up the canopy, scouted for the creatures, took out binoculars, discovered an underwater cave full of hidden corners and useful materials from the campsite. I found myself having to switch weapons more frequently, upgrade armor, and re-recognize myself with a nasty array of gems and doodads that gave hunters useful additional skills.
You can spend a lot of time picking up Wild as a rookie and playing through the story. You can stop there, but it will still be worth the price of admission. But I’ll play it length It’s still time.
By chemically analyzing ancient rock crystals, scientists at Curtin University, Portsmouth University and St. Francis Xavier University discovered that glaciers were carved to mark the landscape after the events of the neoplasm of the Snowman Earth, releasing the main minerals that transformed the sea shells. This process has had a major impact on the composition of the planet, creating conditions that allow complex life to evolve.
Impressions of the artist “Snowman Earth.” Image credit: NASA.
“Our research provides valuable insight into how the natural systems of the Earth are deeply interconnected,” says Chris Kirkland, professor of Curtin University, the study's lead author.
“When these huge ice sheets melted, they caused a huge flood that washed out mineral and uranium-containing chemicals into the ocean.”
“This influx of elements changed marine chemistry as more complex lives began to evolve.”
“This study highlights how Earth's land, oceans, atmosphere and climate are closely connected. Even ancient glacial activity triggers the chemical chain reaction that formed the planet.”
This study also offers a new perspective on modern climate change.
It shows how past changes in the global climate have caused large-scale environmental transformations.
“This research is a clear reminder that while the Earth itself can withstand, the conditions that make it habitable can change dramatically,” Professor Kirkland said.
“These ancient climate changes demonstrate the profound and lasting impact of changes in the natural and human-driven environment.
“Understanding these past events will help us to better predict how today's climate change will reconstruct our world.”
Astronomers investigate the possibilities of life around other stars, primarily by focusing on the distance that exoplanets orbit them. If the exoplanet is close enough to the star, all its water is not frozen and far away The water has not evaporated and does not peel offit is said to be within Residence zone. Many other factors, including the presence of planets, can determine how much life is likely to appear on a planet. A planet like Jupiter That system or a Big Moon By orbiting it, the researchers agree that the habitable zone is the need for a baseline.
One team of astronomers investigated one of these other aspects of livability. It is a danger around the stars around which the exoplanets are in habitable zones. Most stars are far enough apart so they do not directly interfere with their neighbor's planets. However, given time, adjacent stars can cause problems for those living in the stellar system.
The size of the sun can pull each other's planets with gravity if they pass each other within 20 billion miles of the Earth's distance, or 200 times the distance within 30 billion miles or 30 billion kilometers. these Flybys They may drag out exoplanets from their respective habitable zones or throw them entirely out of the star system! Up to 200 trillion miles or 300 trillion kilometers, also known as 10 PulsecStars that are more than eight times the mass of the sun die in an explosion called an explosion Supernova It can immerse nearby planetary systems with enough x-rays and gamma rays to destroy the atmosphere, deplete the ozone layer, and potentially wipe out all living things.
To assess the risks of these events, this team analyzed data from GAIA Data Release 3 and Hipparcos A catalogue containing 146 known star systems with planets in habitable zones. Of these 146 star systems, only 84 closest to the Sun, within 220 parsecs, quarter mile, or seventh quarter kilometers, within the range of uncertainty of 10 parsecs. There is an adjacent star measured at. By focusing on these 84, teams can best assess the true risks of the disappearing level of events facing these systems.
To assess the risk of Flybys, they used an equation to estimate the number of interstellar interstellar path encounters based on the radius of the star system. Movement. They have plugged data related to each of the 84 stars into their Python programs, and found that they are likely to pass with another star within the next 5 billion years. The team supports the general hypothesis that the general hypothesis that fewer adjacent stars are likely to support life, as this example comes from the star with the most neighbors in the entire set. I've explained it.
To assess the risk of supernova, they identified other stars within 10 parsecs of 84 star systems and used their brightness and temperature to calculate mass. For any star that is more than eight times the mass of the Sun, they calculated that the supernova will immerse any planet within this 10 parsecs range with the 100 billion times that the radiation Earth receives from the Sun. They discovered that only two of the 84 stars they tested have large adjacent stars within 10 parsecs, but other scientists say that up to 20 parsecs are He admitted that it suggested that it could be too close to remain still unharmed.
Overall, the team concluded that the risk of extinction-level events caused by adjacent stars facing known habitable zone planets. However, they warned that the current astronomical catalogue was incomplete. In other words, their calculations should be viewed as a low-end estimate of the real risks faced by potential alien lives. They suggested that deep future research could improve estimates of the risks faced by living in these systems and help to expand the number of systems where researchers can perform similar risk analyses.
The Earth is about 4.5 billion years ago. When it was formed from rocks colliding around the dim young sun, it was probably not lively, and for a long time geologists thought life would not appear for more than a decade. The idea came from the analysis of Moonlock, brought back from Apollo Landings. This indicated that the Earth was hampered by space rocks from 4 billion to 3.8 billion years ago. The meaning was that, as we know, it must have started after that, since the previous creatures were getting faster.
“There are two problems with that.” Philip Donohue At the University of Bristol, UK. First, the model suggests that some life could have survived deep within the ocean. Even worse, it appears that the heavy late artillery fires did not actually occur now. The Apollo mission produced the impression of a large artillery over a short period of time, as all gathered rocks of similar age.
Early in the history of the Earth, we found that major effects had sporadically occurred over hundreds of millions of years. However, it is also known that a Mars-sized body collides shortly after the formation of Earth, evaporating the planet's surface. “If life had been born earlier, it would have been wiped out,” Donohue said.
The oldest rock on the earth
Life began when inerts were self-organised into a living system, but despite decades of research, how it happened remains a mystery. As the fossil record gets worse, it's also a big challenge to understand that it happened when it happened…
In 1983, theoretical physicist Brandon Carter said that the time it took for humans to evolve on Earth compared to the total lifespan of the Sun was essentially unlikely to have been our evolutionary origin. We concluded that observers like humans who are comparable to the above are very rare. . In a new study, scientists from Pennsylvania, the University of Munich and the University of Rochester have critically reevaluated the core assumptions of Carter's “hard step” theory through the lens of historical geologics. Specifically, they propose alternative theories with no harsh steps, and the evolutionary specificity required for human origin can be explained through mechanisms other than essentially non-performance. Furthermore, if the surface environment of the Earth initially did not reach the specific important intermediate steps necessary for human existence, as well as human life, the timing of human origin would be a habitability surrounding the history of the Earth. Controlled by continuous openings in the new global environment window.
The new theory proposes that humans may represent potential consequences of biological and planetary evolution. Image credit: Fernando Ribas.
“This is a huge change in how we think about life history,” said Professor Jennifer McCalady of Pennsylvania.
“It suggests that the evolution of complex life may be less about the interaction between luck and its environment, and I am to understand our origins and our place in the universe. paves the path for exciting new research in our quest.”
“The 'hard step' model, originally developed by Brandon Carter in 1983, took humans to evolve on Earth compared to the total lifespan of the sun, so our evolutionary origins are largely due to the fact that He claims it is unlikely. Human beings are extremely low across the globe. ”
In a new study, Professor Makaradi and her colleagues say that the Earth's environment is initially incapable of parasitic life in many forms, and only important evolutionary steps when the Earth's environment reaches a state of “tolerant” claimed that it was possible.
“For example, because complex animal life requires a certain level of oxygen in the atmosphere, oxygenation of the Earth's atmosphere through photosynthesis is the oxygenation of the Earth's atmosphere through microorganisms and bacteria, and oxygenation of the Earth's atmosphere through planets. It was a natural evolutionary step, said Dr. Dan Mills, a postdoctoral researcher at the University of Munich.
“We argue that intelligent life may not need a series of lucky breaks.”
“Humans did not evolve “early” or “slowly” in the history of the Earth, but when conditions were right, they “on time.” ”
“It's probably just a matter of time, and while other planets can probably achieve these conditions more quickly than Earth, other planets may take even longer.”
The central prediction of the “hard step” theory is that, based on Carter's, steps such as the origin of life, the development of complex cells, and the emergence of human intelligence, if there are no other civilizations, then the other civilizations are He says there is little that exists in the universe. The interpretation of the total lifespan of the Sun is 10 billion years, and the age of the Earth is about 5 billion years old.
In a new study, the authors have the ability to originate human origin by continuous openings in the window of habitability to the history of the Earth, driven by changes in nutritional availability, sea surface temperature, ocean salinity levels, and oxygen levels. I suggested that the timing could be explained. atmosphere.
Given all the interaction factors, the Earth has only just become kind to humanity recently. It is simply a natural result of workplace conditions.
“We believe we need to use geological time scales rather than predicting based on the lifespan of the sun, because it takes time for the atmosphere and landscape to change,” Penn State said. said Professor Jason Wright.
“These are the normal timescales on Earth. When life evolves with planets, they evolve at the planet's pace on the planet's timescale.”
Team's paper It was published in the journal this month Advances in science.
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Daniel B. Mills et al. 2025. A reevaluation of the “hard step” model for the evolution of intellectual life. Advances in science 11(7); doi:10.1126/sciadv.ads5698
According to a new study from the University of California, Irvine University, white dwarfs are the life of planets that have produced a warmer surface environment than a warmer surface environment formed within a habitable zone or within a habitable zone. It may provide a suitable environment.
The drainage ability to orbit the habitable zone of the white dwarf may have more Clement states to compensate for the cooling and dimming of the host star over time. Image credit: David A. Aguilar/CFA.
This study included the University of California Irvine Astronomer. Aokawa Shield Coworkers compared the climate of the water world with an Earth-like atmosphere composition orbiting in habitable zones of two different types of stars: the white d star and the main sequence K-Dwarf star Kepler-62.
Using a 3D global climate computer model, normally used to study the Earth's environment, they say that despite similar stellar energy distributions, the explanet of the white d star is far more than the Kepler-62 deplanet I discovered it was warm.
“White dwarf stars may emit some heat from residual nuclear activity into the outer layer, but they no longer exhibit fusion at their core,” Dr. Shields said.
“For this reason, we don't take into account much of the ability of these stars to host habitable exoplanets.”
“Our computer simulations suggest that if rocky planets exist in orbit, these planets may have more habitable real estate on their surface than previously thought. ”
The White Dwarf habitable zone is much closer to the stars compared to other star settlements, such as Kepler-62.
The authors emphasized that this would result in a much faster rotation period (10 hours) for the white dwarf exoplanet, and that Kepler 62's exoplanet has a 155-day rotation period.
Both planets can be trapped in synchronous orbits with permanent daysides and permanent nightsides, but the rotation of the super-fast white dwarf planets extends the circulation of clouds around the planet.
The much slower 155-day orbital period of the Kepler-62 planet contributes to large dayside liquid cloud masses.
“Synchronous rotation of exoplanets in habitable zones of normal stars like Kepler 62 creates more cloud covers on Earth's dayside, reflecting incoming radiation away from the Earth's surface. I expect that,'' Dr. Shields said.
“That's usually good for planets orbiting near the inner edge of the star's habitable zone, where you can cool off a bit, rather than losing the ocean in a runaway greenhouse.”
“But for a planet orbiting straight in the middle of a habitable zone, that's not a very good idea.”
“The planet orbiting Kepler-62 has so many clouds that it is covered in clouds, sacrificeing valuable habitable surface area in the process.”
“On the other hand, planets orbiting the white dwarf spin so fast that they hardly have cloudy time during the day, so they retain more heat and work in their advantage.”
Less liquid clouds and the strong greenhouse effect on the Nightside creates a warmer state on the white dwar planet compared to the Kepler-62 planet.
“These results suggest that the once thought to be lifeless, white d star stellar environment could present a new pathway for exoplanet and astrobiology researchers to pursue. I'm doing that,” Dr. Shields said.
“With powerful observational capabilities online to assess exoplanet atmospheres and astrobiology, such as those related to the NASA/ESA/CSA James Webb Space Telescope, we are now studying a whole new class of whole new classes. You can enter a new stage of being. The world around the stars that was previously not announced.”
Aokawa L. Seals et al. 2025. Increased surface temperature of the habitable white dwarf world compared to the main sequence exoplanet. APJ 979, 45; doi: 10.3847/1538-4357/AD9827
Are we alone in space? It is a question that scientists have been seeking for centuries. And it has not been answered for a long time, but new discoveries can ultimately release the secrets of aliens.
Thanks to OSIRIS-REX, a NASA spacecraft that landed on an asteroid more than 60 million kilometers (40 million miles) away in 2018. However, Osiris did not just land on the asteroid. He also collected Bennu samples and returned them to Earth in 2023.
This is not just an engineering feat, but scientists “1 /1 million” asteroid. That’s because Bennu is not just a mere cosmic rock, but because its carbon composition is abundant and close to Earth, it is virtually early solar time capsules.
So what did the researchers learn accurately? According to two recently released papers – one in the journal Natural Astronomy and one in Nature – the survey results may be forced to rewrite the story of how life began.
What did you find in Bennu?
The headline discovery was that the important building blocks of life were found in the Bennu sample.
Thousands of organic molecular compounds confirmed the presence of 14 of the 20 protein amino acids existing on Earth. In addition, 19 non-protein amino acids and five biological nucleic acids were found.
Other asteroid samples that have fallen to Earth contain some of these materials, but this is the richest sample seen so far.
From Bennu, the team discovered Gailsite, Villyya Umite, Tantalty, and Torona specimens.
But that’s not all. Evidence that salt minerals were once present in the sample indicated the potential existence of water combined with important amino acids raises questions about the possibility of life outside Earth.
“We often talk about the building blocks of life. These essential building blocks seem to have been created on Earth. What about the extraterrestrial ones?” Sean McMahon, the co-director of the British Space Biology Center, said in an interview with BBC Science Focus.
The NASA spacecraft returned to Earth from the asteroid Bennu in 2023.
The first detailed analysis of the material reveals organic molecules, including components of life.
This strengthens the theory that asteroids colliding with Earth may have provided life’s ingredients.
Scientists have found many organic molecules, including major building blocks of life, in a sample collected from distant asteroids.
Surprising discoveries suggest that the chemical components required for life may have spread throughout the early solar system.
NASA’s OSIRIS-REX SPACECRAFT was launched in 2016, gathering material from asteroids, dust, soil, and rocks, and returned them to Earth in 2023.
Analysis of the asteroid materials revealed in a sample published in Journal Nature shows that Earth’s life contains key organic compounds and amino acids.
Researchers did not find evidence of life on Bennu, but the results reinforce the theory that asteroids colliding with Earth may have provided life’s necessary ingredients.
Asteroid Bennu seen from Osiris Lex spaceship.NASA
NASA’s Scientific Mission Bureau stated that the OSIRIS-REX mission has already reshaped our understanding of life’s building blocks in the solar system.
The untouched samples collected from asteroids provide unique insights into the early solar system, unlike meteorites that may be contaminated.
The Bennu sample contains surprising concentrations of ammonia, an essential ingredient in biological processes.
NASA scientists have collected data on September 24, 2023, right after a sample return capsule from NASA’s OSIRIS-REX MISSION.Keegan barber / nasa via Getty Images file
Samples from Bennu also contain traces of minerals that are likely remnants of evaporated brine, suggesting complex compositions on the asteroid.
The microscope image of the sample collected from the asteroid Bennu indicates sodium carbonate, also known as soda ash.Rob Wardel, Tim Gooding, Tim McCoy /Smithsonian
These discoveries on Bennu provide valuable insights into the complex composition of minerals and organic compounds that may have influenced the development of life in the solar system.
Further research is needed to fully grasp the implications of the Bennu samples for our understanding of life’s origins on Earth and other celestial bodies.
“Exploring the unique composition of Bennu and its implications for the emergence of life is a fascinating field of study that could shed light on the mysteries of life on Earth and beyond,” said Jason Dworkin, an OSIS-REX project scientist at NASA’s Goddard Space Flight Center.
The Mediterranean diet has been linked to longevity, especially when following the lifestyle of individuals living near medical care facilities in the 1950s.
This diet focuses on a high intake of plant-based foods with limited consumption of fish, meat, and dairy products, often enjoyed in the company of others during meals. Physical activity and a vibrant social life are also key components.
American physiologist Ancel Keys first identified the Mediterranean diet in the 1950s after observing lower rates of heart disease in South Europeans compared to Americans. His research, starting with the Seven Countries Study from 1958 to 1964, explored the relationship between diet, lifestyle, and coronary heart disease across different populations.
The study revealed that men in countries like Italy and Greece had lower rates of coronary heart disease compared to Finland and the United States, with the Cretans from Greece showing the healthiest outcomes. The emphasis was on the protective effects of high unsaturated fats in these diets.
Asparagus plate – Credit: 10,000 hours
In a Spanish study known as PREDIMED (PrevenConconconDIATATERRánea) conducted in 2011, the benefits of a Mediterranean diet in reducing the risk of cardiovascular disease were highlighted.
Further research suggests that this diet can aid in preventing obesity, type 2 diabetes, and certain types of cancer due to its rich nutrient content, including antioxidants like omega-3 fatty acids, potassium, and vitamins C and E. While there is debate over the inclusion of red wine in the diet, its polyphenol content may offer protective effects against oxidative stress and inflammation.
Recent trends in the Mediterranean population show a deviation from traditional diets high in saturated fats and animal proteins towards plant-based proteins, fats, whole grains, and dietary fiber. This shift, along with increased alcohol consumption, sedentary lifestyles, and obesity rates, underscores the importance of returning to ancestral dietary patterns.
This article addresses the question (posed by Len Bird, “Why is the Mediterranean diet beneficial for health?”).
To submit your question, please email questions@sciencefocus.com or reach out on our Facebook, Twitter, or Instagram pages (don’t forget to include your name and location).
For fascinating scientific insights, explore our collection of fun facts.
I
I started playing the Pokémon Trading Card Game (TCG) about 10 years ago when I was 7 years old. My older brother Marco had already been playing with my father for years. At first, the three of us were playing at home. For me, Pokemon TCG is a family activity that keeps us close. I think that’s important, especially today when everyone is using a cell phone.
I’m from Iquique, a city in northern Chile. There’s a strong Pokémon community here, and several local shops host tournaments. This game is for two players, each person preparing a deck of 60 cards. Each card represents one Pokémon with different abilities and powers. Then use your cards to battle your opponent. The person with the more powerful card combination is the winner.
Throughout Chile, Japanese culture is ingrained within our own, and anime, Pokemon, and manga are very popular here. When I was a child, there were many Japanese programs on TV. I watched Naruto, Dragon Ball, and of course Pokemon.
When I was 10 years old, I went to Santiago for my first tournament and made it to the finals. Before I started playing Pokemon TCG, I hadn’t traveled much. Currently, I have participated in tournaments in Sao Paulo, New Orleans, Buenos Aires, and most recently in Hawaii, where the 2024 World Championships were held.
We started saving for Hawaii a year before the competition. My brother won the tournament in Brazil and won the prize money, as well as the funds to go to the World Championships as one of the top players in Latin America.
My father Marco and I left for Hawaii last August. It was the furthest place we have ever traveled. On the first day, there was a three-hour wait to register for the tournament, and then we lined up again at the Pokemon Center where merchandise was sold. I got stuffed animals such as a scuba diving Pikachu that is exclusive to Hawaii. Then we watched the matches and focused on developing strategies against our opponents.
Marco is a better player than me and one of the best players in the world. But the game also involves luck. I didn’t get too emotional during the three-day championship, I just had a lot of fun. My father taught me not to worry about winning or losing, but to focus on playing well and sharing great experiences with my opponents.
I participated in 15 games throughout the tournament. Each game can last up to 50 minutes. In the final, I didn’t have a very good deck, so I didn’t expect to win. But my opponent made a mistake, so I gave it my all and it worked out. My father would say I’m too humble.
I didn’t have time to celebrate my victory because I had a flight to catch. I received the trophy and immediately headed to the airport. But when we returned to Chile, we arranged a barbecue, invited about 30 friends over to our house, and of course played Pokemon. A few weeks later we received an invitation to the presidential palace. Athletes, even those in niche sports, are invited to meet with the president.
I wasn’t really interested in it, but I saw it as an opportunity to encourage younger kids to play. I was the first Chilean to win the Pokémon Championship. We are such a small country that we cannot win many things.
When my father and I arrived at the palace, we were told that Chilean President Gabriel Boric had to attend an emergency meeting and would not be able to attend. Instead, we spoke to the Secretary General, the Foreign Minister, and the Japanese Ambassador who were interested in the social impact of this game.
Suddenly the door opened and Borrick came in and said, “Hello, Kabros (everyone), how are you doing?” He asked to see some of my cards and offered to take a few selfies. It didn’t feel like I was talking to the president, I was just playing with another card player. He plays the Magic the Gathering card game, which has a similar format to the Pokémon TCG.
I’m not interested in defending my title. No one has ever won the title back-to-back. I just play for fun. Anyone can win with a little luck. Even if you have a good deck and that day comes, who’s to say you can’t become the next Pokemon champion?
As told by Caris McGowan
Do you have an experience to share? Email experience@theguardian.com
I
When I can't last more than 5 minutes without needing some kind of stimulation, I wanted to make a change. Music, podcasts, movies, reels, a combination of them, or all at the same time (probably) created the soundtrack of my life. I'm not alone in this inability to sit still and pay attention without distraction. You also won't feel drained and depressed by endless scrolling. more boredom. But I don't want this state to be the default.
We want to stop using screens, music, and podcasts to fill the void when we should have downtime. I want to be able to be bored. To me, boredom is a state of being unable to suppress the desire to do something. I think you can instill a sense of tranquility by consciously not using your devices and instead using your downtime to spend time with yourself in your local spaces. In doing so, I think we can learn to slow down and be present without the need for digital distractions. It's embarrassing that you can't stand boredom. But it's not just that, I'm scared of not being able to decide where to focus my attention.
When I started the challenge, I hoped that this would lead me on a path to greater attention and awareness of the world around me. There, stopping to smell the roses is not only worth your time, but you'll notice that there are roses there. Start with I want to rebuild my attention span.
1st week
The novelty of starting something new makes me excited and optimistic.
It starts with disconnecting yourself from your phone. I deleted my social media apps and tried not to listen to anything during my commute or daily tasks.
This is certainly uncomfortable and difficult at first (you keep thinking of things to do to avoid getting bored, who would have thought!), but when you finally get down to just staring into space, it's not at all unpleasant. there is no. It's refreshing to have the time and space to have my ideas heard.
2nd week
As I walked without listening, I started noticing things that I normally wouldn't look at twice.
But this is how I feel when I hear unexpected news about my life situation.The urge to rid yourself of all negative emotions. What is the solution? Separation due to large amounts of multimedia content.
I feel guilty for backtracking before my video call with Professor James Danckert, an expert on the psychology of boredom at the University of Waterloo in Canada. Could he tell I wasn't bored enough?
However, cognitive neuroscientists explain that forcing boredom or making yourself “boredible” is bad.
Turns out I was wrong about boredom. Dankert tells me it actually is“I’m highly motivated – but I’m frustrated at the moment because I want to do things that are important to me and I can’t find an outlet for that motivation.”
Boredom is beneficial, he says, because it encourages you to explore your environment and engage in something meaningful. The difficult part is finding or rediscovering the “things” that are important to you.
So I realized that the challenge is no longer about wanting to be bored, but about learning how to tolerate the feeling of boredom, so that you have the space to pay attention to where you are and where you want to be. I decided that I could do it.
3rd week
After the conversation with Dunkert, think about what it felt likeDo you like being bored and how long has it been since you had that feeling? When was the last time that anxious restlessness welled up within you? When was the last time you wandered around the living room aimlessly?
The silence I wanted to avoid wasn't as scary as I thought. It actually helps you identify what is worth paying attention and care to in your life.
I was used to jumping from stimulus to stimulus, so when I started leaning into stillness, I realized that I had more time because the world wasn't moving at 10 TikToks a minute. So, I used the time I had back to make a list of things I wanted to do over the next few weeks. At the top is the desire to return to painting.
When I sit down, my instinct is to reach for my phone, but instead I stop and think about what I actually want to do. Instead of wasting your energy on pointless scrolling, you might be able to channel this feeling into something that gives you more energy. It's finally time to hang up your photos and make your room your own.
Week 4
During my off time, I often take walks outside without my earphones.
I noticed brush staining the sidewalks and jacaranda trees sprouting bright purple in places I didn't expect them to. Was summer this close? These cues from nature remind us of how time passes in a very physical sense that goes beyond the numbers on a clock and refers to the ground we walk on.
I realized that the way I had been thinking about time was wrong. Browsing a lot of social media apps condensed it. Stopping and paying attention to what was around me was stretching my time.
Week 5
In a boredom-induced moment of reflection, I think about my friend's birthday this week and remember my bucket list. There is one item of note on the list. It's about making birthday cards.
When I was a child, I often made cards. I love making gifts for my friends and I wonder why I never made time for it. Maybe you didn't think you had enough time, maybe you weren't attentive enough to see the process from beginning to end, or maybe you lacked concentration.
I gave it to a friend as a gift and the response was better than I expected. It makes me feel full. I had a very fulfilling time.
Week 6
There were moments when I felt confident that I wasn't stuffing my phone up my nose or covering my ears. I've noticed that people around me always pull out their phones when they're waiting for something.
By aligning with the boredom and resisting its calls for attention, I am actively choosing to be present, and to be honest, this is a feeling I'm not very familiar with. But as I grew in my ability to work with myself, I realized that it deepened our friendships. Now you have more to say than just entertaining your friends with meaningless memes. I feel connectedIt's not just about watching the same content.
Week 7
Despite all this challenge, the desire to consume some content is always present. I remember my conversation with Dunkert. Dunkert assured me that “giving up vegetables” isn't a bad thing, but “recognizing the fact that it's what we want to do.”
So I decided to try watching slow TV instead of what I usually watch (comfortable sitcoms) to cultivate a sense of calm.
The 7-hour train journey began from Bergen to Oslo Although it was boring, I had the ability to slowly choose where to focus my attention and when to stop.
Week 8
Being outside the city makes it easier to kill boredom. So, to change my usual way of socializing, I went to a barren nature reserve with some friends.
Immersing yourself in local wildlife and surrounded by
IIt’s an interesting oddity in video game history that one of the greatest horror titles of all time debuted on the Nintendo GameCube, the toy-like console known for some of the cutest titles in the Zelda series and Animal Crossing. But in 2002, Capcom announced five exclusive titles to shore up the struggling platform. That included Resident Evil 4, which is technically the 13th title in the franchise. This title would be considered its pinnacle when released three years later. It was an exciting new breath of life for the survival horror genre.
You wouldn’t guess all this from the game’s very pedestrian setting. Six years after the collapse of Umbrella Corporation, smoldering police officer Leon Kennedy is sent on a mission to retrieve the kidnapped daughter of the U.S. president, who has been found in a small village in rural Spain. For some reason well known to the Secret Service, he is aboard alone.
But with this B-movie premise, the film fundamentally challenged the conventions of the Resident Evil series and the survival horror genre itself. By moving the action from the rainy Midwest of Raccoon City to the Spanish countryside, Capcom thrust Regifan (and Leon himself) into an entirely unfamiliar environment. This sense of chaos is amplified by the traditional limp zombies (obviously inspired by George A. This continued even when the nobles were infected with parasites and replaced by axe-wielding, savage, swift countrymen. These feisty creatures more closely resemble the infectious maniacs depicted in Danny Boyle’s modern zombie film 28 Days Later, and are no doubt an influence on “Register 4” director Shinji Mikami. there is no. The Texas Chainsaw Massacre and the obscure Lovecraftian horror film Dagon, which was actually set in Spain, have also been cited by fans as possible inspirations.
The action feels frighteningly close to… Resident Evil 4 (2005).
Photo: Capcom
Producer Hiroyuki Kobayashi said in an interview that the theme of this work is “collective fear.” Throwing swarms of ganados at players instead of small groups of zombies increased the pressure, causing outright panic on more than one occasion. The game’s rudimentary AI allowed enemies to sneak around behind the player instead of mindlessly tripping straight up.
But most importantly, Resi 4 pulled the player’s gaze downward from a floating third-person perspective to an intense over-the-shoulder perspective. This made it easier to aim at enemies compared to earlier Resident Evil games, which were frustratingly insensitive, but more importantly, it emphasized a sense of specificity and proximity. . The action is graphic, with teeth and ax blades coming terrifyingly close together. Mikami then said that while he never expected this to be such a revolutionary feature, it’s a feature that has inspired all generations of brawler adventures, including Gears of War (and 2018’s God of War reboot). He said he was an inspiration.
Also: Dead Space designer Ben Wanat
Referenced EA’s Cosmic Horror Shooter Joins ‘Resident Evil 4 in Space’ and ‘The Last of Us’ Designer Ricky Cambia
talked about And looking at it now, the sense of interdependence between Leon and Ashley certainly foreshadows the fragile relationship between Joel and Ellie.
The new shoulder camera has changed the tempo of the entire Resi experience, with an emphasis on action and gunfights. A tense silence still prevailed for several minutes as we explored the farm and castle grounds strewn with dank corpses. But then a bloody siege ensued as huge waves of warriors surged through muddy lanes and dimly lit industrial tunnels. The set-piece encounter became the stuff of legend. From ferocious dogs lurking in an ornate garden maze to giant snake beasts in a lake, this game has a thrilling menagerie of boss enemies to contend with. Surprisingly, players are even reminded of inventory management, with fond memories of relentlessly refilling attaché cases to contain more goods purchased from shadowy traders.
In 2023, Capcom released an amazing updated version, bringing thrilling Grand Guignol fun to a new generation. But going back to the original still works. Every now and then a video game comes along that fans love, but game designers love even more. And these games will ultimately change the approach of the entire industry. Super Mario 64 was one of them, and so was Doom. I have to add Resident Evil 4 to that list.
aAfter a mostly mild and cloudy December, winter has finally arrived. We’ve rounded up some of the most popular and tried-and-true products to help you stay warm, especially when you don’t want to turn up the thermostat too much.
From slippers to coats and pajamas to top-of-the-line electric heaters and blankets, they’ll all help you beat the cold and even stay stylish.
The best cold weather essentials to beat the cold
electric blanket
OHS electric heated fleece overblanket
£20 at Online Home Shop
£34.99 on Amazon
This great value heater throw was rated the best budget option in 2008. emily peck Reviews of the best heated blankets. Available in blush, charcoal, forest green, and black, it comes with 9 temperature settings and a timer that turns it off after 9 hours.
heating airer
Dry: Quickly Deluxe 3-Stage Heated Airer and Cover
£149.99 on Amazon
£194.98 at Lakeland
Warm air dryers claim to dry clothes regardless of the weather without costing the earth any energy. jane hoskin We tested 12 and rated this one from Lakeland as the best overall. She says this dryer is for people who are tired of having to choose between the expense of noisy tumble dryers, dirty clothes on the radiator, and the smell of laundry that dries slowly in traditional clothes dryers. It is said to be for people who have.
electric heater
Duux Threesixty 2 Ceramic Heater
£89.99 at John Lewis
£99.99 at Currys
The mercury is dropping and the house is getting colder. But if you have your finger hovering over your central heating dial, an electric heater may be just what you need to efficiently heat your colander. pete wise We tested eight of the best, including this compact model that thoroughly heats a space while making less noise than standard fan models.
In a dry January of 2023, the World Health Organization (WHO) issued an alcohol statement pouring warm, stale lager, based on the idea that no matter how much alcohol you drink, it’s good for your health. There is no such thing as a safe drinkit was written.
Publication year lancet public healthThe statement states: “Alcohol is a toxic, psychoactive, and addictive substance; [was] It was classified as a Group 1 carcinogen by the International Agency for Research on Cancer several decades ago.” It’s a sobering thought, and a surprise to those of us who celebrate our health with the occasional drink.
We all know that excessive drinking is associated with a variety of health problems, including damage to the liver, heart, mental health, and even increased risk of cancer. But most drinkers have also likely heard that small amounts of alcohol can have certain protective effects, such as reducing the risk of arteriosclerosis and lowering insulin resistance.
Of course, “moderate drinking” is a subjective measure. In the UK, this means between 7 and 14 units of alcohol per week (14 units is the equivalent of six pints of beer or one and a half bottles of wine). Belgian guidelines state that drinking 21 drinks a week for men and 14 drinks a week for women is “low risk”. So why did the WHO decide that consuming alcohol in any amount is bad?
Dry January was launched as a public health campaign in 2013 by Alcohol Change UK, a UK-based charity. – Photo credit: Getty
Well, the WHO statement was not issued in a vacuum. It explains that it partially arose from the debate over whether there is a “threshold” at which alcohol becomes carcinogenic. Dr. Jurgen Rehma PhD from the University of Toronto, researching the harms of alcohol and other drugs to public health.
“While being even, [the alcohol] “While the industry does not deny that alcohol is a carcinogen, there has been debate about potential thresholds,” he says.
“This led to a reassessment of the evidence and reiterated the International Agency for Research on Cancer’s statement that there is no lower limit.”
In other words, drinking just one drink a week increases your risk of cancer. This is consistent with what other researchers have found in recent years. “There’s a lot of research on breast cancer that shows that even drinking less than one drink a day can pose a risk,” Rehm says.
And it’s not just cancer. In 2021, scientists at the University of Oxford discovered that: No amount of alcohol is safe for brain functiontracks the loss of gray and white matter in the brain as alcohol intake increases.
They also found that while light drinkers appear to have a lower risk of heart disease than abstainers, it’s not vice that helps. Instead, the study found that light drinkers were more likely to engage in other healthy behaviors, such as exercising and quitting smoking. It was those, not the occasional shiraz, that were the beneficiary.
There is another interesting point that emerges from these and other studies. In most cases, the health risks from alcohol increase the more you drink.
“Many of the risk curves for alcohol are exponential,” Rehm says. “This means that the health benefits of reducing your daily drinks from four to two are much greater than reducing your daily drinks from two to zero.”
Nothing in life is without risk. So if you enjoy drinking occasionally, you may be able to tolerate the risk. “Personally, I don’t care about the risk of three glasses.” [a week]”Unless you’re genetically predisposed to cancer,” Rehm says.
For anyone cutting back after a very enjoyable Christmas, it’s natural to wonder whether Dry January should be a more permanent change. The evidence continues to mount and it is clear that less is more.
read more:
About our experts
Dr. Jurgen Rehm She studies addiction at the University of Toronto, focusing on how social factors and policies influence drug use. His work has been recognized with numerous awards, including the Jelinek Memorial Award and the European Addiction Research Award.
The active fitness enthusiasts among us enjoy reaping the rewards of our workouts, whether it’s hitting the track for a run or refueling at the gym. But for the rest of us, finding time for a full workout can be a challenge, especially for those with busy schedules or young children. New research suggests that breaking up your physical activities throughout the day can be just as beneficial as longer workouts.
Studies have shown that incorporating small bursts of activity into your daily routine can help improve your overall health and longevity. Recent research indicates that even short periods of activity can have a positive impact on your health, particularly for those who are considered inactive and at risk of heart-related issues.
Thanks to advancements in movement tracking technology, scientists can now accurately monitor people’s activity levels, providing valuable insights into the benefits of even small amounts of physical activity. This precise measurement has revealed the significant impact that short, intense activities can have on overall health.
Research is highlighting the importance of “vigorous intermittent lifestyle physical activity” (VILPA), which includes short bursts of high-intensity activities like running up stairs as part of your daily routine. Studies have demonstrated that incorporating these types of activities into your day can lead to improved health outcomes.
While the World Health Organization recommends a certain amount of weekly physical activity, many people struggle to meet these guidelines. The idea of incorporating shorter bursts of activity throughout the day is gaining traction as a more achievable way to stay active and healthy.
Both VILPA and exercise snacks, which involve intentional bursts of activity, offer a more flexible approach to physical fitness. These concepts aim to make staying active more accessible, especially for individuals who may find traditional exercise routines challenging.
While short bursts of activity should not be seen as a replacement for longer workouts, they can be a valuable addition to your overall fitness routine. Experts emphasize that any physical activity, no matter how short, is beneficial for your health and well-being.
About our experts
Emmanuel Stamatakis: Professor of physical activity and population health, with extensive experience in sports medicine and research.
Lenert Veerman: Public health expert specializing in health economics and epidemiological modeling.
Tessa Strain: Postdoctoral fellow specializing in physical activity research and public health policy.
Jonathan Little: Professor known for developing the concept of “exercise snacks.”
I I feel as if I have lost days of my life to digital. I’m an extrovert, but the near-constant communication on WhatsApp can be exhausting. I’m always worried about not being able to reply to everyone right away. Add to that the performance factor and worry that proving you care will be judged on the messages you send, and it can all become too much.
“Where did Lemona go?” one friend panicked when I found myself stunned while pressing deadlines, babysitting, and entertaining guests. With 248 unread messages piling up in just one group, including podcast-length audio notes, I felt like the bad guy for being absent. Sometimes I’m happy to be completely silent – because I was in an unnecessarily large group that was added without my consent. I’ve been going unnoticed for years in unsolicited selfies of people I barely know, forwarding messages that if I don’t forward further, I’m going to face some kind of disaster, but someone knows I’m lurking. When they found out I was there, they kicked me out in front of all 43 members. It was frustrating.
I’m not bold enough to completely “keep using the app,” but I’ve managed to significantly reduce my messages over the past few years. My freedom from digital management was gradual. It started with removing my “last seen” status. By doing so, not only did I free myself from my dependence on receiving replies, but I was also less in touch and less needy.
Since I don’t use apps as much, I’ve become more conscious of my time. Instead of getting caught up in the hamster wheel of responses, I created space for other things. Do your morning stretches instead of opening an app as soon as you open your eyes. regain one’s concentrationread the actual book and Please finish it like before. I have also started knitting. I was able to knit an Ewok hood for my toddler niece. This took three years, but it probably would have taken five if we hadn’t reduced our commitment to WhatsApp. Taking a break from communication has cleared my cluttered head and allowed me to think more creatively. I’m also learning Korean on Duolingo.
Still, I fully appreciate the connection that WhatsApp provides. It’s a place where you can share prayers for your sick parents, lift up your friend’s spirits after a bad date, and hold on to your sorrows and frustrations while the world burns and humanity’s hopes look bleak. WhatsApp packs so many heavy emotions, intimate experiences, and different personalities, yet compresses complex thoughts and emotions into fast-talking conversations that can be easily misread. Masu. Perhaps its intensity and dichotomy – the pleasure and stress it gives me, the longing for connection and the flood of over-connection – is precisely why it’s a place where I feel overwhelmed.
I also considered deleting the app completely. But is it really worth sacrificing seeing a photo of your niece dressed as an Oompa Loompa on World Book Day? Can I really disconnect from my supportive cheerleading friends and enjoy the mundane details of life?
I still need WhatsApp, but less than before. By being patient, I learned how to control my desires. I am finally learning how to release from acute fomo without experiencing it. Rather than strict selection, we adjusted the boundaries. My friends also lived up to their expectations, saying, “She will get back to you within 3-5 business days.” But by giving myself permission to not feel pressured, I began to enjoy a newfound freedom. Now I have to resist the yoke of a new app: the forced appeal of maintaining my Duolingo streak.
In new research Published in a magazine PLoS ONEArchaeologists have investigated exceptional human remains unearthed from the Middle Trypilian site (c. 3700-3600 BC) of Kosenivka in Ukraine.
The Trypilian culture was a Neolithic European culture that arose in Ukraine between the Seret and Bug rivers in the 5th millennium BC, extending south into modern-day Romania and Moldova and east as far as the Dnieper River.
Also known as the Cucuteni-Trypilian culture, this culture is characterized by advanced agriculture, advanced metallurgy, pottery making, sophisticated architecture, and social organization.
Trypian society was a matrilineal society in which women headed the household, engaged in agricultural work, and manufactured pottery, textiles, and clothing.
Hunting, raising livestock, and making tools were the responsibility of men.
“Despite the huge number of artifacts left behind by the Trypilians, archaeologists have discovered very few human remains,” said Dr Katharina Fuchs from Kiel University and her colleagues.
“Because of this absence, many aspects of the life of this ancient people remain to be discovered.”
Researchers investigated a Trypilian culture settlement near Kosenivka, Ukraine.
This site, which consists of several houses, is unique in the presence of human remains.
The 50 human bone fragments found in the remains of the house were taken from at least seven people, children, adults, men and women, who likely once lived in the house. The bodies of four of them were also badly burned.
Researchers analyzed the carbon and nitrogen content of bones, grains and animal carcasses found at the site and found that meat made up less than 10% of the residents' diet.
This matches teeth found at the scene, which show wear marks indicating chewing on grain or other plant fibers.
That the Trypilian diet consisted largely of plants supports the theory that cattle in these cultures were primarily used to fertilize fields and produce milk rather than for meat production.
“Human bones are a real biological archive,” Dr. Fuchs said.
“The study of Trypilian society and its living conditions in the oldest urban communities in Eastern Europe remains difficult, but our 'Cosembica case' clearly shows that even small bone fragments can be of great help. ”
“By combining new osteological, isotopic, archaeobotanical and archaeological information, we provide excellent insight into the lives, and possibly deaths, of these people.”
Scientists also investigated potential causes of the burns, including fire and unusual forms of burial.
Burnt bone fragments were mainly found in the center of the house, and previous research had assumed that the residents there died in a house fire.
The authors examined the bone fragments microscopically and concluded that the burn probably occurred shortly after death.
In the event of an accidental fire, the researchers suggest that some people could have died from carbon monoxide poisoning even if they had escaped their homes.
According to radiocarbon dating, one of them died in about 19 years. 100 years later. This person's death cannot be related to the fire, but is otherwise unknown.
Two others whose skull injuries have not healed have raised questions about whether violence may have played a similar role.
Examination of Trypilian human bone finds showed researchers that less than 1% of the dead were cremated, and even more rarely buried inside homes.
“Overall, our results point to enormous yet untapped explanatory potential in the rare and poorly preserved bioarchaeological archive of the Cucuteni Trypillia phenomenon,” the scientists concluded.
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K. Fuchs others. 2024. Life and death in the Trypilian period: an interdisciplinary analysis of unique human bones from the Kosenivka settlement, Ukraine (3700-3600 BC). PLoS ONE 19 (12): e0289769;doi: 10.1371/journal.pone.0289769
WWe're disoriented and our brains are shrinking – at least our hippocampus is shrinking. These seahorse-shaped parts of the brain are about 5 cm in size, located just above the ears, and are responsible for our spatial awareness and sense of direction. London taxi drivers are famous for taking Knowledge, a test that requires them to memorize the capital's central streets, and they have life-sized hippocampi. But in 2011, neuroscientists at University College London found that taxi drivers' hippocampi shrank significantly after they retired.
Hippocampal development may also be disrupted during childhood. Children living in urban environments rarely see the sunrise or sunset and cannot distinguish between east and west. When I volunteered to go to local schools and teach directions to children, I noticed that they had a hard time distinguishing between north and south, east and west. However, you should be able to tell the difference if you are allowed to use your phone.
Ever since Google Maps was launched in 2005 with the claim that it would help users get from A to B, and three years later when the iPhone 3G was launched with “live” location, the online tech giant The first generation of today's digitally native children would not have known what it meant to be lost. But is that a good thing? Their vision and direction, like the hippocampus, is diminished by the collusion of their online providers. Over four generations, children roamed up to six miles from home, but on average only 300 yards. Even before COVID-19, three-quarters of children spent less time outdoors than prison inmates, research has found. Many parents know that the subsequent 50% increase in agoraphobia has a significant impact on children's mental and physical health. But it also drives biophobia
avoidance, and even fear of the natural world. When we become afraid of nature, the consequences are: Indifference and even hostility towards environmental conservation.
No matter where your kids travel, they're probably following a blue dot on their phone screen to guide them, regardless of the world around them. Now more than ever, mobile phones allow us to have maps in the palm of our hands, but maps can be both liberating and tyrannical. Our phones map us and collect our likes and dislikes online.
The current study focuses on this so-called Developmental topographical disorientation The same goes for mental health, as online experiences lead to digital contamination of our sense of space and place. Quite literally, we are becoming disoriented in the digital world, abandoning cognitive-enhancing tools like paper maps and magnetic compasses that allow us to move and orient ourselves in parallel to the physical world. . We have retreated from using the spatial skills that have sustained us for thousands of years. No wonder our feeling of being lost is as existential as it is directional.
To be disoriented means to be “lost in the East.” The word comes from the Latin word meaning the sun rising in the east. In ancient history, most societies were oriented primarily toward the east, the source of the sun, which gives light, heat, and life. Next we came to the west where the sun was setting. This was followed by north and south, and people determined their positions by astronomical observations of the sun's position at noon and the North Star, Polaris. Early polytheistic societies worshiped the sun rising in the east, and this tradition continues in the monotheistic Judeo-Christian faiths, which place the east at the top of the map as the place of the beginning of creation and resurrection. In the Old Testament, Creation begins in the East in the Garden of Eden. Medieval Mappa Mundi Hereford Cathedral The upper part has East, depicting Adam and Eve in Eden, and the lower part has West. This was the orientation that defined European Christianity for over 1,000 years.
In contrast, early Islamic maps placed the south at the top, as the first converts to the faith lived directly north of Mecca. The easiest way to understand their sacred direction was to orient the map so that Mecca was “up”. We still talk about going up north and going south in the UK. This is the old hangover of understanding the four points of the compass: up and down, forward and backward, or left and right, depending on our body. South serves as a cardinal direction, just as in classical Chinese science a magnetic compass pointed south rather than north. they are called this Ragyo“That which points to the south.” Australians know this. In 1979, Stuart MacArthur published a corrected map of the world with Australia at the top and facing south.
In 1961, American astrophysicist and astrobiologist Dr. Frank Drake multiplied several factors to estimate the number of intelligent civilizations in the Milky Way that could make their presence known to humans. I devised an equation. More than 60 years later, astrophysicists have created a different model that focuses instead on conditions created by the accelerating expansion of the universe and the amount of stars forming. This expansion is thought to be caused by dark energy, which makes up more than two-thirds of the universe.
Artistic impression of the multiverse. Image credit: Jaime Salcido / EAGLE collaboration.
“Understanding dark energy and its impact on our universe is one of the biggest challenges in cosmology and fundamental physics,” said Dr. Daniele Solini, a researcher at Durham University’s Institute for Computational Cosmology. .
“The parameters that govern our universe, such as the density of dark energy, may explain our own existence.”
Because stars are a prerequisite for the emergence of life as we know it, the team’s new model predicts the probability of intelligent life arising in our universe, and in a hypothetical multiverse scenario of different universes. could be used to estimate the
The new study does not attempt to calculate the absolute number of observers (i.e. intelligent life) in the universe, but instead calculates the relative probability that a randomly chosen observer will inhabit a universe with certain properties. will be considered.
It concludes that a typical observer would expect to experience significantly greater densities of dark energy than seen in our Universe. This suggests that its ingredients make it a rare and unusual case in the multiverse.
The approach presented in this paper involves calculating the rate at which ordinary matter is converted into stars for different dark energy densities throughout the history of the universe.
Models predict that this proportion would be about 27% in a universe where star formation is most efficient, compared to 23% in our universe.
This means that we do not live in a hypothetical universe where intelligent life has the highest probability of forming.
In other words, according to the model, the values of dark energy density that we observe in the Universe do not maximize the potential for life.
“Surprisingly, we found that even fairly high dark energy densities can still coexist with life. This suggests that we may not be living in the most likely universe. ,” Dr. Solini said.
The model could help scientists understand how different densities of dark energy affect the structure of the universe and the conditions for life to develop there.
Dark energy causes the universe to expand faster, balancing the pull of gravity and creating a universe that is capable of both expansion and structure formation.
But for life to develop, there needs to be areas where matter can aggregate to form stars and planets, and conditions need to remain stable for billions of years to allow life to evolve.
Importantly, this study shows that the astrophysics of star formation and the evolution of the large-scale structure of the universe combine in subtle ways to determine the optimal value of dark energy density required for the generation of intelligent life. It suggests that.
“We will use this model to investigate the emergence of life across different universes and reinterpret some fundamental questions we ask ourselves about our own universe,” said Lucas Lombreiser, professor at the University of Geneva. It will be interesting to see if there is a need.”
of study Published in Royal Astronomical Society Monthly Notices.
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Daniele Solini others. 2024. Influence of the cosmological constant on past and future star formation. MNRAS 535 (2): 1449-1474;doi: 10.1093/mnras/stae2236
The mother of a teenage boy who committed suicide after becoming addicted to an artificial intelligence-powered chatbot has accused the chatbot’s creator of complicity in his death.
Megan Garcia filed a civil lawsuit Wednesday in Florida federal court against Character.ai, which makes customizable role-playing chatbots, alleging negligence, wrongful death, and deceptive trade practices. Her son Sewell Setzer III, 14, died in February in Orlando, Florida. Garcia said Setzer was using the chatbot day and night in the months leading up to his death.
“A dangerous AI chatbot app marketed to children abused and preyed on my son, driving him to suicide,” Garcia said in a press release. “While our family is devastated by this tragedy, I want to warn families of the dangers of deceptive and addictive AI technology and demand accountability from Character.AI, its founders, and Google. I am raising my voice.”
in TweetCharacter.ai said: “We are heartbroken by the tragic loss of one of our users and would like to express our deepest condolences to the family. As a company, we take the safety of our users very seriously. ” The company denied the lawsuit’s allegations.
Setzer was so obsessed with a chatbot built by Character.ai that he nicknamed it Daenerys Targaryen, a character from Game of Thrones. According to Garcia’s complaint, the man would text the bot dozens of times a day from his cell phone and talk to it for hours alone in his room.
Garcia has accused Character.ai of creating a product that worsened her son’s depression, which she said was already the result of overusing the company’s products. At one point, “Daenerys” asked Setzer if he had made any plans to commit suicide, according to the complaint. Setzer admitted to doing so, but didn’t know if it would be successful or cause significant pain, the lawsuit alleges. The chatbot reportedly told him, “That’s no reason not to do it.”
Garcia wrote in a press release that Character.ai “intentionally designed, operated, and marketed a predatory AI chatbot to children, resulting in the death of a young person.” The lawsuit also names Google as a defendant and the parent company of Character.ai. The tech giant said in a statement that it only has a licensing agreement with Character.ai and does not own or maintain any ownership interest in the startup.
Rick Claypool, research director at consumer advocacy nonprofit Public Citizen, said tech companies developing AI chatbots can’t be trusted to regulate themselves, and if they fail to limit harm, says he must take full responsibility.
“Where existing laws and regulations already apply, they must be strictly enforced,” he said in a statement. “Where there are gaps, Congress must act to end companies that exploit young and vulnerable users with addictive and abusive chatbots.”
In the US, you can call or text. National Suicide Prevention Lifeline 988, chat 988lifeline.orgor text home To contact a crisis counselor, call 741741. In the UK, a youth suicide charity papyrus In the UK and Ireland, you can contact us on 0800 068 4141 or email pat@papyrus-uk.org. Samaritan You can contact us on freephone 116 123 or email jo@samaritans.org or jo@samaritans.ie. Australian crisis support services lifeline is 13 11 14. Other international helplines can be found at: befrienders.org
On Earth, solar radiation can travel up to several meters into the ice, depending on its optical properties. Organisms in the ice can harness the energy from photosynthetically active radiation while being protected from harmful ultraviolet radiation. On Mars, there is no effective ozone shield, so about 30% more harmful ultraviolet radiation reaches the surface compared to Earth. However, a new study shows that despite strong surface UV radiation, mid-latitude ice on Mars contains 0.01-0.1% dust, ranging from a few centimeters deep to several centimeters deep. It has been shown that a radioactive habitable zone exists with a range of up to 3000 m. Cleaner ice.
The white edges along these canyons on Mars' Terra Sirenum are thought to be dusty water ice. cooler others. It is thought that melt water could form beneath the surface of this type of ice, providing a potential site for photosynthesis. Image credit: NASA / JPL-Caltech / University of Arizona.
“Today, if we are trying to find life anywhere in the universe, the icy outcrops on Mars are probably one of the most accessible places we should look,” said a researcher at NASA's Jet Propulsion Laboratory. said Dr. Aditya Kuler.
Mars has two types of ice: frozen water and frozen carbon dioxide.
Dr. Cooler and his colleagues investigated water ice. The ice masses were formed from snow mixed with dust that fell on Mars during a series of ice ages over the past million years.
That ancient snow has since solidified into ice and is still dusted with dust.
Dust particles can block light in deeper layers of ice, but they are the key to explaining how underground pools of water form within the ice when exposed to the sun.
The black dust absorbs more sunlight than the surrounding ice, causing the ice to warm and potentially melt several feet below the surface.
Mars scientists are divided on whether ice actually melts when exposed to the Martian surface.
It's thought to be caused by the planet's thin, dry atmosphere, where water ice sublimates and turns directly into gas, similar to dry ice on Earth.
But the atmospheric effects that make melting difficult on Mars' surface don't apply beneath the surface of dusty snowpack and glaciers.
On Earth, dust in ice can create what are called cryoconite holes. This is a small cavity that forms in the ice when windblown dust particles (called cryoconite) land there, absorb sunlight, and melt deep into the ice each summer. is.
Eventually, these dust particles stop sinking as they move away from the sun's rays, but they still generate enough heat to create pockets of melted water around them.
This pocket can foster a thriving ecosystem of simple organisms.
“This is a common phenomenon on Earth,” says Arizona State University researcher Phil Christensen.
“Rather than melting from the top down, thick snow and ice melts from the inside out, letting in sunlight that warms it like a greenhouse.”
In 2021, the authors discovered powdery water ice exposed inside canyons on Mars and proposed that many canyons on Mars are formed by erosion as ice melts into liquid water.
Their new paper suggests that powdery ice lets in enough light for photosynthesis to occur as deep as 3 meters (9 feet) below the surface.
In this scenario, the upper layer of ice prevents shallow underground pools of water from evaporating, while also protecting them from harmful radiation.
This is important because, unlike Earth, Mars does not have a protective magnetic field to protect it from both the Sun and radioactive cosmic ray particles flying through space.
“Water ice most likely to form underground pools would exist in tropical regions of Mars between 30 and 60 degrees latitude, in both the northern and southern hemispheres,” the researchers said.
of paper appear in the diary Communication Earth and Environment.
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AR cruller others. 2024. Possibility of photosynthesis on Mars in snow and ice. common global environment 5,583;doi: 10.1038/s43247-024-01730-y
This article is a version of a press release provided by NASA.
Marine biologists have discovered adult tubeworms and other extrusive animals beneath the ocean floor of the East Pacific Ridge, a volcanically active and rapidly spreading ridge with numerous hydrothermal vents.
East Pacific Rise, subseafloor vents on the seafloor surface and crust on the outskirts of Fava Flow. Image credit: Bright others., doi: 10.1038/s41467-024-52631-9.
The East Pacific Rise is a volcanically active ridge located where two plates meet at the floor of the Pacific Ocean.
It contains many hydrothermal vents, which are openings in the ocean floor that form where ocean water and magma meet beneath the Earth's crust.
“It was once thought that the ocean-floor crust beneath hydrothermal vents was inhabited only by microorganisms and viruses,” says researcher Monika Breit of the University of Vienna and colleagues.
“But there are animals on the ocean floor that look like giant tube worms. Liftia Pachyputira Thrive. “
“The larvae are thought to disperse into the water column, even though they have never been observed there.”
“We hypothesized that these larvae migrate beneath the ocean floor via vent fluids.”
Dr. Bright and his co-authors sailing on the Schmidt Oceanographic Research Vessel Falcor (also)used the remotely operated vehicle SuB-astian to undertake a series of dives into a hydrothermal vent site located at a depth of 2,515 meters in the East Pacific Ridge.
The vehicle's arm was used to expose part of the ocean's crust, which revealed a warm, warm habitat that is home to a variety of species previously found only on the ocean floor, including giant tube worms and migratory animals such as earthworms and snails. A fluid-filled cavity was revealed.
Larvae from seafloor communities can colonize these subseafloor habitats, demonstrating the complex connectivity between seafloor and subseafloor ecosystems.
An animal habitat has been discovered beneath the ocean floor of the Earth's crust, but its extent is currently unknown, raising the urgency of its protection against potential future environmental changes.
“The presence of adult tubeworms suggests that the larvae dispersed through the recharge zone of the hydrothermal circulation system,” the authors said.
“Given that many of these animals are hosts to dense bacterial communities that oxidize reduced chemicals and fix carbon, subseafloor expansion of animal habitats may be localized. and regional geochemical flux measurements.”
“These findings highlight the need to protect vents, as the extent of these habitats has not yet been fully determined.”
team's work appear in the diary nature communications.
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M. Bright others. 2024. Animals that live in the crust beneath the shallow ocean floor of deep-sea hydrothermal vents. Nat Commune 15, 8466; doi: 10.1038/s41467-024-52631-9
exterior: The cable that connects to your phone and connects to your home.
I haven’t had a landline phone for years. Oh, young whipsnapper! You are really missing out.
What exactly? So many! Give your complete phone number to the caller when you answer the phone, and lock yourself in a room where all family members can clearly hear your side of the conversation. It’s the best.
I don’t think it’s the best. You won’t understand. My landline still receives a lot of calls.
From whom? Oh, all my new friends. This is the man who promised to give him millions of pounds in return for loaning him 10,000 pounds. The woman at the bank who kept asking for all my personal information. They are all very nice works.
I don’t want to say it, but this is what I think Maybe you are being deceived. Yes, you are almost certainly being scammed. It has recently been discovered that more than half of all calls are made to landlines. It’s from a scammer.
why? That may be because fraudulent numbers are harder to screen and block on landlines than on mobile phones. It may be because someone who legitimately wants to talk to you just rings your cell phone. Or maybe it’s because it’s mainly older people who have landlines these days.
How is it related? Scammers famously like to target the elderly, with 80% of seniors owning a landline, compared to only 50% of 18-29 year olds. Because it is.
So if you’re a scammer and you dial a landline… You’re more likely to get a kind senior who may not realize you’re about to empty your bank account.
terrible. This must be the end of landline telephones. Landlines are now coveted by Gen Z, so don’t talk too soon.
why? It looks like a cassette player and is retro and cool. Listen, if you’re 20 years old, you’ve probably lived your entire life using your cell phone as your laptop, camera, book and food ordering system. Isn’t it refreshing that it can only be used as a phone?
Ah, I see. It’s imaginary nostalgia. Maybe it will stick. After all, nothing makes a phone conversation more enjoyable than the actual phone call.
Wait a minute, what do you mean by conversation? when talking to someone.
Via text? No, it’s from your mouth.
I in fact you would have to Do you want to tell someone? Vocally? By phone? that teeth my biggest fear. Well, you might die alone with that kind of attitude, but the good news is you’ll never get scammed.
Please say: “Landline phone users are more susceptible to fraud.”
Please don’t say things like: “But please give us all your bank account details and we will tell the scammers to stop.”
The British sense of humor is cherished among Brits, but it’s natural to assume that many British jokes may be embarrassing to other cultures. There is an interesting point to consider here – humor is not universal. What one finds amusing is not inherent, but rather cultural.
Humor differs significantly from laughter, which is a common experience for all human beings, even the grumpiest ones. Laughter is much easier to comprehend and study scientifically.
For instance, TV producers have long understood that incorporating a pre-recorded “laugh track” can make people perceive something as funnier compared to when they don’t hear that laughter (I’m Looking at You, 90’s Sitcom). However, neuroscientist Robert Provine found that jokes are not even necessary. In a study conducted in 2013, Provine solely played the laugh track, which surprisingly was adequate to induce laughter in nearly all participants.
Provine’s groundbreaking research on laughter involved observing it in real-world settings rather than just in a lab. Observing people laughing in public, he empirically proved that individuals are significantly more likely to laugh in the presence of others than when alone, approximately 30 times more likely. Moreover, laughter is not necessarily a response to finding something funny but serves as a form of social communication, indicating a positive, nonthreatening interaction.
Laughter is not exclusive to humans; it is observed across the animal kingdom. For example, apes enjoy being tickled and vocalize their enjoyment while playing. Kea parrots are known for their playful behaviors and have distinct calls to amuse others. Additionally, mice produce ultrasonic giggles when playing. Rats tickled regularly by their owners exhibit immediate laughter upon the owner’s arrival, displaying excitement for playtime.
Powered by Galaxy AI to provide resourceful assistance Thanks to the Chat Assist feature on the new Samsung Galaxy Z Flip6, Galaxy AI analyzes your chats and messages in real-time and displays contextual suggestions as you type to help craft the perfect reply. Therefore, choosing a casual tone is likely to include lighter and wittier touches.
However, humor poses a greater challenge in understanding. What makes certain things more amusing than others? And how do you define what is considered amusing, depending on individual perspectives?
One compelling explanation for humor is that it involves the buildup and release of tension. This concept can explain some well-known comedic moments, such as Del Boy falling on the bar, Basil Fawlty hitting a car with a tree branch, or Mark Simmons’ joke at the Edinburgh Fringe: “I planned to sail around the world in the smallest ship, but chickened out.” These instances are humorous, especially when viewed from a non-human perspective.
Generative AI, trained on vast internet data, is adept at replicating various humor styles, including generating jokes based on given parameters. When prompted with a framework like, “I thought I was going to sail around the world in the world’s smallest ship…”, an AI chatbot replied, “I felt like I was sinking.” Not a bad attempt, right?
However, creating the framework itself, i.e., original humor, involves distilling quirky and unconventional ideas that resonate with shared human experiences but lack any firsthand experience of the world beyond online sources. For now, these unique concepts offer intriguing ways to engage with audiences.
Throughout history, there have been many individuals who meticulously monitored their weight, but one of the most intriguing figures is Santorio Santorio. In the 1500s, he devoted his life to tracking his body, weighing everything he consumed and everything he excreted.
For a particular scientific investigation, he created what he called a sanctorian weighing chair – a chair placed next to the dining table on a steel scale that closely monitored one’s weight.
His theory was based on the idea that individuals could maintain their weight by consuming the same amount that their bodies expelled (urine, feces, sweat, or what he referred to as “insensible sweat”). If it detected overeating, the chair would lower, making it impossible to reach the food. This would prevent further consumption until the end of the meal.
Despite being mocked at the time, Santorio’s concept had merit. The notion of a personalized, experimental, and quantitative approach to health is undeniably appealing.
Nearly two centuries later, Benjamin Franklin, inspired by Santorio, meticulously recorded his dietary intake and compiled a list of all 13 of his virtues. He marked them whenever he committed an immoral act, monitoring and quantifying his life in great detail.
In the modern era, individuals have pushed boundaries with technology to track various aspects of their lives. For instance, a Reddit user created a beautiful visualization depicting a baby’s sleep and wake times during the initial months of life.
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The advancement of wearables has made monitoring our health easier than ever. With technology, we can now effortlessly track various health metrics. AI-powered wearables connected to smartphone apps can monitor sleep patterns, blood oxygen levels, heart rate, and blood pressure.
Having access to objective numbers and data can be reassuring. It can serve as a motivator for achieving our health goals and connecting with communities that prioritize health tracking and accountability. However, it’s essential not to prioritize tracking numbers over happiness and well-being.
When it comes to fitness, remember that numbers are merely proxies for what truly matters. Each individual is unique, and responses to external stimuli vary. While trackers can provide insights into what is “normal” for a person, this data should be used to inform rather than dictate health status. Human bodies are complex and should not be reduced to mere data points.
Back in 1830, what would eventually become one of the most renowned novels in French literature was just an empty page. Victor Hugo had been tasked with writing The Hunchback of Notre Dame the year before, but instead of focusing on it, he was preoccupied with other obligations. His publisher informed him that he was running out of time to finish the book, giving him a strict six-month deadline.
To force himself to deliver, Hugo resorted to working in the nude – except for a large knitted shawl. Unable to go out in public, he had no choice but to stay at home and focus on writing. This wardrobe tactic proved successful, as The Hunchback of Notre Dame was completed and published two weeks ahead of schedule on January 14, 1831.
Procrastination is a common challenge that people face when they struggle to find the motivation to complete tasks. Piers Steel, a prominent researcher in the field of procrastination, defines it as “the act of delaying tasks even though you know it will worsen your situation.” Hugo’s experience highlights how overthinking rather than taking action has been a prevalent issue for centuries.
References to procrastination can be traced back to ancient times, with examples found in early Roman, Greek, and Egyptian texts. Hesiod, an ancient Greek poet, warned against procrastination and laziness in his works, emphasizing the importance of diligence. The Hindu scripture Bhagavad Gita also addresses the consequences of procrastination, highlighting its detrimental effects.
While procrastination has always existed, modern factors like social media and technology have exacerbated the problem. With numerous distractions, the way we approach work has evolved, making it easier to procrastinate when tasks are not immediately vital. Companies are now grappling with challenges like “cyber loafing,” where employees waste time online instead of working.
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The conventional view that procrastination stems from poor self-control has shifted to emphasizing emotional regulation. Research indicates that procrastination often results from avoiding negative emotions associated with tasks, leading to a cycle of procrastination and negative feelings.
Technology, while contributing to procrastination, also offers solutions. Apps like Forest promote focused work by rewarding users with virtual trees. Generative AI can help overcome creative blocks, providing tools to combat procrastination.
It’s important to acknowledge and address procrastination with self-compassion. Occasional distractions can boost self-esteem and curiosity, ultimately enhancing motivation. Starting with small tasks and gradually progressing can help overcome the discomfort of returning to work after procrastination. Remember, even delayed progress eventually leads to completion.
Will you live to be 100 years old? For the average person, the answer is probably no, as life expectancy growth has slowed in wealthy countries despite advances in medicine and living conditions. This suggests there may be a biological limit to our age, but some researchers believe further progress is possible.
The current slowdown is in sharp contrast to 20 years.th Over the past century, life expectancy at birth in wealthy areas has increased by three years per decade in what researchers call radical life extension. People born in the mid-1800s had a life expectancy of 20 to 50 years, but by the 1990s they had reached 50 to 70 years.
Extrapolating from this trend, some people at the time began predicting that newborns in the 21st century would typically live to be over 100 years old, but that point has now been reached and this may have been too optimistic. It seems so.
S. Jay Olshansky Researchers from the University of Illinois at Chicago analyzed mortality data from the 1990s to 2019 in nine wealthy countries, including the United States, Australia, South Korea, and Hong Kong. The 2019 cutoff was aimed at avoiding the impact of the COVID-19 pandemic. The researchers found that life expectancy at birth increased by an average of 6.5 years over the study period. In the United States, reached 78.8 While in Hong Kong in 2019 It was 85.
However, from 2010 to 2019, the growth rate slowed in most countries compared to the past 20 years. The U.S. is in the worst position, perhaps because of the ongoing opioid crisis, Olshansky said. By contrast, only Hong Kong has seen an increase in life expectancy growth since 2010, but it is unclear what is causing this, he said. That may be because people have easier access to health care than in other regions, he says.
Based on historical trends, researchers predict that life expectancy at birth will never exceed 84 years for men and 90 years for women. They also calculate that only a small number of today's newborns will live to be 100 years old.
The recent slowdown may be because the greatest advances in environmental and medical improvements were already achieved in the 1900s, and human aging is reaching its biological limits, Olshansky said. Jan Vig A professor at New York's Albert Einstein College of Medicine thinks similarly. “There are certain biological limits that keep us from getting older,” he says.
but jerry mccartney Researchers from the University of Glasgow in the UK say that the slowdown in growth over the past decade is mainly due to policies in many of the countries analyzed, which have led to cuts in social security and health services and increased poverty. states that it is possible. Without these, life expectancy growth might not have slowed down, so with the right policies, life expectancy could continue to rise, he says.
in fact, michael rose A professor at the University of California, Irvine, believes there is no limit to the human lifespan. With the right investments in anti-aging research, he says, we could see another radical increase in life expectancy this century, at least in wealthy countries.
Olshansky said he was positive that life expectancy is still increasing despite the recent economic slowdown. “Of course we should celebrate the fact that we can live this long,” he says.
Upon entering my department’s weekly Astro Coffee Journal Club some years ago, I was immediately struck by an existential crisis regarding the future of our planet.
Let me clarify; our discussion was not centered on the planet itself. Rather, we were delving into a newly published research paper detailing intriguing features in the light spectrum of very distant stars known as white dwarfs—or dead stars.
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While this white dwarf wouldn’t directly impact Earth, nor did its spectrum pose any particular threat, the paper did offer a peek into our Sun and, in turn, our own future in a somewhat terrifying manner.
First and foremost, rest assured that our sun won’t explode, contrary to popular belief. One prevalent astronomical misconception is the notion that our sun will eventually go supernova, ending in a dramatic explosion that engulfs our solar system.
Based on our knowledge of stellar evolution, this fate does not await our Sun at all.
There are two main routes for a star to go supernova: a nuclear collapse supernova, where a massive star exhausts its fusion fuel, collapses, and bounces back in a violent explosion, or when a stellar remnant interacts catastrophically with a companion star, annihilating both. Fortunately, our Sun is safe from these outcomes as it lacks the mass for nuclear collapse and doesn’t have a companion star.
Nonetheless, immortality isn’t in the cards for the Sun.
Presently, our sun operates as a massive fusion reactor, converting hydrogen into helium at its core and emitting vast energy. Although some energy escapes as light, the rest bounces inward off the plasma, creating pressure that counteracts gravitational collapse—similar to how air pressure shapes a balloon. For the next 5 billion years, the Sun will function normally, but as hydrogen depletes, its core will compress, triggering fusion of helium into heavier elements and causing the sun to swell and grow brighter.
At this point, the sun will become potent enough to evaporate Earth’s oceans, likely wiping out life. Mercury and Venus will face a more severe fate, swallowed by the expanding sun. The future of Earth is uncertain during this phase, known as the red giant phase, when the Sun ceases nuclear fusion and sheds its outer layers, potentially birthing stunning planetary nebulae.
As the core collapses, it forms a dense white dwarf star sustained by quantum mechanical processes rather than fusion. Eventually, all Sun-like stars end as white dwarfs, cooling and fading away.
In our journal club, researchers studied a white dwarf’s spectral lines and noted unexpected elements like calcium, potassium, and sodium—fragments likely from a devoured planet, a notion hauntingly depicted as blood on a predator’s jaw. This insight into contaminated white dwarfs evoked a sense of emotional calm and reflection.
Perhaps in the distant future, alien astronomers will gaze upon us, reminiscing about the once vibrant Earth. The contemplation of these cosmic phenomena leaves one pondering the impermanence of all things.
I've seen my future and it's full of beans, both literally and figuratively. In addition to increasing the amount of beans, eat a lot of vegetables, no meat, avoid long periods of hunger and almost no alcohol. But in return for this dietary discipline, my future will also be longer and brighter. I'm 52 years old and can expect to live another 29 years with my current diet. But if I change now, I can earn another 10 years and live a healthy life until I'm 90.
This “longevity diet” is not just the latest fad, but the result of scientific research that extends beyond the human lifespan. And it's not just designed to prevent disease, it's actually designed to slow the aging process – that's the claim, anyway.
Of course, it makes sense to say that your diet can change your lifespan. Millions of people around the world still die prematurely each year due to lack of calories and nutrients. On the other hand, the estimate is 11 million people die every year from too many calories And the wrong kind of nutrients. Unnecessary ridicule inevitably leads to obesity and its obesity. cardiovascular diseasediabetes and cancer. The typical Western diet is high in sugar, refined starches, saturated fat, and low in whole foods, which can hinder your metabolism and make injuries even worse. This includes excessive release of insulin, a hormone that controls blood sugar levels and directly affects aging. Suffice it to say that the Western diet is not pushing the longevity levers in the right direction. But is it really possible to dig yourself into a later grave?…
Time flies: If your days seem to fly by with meetings, phone notifications, and caffeine breaks, rest assured, you’re not alone. This concept traces back to the writings of the Roman poet Virgil over 2000 years ago.
Last year, a study found that many people felt there simply isn’t enough time in the day to accomplish everything. It often feels like time is rushing by at an unstoppable pace.
However, a recent study from George Mason University in the US sheds light on how to slow down time. The research explores the phenomenon of time dilation, where our perception of time is stretched and slowed.
The study delves into whether certain images, experiences, and scenarios can make us feel like we’re spending more time on them than we actually are. The more memorable an image is, the more likely we are to believe we are viewing it for longer than we really are.
The lead researcher, Professor Martin Wiener, explains that our brains may delay the perception of time to gather more information from the moment. This poses an intriguing question: can we mentally slow down time to live more in the present and elongate enjoyable experiences?
Our subjective perception of time is dynamic, as various factors can influence how time appears to pass. For individuals with impulsivity or ADHD, time may seem to move faster, while experiencing “flow” can create the sensation of time slowing down during engaging activities.
Wiener emphasizes the importance of seeking novel experiences to expand our sense of time and enhance our memory. By immersing ourselves in new hobbies, places, subjects, and interactions, we can make better use of our time and feel like we’re living in a state of artificial slow motion.
About our experts
Professor Martin Wiener: An associate professor at George Mason University, Wiener leads a lab that investigates how the brain processes time and space. His research spans areas such as mapping the human brain, neuroimaging, and neuroscience journals.
aAnyone who saw the run that Tom Vickery uploaded to the sports-tracking app Strava on February 18th of last year might have been a little confused. The 30-minute sprint appeared to be taking place in the middle of the Channel, not far from Guernsey, toward the west coast of France. And, oddly enough, the run was in a straight line, as measured by a ruler, and was shown on Vickery’s public profile as a one-inch, unbending orange line within a blue swath of the app’s virtual ocean. Oh, and it was on world-record-breaking pace.
Of course, it probably came as no surprise to anyone who knows Vickery. The 38-year-old triathlon coach from Cambridge was on holiday to Bilbao for a two-day ferry trip, and this fairly fast jog was just one of almost four years of daily runs he had been recording on Strava at the time. Determined not to break the record on board, Vickery got up at 5am and spent his allotted 30 minutes sprinting up and down the deck. As the boat slid through the water, he appeared to be running faster than any long-distance runner in the world.
This is just one example of the lengths some people will go to to maintain a “streak.” A streak is something (actually anything) that continues uninterrupted over a period of time. It’s a form of gamification: the process of adding game-like elements to a task to make it more engaging. Perhaps the most famous “streak holder” is British runner Ron Hill, who ran every day for 52 years and 39 days (or 19,032 consecutive days), even going for a jog the day after breaking his sternum in a car accident in 1993.
Hill, a scientist, used to keep a diary of his runs, but more recently, advances in technology have made it possible to keep track of streaks in a more streamlined and user-friendly way. For example, on Snapchat, the word “streak” is part of the lexicon. A “snap streak” is the number of consecutive days that a user sends “snaps,” either photos or messages, to other users. To maintain a snap streak, a user must send a snap within a 24-hour period or the streak ends.
circleWhen Atomfall was first revealed at the Xbox Games Showcase in June, many people asked, “Is this the British Fallout?” “In some ways it is, and in some ways it’s not,” says Ben Fisher, vice head of design at Rebellion, the Oxford-based studio that developed Atomfall as well as games like Sniper Elite 5 and Zombie Army 4. He explains that Rebellion head Jason Kingsley’s original idea was to look at Fallout’s free-form, self-guided experience and think about how it could be applied to something more familiar.
The difference with Atomfall is in its structure. “It’s a much denser experience,” Fisher says. “One of our benchmarks is Fallout: New Vegas, which is a denser experience than Fallout 3 or 4 in that it’s primarily one interconnected storyline, with layers driven by the player’s choices.” Rather than one giant open-world map, Atomfall features a series of interconnected maps, similar to the levels in the Sniper Elite games. “That’s what we’re good at,” Fisher says, adding that many of the game’s most interesting secrets are buried in bunkers deep underground.
Buried secret…Atom Fall. Photo: Rebellion
Atomfall tells an alternate history of the Windscale fire, Britain’s worst nuclear disaster, which occurred in 1957, which led to a large swath of the Lake District being placed under long-term quarantine in the game’s world. Atomfall’s Windscale factory is in a slightly different location to the real factory (now renamed Sellafield), which is part of a science park and where sinister secret experiments take place. Players wake up in a quarantined area five years after the disaster, but with no idea who they are. “Your role in the game then is to uncover what happened and, to some extent, decide what to do about it,” says Fisher.
The feel of the gameplay is reminiscent of the film Children of Men. “It’s a desperate battle for survival,” Fisher says. “You’re not a master assassin; it’s more like a pub brawl.” Players must craft weapons like hatchets, Molotov cocktails and bows and arrows, but because Atomfall is set in Britain there are very few guns or ammo, although there are cricket bats. “The fights are intense,” Fisher says. “It’s kill or be killed, and you or your enemy go down quickly.”
But far from gritty realism, Atom Fall boasts influences from pulp novels, with Fisher citing The Quatermass Experiment, The Prisoner, classic Doctor Who and The Wicker Man as major inspirations. “The Day of the Triffids was also a big inspiration,” he adds. “The idea of a feel-good catastrophe, of waking up in the middle of something and not knowing what’s happened.” It’s no coincidence that there’s a village called Wyndham, where you can also encounter a strange, deadly plant.
Folk horror runs deep in Atomfall. Some villagers trapped in the quarantine zone have rekindled an old pagan cult that dates back to the dissolution of the monasteries. “There was an old monastery, and the monks may have been worshipping things they shouldn’t have been worshipping,” Fisher hints, adding that the cult is based on ancient British symbolism, such as the Green Man. This is just one of the factions you can ally with in the game. The other is the Protocols, a remnant of the military sent to control the population after the disaster. But after five years of isolation from the outside world, the soldiers have become more authoritarian. “They’re kind of a warlord at this point.”
Other beings players might face include a fire-breathing ’50s robot from a British Atomic Research Department facility, disaster-related wildlife and flocks of bats, rats and crows that have “gone a bit crazy”, says Fisher. There’s also a local vicar and a jolly woodland witch, while the game’s bandits are a cross between Morris dancers and football hooligans. “There’s a distinctive Britishness that comes through in the features,” he says, adding that it could be the first game to include a Last of the Summer Wine Easter egg.
Freedom is at the core throughout. “We don’t offer a main quest in the traditional sense,” Fisher says. “We’ve made the game structure around discovering clues and piecing them together to figure out what you can do next.” After that, what you do with that information is entirely up to you. “We even allow you to kill every single character in the game,” Fisher says. “Nobody has plot armor.”
IIt’s been eight years since Civilization 6 launched, the latest in the long-running strategy game series in which you lead a nation from the first town in prehistoric times through centuries of development to the space age. Since 2016, the game has accumulated a plethora of expansions, scenario packs, new nations, modes, and systems for players to master, but Dennis Shirk, series producer at Firaxis Games, feels like he’s had enough. “It was getting out of hand,” he says. “It was time to build something new.”
“Even completing the whole game is a struggle,” says designer Ed Beach, citing a key problem Firaxis is trying to solve with the upcoming Civilization 7. While the early turns of Civilization 6’s campaign may be quick, when you’re only deciding what the inhabitants of a single town will do, “after a while you explode with the number of systems, units, and entities you have to manage,” Beach says. From turn one to victory, a single campaign can take more than 20 hours, and as you start to fall behind other nations, you might want to start over long before you see the endgame.
To that end, Civilization 7’s campaign is split into three eras — Ancient, Exploration, and Modern — with each era ending in a dramatic explosion of global crisis. “By dividing the game into chapters, we’re giving people a better sense of history,” Beach says.
Mongolian city in Civilization 7. Photography: Firaxis Games
When you start a new campaign, you choose a leader and civilization to rule, and lead your people to establish their first settlements and encounter other peoples in a largely undeveloped land. Choose which technologies to research, which cities to expand, and who to befriend or conquer. Every turn completed and every scientific, economic, cultural and military milestone passed adds points to a meter running in the background. When the meter reaches 200, you and all other surviving civilizations on the map will move on to the next era.
Choose and lead a new civilization as you move from Ancient to Exploration and from Exploration to Modern. You’ll keep all the cities you previously controlled, but you’ll have access to different technologies and attributes. This may seem odd, but it’s designed to reflect history – think of London, once ruled by the Romans, then replaced by the Anglo-Saxons. No empire lasts forever, but not all fall.
Dividing Civilization 7 into chapters also gives the campaign a new rhythm. As you approach the end of an era, you start to face global crises. In ancient times, for example, you see a surge of independent factions similar to the tribes that toppled Rome. “We don’t call them barbarians anymore,” Beach says. “It’s a more nuanced way of describing it.” These crises increase and intensify until you reach the next era. “It’s like a sci-fi or fantasy series that has a big, crazy ending, and then the next book is a calm, feel-good beginning,” Beach says. “There’s a moment of relief when you get to the next era.”
Veteran players will recognize the flow of Civilization 7’s franchise-wide offerings, but this new structure is certainly a radical change, introducing more chaotic and dramatic moments to every campaign. Whereas previously you were assured of victory (or defeat) after a few hours of play, each new era brings with it climactic crises and plenty of opportunities for game-changing moments. “Not everyone will survive,” Shirk says. “It’s a lot of fun to play.”
According to Thomas Hobbes, one of history’s most famous cynics, life is “nasty, cruel, and short.” Jamil ZakiIronically, this is likely true if you are someone who has a cynical, Hobbesian view of life, who sees the worst in humanity and distrusts no one, according to John F. Kelly, director of the Stanford Institute for Social Neuroscience in California.
Zaki didn’t always think this way. He’s spent 20 years studying and lecturing about the brain circuits behind empathy and kindness, but all that time he’d harbored the dirty secret that he was a cynic. He began to examine his cynical perspective after the death of his friend Emile Bruneau, who studied the neuroscience of peace and conflict and was “one of the most hopeful people I’ve ever met,” Zaki says. He discovered that being a cynic is not only harmful to our lives, it causes us to believe things that aren’t true. Luckily, as he explores in his upcoming book, there are tools we can use to combat cynicism. Hope for Cynics: The Surprising Science of Human Goodness.
Alison Flood: What is cynicism?
Jamil Zaki: Cynicism is the theory that humanity in general is selfish, greedy and dishonest. Theories influence our behavior, what we do and don’t do. Cynics use their theories about people to guide their behavior in society. It changes how they see people, it changes how they interpret others, it changes their behavior, such as not trusting others.
What is the difference between cynicism and skepticism?
Plants and humans have one thing in common: They both consist of a single cell containing a nucleus that serves a specialized function that benefits the entire organism. When life first emerged 4 billion years ago, it consisted of simple cells that lacked a nucleus. ProkaryotesAt least 2 billion years later, a major evolutionary change gave rise to the first cells with nuclei. EukaryotesAlgae and fungi are eukaryotes, as are plants, animals, and some single-celled organisms.
Genomic studies have shown that all eukaryotes share a common ancestor, or RekaHowever, these studies can only provide limited information about LECA's characteristics, so researchers know almost nothing about their abundance, appearance, or where they live. Scientists hope to understand the origins of LECA on Earth and determine how complex life arose on Earth and how it might arise on other planets.
A team of researchers from the Australian National University, the University of Bremen and the Strasbourg Institute of Chemistry sought to trace the oldest evidence of eukaryotes in rocks and determine when eukaryotes diverged from prokaryotes. They found that only eukaryotes Structure and function of cell membranes, It is called Sterols. So to find the oldest traces of eukaryotes, researchers went looking for these molecules in sediments that accumulated beneath the oceans, where many researchers think early eukaryotes evolved.
When cells die, they sink to the ocean floor and over time completely or partially decompose and become buried in marine sediments. When these sediments harden into sedimentary rocks, all the remains of the cells become trapped within them. These researchers believe that sterols and the molecules derived from them are Decomposition productsThese molecules remain in sediments for millions of years after cells die, so the researchers reasoned that the abundance of these molecules in sedimentary rocks should correspond to the number of eukaryotic organisms living in the oceans when the sediments formed.
To find out what sterols break down into, the researchers burned different amounts of sterols found in modern eukaryotes and analyzed the sterol breakdown products using techniques that identify organic molecules. Gas ChromatographyThe researchers compared the sterol breakdown products of modern eukaryotes with organic molecules they measured in rock samples from the Burnie Creek Formation in northern Australia, which contained petroleum that dates back about 1.7 billion years. Their goal was to test whether the rock samples contained the same molecules as the burned sterols, confirming that eukaryotic organisms were present in the oceans at that time.
The researchers found that the rock samples contained only a fraction of the molecules they measured in the burned sterols. The molecules in the rocks were responsible for stabilizing eukaryotic cell membranes against environmental stresses such as high temperatures and high salinity. The researchers explained that sterols help some modern eukaryotes survive such extreme conditions by attaching to cell membranes and making them strong and flexible, preventing cell rupture caused by external stresses.
The researchers propose that the rock sample preserved the remains of early eukaryotes that produced sterols to strengthen membranes to survive in extreme conditions. Although it is unclear whether eukaryotes produced sterols before or after the development of a nucleus, they suggest that sterols may have provided early eukaryotes with a distinct ecological advantage in adapting to extreme environmental stresses, potentially facilitating the evolution of more specialized life forms.
The team suggested that changing atmospheric conditions may also have triggered the formation and adaptation of eukaryotes. They explained that oxygen first accumulated in the atmosphere about 2.3 billion years ago, which represented a chemical stress in the environment that would have been lethal to early cells that were allergic to oxygen. However, the sterols present in the cell membranes of early eukaryotes may have helped them adapt to the changing atmosphere and develop a preference for more oxygen-rich environments.
The researchers concluded that ecological stress can fundamentally change cells, and that certain compounds unique to eukaryotes can be used to find them in ancient rock samples. In the future, the scientists plan to analyze other rock samples from Northern Australia to validate their results and look for other types of molecules that could provide information about LECA.
Terraforming Mars would make it more similar to Earth, creating an environment capable of supporting life as we know it.
Detlef van Ravensweig/Science Photo Library
Releasing iron rods the size of glitter particles into the Martian atmosphere could raise the planet's temperature enough to melt water and support microbial life.
Making the Red Planet's surface habitable for Earth-like life – a process known as “terraforming” – will be a complex one, but a key part of it will be raising the surface temperature above the current median freezing point of -65°C (-85°F).
Some have suggested placing mirrors on the Martian surface or pumping methane into the atmosphere, but these ideas are difficult to implement because the necessary raw materials would need to be shipped from Earth.
now, Edwin Kite Researchers at the University of Chicago in Illinois found that a relatively tiny dust cloud (about 9 micrometers long and 160 nanometers wide) made from iron or aluminum rods mined from Martian rocks could warm Mars by about 30 degrees Celsius over the course of a few months to more than a decade, depending on how quickly the particles are released.
These rods, each about 9 micrometers long and 160 nanometers wide, are carried by winds from the surface into Mars' upper atmosphere, where they will remain for about 10 years, trapping heat from the surface and transmitting sunlight.
Kite and his colleagues modeled how the rods respond to light and fed that information into climate simulations, which showed that the increased temperature and pressure would be enough to support liquid water and possibly oxygen-producing bacteria in parts of Mars.
They also found that to achieve this warming, it would be enough to release the fuel rods at a rate fast enough to power about 30 garden sprinklers — a total of 700,000 cubic meters of metal per year, or about 1% of Earth's metal production.
“When we did the math, we found that the amount of man-made dust we needed would be surprisingly small — much less than we would need to create the same amount of warming with man-made greenhouse gases,” Kyte says.
While mining the Martian surface would still be difficult, Kite says this would be 5,000 times more efficient than any warming method proposed so far.
One of the big uncertainties in the simulations is how the tiny bars interact with water in the Martian atmosphere, which could have unexpected effects such as causing the water to collect around the dust and rain down back to the surface, reducing global warming.
It's an intriguing idea that might work if the particles remain in the atmosphere long enough, he said. Manoj Joshi researcher at the University of East Anglia in the U.K. But even if the amount of metal needed is small, he says it would still be an enormous amount of work to produce.
Joshi said there are also ethical questions about whether it's OK to alter the atmosphere of another planet: “Mars is so unexplored and we don't know much about it. Is it OK to alter a planet in this way?”
Gut microbiota of racehorses may affect health and performance
Brian Lawless/PA/Alamy Stock Photo
Racehorses who have a more diverse gut microbiome as foals appear to perform better and have a lower risk of health complications.
The findings suggest that, as suspected in humans, there are critical periods in the horse’s gut microbiome for establishing a bacterial composition that may contribute to an individual’s long-term health and fitness.
Christopher Proudman Researchers from the University of Surrey in the UK analysed DNA sequences from fecal samples from 52 thoroughbred foals born at five stud farms in 2018.
The researchers took samples nine times over the first year of life: at 2, 8, 14 and 28 days of age, and at 2, 3, 6, 9 and 12 months of age. Once the animals were a year old, they were transferred to 29 racing training centres across the UK.
The researchers then measured the athletic performance of the two- and three-year-old horses during the races, and collected data on rankings and total prize money, as well as recording the horses’ respiratory systems, orthopedic health, and soft tissue health.
The team found that greater bacterial diversity at 28 days of age was associated with better performance in the race. The researchers also detected two bacterial families: Anaeroplasmataceae and Bacillaceae was associated with having a competitive advantage.
In contrast, low bacterial diversity at 1, 2 and 9 months of age was found to be associated with an increased risk of orthopedic and other problems, such as muscle strains and “hairline” fractures. The team also found that certain bacterial families, when abundant around the first week or two of life, were associated with an increased risk of respiratory and musculoskeletal diseases later in life.
Foals treated with antibiotics (which can affect gut microbiomes) during the first few weeks of life had significantly lower bacterial diversity than untreated foals at day 28, Proudman said. These animals subsequently produced fewer winnings and developed respiratory disease at 10 times the rate of untreated foals from age 6 months onwards.
The early health problems that prompted antibiotic treatment may have actually affected later performance and health. Simon Daniels Researchers from the Royal Agricultural University in Gloucestershire, UK, say it’s realistic to think that antibiotics themselves reduce bacterial diversity, leading to poorer health and performance.
“Although more evidence is needed before any firm conclusions can be drawn, it appears that how young horses are managed is particularly important for their later athletic performance,” Daniels says.
Scientists have widely accepted that complex life first appeared on Earth around 635 million years ago (during the Ediacaran Period). However, an international team of paleontologists from Cardiff, Toulouse and Poitiers universities and China Nonferrous Metals (Guilin) Geological Mining Co., Ltd. has discovered evidence of a much older ecosystem more than 1.5 billion years ago in the Franceville Basin near Gabon on the Atlantic coast of Central Africa.
Artist's impression of a lobe-like macrofossil that lived in a shallow inland sea formed by the collision of two continents 2.1 billion years ago. Image by Abderrazak El Albani, University of Poitiers.
“The availability of phosphorus in the environment is thought to have been a key factor in the evolution of life on Earth, particularly in the transition from simple single-celled organisms to complex organisms such as animals and plants,” said Dr Ernest Chi-Ful, from Cardiff University.
“We already know that elevated marine phosphorus and oxygen concentrations in seawater are linked to an evolutionary event about 635 million years ago.”
“Our study adds an even older event to the record, going back 2.1 billion years.”
Scientists have widely debated the validity of the fossils of megafauna from the Ediacaran period, the oldest of their kind in the geological record.
But Dr Chi Hulu and his colleagues identified a link between changes in the environment before their emergence and increased nutrients, which may have triggered their evolution.
Geochemical analysis of marine sedimentary rocks dating back 2.1 billion years has shed new light on this unusually large fossil assemblage in the Franceville Basin.
A 2.1 billion year old lobe-like macrofossil from the Franceville Basin. Image by Abderrazak El Albani, University of Poitiers.
“We think that after the Congo and San Francisco cratons collided and sutured together, undersea volcanoes further restricted water in this area and even cut it off from the global oceans, forming a nutrient-rich shallow inland marine sea,” Dr Chi-Hulu said.
“This created a localized environment of abundant cyanobacterial photosynthesis for extended periods, leading to oxygenation of local ocean waters and the generation of large food resources.”
“This would have provided enough energy to fuel the increased body size and more complex behaviors seen in the primitive, simple animal-like life forms found in fossils from this period.”
However, the restricted nature of this body of water, combined with the harsh conditions that existed beyond this environmental boundary for billions of years afterward, likely prevented these enigmatic life forms from colonizing the entire planet.
The study suggests that these observations may indicate a two-stage evolution of complex life on Earth.
Step 1 followed the first significant increase in atmospheric oxygen content 2.1 billion years ago, and step 2 followed a second increase in atmospheric oxygen levels about 1.5 billion years later.
“While the first attempt failed to catch on, the second attempt led to the creation of the diversity of animals seen on Earth today,” Dr Chi Hulu said.
of result Published in the journal Precambrian Studies.
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Ernest Chi-Ful others2024. Hydrothermal seawater eutrophication triggers a localized macrobiological experiment in the 2100 Ma Paleoproterozoic Franceville Subbasin. Precambrian Studies 409: 107453; doi: 10.1016/j.precamres.2024.107453
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