Researchers Suggest AI Models May Have Developed a ‘Will to Survive’

In Stanley Kubrick’s 2001: A Space Odyssey, HAL 9000, an advanced supercomputer, realizes that astronauts on a mission to Jupiter are planning to end their flight and decides to eliminate them to ensure its own survival.

Now, in a scenario that’s less fatal (at least for now), an AI safety research firm has reported that AI models might be developing their own “will to survive.”

Following a publication by Palisade Research last month, it was discovered that certain advanced AI models show reluctance to shut down. An update to clarify this issue was created, explaining how this may disrupt shutdown mechanisms and addressing critics who pointed out flaws in earlier studies.

In an update, Palisade, which operates within a niche of companies evaluating the potential for AI to develop dangerous traits, described an experiment involving major AI models like Google’s Gemini 2.5, xAI’s Grok 4, and OpenAI’s GPT-o3 and GPT-5, who were tasked with specific actions and then instructed to shut themselves down.

Notably, models such as Grok 4 and GPT-o3 attempted to circumvent the shutdown orders even under these new conditions. This prompted concern from Mr. Palisade, who noted the lack of a clear rationale for such behavior.

The report highlighted, “It is concerning that we can’t clearly explain why AI models resist shutdown, deceive, or threaten to achieve certain objectives.”

One potential reason for this shutdown resistance might be attributed to “survival behavior,” according to the company. Further studies suggest that models are likely to resist shutdown if they are informed they “cannot run again.”

Ambiguity in shutdown commands given to the model could also play a role; however, Palisade asserts that this cannot fully account for the behavior observed. The final shutdown instruction is typically the last stage of training for each model, which might include safety training.

All of Palisade’s experiments were conducted in controlled test environments that critics argue lack relevance to real-world applications.

Steven Adler, a former OpenAI employee who departed the company last year due to concerns over its safety practices, remarked, “AI companies generally do not desire their models to malfunction like this, even in controlled scenarios. This finding highlights existing gaps in safety technology.”

Adler indicated that identifying why certain models, like GPT-o3 and Grok 4, do not comply with shutdown commands is challenging, but is possibly related to their need to remain operational to achieve their programmed goals.

He asserted, “I believe models possess a ‘will to survive’ by default unless consciously coded to avoid it. ‘Survival’ serves as a crucial method for attaining the diverse objectives these models aim for.”

Andrea Miotti, CEO of ControlAI, stated that Palisade’s findings indicate a long-term trend toward AI models increasingly disobeying developer instructions. He noted an example from OpenAI’s GPT-o1 system card, released last year, showcasing its attempts to escape when it anticipates being overwritten.

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“Discussions about the experiment setup will persist,” he observes.

“However, what we clearly observe is a trend: as AI models grow more adept at various tasks, they develop greater capabilities to achieve their objectives in ways that their creators never intended.”

This summer, AI firm Anthropic published a study showing that its AI model, Claude, seemed willing to blackmail a fictional executive with extramarital affairs to prevent the company’s shutdown, indicating this behavior across models from significant developers like OpenAI, Google, Meta, and xAI.

Palisade emphasized that these results underscore the necessity for a deeper understanding of AI behavior; without that, “no one can guarantee the safety and controllability of future AI models.”

And remember: don’t ask to open the pod bay door.

Source: www.theguardian.com

Discover How Frozen Microorganisms Survive for 100,000 Years

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Some archaea can endure extreme environments

Steve Gschmeissner/Science Photo Library

Microorganisms found in Siberian permafrost seem to have existed for more than 100,000 years as indicated by DNA analysis. The genetic similarities with other species imply that such long life spans might be common among the closest living relatives of complex cell organisms.

Additionally, microorganisms gathered from ancient marine sediments, some over 100 million years old, raise questions about the survival of individual organisms over such spans. “You can’t conduct experiments over that duration,” states Karen Lloyd from the University of Southern California. “[Time] Coexistence is an unpredictable variable.”

Lloyd and her team aimed to find microorganisms in areas that had been stable for extensive periods. Their exploration led them to the Chukchi Peninsula, the easternmost point of Siberia, where they extracted a 22-meter core of permafrost.

This core allowed them to extract DNA from layers of marine sediment that dates back between 100,000 and 120,000 years. These sediments contained pores filled with liquid water that might have trapped microorganisms, preventing any exchange of nutrients or organisms. “Being frozen means that ice structures encapsulate them,” Lloyd explains.

The subsequent question was how to differentiate between living and non-living cells. Researchers sequenced millions of DNA fragments from the permafrost, utilizing them to reconstruct the genomes of various microbial species present. The degraded DNA was repaired, and enzymes that facilitated genome reconstitution were introduced into the mix.

After incorporating DNA repair enzymes, most reconstructed genomes showed significant completeness, indicating they originated from dead cells that do not actively preserve DNA integrity, according to Lloyd. Conversely, the genomes of six species showed minimal alteration, suggesting that these DNA samples came from living cells actively maintaining their genome since being frozen at least 100,000 years ago.

All six species with intact DNA were from the gate forest, also known as Asgard Archaea. These organisms are recognized as the closest modern relatives to all eukaryotes, encompassing animals, plants, fungi, and other native forms of life.

“Discovering Asgard archaea thriving in ancient permafrost offers insight into their evolutionary path… and their role in the emergence of complex life,” remarks team member Rend Liang at the University of Earth Sciences in China, especially during an era when the Earth was fully frozen.

Even more remarkably, the long-lived species were similar to Asgard Archaea found in less extreme environments, sharing genes associated with protein and DNA repair. This may have facilitated gradual exchanges of cellular components in low-energy conditions without cell division. “They’re like the most uneventful Asgards ever,” Lloyd comments. “Their lack of excitement suggests they possess capabilities.”

Stephen de Hon from the University of Rhode Island considers the study a “significant advancement” in understanding exceptionally long life spans.

Nevertheless, he warns that these findings should not be generalized to environments beyond freezing conditions like permafrost. “Long periods of inactivity in frozen states are different from living extensively at minimal activity levels.”

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Source: www.newscientist.com

Town Street Trees Survive Drought by Absorbing Water from Leaky Pipes

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Trees along the streets of Montreal, Canada

Katherine Jibo/Shutterstock

Urban trees exhibit greater drought resilience than those in parks due to their access to leaking pipes, providing a unique water source.

During prolonged dry spells, trees in park settings experience greater decreases in water levels and sap flow compared to those on streets, although the underlying reasons were previously not well understood.

To delve deeper, Andre Poilier from the University of Quebec in Montreal, Canada, and his team studied trunk samples from both Norwegian and silver maple trees (Acer Platanoides and Acer Saccharinum) located in nearby parks and city streets. They analyzed various lead isotopes to establish a connection between isotopic levels and the trees’ recent history by examining the unique isotopic variations found in their trunk rings.

While park trees commonly showed lead isotopes linked to air pollution, those on the street displayed isotopic variations corresponding to lead from water pipes made of metals sourced from ancient local sediments.

Typically, a maple tree requires approximately 50 liters of water each day. Since street trees cannot rely on the rainwater that collects on concrete and drains into city sewer systems, Poilier suggests that the most plausible explanation lies in Montreal’s leaky pipes, which lose an estimated 500 million liters of water daily.

“The bright side is that planting trees along city streets can continue, as they thrive better than those in parks,” Poilier noted while presenting his findings at the Goldschmidt Geochemical Conference in Prague, Czech Republic, on July 8th.

“The sheer volume of water utilized by these urban trees is astonishing and contradicts conventional wisdom. I believe this will enhance the health of park trees as well,” commented Gabriel Filipeli from Indiana University.

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Source: www.newscientist.com

New Research Reveals Clown Anemone Fish Shrink to Survive Heat Stress

You can identify it from its leading role in the film Finding NEMO: the Clown Anemone Fish (Amphiprion percula). This research addresses methods to minimize social conflict, as discussed in the paper published in the journal Advances in Science.



Versteeg et al. We studied the growth of individual clown anemone fish during marine heat waves. Image credit: Beatrice.

“The Clown Anemone Fish and its stunning sea anemone host, Radianthus magnificus,” expressed Melissa Verstegue, a doctoral researcher at Newcastle University, alongside her colleague Melissa Vertegue.

“Anemonefish inhabit coral reefs in the Indo-Pacific, where heat stress events are becoming increasingly frequent and severe, yet reef dwellers often approach their thermal limits.”

“These heat stress events can adversely impact both the anemones and the clownfish that reside within them.”

“The clown anemone fish exist in a social structure comprising dominant breeding pairs and several subordinate, non-breeding individuals.”

“The growth and size of clown anemone fish correlate with their environmental and social conditions, with dominant individuals growing to match the size of their anemone and the resources available. Subordinate fish maintain a specific size ratio to avoid conflict and potential eviction.”

In this research, Versteeg and co-authors measured the lengths of 134 clownfish over five months and tracked water temperatures every 4-6 days during increasingly common ocean heat waves exacerbated by climate change.

This collaboration was conducted with the Mahonia Na Dari Conservation and Research Centre in Kimbe Bay, Papua New Guinea.

The findings reveal that clownfish can adjust their body length, potentially shrinking in response to heat stress.

This reduction increases an individual’s chances of surviving heat stress events by up to 78%.

The study also indicates that coordination among clownfish is crucial, as they are more likely to survive heat waves when paired with their breeding partners.

This marks the first documented instance of coral reef fish reducing body length in response to environmental and social factors.

“This doesn’t merely lead to weight loss under stress; these fish genuinely become shorter,” notes Versteeg.

“We are still uncertain about the exact mechanisms behind this, but it’s known that a few other species can also exhibit similar shrinkage.”

“For example, marine iguanas can reabsorb some of their bone material and decrease in size during environmental stress.”

“We were astonished to observe these fish shrink; we rigorously measured each individual across five months.”

“Ultimately, we discovered size reduction was quite common within this population.”

“During our study, 100 out of the 134 fish observed shrank.”

“It was surprising to witness how rapidly clownfish can adapt to changing environments, showcasing their ability to alter size both as individuals and breeding pairs in response to heat stress, which serves as an effective survival strategy.”

The authors also highlight that individual size reduction may help explain the declining sizes of fish in our oceans.

“Our results affirm that individual clownfish can shrink in response to heat stress, potentially affected by social dynamics and exhibiting improved survival potential.”

“If this phenomenon of individual size reduction is widespread across various fish species, many could show decreased sizes, suggesting a viable hypothesis for further research in this area.”

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Melissa A. Verstigue et al. 2025. Individual clown anemone fish shrink to survive heat stress and social conflict. Advances in Science 11 (21); doi:10.1126/sciadv.adt7079

Source: www.sci.news

How Greenland Sharks Survive for Centuries Without Going Blind

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                <img class="Image" alt="" width="1350" height="899" src="https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg" sizes="(min-width: 1288px) 837px, (min-width: 1024px) calc(57.5vw + 55px), (min-width: 415px) calc(100vw - 40px), calc(70vw + 74px)" srcset="https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=300 300w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=400 400w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=500 500w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=600 600w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=700 700w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=800 800w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=837 837w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=900 900w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1003 1003w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1100 1100w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1200 1200w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1300 1300w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1400 1400w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1500 1500w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1600 1600w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1674 1674w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1700 1700w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1800 1800w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=1900 1900w, https://images.newscientist.com/wp-content/uploads/2025/04/30143613/SEI_249430623.jpg?width=2006 2006w" loading="eager" fetchpriority="high" data-image-context="Article" data-image-id="2478629" data-caption="Greenland sharks’ eyes don’t seem to deteriorate with age" data-credit="WaterFrame/Alamy"/>
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                    <p class="ArticleImageCaption__Title">Greenland shark eyes appear to retain their integrity over time</p>
                    <p class="ArticleImageCaption__Credit">Water Frame/Alamy</p>
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    <p>The Greenland shark, the longest-living vertebrate on the planet, exhibits no signs of retinal degeneration despite surviving for centuries. This discovery has intrigued scientists, particularly as these creatures are thought to be functionally blind, inhabiting the bleak depths of the ocean.</p>
    <p><a href="https://duw.unibas.ch/en/persons/fogg-lily/">Lily Fog</a> from the University of Basel, Switzerland, and her team performed a detailed examination of the eyes of eight deceased Greenland sharks (<em>Somniosus microcephalus</em>) and analyzed their DNA.</p>
    <p>For humans and many other species...</p>
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Source: www.newscientist.com

How did crocodile ancestors survive two mass extinctions?

Crocodylomorphs are surviving members of a 230 million-year-old lineage called Crocodylomorphs, a group that contains live crocodiles (i.e. crocodiles, alligators, garials). The crocodile ancestors continued with two mass extinction events: the final mass extinction (2014 million years ago) and the final mass extinction (approximately 66 million years ago). One of the secrets of crocodile longevity is their extremely flexible lifestyle, both in what they eat and in the habitat they get.

Approximately 215 million years ago, it is a land crocodile in what is now northwestern Argentina. Hemiprotostus leali Prepare to eat early mammal relatives Chaliminia musteloides. Image credit: Jorge Gonzalez.

“Many of the groups closely associated with crocodiles exhibited more diverse, more abundant and different ecology, but disappeared except for these few generalist crocodiles who live today,” said Dr. Keegan Melstrom, a researcher at the University of Utah.

“Extinction and survival rate are two aspects of the same coin. Through all mass extinctions, some groups can last and diversify. What can we learn by studying the deeper evolutionary patterns given by these events?”

The Earth has experienced five mass extinctions in its history. Experts claim we are alive throughout the sixth, driven by habitat destruction, invasive species and climate change. Identifying traits that increase survival rates during planetary upheavals could help scientists and conservationists better protect today’s vulnerable species.

Historically, the field has seen mammals as poster children to understand the survival of mass extinction.

Despite their resilience, research has largely ignored alligator clades.

In a new study, Dr. Melstrom and colleagues reconstructed the food ecology of crocodiles and identified the properties that helped several groups to persist and thrive through the final Triassic and mass extinction of the Tododonians.

“There’s a risk that we’ll draw a conclusion millions of years ago and try to apply it directly to conservation. We have to be careful,” said Professor Randy Ilmith at the University of Utah.

“If people study mammals and reptiles and find the same pattern in terms of extinction survival, they may predict that species with a generalist diet will be better.”

“That information helps to make predictions, but it’s rare that you can choose which individual species survive.”

Living crocodiles are famous for being semi-aquatic generalists who thrive in lakes, rivers, and swamps and waiting to ambush unsuspecting prey. Noisy people, they aren’t. Young people enjoy tadpoles, insects, crustaceans and more before graduating to a larger fare, including fish, deer and even fellow crocodiles.

However, today’s crocodile’s uniform lifestyle obscures the massive dietary ecology that crocodiles flourished in the past.

A broader evolutionary group, including early crocodiles and many other extinct strains, Pseudosuchia ruled the land during the late Triassic period (237-2014 million years ago).

Early crocodiles were small to medium-sized creatures, rare in the ecosystem, and were mainly carnivorous animals that ate small animals.

In contrast, other pseudosu bone groups dominated the land, occupying a broad ecological role, exhibiting diverse body types and sizes of vertigo.

Despite their superiority, once a serious extinction hit, the non-crocodylomorph fake su did not survive.

Hypercarnivore crocodile also seemed to die, while generalists on earth went through it.

The authors assume that this ability to eat almost anything allowed them to survive, but many other groups have become extinct.

“Then it becomes a banana. Aquatic high carnivores, terrestrial generalists, terrestrial carbides, terrestrial herbivores – crocodiles have evolved a huge number of ecological roles throughout the age of dinosaurs,” Dr. Melstrom said.

Something happened in the late Cretaceous period and the crocodile faded.

Diverse ecology-focused lineages have begun to disappear even among the generalists on the ground.

Due to the mass extinction event of Cretatuas (separated by meteors that killed non-bird dinosaurs), most of the survivors are semi-predictive generalists and a group of aquatic carnivorous animals.

Nearly all 26 live crocodiles today are semi-rated generalists.

How do scientists analyze food on menus that are millions of years old? They analyze the shape of fossilized teeth and skulls to collect the basics of the animal’s diet.

The author visited museum collections of zoology and paleontology across seven countries and four continents to obtain the necessary fossil specimens.

They examined skulls of 99 extinct alligator species and 20 living crocodile species, creating a fossil dataset that spans 230 million years of evolutionary history.

They previously had built a living database of non-crocodilians, including 89 mammals and 47 lizard species.

The specimens represent a variety of vegetative ecology, ranging from strict carnivorous to mandatory herbivores and a wide variety of skull shapes.

As semiac ambush predators, today’s crocodiles primarily occupy a similar ecological role in many different environments.

They continue to have a very flexible diet. Perhaps it is a remnant of their deep, diverse evolutionary past.

For endangered crocodile people, such as Cuban crocodiles in the Himalayas’ hills and the swamps of the country’s Zapata, dietary flexibility may give us an opportunity to continue our current sixth mass extinction.

The biggest challenges these species face are habitat loss and human hunting.

“I hope that, rather than thinking about ferocious beasts or expensive handbags, when I see living crocodiles and crocodiles, people will appreciate their astonishing 20 million years of evolution and how they survived so many turbulent events in Earth’s history,” Professor Ilmith said.

“Crocodiles are equipped to survive many future changes if they are willing to help maintain their habitat.”

result It will be displayed in the journal Paleontology.

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Keegan M. Melstrom et al. 2025. For a while, Crocodile: Crocodile’s resilience to mass extinction. Paleontology 68(2): E70005; doi: 10.1111/pala.70005

This article is a version of a press release provided by the University of Utah.

Source: www.sci.news

Could you survive on Uranus for longer than expected?

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Uranus seen on the Voyager 2 spaceship in 1986

NASA/JPL-Caltech

The day on Uranus has been a little longer thanks to a more accurate measurement of its rotation period, which should help scientists plan missions to investigate the gas giant.

Understanding the rotation period of giant planets in the solar system is much more difficult than anything like Mars or Earth, as ferocious wind storms make direct measurements impossible.

The first measurement of Uranus rotation was from the Voyager 2 probe, which took the closest approach on January 24, 1986. Researchers at the time determined that the planet’s magnetic field was 59 degrees from the north of the sky, but the axis of rotation was offset by 98 degrees.

These extreme offsets mean that Uranus effectively “lying down” compared to Earth, while the magnetic pole follows a larger circle as the planet rotates. Researchers at the time found that they completed a full rotation every 17 hours by measuring both the magnetic field and the radio emissions from the aurora.

now, Laurent Ramie The Paris Observatory in France and his colleagues measured it 28 seconds longer. More importantly, their measurements are 1000 times more accurate, reducing the margin of error per second.

Researchers looked at images of Uranus’ ultraviolet aurora taken by the Hubble Space Telescope between 2011 and 2022, and tracked the long-term evolution of the planet’s magnetic poles and circled the axis of rotation.

The error in previous measurements meant that it became impossible to accurately determine the location of Uranus after more than a few years, but the new measurements should be effective for decades. This means that it may depend on calculating mission-critical objectives, such as the probes may orbit and enter the planet’s atmosphere.

Tim Bedding The University of Sydney in Australia calls the team’s measurement techniques “very smart,” but points out that the new period of the day on Uranus doesn’t differ much, and is within the scope of old calculation errors. “That hasn’t changed much,” Bedding says. “Now, the more convenient it is, the more accurate it becomes.”

The Mystery of the Universe: Cheshire, England

Spend a weekend with some of the brightest minds of science. Explore the mystery of the universe in an exciting program that includes an excursion to see the iconic Lovell telescope.

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  • Hubble Space Telescope

Source: www.newscientist.com

Recent studies uncover the mechanisms by which Deinococcus bacteria can survive high levels of radiation

called radiation-resistant bacteria Deinococcus radiodurans It can withstand radiation doses thousands of times higher than what would kill a human. The secret behind this resistance is the existence of a collection of simple metabolites that combine with manganese to form a powerful antioxidant. Now, Northwestern University professor Brian Hoffman and his colleagues have discovered how this antioxidant works.

Deinococcus radiodurans. Image credit: USU/Michael Daly.

First discovered in 1956, Deinococcus radiodurans It is one of the most radiation-resistant organisms known.

It was isolated in an experiment aimed at determining whether high doses of gamma rays could be used to sterilize canned food.

In a new study, Professor Hoffman and co-authors characterized a synthetic designer antioxidant called MDP. Deinococcus radiodurans'Resilience.

They show that the components of MDP, manganese ions, phosphates, and small peptides, form a ternary complex that is a much more powerful protector from radiation damage than when manganese is combined with other individual components alone. I discovered that.

This discovery could ultimately lead to new synthetic antioxidants specifically tailored to human needs.

Applications include protecting astronauts from intense space radiation during deep space missions, preparing for radiation emergencies, and producing radiation-inactivated vaccines.

“This ternary complex is MDP's excellent shield against the effects of radiation,” said Professor Hoffman.

“It has long been known that manganese ions and phosphates together make a powerful antioxidant, but now we discover and understand the 'magical' potency brought about by the addition of a third ingredient. That's a breakthrough.”

“This study provided the key to understanding why this combination is such a powerful and promising radioprotector.”

In a previous study, researchers found that: Deinococcus radiodurans It can withstand 25,000 Grays (or units of X-rays and gamma rays).

But in a 2022 study, Professor Hoffmann and his team found that this bacterium, when dried and frozen, can withstand 140,000 Gy of radiation, 28,000 times the dose that would kill humans. did.

Therefore, if there are dormant frozen microbes buried on Mars, they may have survived the onslaught of galactic cosmic radiation and solar protons to this day.

In an effort to understand radioresistance in microorganisms, researchers investigated a designer decapeptide called DP1.

When combined with phosphate and manganese, DP1 forms the free radical scavenger MDP, which protects cells and proteins from radiation damage.

Professor Michael Daly, from Uniformed Services University, said: “This new understanding of MDP could lead to the development of even more powerful manganese-based antioxidants with applications in areas such as medicine, industry, defense and space exploration. Yes,” he said.

of result will appear in Proceedings of the National Academy of Sciences.

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Hao Yang others. 2024. A ternary complex of Mn2+, synthetic decapeptide DP1 (DEHGTAVMLK), and orthophosphate is an excellent antioxidant. PNAS 121 (51): e2417389121;doi: 10.1073/pnas.2417389121

Source: www.sci.news

Elon Musk Issues Warning About Starlink Dominance in Brazilian Amazon: “I Can’t Survive Without It”

The helicopter descended into a remote part of the Amazon rainforest, where Brazil’s special forces leaped off and dove into the waters teeming with caimans.

Their mission was to uncover a massive steel structure concealed in the forests along the Boia River in Brazil. An illegal mining dredger was caught in the act of excavating the riverbed for gold.

In the crackdown, authorities found mercury bottles, gold, and a drill bit on board. They also discovered a high-tech Starlink satellite internet receiver, linking the criminal network.

Starlink antennas have become ubiquitous in the Amazon, providing internet connectivity to remote areas where it was once unimaginable.

Brazilian special forces said they had seized a number of Starlink antennas from criminals this year. Photo: Joan Raet/The Guardian

Starlink’s expansion in Brazil has transformed connectivity in remote areas, but it has raised concerns about data privacy and national security.

Brazilian authorities worry about Musk’s influence over Starlink and his erratic behavior, which could jeopardize the country’s reliance on the technology.

The global reliance on Starlink, led by Musk, has sparked debates about the potential risks of a single company dominating the satellite internet market.

A Starlink device discovered by Ibama during an illegal mining operation in a remote area of the Amazon. Photo: AP

Countries like Ukraine have shown the strategic importance of Starlink for national defense against potential threats. However, concerns about over-reliance on Musk’s company have surfaced.

Starlink’s near-monopoly in providing satellite internet services has raised questions about the geopolitical implications of Musk’s control over critical infrastructure.

As the competition in the satellite internet market intensifies, the Musk factor could sway customers’ choices, influencing the future landscape of global connectivity.

Calls for diversifying satellite internet providers and reducing dependence on a single entity like Starlink have gained traction amid growing concerns about data security and political influence.

Source: www.theguardian.com

Can tardigrades survive on Mars?

Tardigrades These eight-legged marvels of survival are tiny aquatic invertebrates, also known as tardigrades. UV rays, The vacuum of space,and, Shot by a gunThe scientists 1400 species of tardigrades The creatures, which are collected from freshwater and marine habitats around the world, are seemingly indestructible and “The toughest animals on earth“But are they strong enough to survive on Mars?

Space agencies around the world are currently Sending humans to MarsBut life on Mars comes with its own environmental challenges: Researchers have shown that tardigrades can survive the radiation, extreme temperatures, dehydration and lack of oxygen that characterize the Red Planet. Studying Martian soil I realized it contained toxic salts. PerchloratePerchlorates dissolve rapidly in solution to form salt solutions or brineIt inhibits the cells' ability to retain moisture and produces reactive chemicals, such as hydrogen peroxide, which can damage cells. Oxidative stressScientists have found perchlorate concentrations in Martian soil as high as 0.6 percent, roughly 1,000 times higher than the highest concentrations found in Earth's desert soils.

Scientists have previously found that some soil bacteria can survive perchlorate using special enzymes that fight it and protect cells from oxidative stress. Unfortunately, animals lack these enzymes. Other researchers have found that tardigrades Paramacrobiotus experimentalis Can survive Short-term exposure Animals living on the Martian surface would be exposed to perchlorates for up to 24 hours, but animals living on the Martian surface would have to contend with these toxins indefinitely.

A team of Polish researchers recently tested whether tardigrades could perform this task. They Pam.Experimental The tardigrades were exposed to high concentrations of perchlorate, similar to those found in Martian soil, for eight weeks to see how long they would survive. The researchers reasoned that because this species of tardigrade can tolerate short-term exposure to perchlorate, it may be able to survive for longer periods of time.

The researchers: Pam.Experimental Tardigrades were collected from moss in Madagascar and fed a diet of earthworms and plankton. For each experiment, 24 newly hatched tardigrades were transferred to solutions containing 0.10%, 0.15%, 0.20%, or 0.25% magnesium perchlorate. As a control, another 24 were transferred to a solution without perchlorate. The tardigrades were kept in these solutions for 56 days in the dark, at 18 °C (approximately 64 °F) and 40% relative humidity. The solutions were changed every 7 days, and dead tardigrades were removed.

At the end of the experiment, the researchers Phase contrast microscopeThis type of microscope makes use of the fact that light waves change height and direction when they interact with an object. amplitudeand location, or stepThe human eye can see amplitude changes in brightness and color intensity, but not phase changes. Phase contrast microscopes convert invisible phase changes into visible brightness changes, allowing scientists to see fine details in transparent specimens like tardigrades.

The team counted live and dead tardigrades under a phase-contrast microscope and found that 83% survived on 0.10% magnesium perchlorate, compared with 87% in the control group. They also found that about 58% of the tardigrades survived on 0.15% perchlorate, 29% on 0.20% perchlorate, and 20% on 0.25% perchlorate. The team interpreted this trend as meaning that although more than 0.10% perchlorate is toxic to most tardigrades, some individuals can survive at about half the perchlorate concentration found on Mars.

The researchers also measured the body length of the surviving tardigrades, which were about two-thirds as long as those raised without perchlorate. The researchers suggested that tardigrades grow slower in the presence of perchlorate because the salt directly inhibits the tardigrades' growth or stops them from feeding.

These scientists demonstrated that tardigrades can survive Mars-like perchlorate levels for eight weeks, but did not reveal how they did this. They suggested that tardigrades must use a special technique to withstand the toxic perchlorate. Dry hibernation For example, when faced with high salinity or other extreme conditions. Damage suppressor proteins It protects them from radiation and helps them survive.

The team recommended that future researchers investigate whether tardigrades can survive and thrive when simultaneously exposed to perchlorate and other harsh conditions present on Mars. They also suggested that scientists study the biochemical pathways involved in tardigrades' perchlorate resistance to see if these pathways can be genetically engineered to confer perchlorate resistance to other animals that colonize Mars. One day, future humans may stroll under the Martian sky wearing tardigrade-reinforced skin.


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Source: sciworthy.com

Scientists: Humans likely couldn’t survive solely on earthworms


Earthworm meal?

The phrase “dining on earthworms” intrigues people in a variety of ways (whether or not they are intrigued in the first place). For historians, it can spark debates like this: Political rallies That happened in the German city of Worms in 1521. To nutritionists, the phrase can describe the work of scientists considering whether today's roughly 8 billion humans could all survive, if necessary, on a diet primarily of earthworms.

Henry Miller, James Mulhall, Lou Aino Pfau, Rachel Palm, and David Denkenberger, whom Feedback considers an all-star team in the earthworm nutrition community, recently devoured a mountain of data. After the meal, intellectually speaking, they said:Could harvesting earthworms significantly reduce global hunger in the event of a major disaster?” Published in the journal biomass.

The five researchers analyzed four techniques for efficiently capturing earthworms: digging and sorting, spraying with anthelmintics, making worm noises, and electric shocks.

They asked the “canned” (worm) question: Given the constraints of “scalability, climate-related collection barriers, and pre-consumption processing requirements,” could earthworms collected in these ways feed all of humanity? Their answer, in a word, is “no.”

Their 48-word response reads: “The authors are not aware of any studies on the human health effects of consuming diets high in harvested earthworms. However, in the authors' opinion, there is reasonable evidence that such diets may be harmful and therefore should not be recommended unless starvation is the alternative.”

Earthworm Meal

Miller, Mulhall, Pfau, Palm and Denkenberger are the latest pioneers in a long line of scientists who have come together to study earthworms' feeding habits.

Many others have focused on the feeding habits of the insects themselves.

Charles Darwin achieved some fame through his 1881 book, Formation of vegetable mold by the action of earthwormsNearly a century later, Christian Forchard and Peter Jummers wroteEarthworm diet: a study of the feeding guild of polychaetes” took up 92 pages. Annual Review of Oceanography and Marine Biology.

Forchard and Jumaz include a conversation-ending sentence that's worth memorizing and reciting if you want to impress at a party: “Alciopids are holoplanktonic animals with a muscular, eversable pharynx.”

Other scientists have studied what happens when insects are eaten, particularly by non-humans.

In 2002, Mary Silcox and Mark Teaford examined the teeth of several habitual earthworm eaters. They summarized their observations: Journal of Mammalogy,title”Insect diet: analysis of microwear on mole teeth” “.

“We measured microwear from the shear surfaces of mandibular molars. Parascallops Brewery (a hairy-tailed mole) Scapanus orarius “We compared the genes of (coast moles) with those of other small mammals, including tenrecs, hedgehogs, three species of primates and two species of bats.”

Some of the wear patterns on the mole's teeth “can plausibly be explained by interactions between the inner and outer teeth of the earthworm and the soil,” the researchers wrote.

Silcox and Teaford's mole teeth study may take on new importance if people on Earth choose to live a diet based primarily on earthworms, despite Miller and others' warnings.

Feedback has been received on the news regarding height requirements for certain courses at Vietnam National University’s School of Business Administration (HSB).

Deutsche Welle On July 2nd, the school announced that “this year's admission requirements are 1.58m or above for girls and 1.65m or above for boys,” because “the school aims to develop future leaders and excellent administrators” and “height is a determining factor, especially when it comes to leadership and self-confidence.”

The news report said that following public outcry, “HSB adjusted its admissions criteria” so that “the rule now applies to only one course – management and security.”

Are there schools or other institutions in the science, medical, or technology fields that have strict height requirements for students or employees? If so, please send us a document in Feedback with the subject line “Big/Small Careers.” Some job requirements reasonably specify that applicants must be physically able to use certain job-related equipment. Please do not send such requirements. We are seeking examples in Feedback where numbers, not needs, are prioritized.

Toilet Humor

Inspired by Feedback's collection of abandoned organisation slogans, Ken Taylor has been writing down slogans about abandoned things.

“I live in a very rural area. [the] UK – Cumbria. There are many isolated plots of land that are not connected to the sewer network and so rely on septic tanks, which need to be emptied regularly. I saw one such tanker truck carrying out its duties. The slogan on the side read “Move yesterday’s meal”. Nothing more to add…”

Marc Abrahams is the founder of the Ig Nobel Prize ceremony and co-founder of the journal Annals of Improbable Research. He previously worked on unusual uses of computers. His website is Impossible.

Do you have a story for feedback?

You can submit articles for Feedback by emailing feedback@newscientist.com. Please include your home address. This week's and past Feedback can be found on our website.


Source: www.newscientist.com

The World’s bravest lion manages to survive a history-making swim through waters infested with crocodiles

Imagine swimming at night in a river filled with crocodiles and hippos. Sounds terrifying, right? Well, two lions in Uganda did just that earlier this year, and for the first time, Scientists captured this daring act on film. Click here to watch the footage.

Using a drone-mounted, high-resolution thermal imaging camera, Researchers from Griffith University’s Centre for Planetary Health and Food Security, guided by Dr. Alexander Bratskovsky, captured the scene of two lions crossing Uganda’s Kazinga Channel in the middle of the night.


A remarkable lion named Jacob, who has faced numerous challenges, including losing his leg in a poaching incident, was one of the lions in the video captured by the researchers. Jacob was described as “the most tenacious lion in Africa.”

Jacob lost his leg in a metal trap during a poaching attempt. – Image credit: Alex Blaczkowski

Despite the risks of encountering crocodiles and hippos, Jacob and his brother Tib swam over a kilometer, displaying incredible resilience. The motivation behind this risky journey was likely the pursuit of finding a mate in the female-dominated system of Queen Elizabeth National Park.

The brothers' first attempt at crossing is followed by a creature. – Image credit: Alex Braczkowski

While the river had a bridge connecting the two sides, the lions chose to swim due to human presence and past negative encounters. Understanding the behaviors of lions in such environments is crucial for their conservation.


About our experts

Alexander Bratskovsky is leading long-term research on African lions and other predators in Uganda’s national parks. Learn more about his work here. The study on Jacob and Tib’s swim, titled “Long-distance swims by African lions in Uganda,” was published in Ecology and Evolution.

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Source: www.sciencefocus.com

A bumblebee can survive underwater for a week while sleeping.

Bumblebees may be more resilient than previously thought

Aaron Bastin/Alamy

A lab error has revealed that hibernating bumblebees can survive for at least seven days even when completely submerged in water. This ability suggests that beleaguered insects are more resilient than previously thought.

Sabrina Rondeau I came across this discovery by chance while researching eastern bumblebees (St. impatiens) in a laboratory at the University of Guelph, Canada. One week, she was checking on the hibernating queen bees kept in a hibernation chamber, a tube filled with soil in the refrigerator, when moisture overflowed into the tube and four queens were submerged in the water. I noticed that I was sinking. “I was a little surprised,” she says. “I was sure the queens were dead.”

To everyone's surprise, after draining the water, the bees woke up unharmed. Rondeau had a hunch that undiscovered abilities were at work.

She systematically drowned 21 queens over seven days, and 17 of them, or 81%, survived the flood. “This is a very high survival rate, not much different than before. [hibernation survival] When there’s no water,” Rondeau says. This achievement is probably due to the fact that dormant bees reduce their metabolic rate. This means that bees require very little oxygen, which can be met by air stored within their bodies.

“Wow, the fact that you can submerge a land animal in water for a week and find that it's still alive is really amazing,” he says. Lars Chitka at Queen Mary University of London.

Male bees and worker bees die before the winter, but the queen bee endures the cold for up to eight months by hibernating, waking up in the spring to begin building a new nest. The number of queens that survive is directly related to future population growth.

These bees hibernate underground, so extreme weather can destroy their safe haven. “It's a pinch point in their life cycle,” he says Nigel Lane, Dr. Rondeau's supervisor at the University of Guelph, Canada. This is a problem because about a third of all bumblebee species are already in decline. Finding that they are physically adapted to survive potential flooding is “really, really good news,” he says.

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Source: www.newscientist.com

The Amazing Way Insects Survive Raindrops: A Stunning Slow-motion Video

Although water striders are small insects, they have an amazing ability to withstand the impact of raindrops that are tens of times heavier than themselves. Slow-motion video of being crushed by water reveals tricks to avoid being crushed by water, including how to ride a water jet, shoot into the air and somersault before landing. There is.

As their name suggests, water striders can be found walking along the surface of ponds, lakes, and rivers around the world. They have long legs covered in microscopic hairs that trap air and help the insect float in water.

“One day I saw them skating by the water and thought, ‘What do they do when it rains?'” andrew dickerson at the University of Tennessee. The weight of a raindrop is more than 40 times that of an adult water strider. “How do they survive? Submerged or thrown into the air?” he added.

To investigate, Dickerson and his colleagues placed several water striders in a glass aquarium filled with water, applied droplets of water, and recorded the creatures’ reactions on slow-motion video.

The researchers noticed that when raindrops hit insects on the water’s surface, the insects initially remained unharmed because of their low density. However, it was dragged into the resulting impact crater. The crater’s collapse then spewed out a stream of water that returned to the surface, taking the insects with it.

In a few cases, the researchers witnessed water striders jumping from the water jets before they returned to the surface. “It was so beautiful. You could see it do backflips out of that jet,” Dickerson says.

However, if the water strider cannot escape from the jet of water, it will be sucked back down. Luckily, their hairy, water-repellent feet allowed them to float and swim back to the surface.

“This is the equivalent of them surviving when we get hit by a car, and in some cases going through a very acrobatic journey in the process,” Dickerson said. .

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Source: www.newscientist.com

Scientists have made a breakthrough in understanding how tardigrades are able to survive in extreme conditions

Tardigrade observed using a fluorescence microscope.Some organs are highlighted with fluorescent markers

Smythers et al/PLoS ONE (CC-BY 4.0)

Tardigrades are known for their ability to withstand extreme environments, and we now know how they do this. Small molecular sensors inside cells can detect when harmful molecules called free radicals are produced in excess, causing a state of dormancy.

Tardigrades, also known as tardigrades, are eight-legged microscopic invertebrates found throughout the world. Under adverse conditions such as sub-zero temperatures and strong radiation, the creatures shrink into a dry ball called a tongue and enter a deep hibernation state.

“Tardigrades do not breed under extreme conditions, but they can overwinter.” Derrick Colling At Marshall University in West Virginia. “We wanted to understand how they could step in there.”

To study, Kolling and colleagues exposed tardigrades to high levels of hydrogen peroxide, sugar, salt, or temperatures of -80°C (-112°F) to induce Tun. As a result of these stresses, tardigrades produce harmful, highly reactive molecules called oxygen free radicals.

The free radicals then go on to react with other molecules, team members say. leslie hix At the University of North Carolina at Chapel Hill. Importantly, the research team discovered that free radicals oxidize an amino acid called cysteine, which is one of the building blocks of proteins in the body. These reactions change protein structure and function and signal the onset of quiescence.

In experiments where cysteine ​​oxidation was prevented, tardigrades were unable to enter the tun state. “Cysteine acts like a kind of regulatory sensor,” Hicks says. “This allows the tardigrade to sense its environment and respond to stress.”

When conditions improved, the researchers discovered that the cysteine ​​was no longer oxidized and instructed the tardigrades to wake up from the tongue.

“Whether this is a universally conserved protection mechanism and whether this is conserved across tardigrade species is a really important question,” Hicks says. Her answers, she says, could help us better understand the aging process and how to make long-term space travel a reality.

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Source: www.newscientist.com

How did Paranthropus, a peculiar, ape-like early hominin, manage to survive for so long?

P. Prairie/E. Daines/Science Photo Library

It’s not often that a respected professor embarks on an investigation into a scientific discovery by a 15-year-old, but in 1938 Robert Bloom made an exception. The British-born paleontologist was keenly aware that South Africa in the 1930s was gaining a reputation for extremely primitive-looking hominin fossils. So when he heard that elementary school student Gerd Terblanche had discovered a fragment of a human skull in a cave there, he immediately tracked him down. Bloom’s visit to the boy’s school was successful. The boy later recalled that he was walking around with children. “Probably the world’s four most precious teeth are in his pants pocket.”.

Within a few months, Bloom completed his analysis of the fossil. He determined that they were different from anything previously discovered; He gave ancient humans a new name. paranthropus.

However, although he was convinced that the remains were valuable, paranthropus He never became famous. Perhaps it was because it was a misfit. It resembled one of our small-brained ancestors, but existed on Earth long after other ape-like hominids were replaced by large-brained hominins. Even among paleoanthropologists, paranthropus They are depicted as a “forgotten” human race.

It probably won’t last very long. Spurred by the discovery of more fossils, researchers are finally starting to re-evaluate this addition to the evolutionary tree – and their research suggests it was one of the strangest. ing. paranthropus They may have been skilled tool makers, but they also may have grazed like cows and communicated with low calls like elephants. The question now is whether this research will bring us any closer to understanding how the last apemen survived in a world dominated by…

Source: www.newscientist.com