Immediately after my 54th birthday, I received the package. The enclosed instructions said the next time I empty my intestines, I should shave a little of the stool, shave it into a small sample bottle, seal it in a prepaid envelope and drop it in a post. I did the act and a few weeks later I was invited to the hospital. My sample contained blood. Colonoscopy was ordered to rule out colorectal cancer.
Thankfully, I don’t have colorectal cancer. Colonoscopy of 54 is not a classic start to middle age. However, over the next few years, this particular rite of passage may begin to occur much earlier. The proportion of this cancer among people in my age group has been declining thanks to screening programs like this, but talking about under 50 years is much more troubling.
Early onset colorectal cancer (EOCRC) is now the circumstance, as is known in people under the age of 50, due to its virtually unprecedented nature of the 20th century. 10% of all new cases worldwide. That number is expected to more than double by 2030, and by then EOCRC is expected to be the most common form of fatal cancer among Americans aged 20-49.
The reasons are uncertain, but ambitious new projects explore potential causes. The idea is that EORC may also be a more clear and aggressive form of illness. Meanwhile, as routine screening expanded to younger groups – in January, the UK reduced the screening age to 50 – and the new, less invasive test…
Flowers and other plants need to pollinate insects to spread and reproduce. Their bright colours and intense smells attract bumblebees that pollinate them and play an important role in their survival. Without pollination, most fruits, vegetables, flowers and plants would not grow and diversify. Bumblebees eat nectar from flower to flower and collect them to store nutrient-rich pollen. In the process, their abdomen are covered in pollen. Pollen spreads from male flowers to female flowers as they fly between them. However, as global temperatures have risen in recent years, many scientists have noticed that bumblebees struggle to find colorful flowers and plants to pollinate.
This concern allowed a team of German scientists to take a closer look at how excessive heat affects bumblebees. They chose two types of Bumblebee to study: Bombus PascuorumAlso known as Carder Bumblebee Bombus Terrestris LinnaeusAlso known as bufftail bumblebee. These two bee species are common in Germany and most other parts of Europe, making them ideal options for research. Known as the ocean west coast climate, the region is a mild, comfortable summer and cool winter with plenty of rain.
Scientists suggested that heat waves due to climate change could affect how carder and bufftailed bumblebees survive during mild summers. In their study, the researchers exposed bees of both species to four different heat treatments and three different foods designed to replicate the scent of bees in the wild.
Scientists kept the bees in a comfortable, simulated environment a week before treatment. They then removed the individual bees and placed them in environments with different temperatures and humidity. Their goal was to simulate irregular weather phenomena such as drought and extreme heat and observe the bees' ability to find the scent of different flowers.
For each test, the researchers placed individual bees in long glass tubes to observe them. They performed their first treatment at 90% humidity and 104°F (40°C) to make the air very wet and hot. They performed a second treatment under the same humidity and temperature conditions, but added sugar syrup. They again administered a third treatment under the same conditions, but added a 24-hour rest period between heat and access to the sugar syrup. They had their fourth and final treatment at the same temperature, but only 15% humidity.
Scientists then applied the floral scent to Okimen, geraniol and nonnal on special absorbent paper and introduced it to each bee. They used a technique called to observe the electrical activity of bee antennas in response to odors Electrounnography. They explained that this process helps track bumblebee behavior after heat treatment.
Scientists have found that all heat treatments affect how bee antennae responded to the scent of three flowers. Specifically, we found that bufftailed bumblebees' sensory responses to flower scents reduced by up to 29%, while bufftailed bumblebees had a 42% to 81% reduction in their scent detection skills. Of all treatments, they found that the fourth treatment with low humidity had the greatest effect on honeybee sensation.
Scientists have concluded that research like theirs is useful when it is necessary to survive, taking into account the bees' experiences in the natural environment. With this in mind for global pollinators facing climate change, scientists have recommended that future researchers prioritize studying the effects of heat stress on cellular changes in bee antennas.
When it comes to sensitivity, the question of which generation is the most sensitive depends on who you ask. American Psychologist Dr. Jean Twenghe has conducted research comparing different cohorts and suggested that “millennials” (those born between 1981 and 1996) exhibit traits such as neurotic narcissism and anxiety more than previous generations. They tend to have unrealistically high expectations and struggle with criticism.
However, other studies have not always supported these findings. Research on nearly 500,000 American high school students between 1976 and 2006 found minimal differences in psychological characteristics across generations, including egoism and sensitivity to social status, which may indicate hypersensitivity.
Contrarily, some studies suggest that older generations may actually be more sensitive. A study from 2019 that analyzed hundreds of people born between 1923 and 1969 showed that those born earlier in the century exhibited greater signs of hypersensitivity.
Another study from 2024 focused on changes in narcissistic traits, including hypersensitivity, over the lifespan and across generations. It revealed that narcissism tends to decrease with age consistently across generations.
Overall, these studies suggest that hypersensitivity tends to decrease with age, with age being a more significant factor than the generation one belongs to. Some experts, like psychologist Professor Cote Rudolph, argue that the concept of individual generations like “Boomers” and “Gen X-ers” is arbitrary, and age and life experiences have a more significant impact.
This article addresses the question of which generation is the most sensitive, as asked by Madison Halladay from Jersey.
To submit a question, please email Questions@sciencefocus.com or reach out on our Facebook, Twitter, or Instagram page (remember to include your name and location).
For more fascinating science content, visit our Ultimate Fun Facts page.
SpaceX is set to launch the Starship Megarocket on its upcoming test flight on Monday, approximately six weeks after the top stage of the vehicle exploded over the Atlantic during its final test.
Following the incident on January 16th, SpaceX lost contact with Starship about eight minutes after the flight, leading to subsequent explosions that scattered debris and small fragments near Turks and Caicos. Local authorities confirmed no injuries occurred.
The US Federal Aviation Administration initiated an investigation after the accident and grounded the rocket during the probe. On Friday, the agency announced clearance for the spaceship to resume flights, although the investigation remains ongoing.
SpaceX’s own investigation identified the “attic” section as the source of the leak that caused propellant to escape, triggering a fire and shutting down most of the spacecraft’s engines in a controlled sequence.
Strips of the recent SpaceX launch dotted the sky on January 16th. Courtesy Todd Martin
Data transmission ceased over eight minutes into the test flight, resulting in the vehicle disintegrating three minutes later.
Subsequent to the incident, SpaceX implemented several hardware and operational modifications to Starship’s upper stage, without disclosing specific details of the upgrades.
The eighth test flight for Starship, originally planned for Friday, encountered brief delays without explanation.
The FAA green-lit the flight, amidst broader fiscal and personnel reductions targeting various federal agencies during the Trump administration’s tenure. Reuters reported that the Government Efficiency Bureau, spearheaded by SpaceX’s Elon Musk, engaged with the FAA, with SpaceX engineers assisting as specialized government personnel.
The existence of Doge personnel within the FAA’s commercial spaceflight division overseeing private companies like SpaceX remains undocumented, prompting some lawmakers and critics, including Senator Ed Markey, to voice reservations regarding potential conflicts of interest.
The planned Monday launch aims to deploy four mock Starlink satellites mid-flight, marking the first payload release by the vehicle.
Upon separation from the second stage, Starship’s first Hull King stage is slated to return to the launch pad, where SpaceX intends to “catch” it using extensive mechanical equipment at the rocket’s launch tower. This stage was successfully retrieved during the January flight, signaling partial testing success for the company.
The catch maneuver is pivotal in SpaceX’s ambition to establish Starship as a fully reusable rocket system.
If the launch proceeds as planned, the upper stage will soar for about an hour on Monday before splashing down in the Indian Ocean off Western Australia.
Standing at 400 feet tall, the spacecraft constitutes the most potent rocket ever developed, comprising a super-heavy first-stage booster and an upper-stage spaceship.
Envisioned to play a crucial role in NASA’s moon missions, SpaceX has been selected by the agency to ferry astronauts during the Artemis III mission scheduled for 2027. Musk hinted at potential application for future Mars missions utilizing the spacecraft.
The personally built spacecraft is a few hours away from landing on the moon, a feat only achieved by one other company in spaceflight history.
The robot lander, known as Blue Ghost, has been orbiting the moon for approximately two weeks, gearing up for a daring descent. Firefly Aerospace, a Texas-based company, has developed a spacecraft with the goal of landing on the moon around 3:34 am early Sunday.
If all goes as planned, Blue Ghost will become the second privately owned vehicle to land on the moon. In February 2024, another Texas-based company, Intuitive Machines, made history with the Odysseus Lander successfully touching down near the moon’s Antarctic region.
Firefly’s Blue Ghost Lunar Lander took a selfie on Earth. Firefly Air Space
Firefly Aerospace’s future landing attempts are set for 2025 as part of a robotic mission to the moon. Recently, Intuitive Machines launched its second lunar landing vehicle into space. Japanese company, The Ispace, was also sent towards the moon on the same rocket as Blue Ghost, taking a longer route but expected to arrive around late May or early June.
Blue Ghost is targeting a landing site in a 350-mile-wide basin near the moon’s surface, always facing the Earth. This area is believed to be the location of an ancient asteroid impact, according to NASA.
During a recent orbit around the moon, the Lander captured footage showing distant craters on the lunar surface.
Firefly’s Blue Ghost Lander filmed footage of the other side of the Moon on February 24th. Firefly Air Space
Blue Ghost is scheduled to begin its descent around 2 am on Sunday. NASA will broadcast live streams starting at 2:20 am ET on NASA TV.
Equipped with 10 NASA science instruments, the spacecraft will conduct various studies, including surveying the moon’s interior up to 700 miles deep, capturing Earth-focused x-ray images, analyzing space weather interactions with Earth’s magnetic field, and capturing detailed images during the descent for future missions.
The instruments onboard the Lander will examine lunar soil samples, study lunar dust adherence to different surfaces, and use lasers to measure Earth-Moon distance accurately.
Blue Ghost is expected to gather data on the moon for about two weeks.
While in Lunar Orbit, Firefly’s Blue Ghost Lander captured images of the moon’s Antarctic. Firefly Air Space
This mission is part of NASA’s Commercial Lunar Payload Services initiative, a public-private partnership between NASA and US companies to deliver scientific experiments, technology, and cargo to the moon. It is a critical component of NASA’s Artemis program, designed to eventually return humans to the moon.
NASA allocated approximately $101.5 million to Firefly Aerospace to carry out the Blue Ghost Mission.
NASA states that the scientific experiments and technology demonstrations on these missions will enhance our understanding of the moon’s Antarctic region, where future human crews are expected to land.
The design of the flow headset resembles a prop from a futuristic movie, featuring a sleek curve and two large circular pads that utilize electrodes to deliver small currents to the brain.
Claimed to aid in treating depression, the company behind the headsets – Flow Neuroscience, priced at £400 (around $520) – boasts a 77% improvement rate in symptoms within just three weeks.
Initially skeptical, I am intrigued by the potential of wearable devices to enhance our well-being. However, I have encountered many grand claims in the past that failed to materialize.
Nevertheless, Flow’s compelling evidence could sway my opinion. Numerous studies have demonstrated the positive impact of the devices on individuals with depression, funded by Flow Neuroscience but conducted by external researchers and mental health professionals.
The most recent research, led by a team from East London University and involving 174 patients in the UK and US, revealed that 56% of those using the flow headset were symptom-free after 10 weeks, prompting consultant psychiatrist Alex O’Neill Kerr to emphasize the significance of these results.
“We’re talking about remission,” O’Neill Kerr remarked. “Symptom-free.”
O’Neill Kerr, who participated in a previous trial with the Northamptonshire Healthcare NHS Foundation Trust and prescribes the headset in his practice, shared anecdotes of how the device had transformed the lives of some patients.
Read more:
“Upon initial use, I was astounded,” O’Neill Kerr noted. “Patients are regaining control of their lives. I recently spoke with an individual using a flow device, and it completely turned their life around.”
While not everyone benefits from using the headset, and not all research yields promising outcomes, recent studies have underscored the effectiveness of transcranial direct current stimulation (TDCS) in treating depression. By sending mild currents to the brain, TDCS stimulates less active areas associated with depression, potentially revolutionizing treatment for individuals who are unresponsive to traditional interventions.
In the trial, more than half of the flow headset users had symptoms – Credit: Justinpadget
O’Neill Kerr highlighted the potential of TDCS to address the underlying communication issues in the brain that lead to depression, offering hope to individuals who do not respond to standard treatments.
With milder side effects compared to traditional antidepressants, such as tingling sensations or headaches near the electrodes, TDCS presents a safer and non-addictive alternative that could be used in conjunction with conventional therapies.
While other TDCS headsets like Platowork and brain driver exist, Flow stands out as the sole device endorsed by the NHS due to its proven efficacy. Ongoing research aims to explore TDCS applications beyond mental health, potentially offering relief for conditions like anxiety, post-traumatic stress disorder, and tinnitus.
Envisioning a future where TDCS becomes a standard treatment option, O’Neill Kerr emphasized the profound impact it could have on patients. “It’s restoring your brain to its natural state,” he concluded.
About our experts
Professor Alex O’Neill Kerr, an expert in treating OCD, PTSD, depression, bipolar disorder, anxiety, transcranial magnetic stimulation, and addiction therapy, has contributed to publications like bjpsych open, Open Journal of Depression, and Journal of Affective Disorder Reports.
Humans have been striving to measure the world we live in for a long time. Our measurement systems and units help us comprehend ourselves and our environment, whether we are dealing with basic physics theories or not.
When we measure something, we compare it to a standard benchmark to ensure accuracy and stability. The current benchmark for time is the atomic clock, which relies on the precise energy levels of electrons in an atom.
Atomic clocks, however, have limitations due to environmental factors affecting the energy levels within the atom. This has led to the exploration of nuclear clocks, especially using the rare thorium-229 isotope.
Thorium-229 has unique characteristics that make it an ideal candidate for creating nuclear clocks. Its nucleus has closely spaced energy levels that can provide more stable measurements of frequency and time compared to atomic clocks.
The recent advancements in using thorium-229 for nuclear clocks have opened up new possibilities for accurate time measurements and potential breakthroughs in fundamental physics theories.
Why go to the nuclear?
Nuclear clocks offer greater stability and accuracy compared to atomic clocks due to the small size of the nucleus and reduced influence from external factors. By utilizing thorium-229 and its unique energy levels, nuclear clocks can revolutionize time measurements.
These advancements in time measurement are not only essential for navigation and communication systems but also play a crucial role in testing fundamental physics theories such as relativity.
Accurate clocks can also help in exploring dark matter and understanding its interactions with normal matter. Nuclear clocks provide a more precise benchmark for detecting the effects of dark matter on time measurements.
What’s next?
The next step after harnessing thorium-229 for nuclear clocks is to develop a functional and reliable clock system. This involves stabilizing a laser to the frequency corresponding to nuclear energy levels and constructing a robust clock design.
While there are challenges in developing nuclear clocks, the potential for unprecedented accuracy in time measurement is promising. These advancements require in-depth calculations and understanding of fundamental forces like quantum chromodynamics (QCD).
Overall, the progress in nuclear clocks signifies a new era in precise timekeeping and could lead to significant advancements in our understanding of the universe and fundamental physics theories.
“Brain corruption” was named the term Oxford’s year 2024. This is defined as the “degradation of a person’s mental or intellectual state” that arises from seeing “trivial” content online, such as a Tiktok video.
It’s a term that is often joked about, but what If there is a grain of truth? This is the seemingly scary implications of a new study published by a large team of brain scientists based at Tianjin Division University in China.
What did this study find?
They scanned the brains of over 100 undergraduates and completed a survey on their habits of watching short online videos. The survey included statements such as “My life will be empty without a short video” and “Not able to watch a short video will be as painful as losing a friend,” indicating how much they agreed.
Interestingly, researchers found that those who felt most obsessed with short videos had significant differences in brain structure. These participants had more gray matter in the orbitofrontal cortex (OFC). This is an area near the front of the brain that is involved in decision-making and emotional regulation. Similarly, they had more gray matter in the cerebellum – the small cauliflower-shaped structures behind the brain play a role in movement and emotions.
The team concluded that this is bad news, as for Tiktok enthusiasts, having an oversized OFC could be a sign that it is described as “an increased sensitivity to rewards and stimuli associated with short video content.” They speculated that watching too many Tiktok videos could have led to this nerve distension.
Similarly, they suggested that enhanced cerebellum could help the brain process short video content more efficiently – perhaps the result of frequent rampages. This can create a reinforcement cycle. In this cycle, watching more videos strengthens these brain pathways and habits become even more ingrained.
Over 23 million videos are uploaded to Tiktok every day – Photo Credit: Getty
But that’s not all. The team also performed a second brain scan to track participants’ brain activity while participants were resting with their eyes closed.
They found a greater synchronization of activity within multiple regions of the brain. These include the dorsal prefrontal cortex (areas involved in self-control), the posterior cingulate cortex (areas involved in thinking about oneself), the thalamus (a type of relay station for brain signals), and the cerebellum.
The researchers suggested that these functional brain differences could reflect a variety of issues among addiction participants. The issues include the tendency to overly social comparisons while having trouble leaving the video and watching them.
They also asked participants to fill out a survey on “promising temperament.” This is a factor measured by agreeing to statements such as “I strive to reach other people’s outstanding results.”
Interestingly, scientists have found that many links between video addiction and brain differences are also linked to a higher level of envy. This suggests that feeling of envy can make someone more likely to watch a short video. And over time, this habit can lead to potentially harmful changes in the brain.
Does Tiktok cause brain decay?
If you are an avid consumer of fun online videos, or a related parent, the idea that seeing habits can reconstruct brain structures is no surprise.
However, it is important to consider this study in a broader historical context in which new technologies and media have long been causing exaggerated neurological claims. It is also important to understand the deep limitations of research.
It’s been nearly 20 years Atlantic Ocean The magazine ran a cover function that asked, “Is Google making us stupid?” And, in a nutshell, the answer that was asserted was “Yes!” Author Nicholas Kerr lamented that he was once a “scuba diver in the sea of words,” but now, thanks to Google, he zipped “along the surface like a jet ski man.”
Countless brain imaging studies of questionable quality were also published in the same era. Many aim to demonstrate the disaster effect of the World Wide Web on our vulnerable minds.
A few years later, Professor Susan Greenfield, a neuroscientist professor of Baronness, launched a media campaign claiming that “mind change” (the impact of the internet and video games on the brain) is just as serious threat to humanity as climate change.
She even wrote dystopian novels about the dehumanizing effects of the internet, but received mixed reviews (One critic (I questioned whether this was one of the worst science fiction books ever written).
Scientists still don’t know how much Tiktok affects the brains of young people, but research is still underway. – Photo credit: Getty
Almost 20 years later, we’re fine. At least I don’t think our brains have been transformed into mash. But of course, these previous horrors were before the appearance of Tiktok. Perhaps there is something uniquely damaging about the types of short, scrollable, meaningless content available today.
I asked Professor Peter Etchellsif this is plausible, expert on the psychological impact of digital technology at Bathspa University. “As far as I know, there is no good science to support the idea that short videos are either tangible or uniquely bad in terms of their impact on the brain,” he says.
read more:
Is short video brain research a good science? Not so, but the evidence suggests that it is not.
What is wrong with this research?
Let’s take a look at some of the limitations of the research. If the goal was to prove that seeing tiktok is harmful to the brain, a more effective approach would be to scan participants’ brains and then consume different amounts of harmful content.
However, this study is completely cross-sectional, meaning that only a single snapshot was captured in time. This was not a pre- and post-comparison of causes and effects.
Or, as Etchell says: “[From this study] I can’t say anything about whether watching a short video will cause brain changes, or whether certain types of brain structures precede certain types of video consumption.
“This research doesn’t really add anything that will help us understand how digital technology affects us.”
Even if we accept the speculative leap of researchers that Tiktok’s videos may have caused the brain changes they observed, there are still some issues to consider.
First, the researchers searched the entire brain for differences that correlated with the scores on the video addiction scale. This approach is a common problem in brain imaging studies as it increases the risk of finding false positives. In other words, the more comparisons you make, the more likely you will stumble over random differences that seem important but are actually just a coincidence.
Second, even if we accept that the observed brain differences are real and caused by seeing Tiktok, interpreting them involves a lot of speculation. Researchers enveloped an increase in brain synchronization (known as regional homogeneity (Reho). However, Rejo itself is not inherently a good or bad thing. In fact, other studies have associated with an increase in Reho in certain brain regions. positive Results such as results observed during meditation training.
Perhaps the biggest flaw in the study relies on questionable survey-based measures of short video addiction that lacks strong scientific validity.
As Etchells put it, “Short video addiction is essentially an invented term, not a formal diagnostic clinical disorder.”
Taken together, these issues suggest that we should not be overly concerned that Tiktok fundamentally shapes the brains of young people in harmful ways.
That said, the excessive amount of time spent watching frivolous videos can still be a problem for some. However, it is more productive to focus on developing healthy media habits rather than worrying about brain changes or addiction.
“In many cases, when research like this hits the news, it’s a good opportunity to pause and reflect on whether we’re happy with the use of the technology,” says Etchells.
“If there’s concerns there, it’s worth thinking about what you can do to eliminate your frustration, knowing that you’ll benefit a lot from these technologies.”
About our expert, Professor Pete Etchell
Pete is a professor of psychology at Bath Spa University. His research focuses on how playing video games and using social media affects our mood and behavior. He is the author of I got lost in a good game We are currently investigating whether game mechanics can promote gambling behavior in other parts of our lives.
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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Entomologists describe a new species of the Tiger swallow (genus genus) Papirio) From eastern North America.
Papilio Sorstian: (a) male, holotype and (b) female, arotype. Scale bar – 10 mm. Image credit: Derotler et al. , doi: 10.3897/zookeys.1228.142202.
Papirio It is a large genus of swallowtail butterflies within the family Papillonidae.
The only representative of the Papillionini family, the genus contains about 200 scientifically recognized species.
Newly identified members of the genus Papilio Sorstianbelongs to North America Papilio Glaucus Species group.
” Papilio Glaucus The group is a model research system for insect evolutionary biology. ” Dr. B. Christian Schmidt Arknides, nematodes and colleagues wrote on paper from the Canadian National Insect Collection.
“Recognition and boundaries” Papilio Glaucus and Papilio canadensis Three decades of study in speciation, host plant adaptation, hybridization, and molecular evolution have been conducted as a pair of classical sibling species. ”
“Recently, we have discovered a third species. Papilio appalachiansisprovided unprecedented insights into speciation by hybridization. ”
” Papilio Glaucus The group is primarily part of the clades of the subgenos of the New World clades on a large scale Pterourussometimes recognized as a distinct genus,” they added.
“The various within the group demonstrate adaptation to a variety of thermal niches that are warmly characterized (Papilio Glaucus), intermediate (Papilio appalachiansis), and cool (Papilio canadensis) Climate region; all have a wide larval host plant diet and are not limited by its distribution. ”
Papilio Sorstian It is closely related to these three species, but unlike all of the series of characters.
“The most important differences are evident in developmental biology and biology,” the researchers wrote.
“Papilio Sorstian Compared to May for all other species, it is unique during long delays in appearance after adult escape, starting from late June to early July to late June to early July. ”
Papilio Sorstian'The geographical range is Papilio Glaucus The southern end of Papilio canadensis.
“Core Range Papilio Sorstian It includes eastern and south-central Ontario, northern and central New York, and adjacent Vermont, New Hampshire and Pennsylvania.2The scientist wrote in his paper.
“In New York Papilio Sorstian He lives in most of the states except the Southeast and New York City metropolitan areas. ”
“In Canada, Papilio Sorstian It extends westward from Montreal, Quebec, to the Bruce Peninsula in Ontario and south to the Niagara region. ”
“The western limits seem to be on the east coast of Lake Huron. We haven’t seen any verifiable specimens of the west there.”
“Current evidence is consistent with the possibility Papilio Sorstian There is a recombinant evolutionary origin of Papilio appalachiansisThey added.
“However, the evolutionary origin of this kind, Papilio Glaucus-complex, I still can’t answer. ”
“Recognizing and defining the taxonomic identity of this unique evolutionary lineage is our hope to provide a staging point on the fertile grounds for future research.”
CJ Derotler et al. 2025. A mysterious new species of the tiger swallow (Capidae, Papillonidae) in eastern North America. Zookeys 1228:69-97; doi:10.3897/zookeys.1228.142202
Taste hydrogels are administered to the mouth via small tubes
Shryn Chen
Electronic tongues that can replicate flavors like cake and fish soup can help you replicate food in virtual reality, but still can’t simulate anything else that affects taste, such as smell.
Yizhen Jia Ohio State University and his colleagues developed a system called e-Taste. This can solve a way to sample food and partially reproduce its flavor in someone’s mouth.
This includes using chemicals that correspond to five basic flavors. Sodium chloride, salty water, sour citric acid, glucose for sweetness, magnesium chloride for bitterness, umami glutamic acid. “These five flavors already explain the very large spectrum of food we have every day,” says Jia.
The system uses sensors to detect the levels of these chemicals in the food, convert them into digital measurements, pumping these values into a pump, and pushing a small amount of hydrogel containing different flavors into a small tube under a person’s tongue.
First, the researchers tested a system with a single flavor and asked how well the device reproduced sour on a 5-point scale, comparing it to a real sample of sour taste. They gave the same number for 70% of the time for the true sour thing that was reproduced.
The team then tested whether the system was able to replicate more complex flavors such as lemonade, cake, fried eggs, fish soup, coffee, etc., and asked a group of six if they could distinguish them, and felt they could have over 80% of the time.
However, I say it’s not very useful to focus on such flavors alone. Alan Chalmers Because other sensations are also involved in our taste at Warwick University in the UK. “Next time you have strawberries, close your nose and eyes. Strawberries are very sour, but are perceived as sweet because of their aroma and red colour. So if you send them just sour on your device, you’ll never know that they’re actually from strawberries.”
“This kind of electron can extract the amount of sweetness [and] It’s sour, but it’s not a taste for a human tongue,” he says.
If you’re like Khloe Kardashian, who recently turned 40, you may have considered testing your biological age to see if you feel younger than your actual age. But while these tests can tell you a lot about your body’s aging, they often overlook the aging of your brain. Researchers have now developed a new method to determine how quickly your brain is aging, which could help in predicting and preventing dementia. Learn more here.
Unlike your chronological age, which is based on the number of years since you were born, your biological age is determined by how well your body functions and how your cells age. This new method uses MRI scans and artificial intelligence to estimate the biological age of your brain, providing valuable insights for brain health tracking in research labs and clinics.
Traditional methods of measuring biological age, such as DNA methylation, do not work well for the brain due to the blood-brain barrier, which prevents blood cells from crossing into the brain. The new non-invasive method developed at the University of Southern California combines MRI scans and AI to accurately assess brain aging.
Using AI to analyze MRI brain scans, researchers can now predict how quickly the brain is aging and identify areas of the brain that are aging faster. This new model, known as a 3D Convolutional Neural Network, has shown promising results in predicting cognitive decline and Alzheimer’s disease risk based on brain aging rates.
Researchers believe that this innovative approach can revolutionize the field of brain health and provide valuable insights into the impact of genetics, environment, and lifestyle on brain aging. By accurately estimating the risk of Alzheimer’s disease, this method could potentially lead to the development of new prevention strategies and treatments.
Overall, this new method offers a powerful tool for tracking brain aging and predicting cognitive decline, bringing us closer to a future where personalized brain health assessments can help prevent and treat neurodegenerative diseases.
Giant panda (Ailuropoda Melanoleuca) It belongs to the Carnivora order, but they eat mostly bamboo and their unique dietary adaptability has always been the focus of their research. Recent studies have shown that plant-derived microRNAs (miRNAs) can release nanosized vesicles (40-100 nm) released by various cell types into the extracellular space and deliver to animal organisms via exosomes that exert cross-regulatory effects on gene expression. Chinese scientists collected blood samples from three groups of pandas (boy, adult female, and adult male) to investigate the role of plant-derived miRNAs in dietary adaptation of giant pandas and extracted them from blood for small RNA analysis. Their results show that plant-derived miRNAs enter the bloodstream of giant pandas, exert cross-kingdom regulatory effects, and may play an important role in the dietary adaptation process.
Giant Panda Cube Shaoriuu and his mother Baiyun at the San Diego Zoo.
“We have shown that plant-derived miRNAs are present in the blood of giant pandas,” says Dr. Feng Li, a researcher at West Normal University of China.
“Our research has proven that bamboo, which is used as food for giant pandas, affects changes in the feeding habits of giant pandas.”
In this study, the researchers took blood samples from seven giant pandas, including three adult women, three adult men and one boy woman.
In these samples, we found 57 miRNAs that are likely to be derived from bamboo.
“Bamboo miRNAs can enter the body of giant pandas through diet, absorbed by the intestines, enter the blood circulation, and regulate the RNAs of giant pandas as they transfer information and play a role in regulating gene expression in giant pandas,” Dr. Lee said.
These plant-derived miRNAs can regulate a variety of physiological processes, including growth and development, biological rhythms, behavior, and immune responses.
“Bamboo miRNAs are also involved in regulating the smell, taste and dopamine pathways of giant pandas, and all of these are related to feeding habits,” Dr. Lee said.
“When pandas eat more bamboo as they grow, certain miRNAs accumulate, regulating gene expression and aiding in their adaptation to bamboo’s flavor.”
“These miRNAs also affect the sense of the smell of giant pandas, and may allow you to choose the freshest and most nutritious bamboo plants.”
“Therefore, bamboo miRNAs may promote the adaptation of giant pandas from carnivorous to plant-based diets.”
The authors also found that pandas of different ages and genders have different miRNA compositions in their blood.
“Only miRNAs that can play a particular role in regulating gene expression can remain in the body, and those that do not play a role are expelled,” Dr. Lee said.
“For example, some miRNAs regulate reproductive processes and can only be found in the blood of pandas of a particular gender or age.”
“The fact that miRNAs can send signals from plants to animals could open the door to researching the treatment and prevention of diseases in animals.”
“Plant miRNAs also participate in regulating the animal’s immune system, increasing the disease resistance of animals.”
Similarly, studying miRNA-induced changes in plants can also help assess and improve the safety of plant-based foods in animals and humans.
However, more research is needed to draw decisive conclusions about the potential of common miRNAs and their impact on giant pandas.
“The giant pandas are an invaluable national treasure in our country, and blood samples are not easily obtained,” concluded Dr. Lee.
“If possible, we hope to collect blood samples of young pandas who have not yet eaten bamboo for research and perhaps get more surprising results.”
result Published in the journal Veterinary Science Frontier.
____
Herrington et al. 2025. Cross-Kingdom Regulation of Gene Expression in Giant Pandas via Plant-derived MiRNAs. front. Veterinarian. SCI 12; doi:10.3389/fvets.2025.1509698
Impressions of the artists of Spherex Space Telescope
NASA/JPL-Caltech
The latest addition to NASA's Space Telescope Fleet will be launched this weekend and will soon scan the entire sky in near-infrared wavelength ranges, collecting a wealth of data on more than 450 million galaxies.
The history of the universe, the reionization epoch, and the spectrophotometer for Ice Explorer (Spherex) will be released on March 2nd on a SpaceX Falcon 9 rocket from the Vandenberg Space Force Base in California at 10:09 pm local time.
It carries a camera with filters that divide the light that enters like a prism and beams different parts of the spectrum into 102 separate color sensors. As the telescope pans around the sky, it slowly tightens the full image pixels pixel by pixel. This strategy allows you to use a relatively small and simple camera to do what you need to have a heavy, expensive suite of sensors, even without moving parts.
“If you slowly scan the sky slowly by moving the telescope, after a sufficient amount of time, every pixel in the sky is observed over a very wide wavelength range, giving you a coarse spectrum of every bit of the sky that has never been done before.” Richard Ellis University College London. “It's a very small space telescope, but it has some very unique features.”
Ellis says this rich dataset allows for accidental discoveries. “There's a high chance that you'll find something unexpected,” he says.
Infrared data is outside the human vision range, allowing scientists to determine the distance of objects and learn how to form galaxies. It can also be used to determine the chemical composition of an object, potentially revealing the presence of water and other important components.
The interesting stuff thrown by Spherex can be investigated in a more focused way using NASA's existing space telescope fleet.
Christopher Conseris At the University of Manchester in the UK, Spherex says it doesn't match the JWST solution or create similarly adoring images, but it says it will become a “maintainer” for scientific discovery.
“JWST can point to a part of the sky and take some big photos [and reveal] Something completely new. And Spherex really can't do the same thing,” he says. “It's going to be an analysis that takes years, and it's going to cover the sky many times.”
Spherex orbits the Earth 14.5 times a day away from the Earth's surface, completing 11,000 orbits over a two-year lifespan. Three cone-shaped shields protect the instrument from the Earth's radiant heat and interference from the sun.
The same rocket will be released on the polarimeter, another NASA mission to unify the Corona and Heliosphere Fair (punch), which will study the solar winds of the sun.
Hero Ideas Dengue fever boy Mosquitoes would have appeared in 2020 during the peak of the COVID-19 pandemic, when a dengue outbreak exploded in my hometown of Buenos Aires. Dengue fever spreads all the way Aedes aegypti mosquito. This insect thrives in tropical and subtropical climates and is commonly found in many warm and humid regions of Northern Argentina.
However, in recent decades, global warming has spread to traditionally cold, yet mild climates, such as Buenos Aires and Patagonia. One of my best friends had dengue fever in 2020, but as all media attention was focused on Covid-19, the city’s public hospitals had limited testing and there was no way to get proper diagnosis or treatment. Furthermore, there were no effective vaccines or medications for dengue at the time.
During this unsettling time for my friends and people with dengue in Argentina, US company Modern announced its vaccine against Covid-19 just a few days after the genetic sequence of SARS-COV-2 was issued. This has made me think about the terrible corporate bias in scientific research, as mosquito-borne diseases (dengue, zika, chikungunya, yellow fever, etc.) have killed hundreds of thousands of people over the centuries. In fact, mosquitoes are considered the deadliest animals for humans, according to historians. Timothy Wine Guardkilled more people than anything else in history.
However, these diseases affect people in low-income countries, so there was not enough investment in vaccines or treatments. Meanwhile, biotech companies only needed a few months to develop, patent and sell products that tackle Covid-19.
So, this idea came to me to tell the story of the global Southern pandemic through the lens of the mosquito itself.
Partly inspired by the artists I admire (Franz Kafka, David Cronenberg, Hidosi Hino), I leaned a bit ironically on Latin America’s most commercially popular genre, and I was convinced that the imaginary subtitles of my story should be “the self-capacity of a mosquito.” At the same time, one of the themes of my writing was inhumanity, and I was interested in the challenge of making insects the protagonist of a novel (a genre historically designed to tell the human age, psychology, and stories). How can we achieve this by mimicking and empathy with the human experience, especially insects that are as annoying as mosquitoes?
I became a mosquito and had to adopt that perspective. I have given the famous Frobertian motto.”Madame Bobbery, C’est Moi” And I changed it to my own: Le Moustite, c’est moi.
Ursula K. Le Gin once said The basic property of science fiction is to act as a carrier bag allowing for the transition of ideas from fiction to other scientific and technical discourses. This way, this genre becomes a mutational transition ( Dengue fever boy Between literature and non-literary knowledge.
I’ve always been very grateful for this idea. Because nothing in my work as a writer would please me more than studying topics I had never noticed before.
For this book, I consulted dozens of papers and manuals on entomology, and I became a “mosquito” overnight. It was important to know the details of mosquito anatomy, explain it, and understand how its body works and feels. Therefore, although the main character is inspired by my friend, a man, I discovered that the mosquito that tells the disease is a female.
The female perspective was also guided to investigating how non-mammalian oviparous animals are involved in maternal care. Eggs designed for films by HR Giger alien drawn and classified by the naturalist Ernst Heckel, in his illustrated treatise, Georges Bataille’s The story of the eyes It also fueled this oval obsession.
In this novel, I tried to tell a story about climate change from a perspective that restored human lives more than humans. I hope readers will resonate with my hero.
Dengue fever boy Michel Nieva, translated Published by Serpent’s Tail from the Spanish of Rahul Bery the latest choice for the New Scientist Book Club. Sign up here and read with us
Michel Nieva's dengue boy is placed on a drowned future earth
Arami Stock Photo
Does that mean he's dead?
Dengue spreading the strange white surface under the Antarctic sun, and within a second, she saw everything flash. When you believe that a boy, a girl, a destroyed blank will die, how about life to look back at the space for a few moments? You might think of that dear mother. Do you lament your father who has never known or perhaps remembered a humorous or traumatic anecdote involving a classmate? Honestly, not many other things happened during her short time on Earth. However (the mind works in a mysterious and unpredictable way, especially the mind of a mutant mosquito), the destroyed dengue fever didn't think about any of these people, rather the story of her mother reading her at bedtime; Snow White and the Seven Dwarfs. She recalled the opening from her heart:
“Once upon a time, on a frozen, windy winter night, the Queen lived. This Queen watched snow fall as she knits by the window. From the window, the snowflakes slowly and rhythmically fell in an unpredictable pattern, like feathers from endless pillows. She was staring in wonder at the fall of snow, so she accidentally stabbed one of her fingers with a needle. Three drops of blood fell into the snow. And the Queen thought to herself. If I could have a daughter as white as snow, as blood red, as winter!”
This opening is always a volatile dengue boy (as he was at the time). In particular, he didn't understand half of the words: what the hell was it? winterwhat was it coldwhat was it snowand why did they spark such attraction?
A precious daughter snowjust as beautiful winter . . .
The mystery of those words, whose meanings had always escaped him, sparked even greater doubt.
It was impossible to know, and there was no empirical way to experience their effects in this future, when cold, winter and snow was gone from the earth (at least not for a miserable boy from Victoria). Naturally, his mother, who spent all her miserable lives at Victorica, didn't really help. All she knew (or as strong as she believes she knows) was that the snow was soft and beautiful, and that the beautiful child's skin had the same colour and pleasant texture, unlike the dengue children, who had a greenish yellow colour with furry skin. For this reason, the dengue boy, like some kind of qabalic rabbis, was convinced that he could access mystical meanings. cold, winter and snowhe will open up the secret of that mysterious sacred breast and how to get the love of his mother.
Because nothing had hoped that insects would turn white like snow and be as beautiful as winter.
The desire to access the mysterious material hidden in these words grabbed the poor insects and he cooperated with all the dictionaries and encyclopedias that he could find in search of answers. He read the definitions over and over again:
winter. noun. obs. The extinction season of the earth's age that occurred between autumn and spring has also become extinct.
Example: “Winter was the coldest time of the year.”
cold. noun. obs. Physical sensations produced by cold temperatures, the characteristics of ancient winters.
Example: “It was cold during the winter, especially if there was snow.”
snow. noun. Precipitation in the form of small white ice crystals formed directly from air water vapor at temperatures below 32°F. This occurs in terrestrial winters and occurs by artificial means on other planets or Earth.
Example: “There was a lot of snow in the winter!”
The poor boy reads these definitions, rereads them, then reads them again, but he has no understanding of his great disappointment. Is that because (as his classmates always argued) he was half wit? winter, cold, snow. Just words. words! Worse, it was a word that had to be explained using other words, and its definition was even more vague and inaccurate.
Wint-er, cold, sn-ow.
The herbular pictograph, which the boy tasted the phonemes through phonemes, was under the illusion that the flesh that once lay beneath the vivid skin had not evaporated before his eyes. But, although removed from the meaning that once brought them to life, what remained was a hollow corpse of meaningless sounds.
Wint-er, cold, sn-ow.
It was an atmospheric phenomenon that so many humans and other species suffered and endured for thousands of years, and now it was merely a planetary mystery, a speculative prose written by fossils, a biblical water and soil sky, a geological stamp!
The only season Pampas and the Antarctic Caribbean knew was summer, burnt, relentless, homogeneous. So when dengue became neutralised, her body still numbed from the poison, believing that she would die, and that she saw her own blood (to be precise, she saw blood that she indiscriminately sucked from Victoria's children and office workers), yes. Boy), a confused F story Snow White and the Seven Dwarfs.
And certainly, the memory she believed that her last body was worthy of was that her poisoned body actually landed on the ice rink of Great Winter Cruise, the flagship of the cruise company that traveled along the Antarctic Caribbean coast, recreating the cold season, and now disappearing from Earth, snow, glacier, and iceberg. Operated using AIS cutting-edge technology, these luxurious cruise ships allow tourists to experience the unique winter joys, including one of the biggest attractions, the largest ice rink on the planet.
And it was exactly where dengue died, ruining the fun of tourists. Imagine the scene: On this impressive slab of ice, 100 feet long and 55 feet wide, crowned the terrace of a 21 feet cruise ship, a massive crowd flocked to try a unique experience, perhaps for the first time, as large visitors were not present. Not only was it an opportunity to slide the unmistakably elegant ice skating strides on frozen sheets, but it was to do so at zero temperatures as the atmosphere in which the rink was installed recreated the harsh winter feel of old New York, lurking long under the waves. Plus, it was Christmas, the busiest and most eagerly awaited season in international tourism. And as the carols rang, the enchanting tourists dressed in fierce courts, moving like swans sliding down the Terra Incognita. It mimics the long-standing things at Rockefeller Center in Old New York, and there are also many leagues now under the sea.
Naturally, the sculptor hired on the cruise ship was sharp enough to replace the flames on Prometheus' right hand with a huge block of pure ice, and the Titans had taken from the deep by the planetary age, allowing these wealthy tourists to recover to the geologic era (as long as the cruise continues) which was permanently eclipsed eclocene to Earth. In fact, this was a cruise company slogan.Great Winter Cruise with 12,000 years of history in one place”, as humans promised to completely recreate the topography of a planet that lost winter, as humans knew it was born and died. Thus, “hibernation” (as the company called the advertising cruise experience) proceeded upwards from the floor, narrating winter history in ascending order. It began with a bottom deck that recreated the Pleistocene end in a giant fridge with robotic mammoths and mastodons, including a family-friendly game in which prehistoric mammals had to be set on fire with sticks and stones before they were attacked. The higher levels provided a variety of experiences from the old winter. Historic included the ability to invade Scandinavian cities on Viking ships, kill, sack, rape, or cross the Andes with General San Martin's white horse. Winter precipitation such as snow, hail, and sleet. There was also a huge igloo with outdoor cinemas, casinos, spas, carousels, cocktail bars and sushi and barbecue restaurants. Ancient frozen delights of ice, snow and cold were the real treasures of the gods stolen by Prometheus himself for the exclusive enjoyment of visitors to the cruise. The skaters slid across the rink in an atmosphere of pure joy, and were saved by Christmas carols, people clashing and dancing with each other cheerfully, shining and laughing at each other with the shared bliss. A true, unforgettable celebration recorded forever in the tourist retinus, a real dream, if mosquitoes had not landed violently on ice links and ruined everything.
This extract has been reproduced With permission to write a novel Dengue fever boy Michel Nieva (translated by Rahul Berry) is now appearing in the snake tail. Available from the North American version Astra House. This novel is the latest choice for the New Scientist Book Club. Sign up here and read with us
Exciting news! There are new dancing animals in town, and they go by the name of Happy Feet. Recent research has uncovered the adorable jig that baby loggerhead turtles perform when they approach their favorite feeding spot.
A study captured the lively turtle movements, including tilting their bodies vertically, lifting their heads, opening their mouths, moving their front flippers in a paddling motion, and sometimes even spinning in place.
Researchers noted a distinct difference in the “turtle dance” behavior between feeding and non-feeding areas.
However, the study did not explore how these animals fare on the dance floor. The mystery of how turtles locate their favorite feeding spots during long migrations and lifetimes has intrigued scientists for quite some time.
New research suggests that turtles use Earth’s magnetic fields as a guide to identify the unique magnetic characteristics of their preferred feeding spots and celebrate with a dance when they find them.
In the experiment, researchers recreated two magnetic field signatures found worldwide, corresponding to locations near the Gulf of Mexico and New Hampshire, USA. Turtles were trained to associate each magnetic field with a feeding site.
The results showed that turtles exhibited more “turtle dance” behavior in designated feeding areas, indicating their ability to distinguish between the two magnetic fields.
“Sea turtles can sense both the strength and tilt of magnetic fields,” explained the lead researcher. “They not only detect these magnetic properties but also have a remarkable memory for them.”
This memory was evident as the turtles continued to recognize the designated feeding sites months after the initial experiment, even when not exposed to them. This demonstrates the turtles’ ability to navigate using magnetic cues and retain memories of specific locations.
Adult turtles have been observed returning to foraging sites after migrating for breeding, while baby loggerheads travel to coastal feeding grounds using ocean currents. Previous studies have shown their reliance on a “magnetic compass” for navigation, with the current research exploring their “magnetic map” capabilities.
The research team plans to delve deeper into these mechanisms in future studies to uncover how turtles perceive and use magnetic information for navigation.
There have been numerous ice age animals recovered from the world’s permafrost, ranging from woolly rhinos and wolves to urus, brown bears, and bison. Despite some being slightly damaged, they are often found in excellent condition.
One remarkable discovery was in 2017 when scientists excavated the remains of a small cave lion named Sparta from a frozen bank on the Siberian River. Although its golden fur was muddy and matted, its skin, soft tissue, and organs were all preserved. With closed eyes, it appeared more like a sleeping animal than one that had been dead for 28,000 years.
Another notable find was a two-month-old horse that died 35,000 years ago and was uncovered in Siberia in 2018. Though some fur was missing, the animal was largely intact, with hooves, skin, tail, and nostril hair preserved.
Various well-preserved woolly mammoths have also been discovered, some with grass in their mouths, milk in their bellies, and even dung on their bellies. While videos show people cutting into frozen mammoth carcasses and finding meat that looks fresh, the appearance can be deceiving.
Many animals found from the Ice Age are well preserved on the outside, but on the inside is a different story – Credit: Grafissimo
While these ice age animals and their tissues may appear well-preserved superficially, zooming in reveals a different story. The lack of antifreeze agents when freezing live cells causes ice crystals to form, leading to cell bursting.
Although tissues and organs may seem intact, the cells that form them are not. The damage to these cells has occurred over the thousands of years since the last ice age ended. While these ancient animals may seem well-preserved on a larger scale, they are damaged at a microscopic level.
The most well-preserved ice age beasts are likely those with intact cells, which died closer to the end of the last ice age and have been frozen since. One such candidate is a 9,000-year-old bison discovered in the Russian Far East in 2022, which may have cells viable for cloning attempts.
However, cloning attempts on ice age animals have so far been unsuccessful due to DNA deterioration after death. Despite the optimism, the chances of successful cloning are slim. For now, appreciating these mummified artifacts as they are offers a fascinating glimpse into the ancient past.
This article is the answer to the question (asked by Ben Schofield).
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Observe the night sky tonight to witness a rare event known as the “Planet Parade,” where the planets in our solar system align in a row. This phenomenon involves Mars, Jupiter, Mercury, Venus, Saturn, Uranus, and Neptune appearing in a straight line for a unique celestial display. This rare occurrence will not happen again until 2040.
The best time to view this spectacular event is on the evening of Friday, February 28th, 2025, when all seven planets will be visible in the sky. Astrophysicists like David Armstrong emphasize the significance of this planetary alignment and the rarity of such an occurrence.
To best observe this phenomenon, head outdoors just after sunset to catch a glimpse of Mercury, Mars, Venus, Jupiter, and Saturn. For a more detailed view, consider using binoculars or a telescope to see the distinctive features of each planet. Find a dark, remote spot away from city lights for the optimal viewing experience.
Where should I look to see the planets?
Identifying the planets in the sky can be challenging, but each has its unique brightness and position. Look for Venus in the west, the brightest object after sunset, followed by Jupiter overhead. Keep an eye out for Mercury, the closest planet to the sun, as it remains low on the horizon. The planets’ loose alignment creates a visual path across the sky, making it easier to track their movements.
Why is this planetary parade happening?
The alignment of planets is a result of their orbits in the zodiac plane, creating the illusion of alignment from Earth’s perspective. While this alignment is purely visual and does not have a significant impact on Earth, it provides a fascinating celestial display for observers to enjoy.
Meet our experts
Dr. Sham Balaji: A researcher at King’s College London, specializing in cosmic particle physics and cosmology.
Matt Burley: An astronomer and reader at the University of Leicester’s Department of Physics and Astronomy.
David Armstrong: An associate professor at Warwick University focusing on planet detection and the Neptinia desert.
It's published today International Polar Bear Daynew research will answer questions by showing the first combination of satellite tracking colors and remote camera traps Polar bear (Ursus Maritimus)) Denning is notoriously difficult to study as polar bear moms create dens under the snow in remote areas.
Shooter et al. It reveals the first detailed view of polar bear cults coming out of their burrows. Image credits: Jon Aars/Norwegian Polar Institute.
Turnip survival supports species survival, and denning is the most vulnerable period of life. Less than 50% of Cubs can become adults.
As industry expands in the Arctic, this study highlights the importance of uninterrupted Denning regions to protect polar bear populations.
“Polar bear mothers have increased difficulty replicating due to climate-based changes and could face additional challenges associated with expanding human footprints in the Arctic,” said Dr. Louise Archer, a researcher at the University of Toronto Scarborough University.
“We are excited to introduce new tools to monitor bears during this vulnerable period and gain insight into action across the Arctic.
“Every den we monitor has its own story, and every data point adds to this critical understanding of time and supports a more effective conservation strategy.”
In their study, the authors monitored the behavior of the polar bears in Den Emans held in Svalbad, Norway.
Female polar bears were equipped with GPS satellite collars recording their location, temperature and activity.
Researchers used these collar data to find burrows and traveled through the mountains of Svalbad to deploy time-lapse camera traps at 13 densites over six years.
They found that camera traps provide fine-scale insight into the behavior of the maternal Den, and that satellite collars are accurate and useful for monitoring bears in more remote locations for longer periods of time.
The family appeared in Svalbarbad around March 9th and appeared to abandon the burrow earlier than previously recorded in this group, and further monitoring was needed to establish whether this was a continuing trend.
Changing the timing of denning can put a risk to the cubs' survival as they will less time to develop before they can proceed further towards the sea ice.
In some cases, the bears appeared from the burrow in less than a minute before returning inside, while other appearances lasted for several hours.
In terms of departing den forever, camera footage showed that polar bears remained near the burrow to stay on average for 12 days.
However, this ranged between 2-31 days and was very different among polar bear families.
Some moms switched dens – they were observed leaving their original dens and moving their families to new dens.
Cubs are heavily dependent on their mothers and rarely venture out in their dens alone. The Cubs were only seen in 5% without mothers. In Svalbad, they rely on their mothers for up to 2.5 years.
“This study gives us a total glimpse into one of the most vulnerable and important periods of polar bear life and provides insights that will help guide our collective conservation efforts.”
“Combining innovative technology and long-term research gives us a deeper understanding of the challenges faced by polar bear moms and cubs in the rapidly changing Arctic.”
“Conserving Denning's habitat is essential for population health, and this study provides invaluable insights that can help guide conservation management.”
“There were few studies that included observational data at polar bear burrow sites, and therefore this study contributes significantly to our knowledge of denning ecology,” said Dr. John Arles, a senior researcher at the Norwegian Polar Institute.
Furthermore, data from the satellite radio collar was available to all mothers, and observational data allowed us to communicate how recorded activity and temperature changes corresponded to behavior. ”
study It will be displayed in Journal of Wildlife Management.
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Louise C. Archer et al. Monitoring the phenology and behavior of polar bears during the emergence of den using cameras and satellite telemetry. Journal of Wildlife ManagementPublished online on February 26th, 2025. doi: 10.1002/jwmg.22725
The near-Earth asteroid called the 2024 YR4 has been closely monitored over the past few months as its chances of impacting Earth increased to about 3% in 2032. After the latest observations from the ESO's very large telescope (VLT), the probability of impact has decreased to about 0.001%.
This VLT image shows asteroid 2024 YR4 near Earth. Image credit: ESO/O. hainaut.
2024 yr4 On December 27, 2024, the Asteroid Terrestrial Impact of Río Hurtado was discovered by the Last Alert System (Atlas) station.
Between 40-90 m in diameter, the asteroid took a close approach to Earth at a distance of 828,800 km (515,000 miles) two days before its discovery.
The 2024 YR4 is currently moving, with the next close approach taking place on December 17th, 2028.
On December 22, 2032, the asteroid quickly rose to the top of the ESA risk list due to its size and potential impact. This is a catalogue of all the space rocks that can affect Earth.
“Uncertainty means that the orbit of an asteroid is like a flashlight beam. It becomes wide and wide and ambiguous in the distance.”
“As we observe more, the beam becomes sharper and narrower. The Earth was illuminated more by this beam. The probability of impact increased.”
The observations of the new VLT, along with data from other observatory data, were able to exclude the impact on Earth in 2032 by Dr. Hainaut and his colleagues, but were able to constrain sufficient orbits for all.
“The narrower beams are now far from Earth,” Dr. Heinout said.
The impact probability reported by the ESA's short-range object adjustment center is about 0.001%, and asteroids no longer place the ESA risk list above.
As the 2024 YR4 is far from Earth, it has become increasingly faint and difficult to observe it with all but the largest telescopes.
“The VLT contributes to the observation of this asteroid due to its mirror size and excellent sensitivity, and is an excellent darker sky at the Delusional Observatory of ESO in Chile, where the telescope is located,” the astronomer said.
“This would ideally help track faint objects such as the 2024 YR4 and other potentially dangerous asteroids.”
“Unfortunately, the same pristine, dark sky that allowed these important measurements is now under threat by Industrial Megaproject Inna by AES Andes, a subsidiary of US utility AES Corporation.”
“The project plans to cover areas similar to the size of small cities and be located at the nearest point, about 11 km from VLT.”
“Because of its size and proximity, INNA will have a devastating effect on the quality of Paranal's sky, particularly due to mild contamination from industrial facilities.”
“In bright sky, telescopes like VLT lose the ability to detect the weakest universe's targets.”
The physicist with Atlas collaboration We presented our first observations of VVZ production at Cern's large Hadron Collider. This is a rare combination of three giant vector bosons.
Three vector boson events recorded by Atlas are when one W-boson collapses into electrons and neutrinos, one collapses into moons and neutrinos, and two moons collapses into z boson. Muons are shown with a red line, electrons are shown with a green line, and a white line where “loss of energy” from Neutrino is destroyed. Image credits: Atlas/Cern.
As carriers of weak forces, W and Z bosons are central to standard models of particle physics.
Accurate measurements of multiboson production processes provide excellent testing of standard models and shed light on new physical phenomena.
“The production of three vector (V) bosons is a very rare process in LHC,” says Dr. Fabio Cerutti, Ph.D., Atlas Physics Coordinator.
“The measurement provides information about the interactions between multiple bosons linked to the symmetry underlying the standard model.”
“It is a powerful tool to uncover new physics phenomena, such as new particles that are too heavy to be produced directly in LHC.”
The Atlas team observed the generation of VVZ with statistical significance of 6.4 standard deviations, exceeding the five standard deviation thresholds needed to assert the observations.
This observation extends previous results from Atlas and CMS collaborations, including observations of VVV production by CMS and observations of WWW production by Atlas.
As some of the heaviest known particles, W and Z bosons can collapse in countless different ways.
In a new study, Atlas physicists focused on seven attenuation channels with the highest discovery potential.
These channels were further refined using a machine learning technique called Boosted Decision Trees, where the algorithms for each channel were trained to identify the desired signal.
By combining the attenuation channels, researchers were able to observe the production of VVZ and set limits on the contributions of new physical phenomena to the signal.
“The resulting limitations confirm the validity of the standard model and are consistent with previous results on the generation of three vector bosons,” they said.
“Analyzing the third run of LHC and the large dataset from future HLHCs will further improve the measurements of the generation of three vector bosons. We will deepen our understanding of these basic particles and our role in the universe.”
Could scientists use parasites in your brain to treat diseases? The concept of utilizing parasites as a medical tool may sound unconventional, but it offers hope for conditions like Parkinson’s and Alzheimer’s. Researchers believe that if parasites can transport drugs directly to the brain, it could aid in treating these ailments.
An international team of scientists is doing just that. They are utilizing single-cell parasites called Toxoplasma gondii, which causes the infection toxoplasmosis. These parasites naturally travel from the human intestine to the central nervous system and provide proteins to host cells. In their experiment, bioengineers manipulated the internal system of T. gondii cells to produce and release proteins outside the cell, creating a secretion system.
The team explained that delivering medications to the brain is challenging due to the blood-brain barriers that safeguard the brain from harmful substances. T. gondii has evolved the ability to overcome these barriers, which could be beneficial in this process. Initially, they tested whether T. gondii can cross the blood-brain barrier in mice and then in human brain cells, specifically neurons, before moving on to testing on intact mouse brains to potentially apply the findings to humans.
Their drug delivery system mediated by T. gondii consists of proteins created from at least two regions of different genes that are combined and translated into a single unit, known as a protein fusion. They incorporated a therapeutic drug with a T. gondii protein called takihorin to transport medicine to the brain.
Initially, scientists faced challenges in determining the appropriate dilution factor for the drug compound. They had to find a balance between allowing the proteins to pass through the blood-brain barrier while ensuring they were still therapeutically effective. Through trial and error, they found the correct dilution factor and successfully administered the treatment to the targeted brain area.
The next step involved delivering therapeutic proteins to brain cells through T. gondii. Researchers used lab-grown mouse brain cells and specific proteins that regulate the movement of molecules across the cell membrane, known as vesicle transport protein. They demonstrated that the engineered T. gondii successfully transported healing proteins to the brain cells of lab-grown mice.
The researchers then tested the treatment process on human brain cells cultivated outside of the body. They confirmed that the therapeutic proteins delivered by T. gondii could bind to the DNA of human brain cells. This binding altered gene expression in the laboratory-grown brain cells.
Finally, engineers demonstrated the success of this therapy on whole mouse brains. By ensuring that the therapeutic proteins could pass the blood-brain barrier in live mice, they then evaluated the brains post-euthanasia. Utilizing 3D imaging, they illuminated specific neural pathways and markers in the mouse brain, confirming that the engineered proteins effectively delivered therapeutic proteins to the brain.
The researchers concluded that their findings show progress in drug delivery via engineered parasites but emphasized the need for further research to determine the potential advantages and drawbacks of this method. With the success of this study, they proposed that utilizing engineered parasites for drug delivery could offer new treatment options for brain-related diseases.
Without human-induced climate change, the Earth could have been on track to enter another ice age within 11,000 years. This long-term prediction of the planet's “natural” climate is based on a new analysis of how orbital shapes and the tilt of their axis combine to change the amount of solar energy reaching Earth.
For millions of years, these orbital oscillations (known as the Milankovich cycle) entered and left the planet during the Ice Age about every 41,000 years. However, over the past 800,000 years, these ice ages, also known as ice age, have only occurred every 100,000 years. The term Ice Age, as it is currently, can be used to refer to whenever there is ice on Earth's poles, but generally refers to a wide range of ice Age periods.
The ambiguity of the record as the ice sheets were willingly retreated meant that it was not possible to explain how trajectory changes were involved in driving this long cycle.
If previous research attempted to link orbital changes to a specific period, such as onset of an ice age, Stephen Barker Cardiff University in England and his colleagues took a new tack. They came back fading during the “glacial age” where they saw the overall pattern of the ice age, also known as ice age. This allowed us to link changes in trajectories with changes in ice, despite the ambiguity of ice records over the past million years.
They discovered that these 100,000-year cycles appear to follow simple rules. For the last 900,000 years, following the most circular phase of the orbit, the planets also tilted towards the Sun, thus causing all interglacial periods after the Earth's axis wobbled at the farthest from the Sun.
This suggests that all three of these aspects of Earth's orbit (known as precession, oblique and eccentricity) are combined to create a 100,000-year glacial cycle, Barker says. “Since 900,000 years ago, this simple rule has predicted all of these major glacial end events, which says it's really very easy to predict,” he says.
Under that rule, the next ice age where you currently live is expected to begin approximately 66,000 years from the year, as there is no impact on greenhouse gas emissions. But that could only be started if there was an ice age before that,” says Barker.
The diagonal and gradual stages of precession that preceded the Holocene suggest that the glaciers are likely to be on track between 4300 and 11 and 100 years from now. We may now live in what would have been the beginning of this next ice age. “Of course, it's just a natural scenario,” says Barker.
More than 1.5 trillion tons of carbon dioxide have been released into the atmosphere as the Industrial Revolution is expected to cause sufficient warming to disrupt this long-term glacial cycle.
“The amount we've already put into the atmosphere is so big that it takes hundreds to thousands of years to pull it out through natural processes,” Barker says. However, he says more research is needed to define the planet's future natural climate in a more detailed way.
It states that this is consistent with previous modeling suggesting that anthropogenic emissions can prevent the onset of the next ice age, from dozens to hundreds of thousands of years. Andrei Ganopolsky At the Potsdam Climate Impact Research Institute in Germany.
But he says even at pre-industrial levels of CO2 in the atmosphere, it was high enough to delay the ice sheet advancement by 50,000 years. This is due to the unusually small orbital changes expected in thousands of years and the unpredictable way that Earth responds to those changes.
As we approach February, Skywatchers have a final opportunity to witness the “Planet Parade” lighting up the night sky.
The celestial event, where all seven planets in the solar system, apart from Earth, are visible most weeks, is set to provide the best viewing chances for Skywatchers worldwide on Friday. This is because mercury, which only recently appeared on the horizon, will be at its highest point above the horizon.
Starting from Friday, mercury and Saturn will become too dim and too low on the horizon for most observers.
If the conditions are right, it should be possible to spot five out of the seven planets with the naked eye with mercury and Saturn in mind. However, a telescope is necessary to view Uranus and Neptune.
Planetary parades occur when multiple planets are visible simultaneously and spread out in an arc across the sky. While not uncommon, it is rare for all seven planets to be visible at the same time. Four planets were visible before sunrise in August, but NASA states that five will not be visible again until October 2028.
To observe the planets in the sky this week, it is best to find locations on clear nights with minimal light pollution.
Saturn is visible near the horizon (it sets below the sky, making it harder to see during moonrise). Mercury has been far from the sun in recent weeks, making it easier to locate. After sunset, near Saturn, it can be seen low in the western sky.
Venus is also situated in the western part of the sky and is usually the easiest planet to spot due to its brightness.
Jupiter can be observed at dusk. NASA. Mars, meanwhile, is the last planet to set before sunrise.
Michael Shanahan, planetarium director at Liberty Science Center in New Jersey, suggests searching for mercury and Saturn with binoculars near the sunset point shortly after dusk.
As it gets darker, Jupiter, the brightest star in the sky, can be seen overhead. Towards the east, Mars on Earth remains quite bright,” he added.
Shanahan also mentioned that beyond Friday, individuals can witness what he described as “Planetal Ballet against the Starry Background.”
“Around March 10th, Venus will appear too low. Currently, Venus is a bright spot resembling an airplane,” he noted.
Planetary alignments occur due to the planets orbiting the Sun in a relatively flat, disc-like plane. They move along this metaphorical racetrack at their own pace. Mercury completes its orbit in 88 days, Venus takes 225 days, and Saturn takes over 29 years to orbit the Sun.
When multiple planets align on the same side of the metaphorical track, Jackie Faherty, an astronomer and senior research scientist at the American Museum of Natural History in New York City, explained to NBC News earlier this month.
The International Space Station may be a little too clean
geopix/alamy
A strategy to keep the spacecraft as clean and infertile as possible to ensure that astronauts do not get sick may be a mistake. Researchers studying the International Space Station (ISS) say our immune system may require stimulation from certain types of molecules and microorganisms to maintain good health.
“The general concept is to have as few microorganisms as possible, but the question is whether it's the best thing for long-term space travel.” Peter Drestein At the University of California, San Diego. “And that's related to places on earth, such as research. [stations]hospitals and submarines, can spend more than a few months. ”
One reason for sterilizing spacecraft is to avoid covering contaminated planets such as Mars with microorganisms from Earth, but the main concern is that infections that can easily be treated on our planets can become a major problem with spacecraft.
Dorrstein and his team analyzed over 700 surface swabs mounted on the ISS.
“The space station doesn't have many molecules and microorganisms,” he says. “It's at the extreme edge of human life.”
The team believes this lack of exposure to the usual wide range of molecules and microorganisms could be one of the reasons why there is a major change in the universe's immune system. On space stations, astronauts are often subject to rashes, abnormal allergies, fungal or bacterial infections, and activation of latent viruses such as Epstein Barr found in one of the samples.
“We don't fully understand that,” says Drestein. “But the way I see this is that you have to ping your immune system regularly.”
Researchers say they need to find ways to ensure that environments like space stations are “more diverse in molecules and microorganisms, but without introducing infectious pathogens.”
One way to do this is Subtilis Bacillus Instead of disinfectant, Drestein says. B. subtilis It is already widely used for antifungal activities.
Growing a variety of plants is also helpful. “We know from other studies that when people are exposed to more plant molecules, they tend to have a reduced connection to asthma and allergies,” Drestein says. He says these plant molecules are not entirely present in the space station.
Feedback is the latest science and technology news of new scientists, the sidelines of the latest science and technology news. You can email Feedback@newscientist.com to send items you believe readers can be fascinated by feedback.
The hypothesis is that when male masculinity is threatened, it is overcompensated as an “extreme demonstration of masculinity.” For example, when men were told they were feminine, they responded by expressing more support for the “dominant hierarchy” and said they wanted more personal strength. They also became more supportive of war and homophobia.
But the bit that caught Hobbes' attention is that they were interested in purchasing a sports utility vehicle (SUV) because it was so ridiculous.
Reading all this, I found that feedback stares into the universe, but the faces of famous people flashed in the past. It reminded me of singer James Blunt when he was interviewed on Jesse Ware's podcast. Table etiquette. He admitted that he had followed in college. A meat-only meal to prove his manliness and annoy his vegan friends– You'll just be diagnosed with scurvy.
We recall many examples of right-wing male men who confessed on social media that they did not believe in the existence of female orgasms.
It reminded me that Elon Musk and Mark Zuckerberg's trash cans were talking to each other during the proposed cage battle for a year. And we thought those sociologists might have the point.
Ready and not ready
We are all trying to adapt to the rise of artificial intelligence, but the next technological revolution is Quantum Computers. Thanks to issue 3530, regular readers will already know this. But what about all the poor souls who didn't pick it up?
What is being offered? Why teach leaders help to create “clear and comprehensive quantum response strategies for durable, competitive differentiation.” Quantum computing is promised to “simply solve meaningful problems and unlock business value in various fields.” Hype, stable at Microsoft.
As a result of this upcoming power of quantum computing, leaders need to “understand the organizational change needed to lead the quantum era through a structured approach to business transformation tailored to the organization's objectives.” They need to “run Quantum Application Roadmap” for businesses that “assess the impact of Quantum.” In other words, do some research, plan, and do it. You really can't put financial value on advice that combines quality and originality to that extent.
The problem, of course, is that we don't know if quantum computers will be useful or if they will be of any exact help. So, while companies may spend a lot of time preparing for a quantum future, we see that surprisingly different quantum futures actually occur.
In a very realistic sense, even if the company is quantum-enabled, it is not quantum-enabled. If there is a thought experiment that could explain such a situation.
How to leave the planet
Given the state of things mentioned above, feedback sometimes makes me wonder if we might depart Planet Earth for a new meadow. Certainly space travel plagues dangers like metstone strikes, intense radiation, and true heart-wrenching scales of interstellar distance.
However, on the other hand, the grass may have greenery. In the idol moment, we may be able to fantasize that the approaching asteroid 2024 YR4 is a disguised flying saucer and cover the lift into the Alpha Centauri.
So when we learn, we can imagine our surprise through sustainability consultant Niki Rus Unusual LinkedIn Recruitment Certainly.com. A company called Black Book Resourcing Ltd wanted it “Pioner Colonists – Mars Village Program.” Responsibilities include “establishing and maintaining a life support system,” “generating power and managing resources for long-term survival” (just a little of the understatement here), “working as a team under extreme conditions.”
A rather long list of “essential requirements” includes “peak physical and mental endurance” and “backgrounds for engineering, medicine, botany, geology, or survival skills.” Confusingly, this list requires both “completely isolated adaptability and resilience” and “strong teamwork and leadership skills.” Finally, you should have “Don't depend on the luxury of the earth, only grit and resolve.” “Previous Experiences in Extreme Environments” is optional.
Not everything is in a hurry: the listing has expired and we are not at all sure it is authentic. Moreover, given the frankly intense requirements, the feedback was surprised to see that the proposed salary was between £60,000 and £100,000 a year. However, the company deserves credit for listing the work as “permanent.” That will definitely be the case. Bonus points for the location. This is described simply as “remote”.
Have you talked about feedback?
You can send stories to feedback by email at feedback@newscientist.com. Please include your home address. This week and past feedback can be found on our website.
All of our solar system planets line up in the night sky once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is called a great planet alignment, or what is called a “planet parade.”
The eight planets in our solar system first formed from the same disc of debris around the sun, thus bringing the sun into orbit on roughly the same plane. The lines that line this plane appear along the zodiac when the sun crosses the daytime sky, as the sun crosses the daytime sky, appear all along the zodiac when the planets appear in the sky. The orbit is slightly tilted, so it’s not the perfect line of the planet, but it’s pretty close.
This is less obvious than during planetary alignment. Normally, only a few planets share the night sky, but the unusual alignment of all seven planets will be visible around a few nights, around February 28, depending on your location.
The best time to see is right after sunset, and you will have the opportunity to see all the planets arching in the sky, but all of them are near the horizon except Mars, Jupiter and Uranus. These three will continue to stroll all night, but by the time the sky is completely dark, Mercury and Saturn will sink below the horizon, and Neptune and Venus will soon follow.
The main thing that prevents such alignments from being invisible all the time is the difference in orbital periods between planets, except for the weather. Mercury closest to the Sun takes about 88 Earth days to complete its orbit, but Neptune, most of the distant planets, takes nearly 165 Earth years.
It is only possible to have a large alignment if the planets are all relatively far from the Sun, so they can be seen at night, so they are all in roughly the same half of the sky, so they can be seen at the same time. It’s a coincidence of an astonishing trajectory. Sometimes there are multiple large alignments per year, sometimes even if there are no more than one year, it can pass. A similar event is not scheduled to occur until 2040.
“It’s great to see the interest that Planet Parade is creating.” David Armstrong At the University of Warwick, UK. “It’s all great to be involved in astronomy, look up at the sky and evaluate the wonders of our solar system. I encourage anyone interested in going out and looking at the planets with their own eyes if they get the chance in the next few days.”
Published in the journal Endocrine review, this research suggests that certain naturally occurring hormones might be able to slow down the aging process in the body.
“Our study sheds light on key hormones that play a role in regulating pathways associated with skin aging, including connective tissue degradation (which leads to wrinkles), stem cell survival, and pigment loss (which causes graying of hair),” explained Professor Markus Böhm from the University of Munster, Germany.
“Some of these hormones have shown anti-aging properties and could potentially be used as treatments to prevent skin aging in the future.”
The primary focus of this research was to examine the connection between hormones and aging, with a particular emphasis on hormones like estrogen, growth hormone, and melatonin, all of which can impact skin aging.
One hormone that stood out in the study was melatonin. While commonly known for its role in regulating sleep, melatonin was found to also play a role in maintaining youthful skin. Its powerful antioxidant effects help protect skin cells and slow the aging process.
Other hormones, such as melanocyte-stimulating hormone and oxytocin, were also identified as potential contributors to maintaining youthful skin and hair and protecting against UV damage.
The skin, being the body’s largest organ, is prone to damage from environmental factors, especially UV rays from the sun.
“The skin not only responds to various hormones that impact skin aging pathways, but it is also a significant site for hormone production, aside from the traditional endocrine glands like the pituitary gland,” added Böhm.
Researchers are hopeful that these findings will lead to the development of a new anti-aging therapy known as Senotherapeutics, which targets and eliminates senescent cells. By doing so, these drugs may help slow down or even reverse the signs of aging that result from the accumulation of these cells in the body over time.
“Further research on these hormones could pave the way for the development of new treatments to address and prevent skin aging,” concluded Böhm.
The NASA/ESA Hubble Space Telescope produced excellent images of a small portion of the Veil Nebula, part of the remnants of a supernova called the Cygnus loop.
This Hubble image shows part of the Veil Nebula. Image credits: NASA/ESA/Hubble/R. Sankrit.
Cygnus loop It is a large donut-shaped nebula located approximately 2,400 light years from Earth.
Also known as the W78 and Sharpless 103, it is actually an explosive blast from a supernova explosion that occurred 10,000 to 20,000 years ago.
Its name comes from the position of the northern constellations of Cygnus and covers an area 36 times the full moon.
The visual part of the supernova remains is known as the veil nebula, also known as the caterpillar or filamentous nebula.
“This nebula is about 20 times more star remnants than the sun that exploded 10,000 to 20,000 years ago,” said Hubble astronomers.
This new image consists of observations from Hubble Wide Field Camera 3 (WFC3) Optical part of the spectrum.
“This view combines images taken with three different filters to highlight the release from hydrogen, sulfur and oxygen atoms,” the astronomer said.
“The image shows just a small part of the Veil Nebula. If we could see the entire nebula without the help of a telescope, it would be as wide as six full moons were placed side by side.”
“The image captures the Veil Nebula at just one point, but it helps researchers understand how the remnants of the supernova have evolved over the decades.”
“Combining this snapshot with Hubble observations from 1994 reveals the movement of individual knots and gas filaments over that time, improving our understanding of this stunning nebula.”
Mixing 50 grams of walnuts with muesli and yogurt increased faster reaction times throughout the day, and later in the day, according to a team of scientists at USDA Human Nutrition Research Center, a reading university at Tufts University's Aging, which improved memory performance later that day compared to eating a breakfast that suited comparable calories.
Eating walnuts for breakfast can improve brain function in healthy young adults. Image credit: Tim Ulama.
“Diet is one of the most important lifestyle factors that strongly affect cognitive function,” says Professor Claire Williams of the University of Reading and a colleague.
“Therefore, a balanced diet rich in nutrients can improve cognitive function throughout your life.”
“One of the class of foods linked to beneficial cognitive health is the nut family, and several epidemiological studies highlight the positive relationship between regular nut consumption and cognitive function.”
“For example, epidemiological studies, such as the Doetinchem Cohort study, found that levels of nut consumption were positively predicted for memory, processing speed, cognitive flexibility, and global cognitive function in middle-aged adults.
“Preclinical studies have also demonstrated the cognitive benefits of walnut supplementation.”
“Rodent studies have shown that walnuts promote improved working memory performance on Morris' water maze tasks and improve learning and memory performance in elevated and radial arm mazes.”
“The cognitive benefits of walnuts can be due to certain nutrients, as they are known to be high in omega-3 fatty acids, protein/peptides, and flavonoids and polyphenol classes,” they added.
“The main purpose of our study was to determine the cognitive and mood effects of acute consumption of walnut-rich breakfasts in healthy young adults throughout the day, and secondly, to investigate the potential neurological and physiological mechanisms that explain the benefits of cognitive.”
In this study, 32 healthy young adults ages 18-30 consumed both walnut-rich and matched breakfasts on separate occasions.
Participants completed various cognitive tests while monitoring brain activity 6 hours after eating each breakfast.
“Breakfast and some walnuts can give young adults a mental advantage when they need to play at the top of the game,” Professor Williams said.
“It's particularly exciting that this simple diet can make a measurable difference in cognitive performance.”
Brain activity records revealed changes in neural activity suggesting that walnuts may help the brain work more efficiently during challenging mental tasks, and blood samples revealed positive changes in glucose and fatty acid levels.
“Our findings provide evidence of the benefits of reaction time throughout the day after a walnut-rich breakfast, but memory findings were mixed with benefits observed only later in the day,” the researchers said.
“However, more research is needed on how walnut-containing diets modulate cognitive improvement in humans both postpartum and long-term.”
result Published in the journal Food and Function.
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L. Bell et al. The effect of walnut-rich breakfast on daily cognitive performance and brain activity in healthy young adults: a crossover intervention trial. Food functionsPublished online on February 3, 2025. doi:10.1039/d4fo04832f
New research reveals a potential protective role for citrus fruits in preventing depression. Faecalibacterium prausnitzii, a type of bacteria found in the human intestine, and its metabolic activity, may influence the impact of citrus fruits and their flavonoids on mood.
Samuthpontorn et al. We report that citrus intake and its ingredients are positively associated with changes in abundance of 15 intestinal microbial species, including reduced risk of depression and enrichment Faecalibacterium prausnitzii. Image credit: Hans.
Depression is a widespread and debilitating condition that affects more than 280 million individuals around the world.
The exact cause of depression is unknown, and treatment is often ineffective.
70% of patients with depression are unable to respond to initial antidepressant treatment and experience unbearable side effects of the drug.
Diet may be a promising tool for preventing and managing depression.
Mediterranean diets are associated with a nearly 35% reduction in the risk of depression, and similar diets show a reduction in mood symptoms.
While the specific food groups underlying these findings remain unknown, recent studies have linked citrus fruits, such as oranges and grapefruits, with a reduced risk of depression.
However, the mechanisms explaining the relationship between diet and depression prevention remain unclear.
In a recent study, Dr. Raaj Mehta, a medical instructor at Harvard Medical School and a physician at Massachusetts General Hospital, along with colleagues, analyzed the interactions between citrus consumption, gut microbiome, and risk of depression in over 32,427 participants.
They prospectively examined the long-term effects of citrus intake on depression, the abundance of gut microbial species, and the potential metabolic pathways related to depression.
“I was collaborating with a talented postdoc named Chatpol Samuthpontorn. He came across a paper from 2016 suggesting that citrus fruits could reduce the risk of depression,” explained Dr. Mehta.
“This finding intrigued us, as we had access to extensive datasets that could help us investigate further.”
“One of these datasets was the Nurse Health Study II (NHS2), which began in 1989 to identify risk factors for major chronic diseases in women.”
“We found evidence in this dataset that nurses who consumed higher amounts of citrus fruits had a lower incidence of depression in the future.”
The authors found that consuming one medium orange per day could reduce the risk of developing depression by about 20%.
“When examining total fruit and vegetable consumption, or other individual fruits like apples and bananas, we did not observe a significant relationship with depression risk,” Dr. Mehta noted.
A unique aspect of this study was that a subset of NHS2 participants provided stool samples over a year for researchers to analyze.
“We used DNA sequencing results from these stool samples to identify links between citrus intake and specific bacterial species in the gut microbiota,” said Dr. Mehta.
“People who were not depressed had higher levels of this bacterium, and consuming more citrus was also linked to increased levels of Faecalibacterium prausnitzii.”
“This bacterium may play a key role in connecting citrus consumption with good mental health.”
“We also investigated similar studies involving men, as NHS2 only included women, and found an inverse correlation between Faecalibacterium prausnitzii and depression risk scores in this group,” Dr. Mehta added.
“This raises the question: Does Faecalibacterium prausnitzii contribute to positive mood?”
“One possible explanation is that these bacteria use metabolic pathways, such as the S-adenosyl-L-methionine cycle I pathway, to influence the production of neurotransmitters like serotonin and dopamine in the intestine,” Dr. Mehta explained.
“These neurotransmitters not only influence digestion but can also travel to the brain, where they affect mood.”
“We hope our findings encourage further research into the link between diet and mental health,” Dr. Mehta stated.
“People generally understand that food can impact mood, but researchers are just starting to unravel the specifics.”
A paper detailing these findings was published in the journal Microbiome.
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C. Samuthpontorn et al. 2024. F. Prausnitzii Potentially modulates the association between citrus intake and depression. Microbiome 12, 237; doi:10.1186/s40168-024-01961-3
A team of researchers from Bayerisches Geoinstitut conducted high-pressure temperature laboratory experiments to determine the crystal structure and density of the iron sulfide phase in the Mars core.
man et al. The formula shows that the high pressure iron sulfide phase is fe4+xs3 It has a higher density than the liquid Mars core, and its fe4+xs3 When the temperature drops below 1960 K at the center of Mars, the inner core crystallizes. Image credits: NASA/JPL-Caltech/University of Maryland.
Like Earth's core, Mars' core is expected to be made up of molten ferrous metals.
However, the density is low, indicating that the Mars core must contain rich amounts of additional lighter elements, such as sulfur.
Previously, it was thought that the temperature of the Martian core would likely be too high for the solid inner core to crystallize, but the possibility of the iron sulfide mineral that forms the inner core was not examined in detail.
“Observations from NASA's insight mission reveal that Mars' core is enriched in the light element, as Mars' nuclei appears to be significantly lower than the density of iron-nickel alloys,” said Leangie, a researcher at Geoinstitut at Bayerish.
“From a cosmic perspective and geochemical considerations, candidate light elements in the Mars core include sulfur, oxygen, carbon and hydrogen.”
“In particular, sulfur is the most common moderately volatile element of the solar nebulae, and is the “iron-loving” behavior during core mantle differentiation, and is therefore often emphasized as a possible main component of the Mars core, as Mars' core formation is not extended enough or is not at the height of silicon or oxycone.
“Earthquake and Lander radio science data from the Insight mission confirmed that Mars has a flow core, but now geophysical basis cannot rule out the presence of a solid inner core.”
“In addition, geophysical observations, when combined with the physical interpretation of the appropriate minerals, provide not only essential constraints on internal composition and temperature, but also provide the mechanism that initiated and terminated the magnetic field of early Mars.”
In their study, scientists conducted high-pressure temperature lab experiments to determine the crystal structure and density of the iron sulfide phase in the Mars core.
They suggest that the temperature at the center of Mars should be below about 1,960 Kelvin, which is within the estimated range of this region.
Further geophysical measurements are required to confirm the actual presence of the core inside solid Mars.
“But our work supports the potential of a solid inner Mars core today, after Mars has been cooled further, or in the near future,” the author said.
Their paper Published in the journal Natural Communication.
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L. Mann et al. 2025. Structure and stability of Fe4+xs3 And the possibility of forming the inner core of Mars. Nut commune 16, 1710; doi:10.1038/s41467-025-56220-2
NASA’s Lucy spacecraft flies by the small asteroid Donald Johansson on April 20, 2025.
By flashing between images captured by NASA’s Lucy spacecraft on February 20th and 22nd, 2025, this animation shows Donald Johansson’s perceived movement against the background star as the spacecraft rapidly approaches the asteroid. Image credit: NASA/GODDARD/SWRI/JOHNS HOPKINS APL.
Donald Johansson It is a carbonaceous small intestine about 4 km (2.5 miles) in diameter.
First discovered by American astronomer Sheltebas at the Siding Spring Observatory on March 2, 1981, it orbited within the inner region of the main asteroid belt.
NASA’s Lucy spacecraft will pass within 960 km (596 miles) of Donald Johansson on April 20th.
“This second asteroid encounter for Lucy will serve as a rehearsal for Jupiter’s Trojan asteroid outfit, the spacecraft’s main target,” a member of the Lucy team said in a statement.
“The spacecraft had already successfully observed the main belt asteroid Dinkinesh and its moon, Serum and Serum in November 2023.”
This diagram shows NASA’s Lucy spacecraft passing through one of the Trojan asteroids near Jupiter. Image credit: Southwest Research Institute.
“But at a distance of 70 million km (45 million miles), Donald Johansson is still dim, but he stands out clearly in this area of relatively faint stars in the constellations of Sextane,” the researchers said.
“The north of the sky is on the right side of the frame, with a 0.11-degree field of vision corresponding to 85,500 miles (140,000 km) of asteroidal distance.”
“Of the two images, another dimly lit asteroid can see the photobomb in the quadrant at the bottom right of the image.”
“However, as the headlights of approaching cars often remain relatively still, Donald Johansson’s obvious movement between these two images is much smaller than that of this intruder, who has fallen out of sight in the second image.”
According to scientists, Donald Johansson was named after anthropologist Donald Johansson, who discovered “Lucy.” Lucy Mission is named after the fossil.
“Lucy will continue to image Donald Johansson as part of his optical navigation program for the next two months. The optical navigation program will use the apparent position of the asteroid against the star’s background to ensure an accurate flyby,” they said.
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.”
A new study led by scientists at the Max Planck Institute of Geoanthropology challenges traditional ideas about the habitability of ancient tropical forests and suggests that West Africa may be an important center of the evolution of our species. Homo sapiens.
The Bete I site in Ivory Coast and other African sites from around 130,000-190,000 years ago. Image credits: Awakening et al. , doi: 10.1038/s41586-025-08613-y.
Homo sapiens It is believed that it appeared in Africa about 300,000 years ago before it was dispersed around the world.
Humans lived in the rainforests in Asia and Oceania 45,000 years ago, but there was the earliest evidence to connect people to the rainforests in Africa about 18,000 years ago.
“Our species are thought to have emerged in Africa 300,000 years ago before they were dispersed to occupy all the biomes of the world, from deserts to densely populated rainforests,” says Dr. Eslem Ben Araus, a researcher at the National Center for Human Evolution and a geographer at the Max Planck Institute.
“While grasslands and coasts are usually given advantages in studying the cultural and environmental contexts of human emergence and spread, recent evidence relates several regions and ecosystems during the early prehistoric periods of our species.”
“The tropical rainforest settlements in Asia and Oceania have been well documented as early as 45,000 years ago, and perhaps 73,000 years ago.”
“However, despite evidence that central Stone Age assembly is widespread in modern African rainforest regions, the oldest safe and close human associations with such damp tropical forests in Africa are not more than about 18,000.”
In their study, in the Agnama region of Côte de Iboir in West Africa, Dr. Auros and co-authors focused on the archaeological site of Bethe I.
The site is 150,000 years old and contains signs of human occupation, such as stone tools such as picks and small objects.
“Several recent climate models suggest that even during the arid season of forest fragmentation, the area may have been a refuge for rainforests,” said Professor Eleanor Serli, a researcher at the Max Planck Institute.
“We knew this site offered the best possible opportunity to know how much it has returned to past rainforest settlements.”
Researchers investigated sediment samples of precipitated plants called pollen, silicid plant plants, and investigated wax isotopes in the leaves.
Their analysis shows that the area is rich in woodland and has pollen and leaf wax typical of wet West African rainforests.
Low levels of grass pollen showed that this site was not in narrow forest strips and not in dense forests.
“This exciting discovery is the first in a long list, as there are other Koiboria sites waiting to be investigated to study the human presence associated with rainforests.”
“Convergent evidence shows that there is no doubt that ecological diversity is at the heart of our species,” added Professor Scerri.
“This reflects the complex history of the population plots in which different populations lived in different regions and habitat types.”
“We now need to ask how these early human niche expansions affected the flora and fauna that shared the same niche space with humans.”
“In other words, how much will human changes in human nature's habitat return?”
study Today I'll be appearing in the journal Nature.
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E. Ben Aurus et al. A man from a wet tropical forest in Africa 150,000 years ago. NaturePublished online on February 26th, 2025. doi:10.1038/s41586-025-08613-y
The new NASA Space Observatory is set to launch into orbit on Thursday with a crucial mission to map over 450 million galaxies.
The Spherex mission, short for the spectrophoton meter of space history, reionization epoch, and Ice Explorer history, will map the entire sky four times over two years, giving scientists the chance to study galaxy formation and uncover insights into the universe’s evolution.
“That’s going to answer the fundamental question: how did we get here?” Shawn Domagal-Goldman, acting director of the Astrophysics Division at NASA headquarters, stated in a recent news briefing.
Spherex is scheduled to be launched from the Vandenberg Space Force Base in California at 10:09 pm on Thursday.
The cone-shaped spacecraft will be launched on a SpaceX Falcon 9 rocket along with four suitcase-sized satellites deployed simultaneously for another NASA mission to study the sun.
A spacecraft preliminary design that includes a hexagonal solar shield to help keep your instrument cool. NASA / JPL-Caltech
The $488 million Spherex mission has been in development for approximately 10 years. According to NASA, it aims to map objects using 102 infrared colors and light.
Infrared technology allows scientists to see through dust and gas, observing some of the oldest stars and galaxies in the universe. By utilizing spectroscopy, scientists can analyze the composition, density, temperature, and movement of celestial objects.
The Spherex Observatory employs spectrometers to explore the sky in three dimensions and study hundreds of millions of galaxies’ properties, as stated by Jamie Bock, a lead investigator at the Spherex mission and a physics professor at the California Institute of Technology.
Bock mentioned that these observations could provide insights into galaxy formation and allow researchers to examine the origins of water and other organic materials in the Milky Way galaxy.
“When you dissect light, you can determine the galaxy’s distance, construct a three-dimensional map, and identify the water fingerprint,” Bock explained.
Unraveling the origins of water can enhance scientific understanding of life’s evolution on Earth and possibly reveal clues about vital life components elsewhere in the galaxy.
“This new capability can lead to discoveries or surprises,” Bock added.
By mapping the celestial sky, the Spherex mission addresses one of astronomy’s enduring mysteries: The Big Bang that Created the Universe approximately 13.8 billion years ago.
One theory proposed in the late 1970s and early 1980s suggests the universe experienced a staggering trillion-fold expansion in the first fraction of a second post-big bang. Known as cosmic inflation, this theory aims to explain the universe’s curved geometry, structure formation, and rapid expansion.
However, astronomers have grappled with connecting the driving force behind this cosmic inflation and why it occurred. By meticulously mapping hundreds of millions of galaxies, the Spherex mission can test theories in new ways, aiding scientists in refining the physics underlying the universe’s inflation and rapid expansion.
“What Spherex does is test specific inflation models by tracking hundreds of millions of galaxies in three dimensions,” Brock noted.
Domagal-Goldman expressed that the Spherex Mission’s exploration of galaxies, cosmic inflation, and the universe’s origins could deepen human comprehension of basic physics.
“We are fortunate to live in an era where we can uncover answers about the universe’s long narrative of human existence on this planet,” he remarked.
Whether we communicate, whether we are worried about how we choose the right words to scribbles on Valentine’s Day cards or suffering from the way we ask our bosses awkward questions, there is very little trouble in our lives. And that’s before you become the incredible realm of digital communication and the new danger of “hybrid meetings”, the danger of trembling.
Andrew Brozky I know these challenges better than most. Based at the University of Texas at Austin, he is a workplace technology and communications expert. His own situation means that face-to-face interactions are not always possible in his teens, which led him to study virtual interactions. His insights have become invaluable when the Covid-19 pandemic came and we were all forced to be on platforms like Zoom and the team.
Brodsky is currently studying virtual communications of over 100,000 people, and his findings have led to a book. Ping: The secret to success in virtual communication. Drawing on his research and insights from others in the field, Brodsky unlocks secrets that will help us succeed in our personal lives and careers, giving some pointers with obvious pitfalls. Was that meeting via email? How close do you need to be to someone before sending a voice note? Brodsky has the answer.
Chris Stokel-Walker: Communication digitally is something we all have to do, but what led us to look at this very closely?
Andrew Brodsky: One of the things that really shocked me in my life is that I have cancer…
Jeff Goldblum has made many contributions to this world, but perhaps the best is the delivery of the iconic line in the 1993 film Jurassic Park. In the scene where his character Ian Malcolm bets Dinosaur Park creator John Hammond, Goldblum speaks of what has become a long-standing meme.
As we might call it high, paradigms are a great way to think about the risks and rewards of scientific efforts.
Still, it is rare to see scientists appear strongly in their field of research. As a mathematician, Malcolm probably didn’t really care much about the development of genetics. Perhaps this has given us a recent warning against creating “Mirror Life.” Molecules can wreaking havoc through the biosphere, where they have an opposite orientation to everything else on Earth.
The creation of mirror life can cause havoc through the biosphere
Mirror Life fails violently on the “must-have” side of the scale, but there seems to be little reason to create it – in other cases, the decision is not that easy. Perhaps the most troublesome recent example is gain-of-function research. This is where often pathogenic organisms are modified and increase their ability to both risk and reward. For example, changing the flu virus makes it obviously a risk to make it easier to infect humans. But if it helps us understand the virus and potentially prevent the pandemic, is it worth it?
The acquisition of features has always been controversial, but recently the debate over it has exploded. People who believe that SARS-Cov-2, the virus behind Covid-19, was created in the lab – no evidence-based belief jumped on gain-of-function research as a smoking gun. Does this mean that such work must be prohibited? Perhaps not, but in Malcolm’s words, we need to keep in mind the distinction between “possibility” and “essential.”
Woman drinks water during heat waves in French Hierrez
Magali Cohen/Hans Lucas/AFP Getty Images
Extreme fever appears to speed up biological aging in older adults, suggesting that it may increase the risk of age-related diseases.
“This is one of the first large-scale studies linking long-term heat exposure to biological aging in humans,” he says. Eun Young Choi At the University of Southern California. “Elderly people who live in areas with biologically extreme heat in cooler areas.”
Choi and her colleagues analyzed genetic data extracted from blood samples collected by other researchers from 3,600 people in the US in 2006-7. At the time, they were all over 56 years old.
They estimated the biological age of each participant using three so-called epigenetic clocks, including seeing patterns of chemical tags called methyl groups on DNA. These patterns change as we age, and such changes are associated with age-related diseases.
The researchers also looked at daily temperature measurements taken within a few kilometres of where participants lived for six years before blood samples were collected.
They found that every 200 days of six years when participants were exposed to daily maximum temperatures of at least 32.2°C (90°), biological age was on average up to 3.5 months old, and on average up to 3.5 months of age than those in cooler areas. That number depends on which watch was used.
“This refers to heat exposure increasing the rate of biological aging,” he says. Austin Argencheri At Harvard University, where he was not involved in the research.
Previous studies on the Taiwanese and German people have also found a link between extreme heat exposure and biological aging.
However, epigenetic watches do not fully capture the aging process or the risk of people's illnesses, says Argentieri. “More jobs that can link both extreme heat exposure, biological aging from these watches, age-related diseases, mortality and the effects on life expectancy itself will help us drive home what we need to take away from now on.”
Furthermore, the study did not consider access to air conditioners or the duration of time participants spent outdoors, so individual exposure changes to heat exposure, says Argentieri. The team controlled for other factors such as age, gender, race, wealth, ethnicity, smoking status, alcohol consumption, obesity, and physical activity.
Furthermore, research should investigate whether results will be translated to younger people or to people living in different countries where people may have different approaches to keeping people cool, says Argentieri.
Identifying the people who are at the lowest risk of aging fastest due to extreme heat could help policymakers develop and deploy measures to protect them, he says.
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