A hydrothermal explosion occurred just north of Old Faithful geyser on Tuesday, spewing rocks and steam into the air and forcing visitors to flee to safety, Yellowstone National Park officials said.
According to the National Park Service, the explosion happened around 10:19 a.m. in Biscuit Basin, about two miles northwest of Old Faithful, and no one was injured and the extent of damage is unknown. It said in a statement.
The type of explosion that occurred on Tuesday was hot water related, “rapidly ejecting boiling water, steam, mud and rock debris,” the statement said. According to the U.S. Geological Survey.
Eruption video People, including children, were seen running as columns of black and grey matter and steam spewed into the air.
Yellowstone is famous for its hot springs and thermal pools.
According to the USGS, a hydrothermal explosion occurs when underground water at or near boiling point is rapidly transformed into a stream of water due to a drop in pressure.
Outbursts like Tuesday’s are “relatively common in Yellowstone,” the USGS said. It said in a statement Following the incident, Norris Geyser Basin reported a small explosion in April, and Biscuit Basin reported an explosion in 2009.
Photos posted by Yellowstone National Park showed a nearby trail covered in dirt, rocks and debris.
The National Park Service said the trails and parking lots are closed until further notice due to safety concerns, and noted the explosion is not related to any volcanic activity.
Park staff and USGS personnel are monitoring the situation and will determine when the area can be reopened, officials said.
Dead Planets Society is a podcast that takes some crazy ideas for how to tinker with the universe and tests their effects against the laws of physics, from snapping the moon in half to causing doomsday events with gravitational waves. apple, Spotify Or check out our podcast page.
Uranus and Neptune are so similar that we don't need both. That's the idea behind this episode of Dead Planets Society, in which hosts Chelsea Whyte and Leah Crane decide to light Uranus on fire.
There's a scientific justification for this, of course. For one thing, burning material and examining the light from it, a process called spectroscopy, is one of the best ways to determine its chemical composition. And because the depths of ice giants remain murky and mysterious, burning up the outer layers could reveal what's underneath.
Before you reach for the matches, let's talk about our special guest, planetary scientist Pole Barn That could be tricky, says a researcher at Washington University in St. Louis, Missouri: Uranus' outer layers lack the oxygen needed for combustion, he explains, so pumping in more oxygen than is contained in the entire solar system might not be helpful.
But the interior of Uranus isn't just shrouded in mystery – it may also be full of iceberg-like diamond chunks. This quickly changes the host's focus: this is no longer a fireworks mission, but a heist.
While the planet's outer layers would still need to be removed, the most efficient way would probably be to collide it with another planet. Viewed from Earth, this would be seen as a flash of light, a glowing cloud of steam, and perhaps a bright tail forming behind Uranus. The impact would need to be carefully planned so as not to shatter the planet and its diamonds.
But a suitable collision could accomplish both the new goal of obtaining Uranus' diamonds and the original goal of exposing and studying its depths. It could also destroy the entire solar system, but when has the Society of Dead Planets ever worried about that?
Paleontologists have described a new species of snake that lived during the Early Oligocene of Wyoming, based on four nearly complete, articulated specimens found curled together in a burrow.
Hibernophis Brighthaupti It lived 38 million years ago in what is now western Wyoming. Image courtesy of Jasmine Croghan.
Hibernophis Brighthaupti It lived in North America 38 million years ago (Early Oligocene Epoch).
The fossil has unique anatomical features, in part because the specimen is articulated, meaning that it was found all together with its bones in the proper order, which is unusual for a fossil snake.
Hibernophis Brighthaupti Probably an early member Boideia A group that includes modern boas and pythons.
“Modern boas are widespread across the Americas, but their early evolution is poorly understood,” said researchers from the University of Alberta. Professor Michael Caldwell And my colleagues.
“These new and extremely complete fossils add important new information, especially about the evolution of the small burrowing boas known as rubber boas.”
“Traditionally, there has been a lot of discussion about the evolution of small burrowing bores.”
“Hibernophis Brighthaupti This suggests that northern and central North America may have been an important base for their development.”
According to the team: Hibernophis Brighthaupti Thanks to its location, the specimen has been remarkably well preserved for tens of millions of years.
“38 million years ago, these particular Hibernophis Brighthaupti “At the time the snakes lived, the Southern Basin-Range volcanic system was incredibly active, emitting huge amounts of volcanic ash,” said Professor Caldwell, lead author of the study.
“The ash settled and helped preserve the remains of the organisms found within the fine sandy mudstone matrix typical of the White River Formation.”
Paleontologists speculate that the animals may have fallen victim to a small flood.
“Geologically speaking, they were preserved in very unusual conditions,” Professor Caldwell said.
“Fossilization is a brutal process. You need exactly the right conditions to preserve something.”
Four discoveries Hibernophis Brighthaupti The curled-up sleeping arrangement also suggests that this may be the oldest evidence of communal hibernation, a behaviour we know today.
“Modern garter snakes are notorious for congregating in the thousands and hibernating together in burrows and holes,” Professor Caldwell said.
“They do this to take advantage of the ball effect created by hibernating animals to conserve heat.”
“It's fascinating to see evidence of this social behavior and hibernation going back 34 million years.”
of study Published in Zoological Journal of the Linnean Society.
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Jasmine A. Croghan othersMorphology and taxonomy of a new fossil snake from the early Rupelian (Oligocene) White River Formation, Wyoming. Zoological Journal of the Linnean SocietyPublished online June 19, 2024; doi: 10.1093/zoolinnean/zlae073
Robot dogs equipped with flame throwers could be used to prevent weeds from growing on farms, offering a potential alternative to harmful herbicides.
Even highly targeted herbicides can cause environmental problems and affect local wildlife, and “superweeds” are rapidly evolving resistance to the most common herbicides like glyphosate.
Looking for alternative solutions Song Deokjin Researchers at Texas A&M University have developed a weed control system that emits short bursts of heat from a propane-powered flame thrower controlled by a robotic arm attached to a Boston Dynamics Spot Robot.
Rather than incinerating weeds, the robot is designed to identify and heat the core of the plant, which can stop weed growth for weeks, Song said. “It doesn't kill the weeds, it just inhibits their growth, giving the crop a chance to fight them.”
Song and his team first tested the flame nozzle to see if it could accurately target the center of the weeds, then deployed the robot in a cotton field that was also planted with weeds, including sunflowers, which are native to Texas.Sun Flower) and giant ragweed (Ambrosia trifidaFive tests showed the robot could find weeds and focus an average of 95 percent of its flames on them to burn them down.
Song said the Spot robot's biggest limitation is its battery life — it can only operate for about 40 minutes before needing to be recharged — but the team is working on upgrading it to a longer-lasting device. They're also considering equipping the robot dog with an electric shock device that can deliver more than 10,000 volts of current, which would stop weeds from growing for longer.
“With other machines, people use a fairly broad, inaccurate flame to kill weeds. That's been around for a while, but I've never seen anything as precise as this.” Simon Pearson A researcher at the University of Lincoln in the UK said the robot's success will depend on how precisely it can deliver the flames without damaging valuable crops.
Arizona public health officials are cautioning about the hantavirus, a disease that spreads from rodents to humans and has led to an increase in a deadly pulmonary syndrome. The Arizona Department of Health Services has reported seven confirmed cases and three deaths in the past six months. For more information, check out the recent health alerts.
Most hantavirus cases are seen in the Western and Southwestern U.S., with most states reporting one to four cases per year. Two cases have been reported in California this year. Unfortunately, there is no specific treatment or vaccine for hantavirus.
In Arizona from 2016 to 2022, there have been 11 reported cases of hantavirus, with four cases in 2016, two in 2017, four in 2020, and one in 2022.
Dr. Aaron Glatt, chief of infectious diseases at Mount Sinai South Nassau Hospital, warns that hantaviruses can cause severe and potentially fatal respiratory infections, especially transmitted by rodents like deer mice.
San Diego County and the California Department of Public Health have also noted increased hantavirus activity this year.
Changes in rodent populations affected by season and weather conditions could be contributing to the increase in hantavirus cases in Arizona. People are more likely to come into contact with rodents during the summer when they are more active.
Climate change and extreme weather events may also play a role in the spread of hantavirus.
Dr. Camilo Mora, a professor at the University of Hawaii, warns that climate change could impact the spread of disease-carrier species, leading to potential outbreaks.
Experts emphasize the need for careful handling of rodent excrement and avoidance of contact with rodents to prevent hantavirus infections.
Hantavirus Symptoms
Hantavirus particles are released into the air when disturbed, leading to Hantavirus Pulmonary Syndrome (HPS).
HPS symptoms may appear 1 to 8 weeks after contact with an infected rodent and can progress to serious lung infections if left untreated.
fever
malaise
muscle pain
nausea, vomiting, abdominal pain
Approximately 38% of people with pulmonary symptoms from hantavirus may die from the disease.
How to Prevent Hantavirus
Cleaning up rodent excrement and avoiding contact with rodents are key prevention measures according to experts.
Spring cleaning activities like opening and cleaning closed spaces could increase the risk of rodent infestation and hantavirus exposure.
Proper precautions should be taken when entering closed and unoccupied spaces that may have rodents present.
The U.S. has seen a significant decrease in greenhouse gas emissions due to the growth of clean energy, but it falls short of the targets set in the Paris climate agreement, according to a recent analysis by Rhodium. Rhodium is a research firm that monitors U.S. progress in meeting climate change objectives.
In the Paris agreement, 194 nations pledged to limit the global average temperature increase to below 2 degrees Celsius. The U.S. has set a goal to reduce emissions by at least 50% by 2030 compared to 2005 levels. However, Rhodium’s report projects that U.S. greenhouse gas emissions will only be 32 to 43 percent below this benchmark by 2030, and 38 to 56 percent below it five years later.
The report indicates that clean energy investments are rapidly increasing, economic growth is no longer reliant on fossil fuels, and President Joe Biden’s climate change initiatives are speeding up electrification efforts.
Despite these positive developments, there are obstacles to overcome. Data centers consuming large amounts of power are driving up electricity demand, recent Supreme Court rulings have weakened federal regulatory powers, and there is a divide between Democrats and Republicans on climate policies as an election approaches.
The U.S. achieved record-breaking numbers last year in adding solar power and clean energy storage to the grid. Ben King, associate director of energy and climate at Rhodium Group, believes these years will be remembered as a pivotal moment in climate policy.
However, the transition to clean energy needs to accelerate further to meet U.S. emissions targets without additional policy actions. Clean energy capacity must increase significantly to achieve Rhodium’s high-end emissions reduction projections.
Challenges such as building transmission lines, sourcing materials for wind power projects, and obtaining licenses for new facilities need to be addressed to speed up the energy transition, according to King.
The report predicts a substantial increase in electricity demand by 2035, driven by the electrification of vehicles and appliances, as well as the usage of data centers for various energy-intensive activities.
Investments in clean energy, transportation, and technology are on the rise, with companies pouring $71 billion into these sectors in the first quarter of 2024, a significant increase from the previous year.
The future of U.S. greenhouse gas emissions will be influenced by the upcoming election, with potential policy changes depending on the outcome. Rhodium anticipates environmental policy challenges following recent Supreme Court decisions, and the next administration will need to strategize to address these challenges.
Researchers from the Scottish Institute for Marine Science have discovered that the deep ocean floor of the Pacific Ocean, covered with polymetallic nodules, produces so-called “dark oxygen.”
Polymetallic nodules recovered from the ocean floor in a Northwestern University lab. Image courtesy of Camille Bridgewater/Northwestern University.
Polymetallic nodules – naturally occurring mineral deposits that form on the seafloor – are commonly found in the sediment-covered abyssal plains of oceans around the world.
These consist primarily of iron and manganese oxides, but also contain metals such as cobalt and rare earth elements, which are essential components of many advanced, low-carbon energy technologies.
For the new study, Dr Andrew Sweetman from the Scottish Institute for Marine Science and his colleagues carried out experiments using chambers placed on the seafloor at a depth of around 4,200 metres to measure oxygen levels at multiple sites more than 4,000 kilometres apart in the Clarion-Clipperton Zone in the central Pacific Ocean, where polymetallic nodules are found.
Nearly every experiment showed a steady increase in oxygen levels over the two days.
The researchers conducted additional laboratory analysis and claim that the source of the detected oxygen release is polymetallic nodules.
Based on numerical simulations, they hypothesize that the electrical properties of the nodes are responsible for oxygen production.
While the researchers note that it is difficult to estimate how much oxygen polymetallic nodules produce over a wide area, they suggest that this source of oxygen may support ecosystems on the deep seafloor, which could be affected if these nodules are mined.
“We understand that oxygen was needed for aerobic life to begin on Earth, and Earth's oxygen supply began with photosynthetic organisms,” Dr Sweetman said.
“But we now know that oxygen is produced even in the deep ocean, where there is no light.”
“So I think we need to rethink questions like where did aerobic life begin.”
of result Published in a journal Nature Chemistry.
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A.K. Sweetman othersEvidence for dark oxygen production on the deep seafloor. National GeographyPublished online July 22, 2024, doi: 10.1038/s41561-024-01480-8
This article is based on a press release provided by Springer Nature and Northwestern University.
Palaeontologists have discovered the fossil of a previously unknown species of lizard in mid-Cretaceous amber unearthed in northern Myanmar.
Reconstructing your life Electrosincus Zeddyparts of the lizard not represented in available sources have been blurred. Image courtesy of Stephanie Abramowicz.
The newly discovered species was a small lizard, estimated to be about 3 centimetres (1.2 inches) long from snout to anus.
Named Electrosincus ZeddyIt lived during the mid-Cretaceous period, about 99 million years ago.
Unlike other squamate animals (lizards and snakes) that lived during the Mesozoic era, they have a layered and complex structure. Cortical bone They are arranged alternately around the body, supporting its classification as a lizard. Gerbils.
“The family Pectiniidae is a highly diverse lineage of squamate animals that is now nearly universally distributed in temperate and tropical regions around the world,” said Dr. Juan Daza of Sam Houston State University and colleagues.
“This comprises more than 1,745 described extant species, about 15 percent of all extant lizards.”
“Typically, lizards have cylindrical bodies and relatively short limbs, and evolution towards shortening or loss of limbs has occurred in more than 50 lizard lineages.”
“Among the living syncoids (Xanthus, Gerphosauridae, Cordylidae, and Syncoidae), syncoid species have the greatest range in body length, ranging from tiny species just a few centimetres in length to extinct species. Tiliqua FrangensIt may have reached a height of more than 50 centimetres.”
“Skinks also vary greatly in the number of presacral vertebrae, ranging from 26 to 108, which, together with round scales and compound bone plates, may have facilitated the repeated evolution of depressed and limbless morphologies.”
“Most lizards have smooth, circular scales beneath which extend compound osteoderms, which are bony plates within the dermis made up of multiple articulating dermal fragments per scale.”
Electrosincus ZeddyVentral (a) and dorsal (b) views of the fossil. Detail of the right foot (c, e) and bone plate (d). X-ray of the entire specimen, showing skeletal remains and some articulated and scattered bone plates (f). Image courtesy of Daza. others., doi: 10.1038/s41598-024-66451-w.
One Burmese Amber (Burmit) Preservation Electrosincus Zeddy It was discovered in a Mid-Cretaceous outcrop about 100 km west of Myitkyina Township, Myitkyina District, Kachin State in northern Myanmar.
The specimen contains two separate parts of a lizard, including scales and mainly appendicular bones, but is clearly part of a single individual.
“To date, more than 100 squamate specimens have been discovered in Burmite,” the paleontologists said.
“Within this large sample, the new fossil is the only one that preserves this cortical bone morphology, which makes it diagnosable as a Snecidae and distinguishes it from all known fossil squamates from the Cretaceous.”
“Although the specimen is incomplete, it preserves both postcranial skeletal elements and integumentary structures, which, although less than ideal, provides a basis for comparison with putative synthid specimens that may be discovered in the future.”
“This specimen has a combination of compound bony plates and overlapping circular scales that are only seen in lizards.”
“We suggest that this type of osteoderm evolved as a response to increased scale overlap and reduced stiffness of the skin armour,” the researchers concluded.
Their paper Published in the journal Scientific Reports.
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JD Daza others2024. A compound osteoderm preserved in amber identifies it as the oldest known lizard. Scientific Reports 14, 15662; doi: 10.1038/s41598-024-66451-w
When chimpanzees socialize, they exchange gestures at a rate similar to how humans converse.
The researchers surveyed five wild chimpanzees.Pan troglodytesThe researchers studied 8,559 gestures made by 252 chimpanzees across chimpanzee (Pan troglodytes) communities in East Africa — one of the largest studies of its kind. They recorded face-to-face interactions between the apes, recording the timing of one chimpanzee's gestures relative to those of the other.
An analysis of the ape “conversations” found that chimpanzees' signaling intervals are remarkably similar to human interactions, and even a little faster: “On average, it takes 120 milliseconds between the end of one gesture and the start of the next,” the researchers say. Gal Badig “In humans, the average is about 200 milliseconds, so this is very close,” said researchers at the University of St Andrews in the UK.
All chimpanzee groups responded quickly, but the exact timing varied from group to group: for example, chimpanzees from Sonso, Uganda, took a few milliseconds longer to return the gesture than the other chimpanzee groups studied.
Such differences in timing exist in human languages too. For example, Japanese speakers generally Faster turn changes Japanese people have a different conversational style than Danish speakers. “We don't know exactly why,” says Vadig. “As with humans, we don't know if it's a cultural difference, something we've learned over time, or a reaction to our environment.”
Chimpanzees interacting in the Budongo Forest in Uganda
Adrian Soldati
Only 14 percent of the interactions the researchers observed between chimpanzees involved any kind of interaction. Most consisted of a single gesture, such as “go away” or “follow me,” in which the other person ran away or followed. But interactions were more frequent when the chimpanzees were negotiating over food or grooming.
“What's really exciting about this study is that it shows that communication is a cooperative, socially engaged process in non-human animals,” Budig says, “and that the processes involved in human language may have actually evolved much earlier than we thought.”
Nodules taken from the ocean floor being examined in a laboratory
Camille Bridgewater (2024)
Metallic nodules scattered across the floor of the Indian and Pacific Oceans provide a source of oxygen for nearby marine life, a discovery that could upend our understanding of the deep ocean.
In some areas, the abyssal plains are dotted with potato-sized nodules rich in valuable cobalt, manganese and nickel that are targets for deep-sea mining activities.
Andrew Sweetman Researchers from the Scottish Institute for Marine Science in Oban, UK, were conducting research in the Clarion-Clipperton Zone of the Pacific Ocean (a region rich in nodules) in 2013 when they first noticed something odd about these waters.
Sweetman and his colleagues sent a machine to the ocean floor, sealed off a 22-square-centimeter section of the seafloor, and measured the flow of oxygen. Far from decreasing, the data suggested that oxygen content was actually increasing in the monitored areas.
But in the absence of any noticeable vegetation, Sweetman says, that didn’t make sense. “I was taught from an early age that oxygen-rich ecosystems were only possible through photosynthesis,” he says. He came to the conclusion that the machine he was using was flawed. “I literally ignored the data,” he says.
Then, in 2021, Sweetman went on another research cruise in the Pacific Ocean, and the machine made the same discovery: elevated oxygen levels at the ocean floor, even using a different measurement method.
“We were seeing the same oxygen production in these two different data sets,” Sweetman says, “and suddenly we realized that we’d been ignoring this incredibly innovative process for the last eight or nine years.”
He and his colleagues speculated that the metal nodules must play a role in boosting oxygen levels in the deep ocean, and laboratory tests of contaminating sediments and nodules ruled out the presence of oxygen-producing microorganisms.
Instead, Sweetman says the material in the nodules acts as a “geo-battery,” generating an electrical current that splits seawater into hydrogen and oxygen. “The reason these nodules are mined is because they contain everything you need to make electric car batteries,” he says. “What if the nodules themselves were acting as natural geo-batteries?”
When the team examined the rocks, they found that each nodule generated an electrical potential of up to 1 volt — when they combined together they could generate enough voltage to electrolyze seawater into hydrogen and oxygen, explaining why oxygen levels rise.
“We may have discovered a new natural source of oxygen,” Sweetman said, “We don’t know how widespread it is in time and space, but it’s very intriguing.”
Many questions remain unanswered. For example, the source of energy that creates the current remains a mystery. It’s also unclear whether the reaction occurs continuously, under what conditions, or how this oxygen contributes to maintaining the surrounding ecosystem. “We don’t have all the information yet, but we know it’s happening,” Sweetman says.
In deep-sea environments without sunlight or vegetation, some life forms get their energy from chemicals spewing from hydrothermal vents on the ocean floor. Some scientists believe life on Earth first emerged at these vents, but these early organisms would have needed a source of oxygen to make food from inorganic compounds. The new discovery suggests that the nodules could have been the oxygen source that helped life begin, Sweetman said.
That interpretation may be unreasonable, Donald Canfield The University of Southern Denmark researcher points out that oxygen is needed to produce the manganese oxides found in nodules. “Oxygenic photosynthesis is a prerequisite for the formation of nodules,” he says. “Therefore, oxygen production by nodules is not an alternative oxygen production equivalent to oxygenic photosynthesis. It is highly unlikely that nodules played a role in oxygenating the Earth.”
but, Ruth Blake The Yale researchers say the idea of producing oxygen in the deep sea remains “exciting” and that further study is needed into the phenomenon and its potential impact on deep-sea ecosystems.
Sweetman’s research was funded in part by The Metals Company (TMC), a deep-sea mining company that is targeting metal nodules in the Clarion-Clipperton field. Patrick Downs TMC’s Downs said he had “serious concerns” about the findings, adding that his company’s analysis suggested Sweetman’s results were due to outside oxygen contamination. “We intend to write a rebuttal,” Downs said in a statement. New Scientist.
But the findings are likely to strengthen calls for a ban on deep-sea mining, backed by many oceanographers who say their understanding of these regions is still evolving. Paul Dando Researchers from the British Marine Biological Society said the paper reinforced the view among deep-sea scientists that “we shouldn’t mine these nodules until we understand their ecology”.
Sweetman said the discovery isn’t necessarily a “say-tale” move for deep-sea mining, but it could limit mining in places where oxygen production is low, and more research is needed to explore how sediments disturbed by the mining process affect oxygen production, he said.
AI could help us predict the weather more accurately
LaniMiro Lotufo Neto/Alamy
Google researchers have developed an artificial intelligence that they say can predict weather and climate patterns as accurately as current physical models, but with less computing power.
Existing forecasts are based on mathematical models run by extremely powerful supercomputers that deterministically predict what will happen in the future. Since they were first used in the 1950s, these models have become increasingly detailed and require more and more computer power.
Several projects aim to replace these computationally intensive tasks with much less demanding AI, including a DeepMind tool that forecasts localized rainfall over short periods of time. But like most AI models, the problem is that they are “black boxes” whose inner workings are mysterious and whose methods can’t be explained or replicated. And meteorologists say that if these models are trained on historical data, they will have a hard time predicting unprecedented events now being caused by climate change.
now, Dmitry Kochkov The researchers, from Google Research in California, and his colleagues created a model called NeuralGCM that balances the two approaches.
Typical climate models divide the Earth's surface into a grid of cells up to 100 kilometers in size. Due to limitations in computing power, simulating at high resolution is impractical. Phenomena such as clouds, turbulence, and convection within these cells are only approximated by computer codes that are continually adjusted to more closely match observed data. This approach, called parameterization, aims to at least partially capture small-scale phenomena that are not captured by broader physical models.
NeuralGCM has been trained to take over this small-scale approximation, making it less computationally intensive and more accurate. In the paper, the researchers say their model can process 70,000 days of simulations in 24 hours using a single chip called a Tensor Processing Unit (TPU). By comparison, competing models, called X-Shield A supercomputer with thousands of processing units is used to process the simulation, which lasts just 19 days.
The paper also claims that NeuralGCM performs predictions at a rate comparable to or better than best-in-class models. Google did not respond to a request for an interview. New Scientist.
Tim Palmer The Oxford researcher says the work is an interesting attempt to find a third way between pure physics and opaque AI approximations: “I'm uncomfortable with the idea of completely abandoning the equations of motion and moving to AI systems that even experts say they don't fully understand,” he says.
This hybrid approach is likely to spur further discussion and research in the modeling community, but time will tell whether it will be adopted by modeling engineers around the world, he says. “It's a good step in the right direction and the type of research we should be doing. It's great to see different alternatives being explored.”
According to a team of astronomers from the University of Hull, spotting a deepfake is as simple as looking for stars in the eyes. They propose that AI-generated fakes can be identified by examining human eyes in a similar manner to studying photos of galaxies. This means that if the reflections in a person’s eye match, then the image is likely of a real human. If not, it is likely a deepfake.
In this image, the person on the left (Scarlett Johansson) is real and the one on the right is generated by AI. Below their faces are painted eyeballs. The reflections in the eyeballs match in the real person but are inaccurate (from a physical standpoint) in the fake one. Image credit: Adejumoke Owolabi / CC BY 4.0.
“The eye reflections match up for real people but are incorrect (from a physics standpoint) for fake people,” said Prof Kevin Pimblett, from the University of Hull.
Professor Pimblett and his colleagues analysed the light reflections of the human eye in real and AI-generated images.
They then quantified the reflections using a method commonly used in astronomy to check for consistency between the reflections in the left and right eyes.
In fake images, the reflections in both eyes are often inconsistent, while in real images the reflections in both eyes are usually the same.
“To measure the shape of a galaxy we analyse whether it has a compact centre, whether it has symmetry and how smooth it is – we analyse the distribution of light,” Professor Pimblett said.
“We automatically detect the reflections and run their morphological features through CAS (density, asymmetry, smoothness) Gini Coefficient. This is to compare the similarities between the left and right eyeballs.”
“Our findings suggest that there are some differences between the two types of deepfakes.”
The Gini coefficient is typically used to measure how light in an image of a galaxy is distributed from pixel to pixel.
This measurement is done by ordering the pixels that make up an image of a galaxy in order of increasing flux, and comparing the result with what would be expected from a perfectly uniform flux distribution.
A Gini value of 0 is a galaxy whose light is evenly distributed across all pixels in the image, and a Gini value of 1 is a galaxy whose light is all concentrated in one pixel.
The astronomers also tested the CAS parameter, a tool originally developed by astronomers to measure the distribution of a galaxy’s light to determine its morphology, but found it to be useless for predicting false eyes.
“It’s important to note that this is not a silver bullet for detecting fake images,” Professor Pimblett said.
“There are false positives and false negatives, and it doesn’t detect everything.”
“But this method provides a foundation, a plan of attack, in the arms race to detect deepfakes.”
In this new image, the NASA/ESA Hubble Space Telescope focuses its lens on the center of spiral galaxy NGC 3430.
This Hubble image shows NGC 3430, a spiral galaxy about 100 million light-years away in the constellation Cygnus Minor. The color image was created from separate exposures taken with Hubble’s Advanced Camera for Surveys (ACS) in the visible and near-infrared spectral regions. The image is based on data acquired through two filters. Color is produced by assigning a different hue to each monochromatic image associated with an individual filter. Image courtesy of NASA / ESA / Hubble / C. Kilpatrick.
NGC 3430 It is located about 100 million light years away in the constellation Cygnus Minor.
Also known as IC 2613, LEDA 32614 and UGC 5982, the galaxy has a diameter of about 85,000 light-years.
NGC 3430 First discovered It was discovered on December 7, 1785 by German-born British astronomer William Herschel.
“Several other galaxies lie relatively close to this one, just outside the frame,” the Hubble astronomers said.
“One of them is close enough that gravitational interactions could drive star formation in NGC 3430.”
“NGC 3430 is such an excellent example of a galactic spiral that it may be the reason it became part of the sample Edwin Hubble used to define the classification of galaxies.”
“The NASA/ESA Hubble Space Telescope was named after him in 1926. Wrote the paper The project classifies about 400 galaxies according to their appearance: spiral, barred spiral, lenticular, elliptical, and irregular.”
“This easy-to-understand typology was highly influential, and the modern, more detailed systems used by astronomers today are still based on it.”
“NGC 3430 itself is a SAc galaxy, i.e. a spiral galaxy with no central bar and open, well-defined arms,” the researchers added.
“At the time Hubble’s paper was published, the study of galaxies themselves was still in its infancy.”
“Thanks to Henrietta Levitt’s work on Cepheid variables, Hubble had only two years earlier settled the debate over whether these ‘nebulae’, as they were then called, were located within our galaxy or whether they were distant, separate stars.”
“He himself refers to an ‘extragalactic nebula’ in his paper, suggesting that it is outside the Milky Way galaxy.”
“Once it became clear that these distant objects were very different from real nebulae, the highly poetic term ‘island universe’ became popular for a time.”
“NGC 3430 may still seem worthy of this moniker, but today we refer to it and objects like it simply as a galaxy.”
Yellow crystals Elemental Sulfur According to the Curiosity team, the discoveries were made when NASA's Curiosity rover accidentally drove over a rock on May 30, 2024, breaking it apart.
Yellow crystals of elemental sulfur on Mars. Image courtesy of NASA.
Although sulfur may remind you of the smell of rotten eggs, elemental sulfur is odorless.
It forms only under a narrow range of conditions that scientists have not linked to the history of the place.
Curiosity then discovered lots of bright chunks of rock that looked similar to the rock the rover had crushed.
“Finding a rock block made of pure sulfur is like finding an oasis in the desert,” said Dr. Ashwin Vasavada, Curiosity project scientist and a research scientist at NASA's Jet Propulsion Laboratory.
“It can't be there, so now we have to explain it. Discovering strange and unexpected things is what makes planetary exploration so exciting.”
It was one of several Curiosity discovered while driving off-road through a channel in Gediz Canyon, a 5-kilometer (3-mile) groove that runs gently down part of Mount Sharp, where Curiosity has been climbing the base of the mountain since 2014.
The channel was discovered from space years before the rover launched and is one of the main reasons the science team wanted to visit this part of Mars.
Researchers believe the channel was carved out by flows of liquid water and debris, leaving a ridge of rock and sediment stretching for 3.2 kilometers (2 miles) on the mountainside below the channel.
The goal is to better understand how this landscape changed billions of years ago, and while recent clues are helping, there is still much to learn from this dramatic formation.
Since Curiosity arrived in the strait earlier this year, scientists have been studying whether a large pile of rubble that rose from the bottom of the strait was formed by an ancient flood or landslide.
The latest clues from the spacecraft suggest that both played a role: some mountains appear to have been left by powerful flows of water and debris, while others appear to be the result of more localized landslides.
These conclusions are based on the rocks found in the debris middens: while stones carried by water are rounded like river stones, some of the debris middens are littered with more angular rocks that appear to have been deposited by dry avalanches.
Eventually, water seeped into all the material that had settled here.
Chemical reactions caused by water have caused white “halo” shapes to appear on some of the rocks.
Erosion by wind and sand has revealed the shapes of these halos over the years.
“This has not been a quiet period for Mars,” said Dr. Becky Williams, a scientist at the Planetary Science Institute in Tucson, Arizona, and deputy principal investigator for Curiosity's Mast Camera.
“There has been a lot of activity here. We're seeing multiple flows through the channel, including heavy flooding and rocky flows.”
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This article is a version of a press release provided by NASA.
The recent focus in news has been on the progress of artificial intelligence (AI) in the past couple of years. ChatGPT and DALL·E are examples of AI models that many people associate with AI. AI tools are utilized by astronomers to analyze vast data sets, which would be impractical to manually go through. Machine Learning Algorithms (ML) are crucial for categorizing data based on predetermined parameters derived from previous studies. An example of ML usage is in the identification of elusive patterns in sky surveys by astronomers, though the limitations of this method in classifying objects in space are not thoroughly understood.
To address these limitations, a group of scientists led by Pamela Marchand-Cortes at the University of La Serena in Chile tested the capabilities of ML. They used ML models like Rotation forest, Random forest, and Logit Boost to categorize objects beyond the Milky Way galaxy based on their properties. The team aimed to see if ML could accurately categorize objects already manually classified. The challenge was in the dense region of sky obscured by dust in the Milky Way, known as the “Avoidance Zone.” The team’s experiment showed that ML had difficulty in categorizing objects in this challenging area.
The team gathered and analyzed data from X-ray images to manually identify objects and compare ML’s performance. ML correctly identified large objects like galaxies in only a few instances, showcasing its limitations. Despite the potential for ML to assist in studying obscured regions of the universe, the team recommended training AI models with diverse samples to enhance accuracy in future research.
Individual exercise needs can vary based on a variety of factors, including:
Genetic mutations
Our genes play a significant role in how we respond to exercise. Genetic variations impact things like muscle fiber organization, metabolism, cardiovascular fitness, and more. Some individuals may be naturally inclined towards endurance activities, while others may have a genetic predisposition for strength training.
Metabolic rates can differ among individuals due to genetic and physiological factors. Some people have a higher basal metabolic rate, burning more calories at rest. This affects energy expenditure during exercise and determines the type and intensity of exercise necessary for weight management and overall fitness.
Body composition
Changes in body composition can impact how we respond to exercise: individuals with a higher percentage of lean muscle mass may have different strength and endurance levels compared to those with a higher percentage of body fat.
Age
Exercise requirements change throughout life. The growth and development needs of children and adolescents may differ from those of adults and older adults, who may focus more on bone density and functional capacity.
Personal goals
Everyone has their own fitness goals, which should guide their exercise routine. Personal preferences also play a role, with some individuals enjoying group workouts while others prefer solo training.
Activity Levels
What you do between workouts affects your exercise needs and dietary requirements. For instance, those with physically demanding jobs may not need as much exercise as sedentary individuals. Recovery is crucial for muscle growth, with everyone experiencing different recovery times even after the same workout.
Psychological factors
Motivation, stress levels, and mental health can impact exercise preferences and adherence.
Recognizing and embracing these differences is key to creating a tailored exercise program that is effective and sustainable for each individual.
This article addresses the question: “Why do people have such varied exercise needs?”
If you have any questions, please contact us via the email address below.For more information:or message us throughFacebook,Twitter, orInstagram(please include your name and location).
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Two days after Hurricane Beryl struck Texas, Janet and Pamela Jarrett’s Houston home was still without power and a heat watch was in effect.
They spent the evening playing Pamela’s favorite game, Connect 4. All seemed well.
But early the next morning, Janet found Pamela, 64, who is disabled and in a wheelchair, struggling to breathe.
“I could hear her gasping for air and breathing heavily,” Janet said. “It’s something you never forget. It never goes away. I can hear it even when I’m lying down to sleep. It feels like I’m going through it all over again.”
Pamela Jarrett died on July 11 from hyperthermia due to environmental heat exposure. Courtesy of Janet Jarrett
Pamela died on the way to the hospital on July 11. The official cause of death was: Environmental Heat Exposure.
Of the 21 confirmed deaths in Texas from Hurricane Beryl, one-third died the same way: not from typical storm threats like flooding or downed trees, but as a result of extreme heat caused by widespread power outages during and after the storm. Heat indexes, or “feels like” temperatures, rose into triple digits in the days following the storm.
These tragedies highlight how ill-prepared Texas (and much of the rest of the country) is for the increased frequency and intensity of extreme weather events caused by climate change, especially when multiple hazards overlap. The death toll also shows how easily the line can become blurred between one type of deadly environmental hazard and another.
The death toll from Beryl in Texas is expected to continue to rise, and the increase in deaths from heatstroke has led to increased scrutiny of local power company CenterPoint Energy and the state government.
“She didn’t have to die like that,” Janet said of her sister. “I’m angry that I didn’t get a response. I couldn’t call anyone. I’m angry that CenterPoint didn’t do a better job. I’m just angry about the whole thing.”
More than 2 million homes and businesses were affected by power outages caused by Category 1 Hurricane Beryl. CenterPoint said in a statement to NBC News that it would be conducting a “thorough review” of its response to the storm.
“Our condolences go out to the families and friends of those who lost their lives as a result of Hurricane Beryl,” the power company said.
CenterPoint officials insist the company mobilized crews as quickly as possible and did everything in its power to resolve the outage.
Janet Jarrett was forced to go without electricity for a total of nine days, during which indoor temperatures soared to nearly 100 degrees Fahrenheit at night. She spent a week in that heat after her sister died.
Pamela Jarrett sits with her family. Courtesy of Janet Jarrett
Janet said she did her best to keep Pamela cool, using cold rags and taking her outside in her wheelchair when it was windy, but as with most patients with heatstroke, by the time the symptoms became apparent it was too late.
“I didn’t know there was anything really wrong with her,” Jarrett said. “She was talking, she was reacting to everything, she was just normal, so I didn’t realize anything was wrong.”
Jesus Rodriguez, 52, of Houston, also had no idea that anything was wrong with his 78-year-old father, Oscar. On July 10, the third day of the blackout, Jesus went to check on Oscar in the morning, grabbing some water and a cold diet coke from the cooler.
When Jess got home that afternoon, her dad “was lying on his back, almost like he was asleep, but he was breathing heavily,” Jess said. “I didn’t think anything of it, but I tried to wake him up, but he wouldn’t wake up. That’s when I called 911.”
Oscar died that day at Memorial Hermann Greater Heights Hospital in Houston. Jess described her father as a healthy man for his age and a devoted family man.
There have been power outages during previous storms, but never for more than two days.
“This was definitely the worst,” Jesus said. “It took almost a week and a half to get the electricity restored.”
He blamed CentrePoint for being slow to respond and for not communicating well enough.
“If they had said, ‘We can’t get to your house in a week and a half,’ I might have been able to send my father somewhere else,” Jesus said.
Three Houston-area hospitals reported a significant increase in emergency room visits due to the post-storm heat.
Dr. Ben Saldana, associate medical director at Houston Methodist Hospital, said the hospital has seen its highest number of emergency room visits since the 2021 Texas cold snap.
“On the day of the storm, our emergency department saw almost double the normal volume of patients,” Saldana said, adding, “We’re not back to normal yet.”
Doctors at the hospital said they have linked health issues in 525 patients to the effects of heat since the Fourth of July.
Even those whose lives were not in danger from the heat described the harsh conditions caused by the power outages.
Deja McClendon of Humble, Texas, was without power for six days and had been shuttling between her apartment, her boyfriend’s mother’s apartment, and a hotel to escape the heat. She said the chaos had forced her to take time off work.
“Texas is something else when it comes to the heat,” McClendon said, adding, “It was very stressful having to move around so much.”
Talulah Christie, who is five months pregnant, was without power for five days in Conroe, Texas, which is served by Entergy Texas. She said the outages after Beryl were the worst she could remember.
“I tried to endure [the heat] “After the first two days, and then the second night, I knew this was becoming a medical issue. I couldn’t stay here,” she said. But she and her husband couldn’t find an affordable hotel room nearby, so they stayed.
Texas Governor Greg Abbott has called for an investigation into CenterPoint’s response after the hurricane, but he has himself faced criticism for being on an economic development trip to Asia when the storm made landfall.
The utility has also been blamed by Democratic Rep. Sylvia Garcia of Texas, whose district saw several heatstroke deaths after Hurricane Beryl.
“The extreme heat exacerbated the public health crisis because CenterPoint failed to quickly restore power,” she said in a statement to NBC News.
Janet Jarrett said she hopes preventative measures are taken to prevent others from suffering preventable losses.
“This should never have happened. We had so many plans and they took it all away from her,” Jarrett said. “And now I’m burying her.”
The Tanimbar Islands are one of the main island groups of Wallacea (a group of mainly Indonesian islands separated from the Asian and Australian continental shelves by deep-sea straits) that was on the early human migration route from Sunda to Sahul (Australia and New Guinea). Despite their geographic importance, the group has not been thoroughly archaeologically explored. Now, archaeologists from the Australian National University have found the first evidence of Pleistocene human occupation in the Tanimbar Islands, dating back about 42,000 years ago.
Map of Walesia showing Birdsel's north and south migration route. The map also highlights the oldest Pleistocene sites on each island. On the north route, the following sites are highlighted: 1) Reang Karampuang, Reang Tedonggae, Reang Bulu Sipong 4, 2) Goa Topogaro, 3) Reang Saru, 4) Deo 2, 5) Goro, 6) Kero 6. On the south route, the following sites are highlighted: 7) Liang Bua, 8) Rua Meko, 9) Makupan, 10) Laili, 11) Ashitau Kuru, Rene Hara, Macha Kuru 2, 12) Hia Soloto Entapa, 13) Erivavan. The last two sites represent a connection to Sahul. 14) Reang Lemdub is now in the Aru Islands but was once connected to the mainland during the Pleistocene. 15) Majedbebe is the oldest known site in Sahul. Image credit: Kaharuddin others., doi: 10.1016/j.quascirev.2024.108834.
The Tanimbar Islands are located at the easternmost tip of Southern Wallacea.
About 250 km east of Tanimbar lie the Aru Islands, which were part of the Sahul mainland during the Pleistocene low sea level period.
Although geographically close to the Sahul continental shelf, the Tanimbar Islands have remained permanently isolated by an ocean barrier since the first human settlement on Wallacea and even before that.
Compared to neighbouring islands closer to the Sahul Shelf, such as Halmahera, Seram and Gebe in the north, and Timor, Rote and Kisar in the south, the Tanimbar Islands have received relatively limited archaeological attention.
“This is particularly significant as it was found in Erivavan in the Tanimbar Islands of Indonesia,” said Hendri Kaharuddin, a doctoral student at the Australian National University.
“Taninbar lies just offshore from the Sahul Shelf, which includes present-day Australia and New Guinea.”
“The question of how our early ancestors got there from Southeast Asia is one of the most intriguing of prehistoric migrations, mainly because of the long distances involved and the need for advanced navigation techniques.”
“There have been two main routes that have been explored as possibilities since the mid-20th century: a northern route through islands such as Sulawesi, and a southern route passing near Timor and the Tanimbar islands.”
“This discovery represents one of the oldest sites on the southern route and is an important piece of the puzzle.”
Although much remains unknown about Erivavan's first inhabitants, the perilous nature of the sea crossing suggests that the colonists had developed advanced maritime technology by about 42,000 years ago.
“They would have had to cross a body of water over a distance of more than 100 kilometres, regardless of the direction of their travel,” Kaharuddin said.
“Along with small fragments of pottery, evidence of bones, shells and sea urchins was also found, indicating that the island was a centre of early maritime activity.”
“As research continues in less-explored regions like the Tanimbar Islands, we hope to learn more about early human life and migration patterns.”
“It is also clear that the colonization of Sahul was not a single event, but a gradual process involving successive waves of seagoing populations.”
“Coastal communities likely navigated the coastline, exploited marine resources, and built resilient settlements along the way.”
“This island-hopping strategy fostered cultural exchange and adaptation, leading to the formation of diverse societies across the landmass.”
Hendri AF Kaharuddin others2024. Islands on the Brink: 42,000 Year Old Occupation of the Tanimbar Islands and Implications for the Sunda-Sahul Early Human Migration Theory. Quaternary Science Review 338: 108834; doi: 10.1016/j.quascirev.2024.108834
Snake bites affect approximately 1.8 million people annually. The current standard of care is antibody-based antivenom, but it can be difficult to obtain and is generally ineffective against local tissue damage. New research suggests that heparin, a commonly used blood-clotting inhibitor, could be repurposed as an inexpensive antidote for cobra venom.
Zebra snake (Naja Nigrichinta) in Namibia. Image credit: Wolfgang Wüster.
“Our findings have the potential to significantly reduce the horrific necrotic injury caused by cobra bites, and may also slow the release of venom and improve survival rates,” Professor Greg Neely, from the University of Sydney, said.
The authors identified a way to block cobra venom using CRISPR gene editing technology and showed that heparin and related drugs could be repurposed to prevent necrosis caused by cobra bites.
“Heparin is cheap, ubiquitous and listed as an essential medicine by the World Health Organisation,” says Tian Du, a PhD student at the University of Sydney.
“If the human trials are successful, it could be used relatively quickly as a cheap, safe and effective drug to treat cobra bites.”
Using CRISPR, researchers have discovered the human gene required for cobra venom to kill flesh at the bite site.
One of the desired venom targets is an enzyme needed to make heparan and heparin, related molecules produced by many human and animal cells.
Heparan is present on cell surfaces and heparin is released during immune responses, and because of their similar structure, toxins can bind to either.
Scientists have used this knowledge to create an antidote that can stop necrosis in human cells and mice.
Unlike current cobra bite antivenoms, which are 19th century technology, heparinoids act as a “decoy” antidote.
The antidote works by injecting large amounts of “decoy” heparin sulfate or related heparinoid molecules into the bite site, which are able to bind to and neutralize the toxins in the venom that cause tissue damage.
“Our findings are intriguing because current antivenoms are largely ineffective at treating severe, localised poisoning which causes painful, progressive swelling, blistering and tissue necrosis around the bite,” said Professor Nicholas Casewell, from the Liverpool School of Tropical Medicine.
of study Published in the journal Science Translational Medicine.
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Tian Y. Du others2024. Molecular dissection of cobra venom highlights heparinoids as potential antidotes to spitting cobra venom. Science Translational Medicine 16 (756); doi: 10.1126/scitranslmed.adk4802
In March 2020, a night-time curfew was imposed in New Delhi, India, as a preventive measure against COVID-19.
Yawar Nazir/Getty Images
The COVID-19 pandemic may have affected India more severely than previously estimated, with women, certain social groups and younger people experiencing the most severe declines in life expectancy.
Mortality estimates in India during the coronavirus pandemic have been based on official death records. But the lockdown disrupted this system, and already Under-reporting of women and children’s deaths Even before the pandemic, certain information such as caste and ethnicity was not collected. Sangeeta Vyas At Hunter College in New York
So Vyas and his colleagues collected information on mortality in India from the National Family Health Survey, a nation-wide survey that asks participants whether anyone in their household has died in the past four years and, if so, to provide data such as date of death, age, and sex (with only male and female options).
The researchers analyzed data from more than 765,000 participants who completed the survey in 2021. They found that deaths in 2020 were about 17% higher than in 2019. If a similar increase occurred across India, it would amount to about 1.2 million excess deaths in 2020. This is eight times the official number of COVID-19 deaths in India in 2020 and 1.5 times the World Health Organization estimate. QuoteAccording to research.
From 2019 to 2020, life expectancy across the entire sample fell by more than 2.5 years. 1.5 Years of Decline During the same period in the United States, changes in life expectancy also varied by sex, age, and social group.
For example, mortality rates fell by about three years for women and just over two years for men. This contrasts with global trends that show that men have experienced a larger increase in mortality than women during the COVID-19 pandemic. “These peculiar patterns in India are likely to be explained, at least in part, by gender inequality,” Vyas says.
preliminary survey In Indian households, women spend less on healthcare compared to men, and the pandemic may have exacerbated these existing disparities, it said. Riddhi Kashyap Oxford University researchers who co-authored the study say strict lockdowns could hinder access to obstetric care and increase obstetric mortality.
Unlike other countries, the decline in life expectancy observed in the study was mainly due to premature deaths: rising mortality rates among women and girls under 20 contributed about one year to the decline in life expectancy in 2020, roughly the same as the number of deaths among women aged 60 to 79.
“We believe the rise in mortality is stemming from indirect effects of the lockdown in India,” Vyas said, which could include disruptions to access to childhood vaccines and treatment for tuberculosis, a leading cause of death in the country.
There were also large differences between social groups: high-caste Hindus saw their life expectancy fall by 1.3 years, while Muslims and people belonging to lower castes saw their life expectancy fall by 5.4 and 2.7 years, respectively.
Public health experts have long been aware of health disparities in India, but the findings highlight the magnitude of those disparities, Vyas said. “Knowing how different populations are affected differently is important for crafting policy responses,” she said.
But the study had limitations. Due to disruptions during the lockdown, survey respondents came from only 14 of India’s 36 states and union territories, making the sample demographically representative of only about a quarter of India’s population. The study also didn’t look at causes of death. “We can only speculate as to why there are these patterns,” Kashyap says. “But we can’t say for sure what’s causing them.”
While the number of fires so far is typical for this time of summer, the extreme heat of early summer has dried out the land, increasing the risk of wildfires and casting a major doubt over what had seemed a relatively bright season.
“Wildfire conditions across the West continue to worsen and unfortunately will get worse,” Daniel Swain, a climate scientist at the University of California, Los Angeles and the National Center for Atmospheric Research, said at a briefing on Thursday. “The past 30 days have been the warmest on record across a significant portion of California and the West.”
Flames from the Thompson Fire in Oroville, California, on July 2. Tayfun Coskun/Anadolu via Getty Images file A vehicle is engulfed in flames during the Thompson Fire in Oroville, California on July 2nd. Ethan Swope/AP Files
After California experienced two consecutive wet winters, the National Association of Fire Agencies had predicted moderate fire activity in the state this summer and fall. This month's seasonal forecast has been revised upwards.He said the grass that had grown tall during the rainy weather had bounced back quickly with the heat.
“You know, we've had two really great winters where the atmospheric river came in and saved California from drought, but the tradeoff is that now we have a ton of grass and shrubs that are dead and ready to burn,” said Caitlin Trudeau, a senior scientist at nonprofit research organization Climate Central.
Debris of buildings and vehicles are left behind as the Apache Fire burns in Palermo, California, on June 25. Ethan Swope/AP Files Firefighters work to put out the growing Post Fire in Gorman, California on June 16. Eric Thayer/AP File
Swain said recent outbreaks of “dry lightning” – thunderstorms that don't produce rain – were of particular concern because long-range forecasts showed another heat wave hitting the region in late July, which could exacerbate existing fires.
A recent analysis from satellite monitoring company Maxar suggests that soil moisture levels in California dropped sharply from early June through July 15, while temperatures over the same period were about 5 degrees Fahrenheit warmer than in 2020.
That year, it was June in California. Drought outlook and wildfire risk profile similar to this year. after that, More than 10,000 lightning strikes hit California Dozens of fires broke out over a three-day period in mid-August. Fueled by a heat wave, many of these fires grew rapidly and eventually evolved into three complex fires. One of these, the August Complex Fire, primarily affected the Mendocino National Forest and burned more than one million acres.
A total of 33 people have died in California's 2020 wildfires and scorched 4.5 million acres.
“It's really concerning to see these statistics because we're only halfway through July, and the last major thunderstorms of 2020 were in August,” Trudeau said of the data early this year. “We're already starting to see dry thunderstorms. We still have a long way to go to close out the year.”
Across the U.S., more than 1 million acres have burned so far this year, with 54 major fires currently under containment, according to the National Joint Fire Center.
Wildfire season is off to an early and active start in the Pacific Northwest, particularly in Oregon, with several large blazes burning in remote areas.
Smoke rises from a wildfire near La Pine, Oregon on June 25. Kyle Kalambach/Deschutes County Sheriff's Office via AP File
Being a neuroscientist comes with a unique occupational hazard of existential anxiety. The more we uncover about perception, cognition, decision-making, and behavioral selection, the more we are faced with the realization that it’s all mechanical. Everything we think of as heart-driven decisions may simply be the result of a machine’s workings.
How can we claim to choose when the process is just a collection of mechanical cogs turning? Who truly bears responsibility?
Modern technology allows us to witness these metaphorical gears in motion. By tracking neural activity in different circuits and brain regions through neuroimaging tools, we can understand the cognitive operations behind decision-making and behavior.
Listen here:
Read the full interview with Kevin Mitchell here Instant genius. Bite-sized masterclasses in podcast format by the BBC Science Focus team.
Patterns of neural activity can correspond with evidence accumulation, certainty levels, confidence, goal adoption, rewards, learning, emotional signals, habit formation, and real-time behavioral adjustments. It’s like witnessing thought in action.
In some cases, we can even predict behavior onset before an individual acts. Research setups using rodents or monkeys reveal brain activity patterns anticipating behavior thresholds and even predicting future actions.
Experiments with humans, like those by Benjamin Libet in the 1980s, have shown brain activity leading movement occurring before conscious awareness of the decision. These findings challenge the notion that our conscious mind controls behavior, suggesting a more complex underlying mechanism.
External intervention in neural mechanisms can influence behavior patterns. Studies with patients undergoing brain surgery by Wilder Penfield showed how stimulating different brain areas can evoke sensations, emotions, memories, and movements, highlighting the intricate control system within us.
Read more:
Optogenetics in animals enables researchers to activate specific neurons and study real-time behavior effects. Understanding the cognitive mechanisms behind actions, memories, decision-making, and options weighing provides a deeper insight into behavior control.
This shift towards understanding the brain as an essential part of the decision-making process challenges our perception of choice and control. As we delve deeper into the neural mechanics, we question the concept of free will and autonomy.
Huge in scale and ambition, ITER is a €20 billion energy project being built in the south of France that will pave the way for nuclear fusion power similar to the sun’s energy source.
The world’s largest nuclear fusion experiment was launched in 2006 by an international effort involving the European Union, the United States, China, and Russia. The reactor’s first operation, which will create an extremely hot substance called plasma (the conditions needed for nuclear fusion), is scheduled for 2020. The plan was initially postponed to 2025, and new delays have now pushed it to 2035.
on the other hand, Enrico Sacchetti It offers a glimpse into ITER’s construction and potential.
The main image shows the 30-metre deep dimensions of the tokamak’s assembly pit, a device that uses magnetic fields to confine swirling plasma inside a doughnut-shaped torus: Above is a shot of one of the toroidal coils that generate these magnetic fields.
The image below shows some of the nine sectors that make up the ITER vacuum vessel, which weighs 5,200 tonnes and acts as an extremely durable “cage” for the experiments, keeping the continuously swirling plasma from touching its walls.
The top image shows part of the vacuum vessel being transported for repair, while the bottom photo shows the supports that line the back of the blanket module’s wall, which protects the structure and magnets from the heat and high-energy neutrons of the reaction.
A large number of Microsoft Windows computers around the world today were found to be unable to boot, instead displaying the so-called “Blue Screen of Death” (BSOD), among the computers reportedly affected, with the UK’s Sky News ceasing live broadcasts just before 6am local time, as well as causing outages for a number of airline and banking services.
What’s happening on my Windows computer?
Some users have reported that their Windows devices are refusing to boot up, while others have witnessed their computers suddenly display a BSOD while in use.
Eddie Major of the University of Adelaide in Australia…
It is widely known that excessive alcohol consumption is detrimental to health, a fact that has been established by scientific research over many years.
Despite this, there is still much to learn about the effects of alcohol on the body and whether consuming small amounts of certain types of alcohol may have potential benefits.
New research is shedding light on how alcohol impacts the body and accelerates the aging process, particularly at a cellular level that determines biological age.
Unlike chronological age, which simply counts the number of years someone has lived, biological age assesses cellular function and disease risk. Two key indicators of biological age, telomere length, and epigenetic age, provide evidence of the harmful effects of alcohol consumption on the body.
Drinking alcohol increases the risk of DNA damage
Telomeres are essential components of our genetic structure, protecting chromosomes from damage during cell replication. Over time, telomeres naturally shorten as cells divide. Shortened telomeres are associated with age-related diseases such as Alzheimer’s, cancer, and heart disease.
Research conducted by Anya Topiwala and her team at Oxford University in 2022 found that excessive alcohol consumption leads to a reduction in telomere length, accelerating the biological aging process.
Observational studies have shown that consuming 29 or more units of alcohol per week can result in a 1-2 year change in telomere length compared to drinking less than six units per week. Individuals with alcohol use disorders were found to have even shorter telomeres.
The exact mechanism by which alcohol shortens telomeres is not fully understood, but it is believed to be related to oxidative stress caused by alcohol consumption.
Certain types of alcohol are bad for you
Epigenetic age, which assesses DNA methylation linked to aging using multiple biomarkers, indicates the impact of lifestyle choices on biological age. Studies have shown that cumulative alcohol exposure increases biological age, with liquor drinkers being at a higher risk of premature aging compared to beer or wine drinkers.
Further research is being conducted to better understand the connection between alcohol consumption and biological aging, as the specific reasons behind these effects are not fully clear.
Can biological age be reversed?
While biological aging is theoretically reversible, the practical methods to achieve this reversal are not yet established. Scientists believe that by addressing environmental factors and lifestyle choices that impact DNA function, it may be possible to slow down the aging process.
Quitting or reducing alcohol consumption has been shown to slow down biological aging. Both studies emphasize that moderate drinking does not have any protective effects and that increased alcohol consumption accelerates the aging process.
About our experts
Anya Topiwala: A psychiatrist at Oxford University, Topiwala’s research focuses on the impact of alcohol consumption on brain health using large datasets and advanced imaging techniques.
Hou Li-Fan: A Professor of Preventive Medicine at Northwestern University, Dr. Hou’s research integrates epidemiological methods with molecular technologies to identify molecular markers and understand their role in disease prevention.
Have you heard of the carnivore diet? It’s a new trend that takes low-carb dieting to the extreme by eliminating all plant foods and only consuming animal-derived foods like meat, fish, animal fats, and dairy products. Proponents claim that plant toxins and agricultural practices used in plant-based foods can harm our health, and suggest that eliminating sugar by cutting out plant foods can promote weight management and metabolic health.
While there is no scientific evidence on the health effects of the carnivore diet, anecdotal reports suggest benefits like improved weight management, cardiac and metabolic health, cognitive function, reduced inflammation, improved digestion, and even resolution of autoimmune diseases. However, side effects such as bad breath, constipation, and headaches may occur initially.
Nutritionally, animal-based foods provide high-quality proteins, essential vitamins like B12, iron, zinc, selenium, and other nutrients. However, the lack of fiber from fruits, vegetables, nuts, and grains in a carnivore diet may raise concerns for long-term gut and heart health. Scientific studies have shown the benefits of plant foods in reducing the risk of diseases like cardiovascular disease, diabetes, and cancer, while high intake of red and processed meats can increase risks.
Proponents of the carnivore diet argue that it aligns with early human diets, but biological evidence suggests that humans evolved as omnivores who consumed both animals and plants. Transitioning to more sustainable and healthy food systems that consider the health of the planet is crucial, and excessive meat consumption may not support this goal. Ultimately, the choice to follow a carnivore diet may have long-term health implications and ethical considerations.
This article was first published on December 5, 2022.
Using data from the European Southern Observatory's Very Large Telescope (VLT) and other telescopes, astronomers have found evidence of an intermediate-mass black hole. IRS 13a dusty group of stars within the nuclear cluster of our Milky Way galaxy.
Intermediate-mass black holes can form in dense star clusters, either through the merger of stellar-mass black holes or the collapse of very massive stars. Image credit: Sci.News/Zdeněk Bardon/ESO.
Black holes are found in a wide range of masses, from stellar-mass objects with masses of 10 to 100 times that of the Sun, to objects at the centers of galaxies with masses over 100,000 times that of the Sun.
However, there are only a few intermediate-mass black hole candidates between 100 and 100,000 times the mass of the Sun.
“The IRS 13 cluster is located 0.1 light-years away from the centre of our galaxy,” said Dr Florian Peisker from the University of Cologne and his colleagues.
“I noticed that the stars in IRS 13 were moving in an unexpectedly orderly pattern.”
“They actually expected the stars to be randomly positioned.”
“Two conclusions can be drawn from this regular pattern,” they added.
“Meanwhile, IRS 13 appears to be interacting with Sagittarius A*, a black hole at the centre of the Milky Way that is four million times more massive than the Sun, which leads to the orderly motion of stars.”
“However, something else needs to be present inside the cluster to maintain the observed compact shape.”
Using data from the VLT, the Atacama Large Millimeter/submillimeter Array (ALMA), and NASA's Chandra X-ray Telescope, astronomers have found strong evidence that IRS 13 has a disk-like structure.
“Multi-wavelength observations suggest that the reason for IRS 13's compact shape could be an intermediate-mass black hole located at the center of the cluster,” the researchers said.
“We were able to observe characteristic x-rays and ionized gas rotating at hundreds of kilometers per second in the disk surrounding the suspected intermediate-mass black hole.”
“Another indication of the presence of an intermediate-mass black hole is the unusually high density of this cluster, which is higher than the density of any other cluster in our Milky Way galaxy.”
“IRS 13 appears to be an essential component in the growth of the central black hole, Sagittarius A*,” Dr Peisker said.
“This fascinating star cluster has continued to astonish the scientific community since its discovery almost 20 years ago. It was initially thought to be an unusually massive group of stars, but high-resolution data have now allowed us to confirm its component parts, with an intermediate-mass black hole at its center.”
Europa and Enceladus are important targets for the search for evidence of extraterrestrial life in the solar system. However, the surfaces and shallow subsurfaces of these airless icy moons are constantly exposed to ionizing radiation that can degrade chemical biosignatures. Therefore, sampling the icy surfaces in future life-searching missions to Europa and Enceladus requires a clear understanding of the required ice depths where intact organic biomolecules may exist. A team of scientists from NASA and Pennsylvania State University conducted experiments exposing individual biological and abiotic amino acids in the ice to gamma radiation to simulate conditions on these icy worlds.
Europa's surface stands out in this newly reprocessed color image. The image scale is 1.6 km per pixel. Europa's north side is on the right. Image courtesy of NASA / JPL-Caltech / SETI Institute.
“Based on our experiments, a 'safe' sampling depth for amino acids on Europa is about 20 centimetres (8 inches) at high latitudes in the trailing hemisphere (the hemisphere opposite the direction Europa moves around Jupiter), in an area where the surface has not been significantly disturbed by meteorite impacts,” said Dr. Alexander Pavlov, a research scientist at NASA's Goddard Space Flight Center.
“Detecting amino acids on Enceladus does not require subsurface sampling; these molecules survive radiolysis (breakdown by radiation) anywhere on Enceladus' surface, within a few millimeters (tenths of an inch) of the surface.”
Dr. Pavlov and his colleagues used amino acids in their radiolysis experiments as representative examples of biomolecules on icy moons.
Amino acids are produced by both living organisms and non-living processes.
But if certain types of amino acids were found on Europa or Enceladus, they could be a sign of life, as they may be used by life on Earth as building blocks of proteins.
Proteins are essential for life because they are used to create structures and to produce enzymes that speed up or control chemical reactions.
Amino acids and other compounds found underground in the ocean could be transported to the surface by geyser activity or the slow churning motion of the ice shell.
To assess the survival of amino acids on these planets, the researchers mixed amino acid samples with ice cooled to minus 196 degrees Celsius (minus 321 degrees Fahrenheit) in sealed, airless vials and exposed them to various doses of gamma rays (a type of high-energy light).
Because the ocean may harbor microorganisms, the researchers also tested the viability of amino acids contained in dead bacteria in the ice.
Finally, the researchers tested samples of amino acids in the ice mixed with silicate dust to see if meteorites or interior materials could be mixing with the surface ice.
This experiment provided vital data for determining the rate at which amino acids break down (called the radiolysis constant).
Using these, the scientists used the age and radiation environment of the icy surfaces of Europa and Enceladus to calculate drilling depths and where 10% of amino acids would survive radiolysis.
While experiments have been done before to test for the survival of amino acids in ice, this is the first to use low doses of radiation that don't completely break down the amino acids – changing or breaking them down would be insufficient to determine whether they were a sign of life.
This is also the first experiment to use Europa/Enceladus conditions to assess the survival of these compounds in microbes, and the first to test the survival of amino acids mixed with dust.
Scientists have found that amino acids break down faster when mixed with dust, but more slowly when they come from microorganisms.
“The slow rate of breakdown of amino acids in biological samples under surface conditions like those on Europa and Enceladus strengthens the case for future life detection measurements from lander missions to Europa and Enceladus,” Dr Pavlov said.
“Our results indicate that the decomposition rates of potential organic biomolecules are higher in the silica-rich regions of both Europa and Enceladus than in pure ice. Future missions to Europa and Enceladus should therefore be careful when sampling the silica-rich regions of these icy moons.”
“A possible explanation for why amino acids survive longer in bacteria is the way that ionizing radiation alters molecules, either directly by breaking chemical bonds or indirectly by creating nearby reactive compounds that alter or break down the target molecule.”
“It's possible that the bacterial cellular material protected the amino acids from reactive compounds produced by the radiation.”
Alexander A. Pavlov others2024. Effects of radiolysis on biological and abiotic amino acids in shallow subsurface ice on Europa and Enceladus. Astrobiology 24(7); doi: 10.1089/ast.2023.0120
This article has been edited based on the original NASA release.
A team of Chinese scientists has assembled a reference genome from telomere to telomere. Korean ginseng (Korean ginseng)A representative of traditional Chinese medicine.
Overview of morphological characteristics of Korean ginseng (Korean ginseng). Image credit: Song others., doi: 10.1093/hr/uhae107.
Ginseng is one of the most important medicinal plants and is cultivated in Northeast Asia, including China, Korea, Siberia, and Japan, and in smaller quantities in North America.
As recorded in the ancient Chinese text Shennong Benmatao Jing, the perennial root of ginseng has been used for thousands of years in traditional medicine and as a functional food and beverage with bodily and immune-boosting properties.
Ginseng has a very long history of being collected from the wild in fields, and cultivation began about 500 years ago. Since then, selective breeding has begun and cultivated varieties have become common.
“Like other herbs, medicinal ginseng has complex metabolites that are believed to be active compounds, of which triterpene saponins (ginsenosides) are the most important class,” said Wei Li, PhD, of the Shenzhen Institute of Agricultural Genomics, Chinese Academy of Agricultural Sciences, and colleagues.
“Ginseng probably contains more than 100 types of ginsenosides, but the synthesis pathways of most of the ginsenosides remain unknown.”
In the new study, Dr. Lee and his co-authors assembled a ginseng reference genome from telomere to telomere.
“We used this intertelomeric reference genome to study the phylogeny and evolution of ginseng and to explore the asymmetric loss and biased expression of genes among its subgenomes,” they explained.
The authors identified 77,266 protein-coding genes in the 3.45 Gb ginseng genome.
The team also identified asymmetric gene loss and biased gene expression across the subgenomes, tracing the divergence back approximately 6.07 million years.
Their analysis revealed extensive expansion of gene families related to saponin biosynthesis and highlighted the importance of specific gene duplications in enriching these pathways.
Comparative genomic analysis with related species will provide further insight into the evolutionary strategies employed by ginseng to maximize its medicinal properties.
“The complete sequencing of the ginseng genome is a monumental achievement in plant research,” Dr Lee said.
“Not only will it broaden our understanding of the genetic complexity of medicinal plants, but it will also introduce sophisticated methods for cultivating ginseng varieties with superior health properties.”
“Comprehensive sequencing of the ginseng genome has laid the foundation for precision breeding techniques aimed at enhancing its medicinal properties.”
“This research not only has immediate applications in the intensification of ginseng cultivation, but also serves as a model for studying other medicinal plants, potentially revolutionizing pharmacology and crop intensification strategies with natural products.”
of result Published in the journal Horticultural Research.
_____
Song Yi-ting others2024. Telomere-to-telomere reference genome Korean ginseng Our focus is on the evolution of saponin biosynthesis. Horticultural Research 11 (6): uhae107; doi: 10.1093/hr/uhae107
The current definition, established by the International Astronomical Union in 2006, states that to be considered a planet, an object must be in the solar system and orbit the Sun. However, this definition is problematic in that it is not quantitative and excludes exoplanets. A proposed new definition states that an object can orbit one or more stars, brown dwarfs, or stellar remnants, and sets a mass limit that should apply to any planet.
Artist's impression of an exoplanet and its host star. Image courtesy of Sci.News.
In 2006, the International Astronomical Union (IAU) adopted Resolution B5, which defines a planet as a celestial body that (a) orbits the Sun, (b) has sufficient mass so that its own gravity overcomes the forces of a rigid body, has a shape in hydrostatic equilibrium (approximately circular), and (c) is swept around its orbit.
“The current definition specifically mentions orbiting the sun,” said Professor Jean-Luc Margot of the University of California, Los Angeles.
“Thousands of planets are currently known to exist, but the IAU definition only applies to planets in our solar system.”
“We propose a new definition that can be applied to objects orbiting any star, stellar remnant, or brown dwarf.”
Prof Margot and his colleagues argue that the requirement to orbit the Sun is too specific, while other criteria in the IAU definition are too vague.
For example, it says that the planet has “gone out of orbit,” but doesn't say what that means.
The proposed new definition includes quantifiable criteria that can be applied to define planets inside and outside the solar system.
Under the new definition, a planet is (a) an object that orbits one or more stars, brown dwarfs, or stellar remnants; (b) a mass greater than or equal to 10twenty three kg, (c) is 13 times the mass of Jupiter (2.5 × 1028 kg).
The authors ran mathematical algorithms on the properties of objects in the solar system to determine which ones are densely populated.
This analysis reveals groups of distinct properties common to planets in our solar system, which can be used as a starting point for creating a general classification of planets.
For example, if an object's gravitational force is sufficient to accumulate or eject smaller objects nearby to clear a path, the object is said to be dynamically dominant.
“All planets in the solar system are dynamically dominated, but other objects, including dwarf planets like Pluto and asteroids, are not, so this property can be included in the definition of a planet,” Prof Margot said.
Dynamic dominance requirements dictate a lower mass limit.
But it's also possible that the potential planet is too large to fit the new definition.
For example, some gas giants can grow so large that thermonuclear fusion of deuterium occurs, and the object becomes a star known as a brown dwarf, no longer a planet. This limit has been determined to be more than 13 Jupiter masses.
On the other hand, the current requirement that it be spherical is more problematic.
Distant planets are rarely observed in enough detail to determine their shapes with certainty.
The researchers argue that even though planets are generally round, the shape requirements would be so difficult to implement that they are virtually useless for definitional purposes.
“Fixing the definition to mass, the quantity that is most easily measured, eliminates debate about whether a particular object meets the criteria – this is a weakness of the current definition,” said Dr Brett Gladman, a researcher at the University of British Columbia.
“The good news is that in the solar system,twenty one kg looks round.”
“Thus, any object that meets the proposed lower mass limit of 10twenty three kg is expected to be spherical.”
Team paper Published in Planetary Science Journal.
People demonstrate outside the UK COVID-19 Inquiry site in London in October 2023.
Adrian Dennis/AFP via Getty Images
“The UK prepared for the wrong pandemic” This is the key conclusion from the first part of a government inquiry looking at the UK's response to the COVID-19 pandemic, in particular its preparedness and resilience.
“In 2019, it was widely believed, both in the UK and abroad, that the UK was not only well prepared to deal with a pandemic, but one of the best-prepared countries in the world. This belief proved dangerously wrong.” Heather HallettThe former judge leading the UK's coronavirus inquiry Video Statement Released at the same time Reports“The reality is that the UK was ill-prepared.”
“I have no hesitation in saying that the processes, plans and policies of the UK-wide civil emergency response arrangements have let down the people of all four countries,” Mr Hallett said. “There were serious errors on the part of the government and serious failings in the civil emergency system. This cannot be allowed to happen again.”
The main reason the UK was unprepared was because it planned on the assumption that the pandemic would be caused by a dangerous influenza strain or something similar, the report concluded, “which resulted in risk assessments being narrowly limited, excluding other types of pandemics.”
The next biggest mistake was assuming that because influenza spreads easily from person to person, there would be no way to stop the spread of a pandemic pathogen. “Plans were focused on dealing with the effects of the disease rather than preventing the spread of the disease,” the report said.
As a result, at the start of the COVID-19 pandemic, there were no plans to implement measures such as border controls, lockdowns, testing people or contact tracing to identify people who may have the coronavirus and stop them from infecting others.
“There was no preparation whatsoever for the fact that hygiene measures at the border might be necessary to protect the population,” the former health minister said. Matt Hancock Part of the problem, the inquiry said, is that because responsibility for health measures has been devolved between England, Scotland, Wales and Northern Ireland, it is not clear who can implement such measures.
The UK government also did not consider the possibility of a lockdown being necessary: ”There was no plan to introduce a lockdown.” Mark Woolhouse “Lockdowns were an ad-hoc public health intervention devised in real time in the face of a rapidly evolving public health emergency,” researchers from the University of Edinburgh in the UK said in a study.
Testing and tracing was envisioned as part of any response to new pathogens, but the capacity to do so was limited because it was assumed that any new infectious diseases would only have a small number of cases.
“One of the first lines of defence against a pandemic is containment, and this requires a test, trace and isolate system that can be rapidly expanded to meet the demands of a large outbreak,” Mr Hallett said. “This did not exist in the UK when the COVID-19 pandemic began.”
“The UK government's only pandemic plan, developed in 2011, was outdated and inadequate,” she said. “The UK government never applied or adapted it, and the principles on which it was based were ultimately abandoned, along with the 2011 strategy itself.”
The report does not explore the consequences of those failures, but a summary released with the report states that “further preparations could have avoided some of the enormous financial, economic and human costs of the COVID-19 pandemic.”
The inquiry will also look into decision-making and political governance in Westminster, Scotland, Wales and Northern Ireland, the impact on health systems across the UK, vaccines, medicines, anti-viral treatments, government procurement and PPE. [personal protective equipment]; the care sector, test and trace, the impact on children and young people, and the Government's business and finance response.
The latest report quoted a civil servant as saying: Chris Wormald “There's been a lot of discussion, of course, about countries like South Korea, who handled COVID very well. In fact, they had much higher standards of containment than we did, and that was a key difference.”
One of the aims of the review is to help the UK better prepare for the future. “The evidence overwhelmingly suggests that another, more infectious and deadly pandemic is likely in the near to medium term,” Hallett said. “This means that the UK will face another pandemic – one that, unless we prepare better, will cause untold suffering and huge economic loss, with the most vulnerable in society suffering the most.”
“This is a most urgent report because we are still not fully prepared for the next pandemic.” Duncan Robertson Loughborough University, UK Post to X.
National Aeronautics and Space Administration (NASA)
NASA has announced that a completed rover scheduled for launch to the moon next year will be dismantled due to budgetary issues, leading researchers to question whether the space agency is really committed to landing a crewed spacecraft on the moon in 2026 as it currently claims.
The Volatile Investigation Polar Rover (VIPER) would be sent to the moon’s south pole in September 2025 to search for water ice. The rover, equipped with a drill, would search for subsurface ice in several locations on the moon, including in craters that are permanently in shadow.
But on July 17, NASA announced it was canceling the mission. “Decisions like these are never easy,” Nicola Fox, associate administrator for NASA’s Science Mission Directorate, said in a statement. “But in this case, VIPER’s remaining projected costs would have forced us to cancel or terminate many other missions, so we have made the decision to abandon this particular mission.”
NASA has already spent $450 million on the rover, and canceling it is expected to save only $84 million. NASA says it welcomes “expressions of interest from U.S. industry and international partners” to purchase VIPER, but if this does not occur by August 1, VIPER will be dismantled with the aim of reusing its parts for future missions.
Phil Metzger Metzger of the University of Central Florida said canceling the mission would be a “huge mistake” for NASA, especially since the space agency has ambitious goals of landing humans on the moon’s south pole in 2026 as part of its Artemis program. It could also jeopardize plans to use lunar ice as a source of rocket fuel. “The rover with the drill is an absolutely essential part of the mission,” Metzger said. “It would definitely have some impact on plans for a human mission.”
The cancellation of VIPER could also give China an advantage in lunar resource exploration: The unmanned probes Chang’e-7 and Chang’e-8, scheduled for 2026 and 2028, respectively, are set to head to the lunar south pole to search for water ice.
Grant Tremblay Researchers at the Harvard-Smithsonian Center for Astrophysics said the cancellations highlight the budgetary challenges facing NASA and other U.S. government agencies, which have Funding is down 8.5% this year The funding came in just under $25 billion, less than the requested amount. “This is a perfect example of how tight the budget is across the board at NASA,” Tremblay said. “NASA can’t print money.”
Other NASA missions, including the Chandra X-ray Observatory and the Mars Sample Return mission, which would bring rocks from Mars, are also facing cuts or cancellations due to shrinking budgets. “More bad news is sure to follow,” Tremblay said.
“Academics are often accused of ‘obsessing over the details,'” David Taylor told Feedback magazine. “This year my team and I have managed to do just that. We have built a machine that can literally split a single hair from end to end. This is the first time that anyone has been able to split a hair in a lab in a controlled environment and quantify the phenomenon. Were you planning any exciting beauty treatments like coloring or curling your hair? You’ll have to wait and see if this will cause split ends.”
This is based on research done in the 1980s by Y. K. Kamath and H.-D. Weigman, who sought to take a closer look at what happens when a hair splits.
in Journal of Applied Polymer Science “Fractographic analysis of human hairKamath and Weigman calmed their excitement and stated, “Electron microscopic evidence suggests that fracture propagation occurs via secondary cracks generated as a result of stress concentrations that build up around the primary crack.”
Water from the wreckage
Brazilian researchers have been searching outside the cemetery for the remains of people buried there. Their main question is whether the decaying bodies are sending a foul stench into the area’s deep groundwater. Elias Saba and his colleagues have summed it all up in a book with a macabre, geeky title: “The Deadly Sinisters: The Secrets of the Dead.”Assessing the impact of cemeteries on groundwater using multivariate analysis” “.
The team collected data from three “monitoring wells” dug at the cemetery and compared it with data from the local sewer company about water in nearby household cisterns. Multivariate analysis provided both good and not-so-good news.
The researchers explain that the soil, both inside and outside the cemetery, absorbs most of the problematic waste from the bodies, “preventing surface contaminants from reaching the aquifer.” That’s a good thing. But the problem is that water samples taken in areas outside the cemetery do not meet Brazil’s drinking water standards.
Grandma drinking alcohol
Ancestral water resources are not a new issue. Perhaps the most attention on this issue came in 2008. Journal of Environmental Health.
Reader Russ Hodge responded to the feedback with:Drinking Grandma: The Problem with Embalming” ,” by attorney Jeremiah Chiapelli and Ted Chiapelli, a health sciences professor at Western Carolina University in North Carolina.
The Chiappellis explain: “Modern embalming involves replacing organic blood with a variety of toxic and carcinogenic chemicals, particularly formaldehyde. The embalmed body is then buried underground, but even when placed in a coffin, bodily fluids inevitably leak into groundwater. The reasons embalming was first undertaken, and the rationale for the continued practice, do not justify the potential public health and environmental risks posed by embalming.”
The Chiappellis also talk about research done by others about why so many people in the U.S. choose embalming: “In states that require funeral directors to be embalming technicians or have embalming facilities, cremation rates have decreased due to funeral director solicitation.”
settlement
Nothing livens up the social atmosphere at a strange pub like axe throwing, but the sport can pose dangers for some of those who approach it in a obliging, professional manner.
According to researchers Kusha Dabar, Arthur Jeng, and Suzanne Donovan, one such risk factor is blastomycosis, a fungal disease that “manifests as a pulmonary disease” but can also affect the skin, bones, and genitourinary tract.
The patient “worked at an axe-throwing factory after moving to Los Angeles,” and “his work involved cutting wood for customers.”
Dabber, Jenn and Donovan claim that the disease is “not routinely diagnosed” in Southern California. They say: Blastomyces The fungus was present in the wood before entering the patient’s body.
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Four poultry workers in Colorado recently fell ill with avian flu, bringing the total number of cases in the United States to nine.
Almost all of the infections have been reported since April, giving experts a preliminary idea of what symptoms the virus causes in people.
Cases have been fairly mild, with some typical flu symptoms and some reports of conjunctivitis.
Four poultry workers in Colorado recently fell ill with avian flu, bringing the total number of cases in the United States to at least nine.
Though the numbers are small, researchers say the commonalities between the cases — all but one of which were reported in the past four months — are enough to get a sense of how the virus affects people.
Cases in the US have been relatively mild and limited to farm workers who have handled infected animals, suggesting that the virus in its current form does not pose a significant threat to humans.
Some patients have reported typical flu symptoms such as fever, chills, cough, sore throat, and runny nose, while a few have also developed conjunctivitis and measles.
“One thing we can say is that the current strain of the virus is not adapted to infect humans and may not be adapted to infect the lower respiratory tract,” said Matthew Binnicker, director of the Clinical Virology Laboratory at Mayo Clinic.
The cases have been attributed to the global outbreak of H5N1, a specific strain of avian influenza that swept through America’s poultry and dairy farms in 2020.
The first case in the country was reported in April 2022 in an inmate working on a farm in Colorado who was culling birds and whose only symptom was fatigue. Texas reported a second case in April, followed by two in Michigan and five in Colorado, the latest four of which were confirmed over the weekend.
This H5N1 strain is considered highly pathogenic, which, when the term is used in the context of avian flu, means it has a high chance of killing chickens.
“It’s really scary to hear about such viruses, but the term is actually the USDA term for what happens to poultry,” said John Lednicky, professor of environmental and global health studies at the University of Florida. “Just because it’s highly pathogenic for birds doesn’t mean it’s highly pathogenic for mammals or for humans.”
Lednicky added that some H5N1 strains are deadly to humans, but others are not.
Since 1997, more than 900 total cases of H5N1 have been reported worldwide, about half of which were fatal. But the global mortality rate has fallen to about 27% over the past two years. Still, that figure largely reflects only those whose illness was severe enough to cause them to seek medical treatment.
Dr. Peter Parese, a professor of microbiology at the Icahn School of Medicine at Mount Sinai, said the figures include patients “who were hospitalized and, in retrospect, came into contact with a lot of the virus.”
Palese’s 2012 StudyBlood samples from 12,500 people with no recorded history of avian flu infection were examined and found that 1% to 2% of them may have had a previous infection with H5N1.
But experts worry the virus could one day mutate and cause more severe illness or become more capable of spreading from person to person (all transmission so far has been from animals to people).
“The concern is that as it infects more animals and then infects more humans, the virus will change,” Binnicker said.
Why is conjunctivitis associated with bird flu?
At least four of nine people with avian flu in the United States reported having conjunctivitis.
This was the case in at least one recent case in Colorado, linked to an outbreak at a commercial farm in Weld County where workers were slaughtering poultry.
The state announced earlier this month that another patient Dairy workers People who came into contact with the infected cows also developed conjunctivitis.
A dairy farm worker in Texas was infected with avian influenza and developed conjunctivitis. New England Journal of Medicine
Texas 1 The patient had conjunctivitis and no other symptoms. The patient worked with dairy cows and developed redness and discomfort in her right eye in March. New England Journal of Medicine Case StudyThe individual reported wearing gloves while working but no eye protection.
Scientists say there could be a few factors that explain the recent spread of the condition. One is that farm workers don’t always cover their eyes when handling sick animals, which could result in dairy farmers ingesting raw milk, which can lead to infection. Carrying the virus — That’s how it seemed to them.
Perhaps it is Michigan Dairy Workers He developed mild conjunctivitis in May and was confirmed to have been infected with avian influenza.
The virus can also get into a person’s eye through respiratory droplets or aerosols (tiny droplets in the air), or by workers who touch the eye after handling infected animals or contaminated raw milk.
“The receptors on cells that the virus needs to bind to are quite abundant on cells in the eye, which may be one reason why people with avian flu have conjunctivitis,” Binnicker said.
The Centers for Disease Control and Prevention recommends treating people infected with avian flu with antiviral drugs, and some U.S. patients have been given Tamiflu, a drug also used to treat seasonal flu.
“Studies conducted to date have shown that Tamiflu is effective in treating currently circulating strains of avian flu,” Binnicker said, “and to be most effective, it usually needs to be administered within 48 hours after symptoms begin.”
Infection spreads, tests increase, number of infected people increases
Scientists say the reason why all but one of the U.S. cases have been reported since April could come down to two factors: First, the virus is spreading quickly among birds; Sporadically infect other animalsPeople who have been in contact with infected animals, such as pet cats, are more likely to become infected. Second, health officials have begun monitoring and testing people who have been in contact with infected animals if they develop symptoms.
“There’s probably a much higher amount of virus out there now than there was a year ago, but we’re also seeing more cases because we’re doing more testing,” Binnicker said.
Dr. Natasha Bagdasarian, Michigan’s chief medical officer, said local health departments are conducting tests for people with even the most minor symptoms.
“I think that’s why we’re seeing milder cases,” she said, “because of the aggressive symptom surveillance that we’re doing.”
For example, a Michigan worker who had conjunctivitis did not even see a doctor before being tested for avian flu. Other cases Farm workers who cared for the infected cows reported sore throats, coughs, and stuffy noses to local health authorities.
Baghdasarian said the fact that Michigan has tested about 60 people but has only found two cases shows it takes a lot of contact for a person to get sick, and that the workers who tested positive were not wearing full personal protective equipment and were working on tasks like milking and hydrating cows, he said.
“We’re not talking about people who have had momentary contact with these animals, who pass by a barn or a pen,” Bagdasarian said. “We’re not talking about people who only touch a cow once.”
Japanese honeybees flap their wings to knock down ants that try to invade their nest.
Ants often invade honeybee hives to steal honey, prey on eggs, and kill worker bees. In defense, honeybees are known to fan their wings to blow ants away. Researchers have documented bees making contact with ants using their wings to physically knock them out of the hive, a behavior that has not been studied before.
High-speed camera footage shows guard wasps near the entrance of the hive leaning towards approaching ants, then flapping their wings to change direction and escape. If they hit the ant, it’s blown away.
Many beekeepers seem unaware of this strategy, as noted by Yoshiko Sakamoto. “I have never noticed this behavior in my nearly 10 years of beekeeping experience,” she says.
Researchers Yugo Seko and Kiyoto Morii from the National Institute for Environmental Studies in Tsukuba introduced three species of native ants to the entrances of two Japanese honeybee hives (Honeybees colonies) and captured footage of hundreds of insect duels.
In most interactions, the bees hit the ants with their wings. However, this defense method is not always successful. Against some ants such as Pristomyrmex punctatus and Japanese street ants (Tsushima), the ants were blown away in about half to one third of attempts. This method was less effective against Japanese forest ants (Formica japonica), a larger and faster species.
Ants present varying levels of threat to bees, with some species being more aggressive than others. Bees may have evolved to use the wing-flailing defense tactic to avoid contact with more dangerous ants, while being more efficient against other species, according to the researchers.
The team plans to further study the bees’ responses to ant attacks and observe how the interaction between bees and ants evolves over time. They also aim to investigate whether the bees’ wing-beating skills improve as they gain experience. “There are still many mysteries surrounding this defensive behavior,” Morii says.
New Research has introduced an innovative and cost-effective method for diagnosing autism, potentially simplifying and speeding up the diagnostic process. Surprisingly, the new diagnostic test might involve analyzing stool samples rather than brain scans or psychiatric evaluations. Researchers have discovered consistent differences in the gut microbiome – the population of microorganisms in the intestine – between individuals with autism and those without.
Regularly collecting and analyzing stool samples could potentially enable doctors to identify autism at an earlier stage than current methods allow. This new approach is especially important given the diverse range of symptoms associated with autism, making diagnosis challenging.
“There is a pressing need to delay the diagnosis of autism in children, as the symptoms can vary widely,” according to the co-authors of the study. Professor Shu Qian Ng told BBC Science Focus.
Autism is a common condition, affecting approximately 1 in 100 individuals worldwide. While genetics is thought to play a significant role in autism, other factors such as birth complications, exposure to air pollution, and gender differences may also contribute.
Diagnosing autism currently relies on subjective behavioral assessments and developmental screenings, which can be time-consuming and depend on the availability of trained professionals. The average age of diagnosis in the United States is around 5 years old, resulting in delays in essential care and support for children with autism during crucial developmental stages.
The study, published in Nature Microbiology, analyzed stool samples from 1,627 children between 1 and 13 years of age, some of whom had autism. The researchers identified significant differences in gut bacteria between children with autism and those without, resulting in the identification of specific biomarkers for autism.
Utilizing machine learning algorithms, scientists could determine autism in children with up to 82% accuracy based on the biological function of several microorganisms in the digestive system. This innovative approach offers hope for a non-invasive and efficient diagnostic test for autism, expected to be available by the end of the year.
Read more:
How is the gut microbiome linked to autism?
Dr. Ng explains two primary differences in the gut microbiome of individuals with autism compared to neurotypical individuals. Firstly, individuals with autism tend to have reduced diversity in their gut microbiome, with fewer types of bacteria and viruses. Secondly, children with autism often have an abundance of pathogens in their gut, potentially contributing to their condition.
The ongoing research aims to determine whether interventions such as dietary modifications or probiotics can help improve gut diversity and health, potentially influencing autism symptoms. Early indications suggest that adjusting the microbiome can lead to symptom improvements in children with autism.
While promising, the research does not establish causation between gut biomarkers and autism. Clinical trials are underway to explore the potential of using stool samples as a diagnostic tool for autism in young children.
The study participants were predominantly Chinese, highlighting the need for further global studies to enhance diagnostic accuracy across diverse populations. Despite potential dietary influences, preliminary findings suggest consistent diagnostic performance regardless of dietary habits.
About our experts
Dr. Shu N, a Professor and Associate Dean at The Chinese University of Hong Kong, specializes in investigating the potential of gut microbiota for diagnosing and treating various diseases, including autism. Her research focuses on using microbial markers to predict disease risks and develop personalized interventions for improving health outcomes.
During the eruption of Mount Vesuvius in 79 A.D., residents were trapped under ash and rock, unable to escape. Surprisingly, a new study shows that some people did survive, only to meet their end later due to a different natural disaster.
The eruption covered the city in ash and rock particles for 18 hours, preserving the Roman inhabitants in a protective shell of solidified ash. However, experts discovered two skeletons in a house buried on top of the ash, rather than beneath it, indicating a massive earthquake as the cause of death.
Researchers investigating the house, Casa dei Pittori al Lavoro, noticed the absence of typical volcanic signs in the excavation near Vesuvius. Further examination revealed that the two men found in the house, around 50 years old, suffered severe injuries and were crushed by a collapsing wall due to the earthquake.
Scientists have discovered two skeletons in the ruins of a building in Pompeii and concluded that the cause of death was the collapse of a wall caused by an earthquake. – Image courtesy of Pompeii Archaeological Park
Residents who survived the initial eruption likely thought they were safe and attempted to flee, only to be met with powerful earthquakes. The combination of volcanic and seismic effects made it difficult to study the coincident earthquakes occurring at that time.
Researchers suggest that seismic activity during the eruption played a significant role in the destruction of Pompeii and may have affected the decisions made by its inhabitants facing imminent death.
Argentine archaeologists analyzed 21,000-year-old fossil remains bearing cut marks belonging to a specimen of the extinct glyptodon. NeosclerocalyptusThe discovery, made in the northeast of the Pampean region, on the banks of the Reconquista River, adds new insights into the earliest human settlements in southern South America, and in particular into the interactions between humans and local megafauna in the Pampean region during the last glacial period.
Paleo-Indians hunting a Glyptodon, a relative of the armadillo that lived in the Pleistocene era, by Heinrich Harder, 1920.
The timing of early human occupation in South America is a topic of intense debate and is highly relevant to studies of early human dispersal across the Americas and the potential role of humans in the end-Pleistocene large mammal extinction.
This debate is hampered by a general lack of direct archaeological evidence for early human presence or human-animal interactions.
In the current study, Dr Mariano del Papa from the National University of La Plata and his colleagues found evidence of butchery in Pleistocene mammal fossils discovered on the banks of the Reconquista River in the northeastern Pampeo region of Argentina.
The fossils examined by the team were: Neosclerocalyptus Glyptodon, a giant relative of the armadillo.
Cut marks on the pelvis, tail and parts of the armour matched known marks made by stone tools.
The placement of these marks was consistent with a slaughter procedure that targeted densely packed areas of meat.
“Radiocarbon dating has dated these fossils to approximately 21,000 years ago, approximately 6,000 years older than any other known archaeological evidence from southern South America,” the researchers said.
Distribution of cut marks on the tail vertebrae NeosclerocalyptusImage courtesy of Del Papa others., doi: 10.1371/journal.pone.0304956.
The results are consistent with other recent studies showing early human presence in the Americas more than 20,000 years ago.
These fossils also represent some of the earliest evidence of human interaction with large mammals shortly before many of them went extinct.
“Our findings contradict the established dating framework for the earliest human occupation of southern South America, which was proposed to date back to 16,000 years ago,” the scientists said.
“Surprisingly, Recent Research “We now have reliable evidence of human habitation in Patagonia 17,300 years ago, indicating an even earlier initial settlement of southern South America.”
“Although traditional settlement models tend to support a later human migration into southern South America, we cannot exclude the possibility that humans were present and had associated cultural evidence much earlier than 16,000 years ago.”
“In this context, our findings support the growing body of archaeological evidence indicating an early human settlement in the Americas, especially the Southern Corn Islands.”
M. Delpapa others2024. Artificial cut marks on the bones of an extinct megafauna discovered in the Pampean region (Argentina) during the Last Glacial Maximum. PLoS One 19 (7): e0304956; doi: 10.1371/journal.pone.0304956
Bolivian coffee growers Amazon Weasel (Neogare Africana) Surveys were conducted near shade-grown plots as part of a citizen science monitoring program.
Amazon Weasel (Neogare Africana): They have a distinctive, sharp, dark brown stripe running down the midline from their throat to their belly. Image credit: Bernal-Hoverud others., doi:10.15560/20.3.828.
The Amazonian weasel, also known as the tropical weasel, is a lesser known species of weasel native to South America.
It was first identified as a museum specimen that was mistakenly described as native to Africa, hence the specific name africana.
This species inhabits the tropical environment of the Amazon, where temperatures and rainfall are high throughout the year.
It is found in the Amazon River basin from north-central Brazil through Ecuador, south-central Peru and central Brazil, although its full range is unknown.
“I didn't know what it was, but I knew it was a rare animal,” said coffee grower Einar Quispe, who photographed the weasel near a natural spring on his farm.
“Biodiversity is an important part of our coffee history, so I did everything I could to film it. It's a wonderful surprise to see how important this observation is for Bolivia.”
The new observation in Bolivia represents the southernmost and highest elevation (1,400 metres above sea level) location of this species on record, and the 24th time the species has been recorded anywhere.
This video footage also marks the first time an Amazon weasel has been photographed.
Capturing this weasel for the first time is significant because it provides scientists and the public with their first live footage of this poorly understood carnivore.
“This is an invaluable audiovisual record of a virtually mythical carnivore that lives in the Amazon basin and a fantastic example of the value of citizen science,” said Dr Nuria Bernal, researcher at Texas Tech University.
“As more and more people use their smartphones and cameras to record their observations, we are sure that this is not the only noteworthy scientific contribution by Bolivian citizen scientists.”
“As soon as I saw the video I knew this was a creature we could only dream of observing,” Robert Wallace said. Wildlife Conservation Society (WCS).
“WCS celebrates the importance of citizen science to our knowledge of biodiversity – Bolivia is now recognized as a global leader in the field – and we applaud the continued conservation work and innovation of APCERL's local partners.”
“Eco de las Aves from Bolivia has been our favorite coffee for a while now. How wonderful to know that as a consumer we are contributing to the preservation of Amazon forests and biodiversity while enjoying our morning cup of coffee.”
Harenadraco Prima It is the first species of troodontid dinosaur to be discovered in the Late Cretaceous Barungoyot Formation of Mongolia.
Reconstructing your life Harenadraco PrimaImage courtesy of Yusik Choi.
Harenadraco Prima It lived in what is now Mongolia during the Late Cretaceous period, 72 to 71 million years ago.
This new species is TroodontidaeA group of bird-like theropod dinosaurs that lived from the Late Jurassic to the Late Cretaceous periods.
“Troodontids are a diverse group of theropod dinosaurs commonly characterized by large eye sockets, long hind limbs with asymmetrical metatarsals, enlarged claw bones in the second toe, and many bird-like features,” said paleontologist Seongjin Lee of Seoul National University and his colleagues.
“They have been found in Late Jurassic to Late Cretaceous deposits in Asia and North America.”
Harenadraco Prima It was a small troodontid, about 1 metre (3.3 feet) long.
“Harenadraco Prima Like other troodontids, it was small and lightweight, but its tarsometatarsus was extremely thin. Phyllovenator “Among the zoonotic non-avian maniraptorans,” the paleontologists said.
“It also suggests a potentially adaptive high degree of mobility. Harenadraco Prima “It fits into an environment where potential prey, like mammals, and predators, like Eudromaeosaurus, are likely to be agile.”
Harenadraco PrimaThe incomplete skeleton of consists mainly of elements of the left hind limb, Barungoyot Formation In Hermin Tsav, Umnogovi Province, Mongolia.
“The Upper Cretaceous strata of the Gobi Desert are a rich source of many troodontid species, particularly the Nemegt and Djadokta Formations in the Nemegt Basin in Mongolia, and the Ulansuhai Formation in the Bayan Mandakh in China,” the researchers said.
“From the former, eight species of troodontids are now known.”
“However, the Barungoyot Formation is a puzzling exception, as no troodontids have been found in it, even though it is one of the major sedimentary formations in the Nemegt Basin and is interpreted as intermediate in age and environment between the Djadokta and Nemegt formations.”
“The faunal compositions of the Djadokta and Barungoyot Formations are so similar that the absence of troodontids in the latter is even more puzzling.”
Discovery Harenadraco Prima The presence of troodontids was confirmed in all three formations of the Nemegt Basin.
“The discovery Harenadraco Prima“It becomes clear that the ‘gaps’ in the troodontid record were a sampling artifact,” the scientists concluded.
“The fragile nature of the holotype Harenadraco Prima This is further evidence of this.”
“The presence of Harenadraco Prima “The discovery of the Barungoyot Formation also proves that troodontids in the Nemegt Basin were diverse enough to adapt to a variety of environments.”
Team work Published in Journal of Vertebrate Paleontology.
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Lee Seong-jin othersThe first Troodontidae (Dinosauria: Theropoda) from the Upper Cretaceous Barungoyot Formation in Mongolia. Journal of Vertebrate PaleontologyPublished online July 15, 2024; doi: 10.1080/02724634.2024.2364746
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