Welcome to the Overnight News Digest with a crew consisting of founder Magnifico, regular editors side pocket, maggiejean, Chitown Kev, eeff, Magnifico, annetteboardman, Rise above the swamp, Besame, jck and jeremybloom. Alumni editors include (but not limited to) Interceptor 7, Man Oh Man, wader, Neon Vincent, palantir, Patriot Daily News Clearinghouse (RIP), ek hornbeck (RIP), rfall, ScottyUrb, Doctor RJ, BentLiberal, Oke (RIP) and jlms qkw.
OND is a regular community feature on Daily Kos, consisting of news stories from around the world, sometimes coupled with a daily theme, original research or commentary. Editors of OND impart their own presentation styles and content choices, typically publishing each day near 12:00 AM Eastern Time.
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Here we are for another year of science news, here to give us a respite from the agony of current events, including the anniversary of one of the worst days in American history. (Also too, my dad was born on this day, and he got here first! HBD Dad.)
Private auctions of fossils should be outlawed:
What's in a Name? The Battle of Baby T. Rex and Nanotyrannus.
A dinosaur fossil listed for sale in London for $20 million embodies one of the most heated debates in paleontology. From a report: When fossil hunters unearthed the remains of a dinosaur from the hills of eastern Montana five years ago, they carried several key characteristics of a Tyrannosaurus rex: a pair of giant legs for walking, a much smaller pair of arms for slashing prey, and a long tail stretching behind it. But unlike a full-grown T. rex, which would be about the size of a city bus, this dinosaur was more like the size of a pickup truck. The specimen, which is now listed for sale for $20 million at an art gallery in London, raises a question that has come to obsess paleontologists: Is it simply a young T. rex who died before reaching maturity, or does it represent a different but related species of dinosaur known as a Nanotyrannus?
The dispute has produced reams of scientific research and decades of debate, polarizing paleontologists along the way. Now, with dinosaur fossils increasingly fetching eye-popping prices at auction, the once-esoteric dispute has begun to ripple through auction houses and galleries, where some see the T. rex name as a valuable brand that can more easily command high prices. "It's ultimately a quite in-the-weeds question of the taxonomy and the classification of one very particular type of dinosaur," said Steve Brusatte, a paleontologist at the University of Edinburgh. "However, it involves T. rex, and the debate always gets a little bit more ferocious when the king of dinosaurs is involved."
On the internet, juvenile T. rex versus Nanotyrannus has become something of a meme, providing fuel for jokes on niche social media channels. ("I won't believe in Nanotyrannus until it shows up at my own door and devours me," a paleontology student with the handle "TheDinoBuff" joked recently on the social media site X.) The gallery selling the specimen discovered in Montana -- which is known as Chomper -- was faced with a choice. Call it a juvenile T. rex? Label it a Nanotyrannus? Or embrace the ambiguity of an unresolved scientific debate? The David Aaron gallery in London went with calling it a "rare juvenile Tyrannosaurus rex skeleton." It cited an influential 2020 paper on the subject led by Holly N. Woodward, which used an analysis of growth rings within bone samples from two disputed specimens -- which are estimated to have been similarly sized to Chomper -- to argue that they were juveniles nearing growth spurts.
Scientists Solve the Mystery of How Jellyfish Can Regenerate a Tentacle In Days
An anonymous reader quotes a report from Technology Networks: At about the size of a pinkie nail, the jellyfish species Cladonema can regenerate an amputated tentacle in two to three days -- but how? Regenerating functional tissue across species, including salamanders and insects, relies on the ability to form a blastema, a clump of undifferentiated cells that can repair damage and grow into the missing appendage. Jellyfish, along with other cnidarians such as corals and sea anemones, exhibit high regeneration abilities, but how they form the critical blastema has remained a mystery until now.
A research team based in Japan has revealed that stem-like proliferative cells -- which are actively growing and dividing but not yet differentiating into specific cell types -- appear at the site of injury and help form the blastema. "Importantly, these stem-like proliferative cells in blastema are different from the resident stem cells localized in the tentacle," said corresponding author Yuichiro Nakajima, lecturer in the Graduate School of Pharmaceutical Sciences at the University of Tokyo. "Repair-specific proliferative cells mainly contribute to the epithelium -- the thin outer layer -- of the newly formed tentacle."
The resident stem cells that exist in and near the tentacle are responsible for generating all cellular lineages during homeostasis and regeneration, meaning they maintain and repair whatever cells are needed during the jellyfish's lifetime, according to Nakajima. Repair-specific proliferative cells only appear at the time of injury. "Together, resident stem cells and repair-specific proliferative cells allow rapid regeneration of the functional tentacle within a few days," Nakajima said, noting that jellyfish use their tentacles to hunt and feed. [...] The cellular origins of the repair-specific proliferative cells observed in the blastema remain unclear, though, and the researchers say the currently available tools to investigate the origins are too limited to elucidate the source of those cells or to identify other, different stem-like cells. "It would be essential to introduce genetic tools that allow the tracing of specific cell lineages and the manipulation in Cladonema," Nakajima said. "Ultimately, understanding blastema formation mechanisms in regenerative animals, including jellyfish, may help us identify cellular and molecular components that improve our own regenerative abilities."
The findings were published in the journal PLOS Biology.
There's a Big Difference In How Your Brain Processes the Numbers 4 and 5
According to a new study [published in Nature Human Behavior], the human brain has two separate ways of processing numbers of things: one system for quantities of four or fewer, and another system for five and up. Presented with four or fewer objects, humans can usually identify the sum at first glance, without counting. And we're almost always right. This ability is known as "subitizing," a term coined by psychologists last century, and it's different from both counting and estimating. It refers to an uncanny sense of immediately knowing how many things you're looking at, with no tallying or guessing required.
While we can easily subitize quantities up to four, however, the ability disappears when we're looking at five or more things. If asked to instantly quantify a group of seven apples, for example, we tend to hesitate and estimate, taking slightly longer to respond and still providing less precise answers. Since our subitizing skills vanish so abruptly for quantities larger than four, some researchers have suspected our brains use two distinct processing methods, specialized for either small or large quantities. "However, this idea has been disputed up to now," says co-author Florian Mormann, a cognitive neurophysiologist from the Department of Epileptology at the University Hospital Bonn. "It could also be that our brain always makes an estimate but the error rates for smaller numbers of things are so low that they simply go unnoticed."
Previous research involving some of the new study's authors showed that human brains have neurons responsible for each number, with certain nerve cells firing selectively in response to certain quantities. Some neurons fire mainly when a person sees two of something, they found, while others show a similar affinity for their own number of visual elements. Yet many of these neurons also fire in response to slightly smaller or larger numbers, the researchers note, with a weaker reaction for quantities further removed from their numerical focus. "A brain cell for a number of 'seven' elements thus also fires for six and eight elements but more weakly," says neurobiologist Andreas Nieder from the University of Tubingen. "The same cell is still activated but even less so for five or nine elements."
This kind of "numerical distance effect" also occurs in monkeys, as Nieder has shown in previous research. Among humans, however, it typically happens only when we see five or more things, hinting at some undiscovered difference in the way we identify smaller numbers. "There seems to be an additional mechanism for numbers of around less than five elements that makes these neurons more precise," Nieder says. Neurons responsible for lower numbers are able to inhibit other neurons responsible for adjacent numbers, the study's authors report, thus limiting any mixed signals about the quantity in question. When a trio-specializing neuron fires, for example, it also inhibits the neurons that typically fire in response to groups of two or four things. Neurons for the number five and beyond apparently lack this mechanism.
Magnetic fields in the cosmos: Dark matter could help us discover their origin
We don't know how magnetic fields in the cosmos formed. Now a new theoretical research tells how the invisible part of our universe could help us find out, suggesting a primordial genesis, even within a second of the Big Bang.
The mini-halos of dark matter scattered throughout the Cosmos could function as highly sensitive probes of primordial magnetic fields. This is what emerges from a theoretical study conducted by SISSA and published in Physical Review Letters. Present on immense scales, magnetic fields are found everywhere in the Universe. However, their origin are still subjects of debate among scholars. An intriguing possibility is that magnetic fields originated near the birth of the universe itself, that is they are primordial magnetic fields.
In the study, researchers showed that if magnetic fields are indeed primordial then it could cause an increase in dark matter density perturbations on small scales.
Is oxygen the cosmic key to alien technology?
In the quest to understand the potential for life beyond Earth, researchers are widening their search to encompass not only biological markers, but also technological ones. While astrobiologists have long recognized the importance of oxygen for life as we know it, oxygen could also be a key to unlocking advanced technology on a planetary scale.
In a new study published in Nature Astronomy, Adam Frank, the Helen F. and Fred H. Gowen Professor of Physics and Astronomy at the University of Rochester and the author of The Little Book of Aliens (Harper, 2023), and Amedeo Balbi, an associate professor of astronomy and astrophysics at the University of Roma Tor Vergata, Italy, outline the links between atmospheric oxygen and the potential rise of advanced technology on distant planets.
The evolution of photosynthesis better documented thanks to the discovery of the oldest thylakoids in fossil cyanobacteria
Researchers at the University of Liège (ULiège) have identified microstructures in fossil cells that are 1.75 billion years old. These structures, called thylakoid membranes, are the oldest ever discovered. They push back the fossil record of thylakoids by 1.2 billion years and provide new information on the evolution of cyanobacteria which played a crucial role in the accumulation of oxygen on the early Earth. This major discovery is presented in the journal Nature.
Catherine Demoulin, Yannick Lara, Alexandre Lambion and Emmanuelle Javaux from the Early Life Traces & Evolution laboratory of the Astrobiology Research Unit at ULiège examined enigmatic microfossils called Navifusa majensis (N.majensis) in shales from the McDermott Formation in Australia, which are 1.75 billion years old, and in 1 billion year old formations of DRCongo and arctic Canada.
Ultrastructural analyses in fossil cells from 2 formations (Australia, Canada) revealed the presence of internal membranes with an arrangement, fine structure and dimensions permitting to interpret them unambiguously as thylakoid membranes, where oxygenic photosynthesis occurs.
These observations permitted to identify N majensis as a fossil cyanobacterium.
Scientists solve mystery of how predatory bacteria recognizes prey
A decades-old mystery of how natural antimicrobial predatory bacteria are able to recognize and kill other bacteria may have been solved, according to new research.
In a study published today (4th January) in Nature Microbiology, researchers from the University of Birmingham and the University of Nottingham have discovered how natural antimicrobial predatory bacteria, called Bdellovibrio bacterivorous, produce fibre-like proteins on their surface to ensnare prey.
This discovery may enable scientists to use these predators to target and kill problematic bacteria that cause issues in healthcare, food spoilage and the environment.
'Giant' predator worms more than half a billion years old discovered in North Greenland
Fossils of a new group of animal predators have been located in the Early Cambrian Sirius Passet fossil locality in North Greenland. These large worms may be some of the earliest carnivorous animals to have colonised the water column more than 518 million years ago, revealing a past dynasty of predators that scientists didn't know existed.
The new fossil animals have been named Timorebestia, meaning 'terror beasts' in Latin.
Adorned with fins down the sides of their body, a distinct head with long antennae, massive jaw structures inside their mouth and growing to more than 30cm in length, these were some of the largest swimming animals in the Early Cambrian times.
The snail or the egg?
Animals reproduce in one of two distinct ways: egg-laying or live birth. By studying an evolutionarily recent transition from egg-laying to live-bearing in a marine snail, collaborative research by the Institute of Science and Technology Austria (ISTA), the University of Sheffield, and the University of Gothenburg has shed new light on the genetic changes that allow organisms to make the switch. The results were published in Science.
The egg did come first. Egg-laying arose deep in evolutionary time, long before animals even made their way onto land.
Throughout evolution, there have been many independent transitions to live-bearing across the animal kingdom, including insects, fish, reptiles, and mammals.
Researchers rely on Earth's magnetic field to verify an event mentioned in the Old Testament
A new study scientifically corroborates an event described in the Second Book of Kings -- the conquest of the Philistine city of Gath by Hazael King of Aram. The method is based on measuring the magnetic field recorded in burnt bricks. The researchers say that the findings are important for determining the intensity of the fire and the scope of destruction in Gath, and also for understanding construction practices in the region.
A breakthrough achieved by researchers from four Israeli universities -- Tel Aviv University, The Hebrew University of Jerusalem, Bar-Ilan University and Ariel University- will enable archaeologists to identify burnt materials discovered in excavations and estimate their firing temperatures. Applying their method to findings from ancient Gath (Tell es-Safi in central Israel), the researchers validated the Biblical account: "About this time Hazael King of Aram went up and attacked Gath and captured it. Then he turned to attack Jerusalem" (2 Kings 12, 18). They explain that unlike previous methods, the new technique can determine whether a certain item (such as a mud brick) underwent a firing event even at relatively low temperatures, from 200°C and up. This information can be crucial for correctly interpreting the findings.
Hearing aids may help people live longer
Hearing loss affects approximately 40 million American adults, yet only one in 10 people who need hearing aids use them, research shows.
Those who don't use hearing aids but should may want to make wearing them one of their New Year's resolutions, according to a new study from Keck Medicine of USC published today in The Lancet Healthy Longevity.
"We found that adults with hearing loss who regularly used hearing aids had a 24% lower risk of mortality than those who never wore them," said Janet Choi, MD, MPH, an otolaryngologist with Keck Medicine and lead researcher of the study.
Human beliefs about drugs could have dose-dependent effects on the brain
Mount Sinai researchers have shown for the first time that a person's beliefs related to drugs can influence their own brain activity and behavioral responses in a way comparable to the dose-dependent effects of pharmacology.
The implications of the study, which directly focused on beliefs about nicotine, are profound.
They range from elucidating how the neural mechanisms underlying beliefs may play a key role in addiction, to optimizing pharmacological and nonpharmacological treatments by leveraging the power of human beliefs.
AI and Satellite Imagery Used To Create Clearest Map Yet of Human Activity At Sea
An anonymous reader quotes a report from The Verge: Using satellite imagery and AI, researchers have mapped human activity at sea with more precision than ever before. The effort exposed a huge amount of industrial activity that previously flew under the radar, from suspicious fishing operations to an explosion of offshore energy development. The maps were published today in the journal Nature. The research led by Google-backed nonprofit Global Fishing Watch revealed that a whopping three-quarters of the world's industrial fishing vessels are not publicly tracked. Up to 30 percent of transport and energy vessels also escape public tracking. Those blind spots could hamper global conservation efforts, the researchers say. To better protect the world's oceans and fisheries, policymakers need a more accurate picture of where people are exploiting resources at sea.
Until now, Global Fishing Watch and other organizations relied primarily on the maritime Automatic Identification System (AIS) to see what was happening at sea. The system tracks vessels that carry a box that sends out radio signals, and the data has been used in the past to document overfishing and forced labor on vessels. Even so, there are major limitations with the system. Requirements to carry AIS vary by country and vessel type. And it's pretty easy for someone to turn the box off when they want to avoid detection, or cruise through locations where signal strength is spotty. To fill in the blanks, Kroodsma and his colleagues analyzed 2,000 terabytes of imagery from the European Space Agency's Sentinel-1 satellite constellation. Instead of taking traditional optical imagery, which is like snapping photos with a camera, Sentinel-1 uses advanced radar instruments to observe the surface of the Earth. Radar can penetrate clouds and "see" in the dark -- and it was able to spot offshore activity that AIS missed.
Since 2,000 terabytes is an enormous amount of data to crunch, the researchers developed three deep-learning models to classify each detected vessel, estimate their size, and sort out different kinds of offshore infrastructure. They monitored some 15 percent of the world's oceans where 75 percent of industrial activity takes place, paying attention to both vessel movements and the development of stationary offshore structures like oil rigs and wind turbines between 2017 and 2021. While fishing activity dipped at the onset of the covid-19 pandemic in 2020, they found dense vessel traffic in areas that "previously showed little to no vessel activity" in public tracking systems -- particularly around South and Southeast Asia, and the northern and western coasts of Africa.
A boom in offshore energy development was also visible in the data. Wind turbines outnumbered oil structures by the end of 2020. Turbines made up 48 percent of all ocean infrastructure by the following year, while oil structures accounted for 38 percent. Nearly all of the offshore wind development took place off the coasts of northern Europe and China. In the Northeast US, clean energy opponents have tried to falsely link whale deaths to upcoming offshore wind development even though evidence points to vessel strikes being the problem. Oil structures have a lot more vessels swarming around them than wind turbines. Tank vessels are used at times to transport oil to shore as an alternative to pipelines. The number of oil structures grew 16 percent over the five years studied. And offshore oil development was linked to five times as much vessel traffic globally as wind turbines in 2021. "The actual amount of vessel traffic globally from wind turbines is tiny, compared to the rest of traffic," Kroodsma says.
World's First Partial Heart Transplant Grows Valves and Arteries
An anonymous reader quotes a report from Interesting Engineering: Marking a significant advancement in medical science, the world's first partial heart transplant has achieved the expected outcome after over a year of research efforts. Carried out by Duke Health, the patient, a young individual, now exhibits functioning valves and arteries that are growing in tandem with the transplant, as initially expected by the medical team. In spring 2022, doctors carried out the procedure on a baby who needed a new heart valve. Before, they used non-living valves, which didn't grow with the child. This meant the child needed frequent replacements, and the surgeries had a 50 percent chance of being deadly. The new procedure avoids these problems, according to the team.
Babies with serious heart valve problems face a tough challenge because there aren't any implants that can grow with them. So, these babies end up needing new implants over and over until they're big enough for an adult-sized valve. It's a problem that doesn't have a solution yet. Duke Health doctors, leading a study published in the Journal of the American Medical Association, discovered that the innovative valve collection method used in the partial heart transplant resulted in two properly functioning valves and arteries that are growing along with the child, resembling natural blood vessels. "This publication is proof that this technology works, this idea works, and can be used to help other children," said Joseph W. Turek, first author of the study and Duke's chief of pediatric cardiac surgery, in a statement. The research also notes that the new procedure requires less immunosuppressant medication, reducing potential long-term side effects.
It also facilitates a "domino transplant" method, where one donor heart benefits multiple patients, potentially doubling the number of hearts available for children with heart disease by utilizing previously unused hearts and valves.
Study reveals new genetic link between anorexia nervosa and being an early riser
New research indicates that the eating disorder anorexia nervosa is associated with being an early riser, unlike many other disorders that tend to be evening-based such as depression, binge eating disorder and schizophrenia.
The study, which is published in JAMA Network Open and led by investigators at Massachusetts General Hospital (MGH), in collaboration with University College London and the University of the Republic in Uruguay, also revealed a link between anorexia nervosa and insomnia risk.
Previous research has suggested a possible connection between eating disorders and the body's internal clock, or circadian clock, which controls a wide range of biological functions such as sleep and affects nearly every organ in the body.
A new approach can address antibiotic resistance to Mycobacterium abscessus
Scientists at St. Jude Children's Research Hospital are tackling Mycobacterium abscessus (Mab) antibiotic resistance. This naturally antibiotic-resistant pathogen is becoming more prevalent, highlighting the urgent need for novel therapeutics. To address this, the scientists designed new versions of the drug spectinomycin that overcome efflux, the main mechanism driving resistance. The work was published today in Proceedings of the National Academy of Science.
Mab infections are increasingly found in health care settings.
Such infections can be hazardous for patients with compromised lung function, such as in cystic fibrosis, or who are immunologically compromised, such as in childhood cancer.
Surprise! -- How the brain learns to deal with the unexpected
For children, the world is full of surprises. Adults, on the other hand, are much more difficult to surprise. And there are complex processes behind this apparently straightforward state of affairs. Researchers at the University of Basel have been using mice to decode how reactions to the unexpected develop in the growing brain.
Babies love playing peekaboo, continuing to react even on the tenth sudden appearance of their partner in the game.
Recognizing the unexpected is an important cognitive ability.
Better mental, physical health in older people tied to living near nature
Even small differences in the availability of urban green and blue spaces may be associated with better mental and physical health in older adults, according to a Washington State University study.
The study's findings showed that having just 10% more forest space in a person's residential ZIP code was associated with reduced serious psychological distress, which covers mental health problems that require treatment and interfere with people's social lives, work or school.
Similarly, a 10% [de]crease in green space, tree cover, water bodies or trail length lowered the chance that older people reported their general health as poor or fair.
"Our findings suggest that loss of our urban green and blue spaces due to rapid urbanization may not just have an environmental impact but could have a public health impact as well," said first study author Adithya Vegaraju, a medical student in the WSU Elson S. Floyd College of Medicine.
Evolution might stop humans from solving climate change
Human culture has evolved to allow humans to extract resources and helped us expand to dominate the biosphere. But the same evolutionary processes may counteract efforts to solve new global environmental threats like climate change, according to a new study. Tackling the climate crisis will require worldwide regulatory, technical and economic systems supported by strong global cooperation. However, this new study concludes that the group-level processes characteristic of human cultural evolution, will cause environmental competition and conflict between sub-global groups, and work against global solutions. Adapting to climate change and other environmental problems will, therefore, require human evolution to change.
Cult mentality: Monumental discovery in Italy
Douglas Boin, Ph.D., a professor of history at Saint Louis University, made a major announcement at the annual meeting of the Archeological Institute of America, revealing he and his team discovered an ancient Roman temple that adds significant insights into the social change from pagan gods to Christianity within the Roman Empire.
"We found three walls of a monumental structure that evidence suggests belonged to a Roman temple that dates to Constantine's period," Boin said.
"It dates to the fourth century AD and it would be a remarkable addition to the landscape of this corner of Italy. It will significantly aid in the understanding of the ancient town, the ancient townscape and city society in the later Roman Empire because it shows the continuities between the classical pagan world and early Christian Roman world that often get blurred out or written out of the sweeping historical narratives."