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Overnight News Digest: Science Saturday, 2/1/25 [1]
['This Content Is Not Subject To Review Daily Kos Staff Prior To Publication.']
Date: 2025-02-01
Welcome to the Overnight News Digest with a crew consisting of founder Magnifico, regular editors side pocket, maggiejean, Chitown Kev, eeff, Magnifico, annetteboardman, Besame, jck, and JeremyBloom. Alumni editors include (but not limited to) Interceptor 7, Man Oh Man (RIP), 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. Please feel free to share your articles and stories in the comments. I don’t know how many of these science editions we’ve got left. The shutdown of science funding by the federal government will have an effect on the amount of science news.
Peeing Is Socially Contagious In Chimps
After observing 20 chimpanzees for over 600 hours, researchers in Japan found that chimps are more likely to urinate after witnessing others do so. "[T]he team meticulously recorded the number and timing of 'urination events' along with the relative distances between 'the urinator and potential followers,'" writes 404 Media's Becky Ferreira. "The results revealed that urination is, in fact, socially contagious for chimps and that low-dominant individuals were especially likely to pee after watching others pee. Call it: pee-r pressure." The findings have been published in the journal Cell Biology. From the study: The decision to urinate involves a complex combination of both physiological and social considerations. However, the social dimensions of urination remain largely unexplored. More specifically, aligning urination in time (i.e. synchrony) and the triggering of urination by observing similar behavior in others (i.e. social contagion) are thought to occur in humans across different cultures (Figure S1A), and possibly also in non-human animals. However, neither has been scientifically quantified in any species. Contagious urination, like other forms of behavioral and emotional state matching, may have important implications in establishing and maintaining social cohesion, in addition to potential roles in preparation for collective departure (i.e. voiding before long-distance travel) and territorial scent-marking (i.e. coordination of chemosensory signals). Here, we report socially contagious urination in chimpanzees, one of our closest relatives, as measured through all-occurrence recording of 20 captive chimpanzees across >600 hours. Our results suggest that socially contagious urination may be an overlooked, and potentially widespread, facet of social behavior. In conclusion, we find that in captive chimpanzees the act of urination is socially contagious. Further, low-dominance individuals had higher rates of contagion. We found no evidence that this phenomenon is moderated by dyadic affiliation. It remains possible that latent individual factors associated with low dominance status (e.g. vigilance and attentional bias, stress levels, personality traits) might shape the contagion of urination, or alternatively that there are true dominance-driven effects. In any case, our results raise several new and important questions around contagious urination across species, from ethology to psychology to endocrinology.
Dangerous Temperatures Could Kill 50% More Europeans By 2100, Study Finds
Dangerous temperatures could kill 50% more people in Europe by the end of the century, a study has found, with the lives lost to stronger heat projected to outnumber those saved from milder cold. From a report: The researchers estimated an extra 8,000 people would die each year as a result of "suboptimal temperatures" even under the most optimistic scenario for cutting planet-heating pollution. The hottest plausible scenario they considered showed a net increase of 80,000 temperature-related deaths a year. The findings challenge an argument popular among those who say global heating is good for society because fewer people will die from cold weather. "We wanted to test this," said Pierre Masselot, a statistician at the London School of Hygiene & Tropical Medicine and lead author of the study. "And we show clearly that we will see a net increase in temperature-related deaths under climate change." The study builds on previous research in which the scientists linked temperature to mortality rates for different age groups in 854 cities across Europe. They combined these with three climate scenarios that map possible changes in population structure and temperature over the century.
Microplastics Found In the Brains of Mice Within Hours of Consumption
A team of biologists have found that it takes microplastics consumed by mice just a few hours to reach their brains. "Wondering if the plastic in their brains was causing any impairment, the researchers tested several of the mice and found that many of them experienced memory loss, reductions in motor skills and lower endurance," reports Phys.Org. From the report: In this new effort, the research team sought to learn more about the medical impact of a mammal consuming different sizes of microplastics. The experiments consisted of feeding test mice water with different sized bits of fluorescent plastic in it, from micro to nano. They then tracked the progress of the plastic bits to see where they wound up in the bodies of the mice. Knowing that the plastic would make its way from the digestive tract into the bloodstream, the researchers used two-photon microscopy to capture imagery of it inside blood vessels. Also, suspecting that the tiniest bits would make it into their brains, the team installed tiny windows in their skulls, allowing them to track the movement of the plastic in their brains. In studying the imagery they created, the researchers were able to watch as the plastics made their way around the mice's bodies, eventually reaching their brains. They also noted that the plastic bits tended to get backed up, like cars in a traffic jam at different points. In taking a closer look at some of the backups in the brain, the researchers found that the plastic bits had been captured by immune cells, which led to even more backups. The findings have been published in the journal Science Advances.
Technology For Lab-Grown Eggs Or Sperm On Brink of Viability, UK Watchdog Finds
An anonymous reader quotes a report from The Guardian: Bolstered by Silicon Valley investment, scientists are making such rapid progress that lab-grown human eggs and sperm could be a reality within a decade, a meeting of the Human Fertilization and Embryology Authority board heard last week (PDF). In-vitro gametes (IVGs), eggs or sperm that are created in the lab from genetically reprogrammed skin or stem cells, are viewed as the holy grail of fertility research. The technology promises to remove age barriers to conception and could pave the way for same-sex couples to have biological children together. It also poses unprecedented medical and ethical risks, which the HFEA now believes need to be considered in a proposed overhaul of fertility laws. Peter Thompson, chief executive of the HFEA, said: "In-vitro gametes have the potential to vastly increase the availability of human sperm and eggs for research and, if proved safe, effective, and publicly acceptable, to provide new fertility treatment options for men with low sperm counts and women with low ovarian reserve." The technology also heralds more radical possibilities including "solo parenting" and "multiplex parenting." Julia Chain, chair of HFEA, said: "It feels like we ought to have Steven Spielberg on this committee," in a brief moment of levity in the discussion of how technology should be regulated. Lab-grown eggs have already been used produce healthy babies in mice -- including ones with two biological fathers. The equivalent feat is yet to be achieved using human cells, but US startups such as Conception and Gameto claim to be closing in on this prize. The HFEA meeting noted that estimated timeframes ranged from two to three years -- deemed to be optimistic -- to a decade, with several clinicians at the meeting sharing the view that IVGs appeared destined to become "a routine part of clinical practice." The clinical use of IVGs would be prohibited under current law and there would be significant hurdles to proving that IVGs are safe, given that any unintended genetic changes to the cells would be passed down to all future generations. The technology also opens up myriad ethical issues. Thompson said: "Research on IVGs is progressing quickly but it is not yet clear when they might be a viable option in treatment. IVGs raise important questions and that is why the HFEA has recommended that they should be subject to statutory regulation in time, and that biologically dangerous use of IVGs in treatment should never be permitted." "This is the latest of a range of detailed recommendations on scientific developments that we are looking at to future-proof the HFE Act, but any decisions around UK modernizing fertility law are a matter for parliament."
Asteroid Contains Building Blocks of Life, Say Scientists
Mr. Dollar Ton shares a report from the BBC: The chemical building blocks of life have been found, among many other complex chemical compounds, in the grainy dust of an asteroid called Bennu, an analysis reveals. Samples of the space rock, which were scooped up by a Nasa spacecraft and brought to Earth, contain a rich array of minerals and thousands of organic compounds. These include amino acids, which are the molecules that make up proteins, as well as nucleobases -- the fundamental components of DNA. The findings are published in two papers in the journal nature. x NASA's asteroid samples from Bennu contain amino acids and sodium-rich minerals, suggesting asteroids may have contributed to life's origins on Earth by providing essential ingredients and water. doi.org/g83tcs — Science X / Phys.org (@sciencex.bsky.social) 2025-02-01T11:02:22-05:00
Astronomers Discover 196-Foot Asteroid With 1-In-83 Chance of Hitting Earth In 2032
Astronomers have discovered a newly identified asteroid that has a 1-in-83 chance of striking Earth on December 22, 2032, though the most likely scenario is a close miss. Designated as 2024 YR4, the asteroid measures in at 196 feet wide and is currently 27 million miles away. Space.com reports: The near-Earth object (NEO) discovered in 2024, which is around half as wide as a football field is long, will make a very close approach to Earth on Dec. 22, 2032. It's estimated to come within around 66,000 miles (106,200 kilometers) of Earth on that day, according to NASA's Center of NEO Studies (CNEOS). However, when orbital uncertainties are considered, that close approach could turn out to be a direct hit on our planet. Such an impact could cause an explosion in the atmosphere, called an "airburst," or could cause an impact crater when it slams into the ground. This is enough to see asteroid 2024 YR4 leap to the top of the European Space Agency's NEO impact Risk List and NASA's Sentry Risk Table. "People should absolutely not worry about this yet," said Catalina Sky Survey engineer and asteroid hunter David Rankin. "Impact probability is still very low, and the most likely outcome will be a close approaching rock that misses us." As for where it could hit Earth, Rankin said that the "risk corridor" for impact runs from South America across the Atlantic to sub-Saharan Africa.
Study of More Than 600 Animal and Plant Species Finds Genetic Diversity Has Declined Globally
Genetic diversity in animals and plants has declined globally over the past three decades, an analysis of more than 600 species has found. From a report: The research, published in the journal Nature, found declines in two-thirds of the populations studied, but noted that urgent conservation efforts could halt or even reverse genetic diversity losses. Dozens of scientists internationally reviewed 882 studies that measured genetic diversity changes between 1985 and 2019 in 628 species of animals, plants, fungi and chromists (a type of organism), forming what they have called "the most comprehensive investigation" of changes in genetic diversity within species to date. The study's lead researcher, Assoc Prof Catherine Grueber of the University of Sydney, said within-species diversity -- referring to the variation between individuals of the same species -- enabled a population to better adapt to changes in its environment. "If a new disease comes through, or there's a heatwave, there may be some individuals in the population that have certain characteristics that enable them to tolerate those new conditions," she said. "Those characteristics will get passed on to the next generation, and the population will persist instead of going extinct."
Moon is not as 'geologically dead' as previously thought
Scientists have studied the moon's surface for decades to help piece together its complex geological and evolutionary history. Evidence from the lunar maria (dark, flat areas on the moon filled with solidified lava) suggested that the moon experienced significant compression in its distant past. Researchers suspected that large, arching ridges on the moon's near side were formed by contractions that occurred billions of years ago -- concluding that the moon's maria has remained dormant ever since. However, a new study reveals that what lies beneath the lunar surface may be more dynamic than previously believed. Two Smithsonian Institution scientists and a University of Maryland geologist discovered that small ridges located on the moon's far side were notably younger than previously studied ridges on the near side. x Recent findings indicate the Moon's geological activity may be more recent and dynamic than previously thought, with small ridges on its far side suggesting tectonic activity within the last 160 million years. doi.org/g83gzq — Science X / Phys.org (@sciencex.bsky.social) 2025-01-28T17:32:23-05:00
A super-Earth laboratory for searching life elsewhere in the Universe
Thirty years after the discovery of the first exoplanet, we detected more than 7000 of them in our Galaxy. But there are still billions more to be discovered! At the same time, exoplanetologists have begun to take an interest in their characteristics, with the aim of finding life elsewhere in the Universe. This is the background to the discovery of super-Earth HD 20794 d by an international team including the University of Geneva (UNIGE) and the NCCR PlanetS. The new planet lies in an eccentric orbit, so that it oscillates in and out of its star's habitable zone. This discovery is the fruit of 20 years of observations using the best telescopes in the world. The results are published today in the journal Astronomy & Astrophysics. ''Are we alone in the Universe?'' For thousands of years, this question was confined to philosophy, and it is only very recently that modern science has begun to provide solid hypotheses and evidence to answer it. However, astronomers are making slow progress. Each new discovery, whether theoretical or observational, adds to the edifice by pushing back the limits of knowledge. This was the case with the discovery in 1995 of the first planet orbiting a star other than the Sun, which earned two UNIGE researchers, Michel Mayor and Didier Queloz, the 2019 Physics Nobel Prize.
Dwarf planet Ceres: Building blocks of life delivered from space
The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior. The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting asteroids from the outer asteroid belt may have brought it with them.
Explaining persistent hydrogen in Mars' atmosphere
The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, Harvard researchers think they have a good explanation for a warmer, wetter ancient Mars. Building on prior theories describing the Mars of yore as a hot again, cold again place, a team led by researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have determined the chemical mechanisms by which ancient Mars was able to sustain enough warmth in its early days to host water, and possibly life. x New research suggests ancient Mars experienced episodic warm periods, driven by hydrogen and CO2 interactions, potentially supporting water and prebiotic chemistry billions of years ago. doi.org/g83gf4 — Science X / Phys.org (@sciencex.bsky.social) 2025-01-28T14:02:19-05:00
How does the atmosphere affect ocean weather?
Much like the windy weather patterns that affect the Earth's surface, our planet's oceans experience their own distinct weather patterns. These weather patterns, known as eddies, are circular currents of water that are typically about 100 kilometers wide. A new study of satellite imagery and high-resolution climate model data by scientists at the University of Rochester upends previous assumptions and provides insight about how those surface and ocean weather patterns interact. Scientists formerly believed atmospheric wind had a damping effect, slowing the eddies, but the study, published in Nature Communications, offers a new theory that better explains the complexities of how atmospheric wind affects eddies. x Atmospheric winds influence ocean eddies by either slowing or energizing them, depending on their spin direction, offering new insights into the interaction between atmospheric and oceanic weather patterns. doi.org/g83r5d — Science X / Phys.org (@sciencex.bsky.social) 2025-01-31T17:32:26-05:00
Wildfire smoke can carry toxins hundreds of kilometers, depositing grime on urban structures, surfaces
Researchers have shown that plumes of wildfire smoke can carry contaminants hundreds of kilometres, leaving a toxic and lingering footprint which has the potential to be re-released into the environment. The frequency and severity of wildfires is expected to continue increasing due to climate change. In recent weeks, catastrophic wildfires have devasted Los Angeles, scorching tens of thousands of acres. Canada's 2023 wildfire season was the most destructive ever recorded, with an estimated 18.5 million hectares burned. The 2024 season was the second worst on record, with more than 5 million hectares burned according to the Canadian Interagency Forest Fire Centre, which tracks national statistics.
Sharks and rays benefit from global warming, but not from CO2 in the Oceans
Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat. An international research team led by palaeobiologist Manuel A. Staggl from the University of Vienna has now investigated whether and how global warming influences the diversity of sharks based on climate fluctuations between 200 and 66 million years ago. According to the study, higher temperatures and more shallow water areas have a positive effect, while higher CO 2 levels have a clearly negative effect. The study was recently published in the scientific journal Biology. There have been five mass extinctions in Earth's history -- and one group of animals has survived them all: cartilaginous fish, which include sharks and rays, have inhabited the oceans for more than 450 million years; more than 1,200 shark and ray species are known today. However, more than a third of these species are now seriously threatened due to their habits and increasing over-exploitation and habitat destruction; extinction would also have a direct impact on many ecosystems.
Oceanic plate between Arabian and Eurasian continental plates is breaking away
An international research team led by the University of Göttingen has investigated the influence of the forces exerted by the Zagros Mountains in the Kurdistan region of Iraq on how much the surface of the Earth has bent over the last 20 million years. Their research revealed that in the present day, deep below the Earth's surface, the Neotethys oceanic plate -- the ocean floor that used to be between the Arabian and Eurasian continents -- is breaking off horizontally, with a tear progressively lengthening from southeast Turkey to northwest Iran. Their findings show how the evolution of the Earth's surface is controlled by processes deep within the planet's interior. The research was published in the journal Solid Earth. When two continents converge over millions of years, the oceanic floor between them slides to great depths beneath the continents. Eventually, the continents collide, and masses of rock from their edges are lifted up into towering mountain ranges. x The Neotethys oceanic plate beneath the Arabian and Eurasian continents is breaking off, influencing Earth's surface evolution and sediment accumulation in the region. doi.org/n374 — Science X / Phys.org (@sciencex.bsky.social) 2025-01-29T18:02:22-05:00
Archaeologists find 'lost' site depicted in the Bayeux Tapestry
Archaeologists have uncovered evidence that a house in England is the site of a lost residence of Harold, the last Anglo-Saxon King of England, and shown in the Bayeux Tapestry. By reinterpreting previous excavations and conducting new surveys, the team from Newcastle University, UK, together with colleagues from the University of Exeter, believe they have located a power centre belonging to Harold Godwinson, who was killed in the Battle of Hastings in 1066. Bosham, on the coast of West Sussex, is depicted twice in the Bayeux Tapestry, which famously narrates the Norman Conquest of England in 1066 when William, Duke of Normandy, challenged Harold for the throne. The Tapestry culminates in Williams's victory at Hastings, but earlier in the artwork Bosham is shown as the place where Harold enjoys a feast in an extravagant hall before setting sail for France, and again on his return.
Lead contamination in ancient Greece points to societal change
Studies of sediment cores from the sea floor and the coastal regions surrounding the Aegean Sea show that humans contaminated the environment with lead early on in antiquity. A research team led by geoscientists from Heidelberg University conducted the analyses, which revealed that human activity in the region resulted in lead contamination of the environment approximately 5,200 years ago -- much earlier than previously known. Combined with the results of pollen analyses from the sediment cores, this contamination also offers insights into socioeconomic change in the Aegean, even reflecting historical events such as the conquest of Greece by the Romans. The Aegean region gave rise to some of the earliest cultures of ancient Europe. The research team investigated when and to what extent early human activities in the region affected ecosystems both on land and in the marine environment.
Life cycles of some insects adapt well to a changing climate: Others, not so much
Some biologists speculate that animals will get smaller with global warming to reduce heat stress. While this may be true of warm-blooded animals, what about exotherms like insects? Thanks to a 65-year-old grasshopper collection, scientists have documented that some species -- those overwintering as juveniles -- got larger over the years, helped by an earlier green spring. Grasshoppers with other lifestyles got smaller. Much of this can be predicted given what biologists know of insect life cycles. As insect populations decrease worldwide in what some have called an "insect apocalypse," biologists are desperate to determine how the six-legged creatures are responding to a warming world and to predict the long-term winners and losers. A new study of Colorado grasshoppers shows that, while the answers are complicated, biologists have much of the knowledge they need to make these predictions and prepare for the consequences. x A study of Colorado grasshoppers over 65 years shows climate change affects species size differently. Some species grow larger with early springs, while others shrink due to earlier vegetation drying. doi.org/g83r49 — Science X / Phys.org (@sciencex.bsky.social) 2025-01-31T16:32:21-05:00
First mouse with two male parents to reach adulthood
A team of stem cell scientists have successfully used embryonic stem cell engineering to create a bi-paternal mouse -- a mouse with two male parents -- that lived until adulthood. Their results, publishing on January 28, 2025, in the Cell Press journal Cell Stem Cell, describe how targeting a particular set of genes involved in reproduction allowed the researchers to overcome previously insurmountable challenges in unisexual reproduction in mammals. Scientists have attempted to create bi-paternal mice before, but the embryos developed only to a certain point and then stopped growing. Here, the investigators, led by corresponding author Wei Li of the Chinese Academy of Sciences (CAS) in Beijing, focused on targeting imprinting genes, which regulate gene expression in a number of ways. "This work will help to address a number of limitations in stem cell and regenerative medicine research," says Li.
How group size affects cooperation: Insights from brain science
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