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Overnight News Digest: Science Saturday, 6/7/25 [1]
['This Content Is Not Subject To Review Daily Kos Staff Prior To Publication.']
Date: 2025-06-07
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. x Photosynthesis is the most important reaction on Earth. In most plants, leaves are the primary solar collectors & sugar-makers. But leaves are vulnerable to herbivores. As #defense, some plants use chemicals; others use physical defenses, like this Solanum pyracanthos #Solanaceae #Botany 🌾🧪🌱 — 🌴 Scott Zona, Ph.D. 🌴 (@scottzona.bsky.social) 2025-06-02T10:30:00.000Z
'Hubble Tension' and the Nobel Prize Winner Who Wants to Replace Cosmology's Standard Model
Adam Riess won a Nobel Prize in Physics for helping discover that the universe's acceleration is expanding, remembers The Atlantic. But then theorists "proposed the existence of dark energy: a faint, repulsive force that pervades all of empty space... the final piece to what has since come to be called the 'standard model of cosmology.'" Riess thinks instead we should just replace the standard model:When I visited Riess, back in January, he mentioned he was looking forward to a data release from the Dark Energy Spectroscopic Instrument, a new observatory on Kitt Peak, in Arizona's portion of the Sonoran Desert. DESI has 5,000 robotically controlled optic fibers. Every 20 minutes, each of them locks onto a different galaxy in the deep sky. This process is scheduled to continue for a total of five years, until millions of galaxies have been observed, enough to map cosmic expansion across time... DESI's first release, last year, gave some preliminary hints that dark energy was stronger in the early universe, and that its power then began to fade ever so slightly. On March 19, the team followed up with the larger set of data that Riess was awaiting. It was based on three years of observations, and the signal that it gave was stronger: Dark energy appeared to lose its kick several billion years ago. This finding is not settled science, not even close. But if it holds up, a "wholesale revision" of the standard model would be required [says Colin Hill, a cosmologist at Columbia University. "The textbooks that I use in my class would need to be rewritten." And not only the textbooks — the idea that our universe will end in heat death has escaped the dull, technical world of academic textbooks. It has become one of our dominant secular eschatologies, and perhaps the best-known end-times story for the cosmos. And yet it could be badly wrong. If dark energy weakens all the way to zero, the universe may, at some point, stop expanding. It could come to rest in some static configuration of galaxies. Life, especially intelligent life, could go on for a much longer time than previously expected. If dark energy continues to fade, as the DESI results suggest is happening, it may indeed go all the way to zero, and then turn negative. Instead of repelling galaxies, a negative dark energy would bring them together into a hot, dense singularity, much like the one that existed during the Big Bang. This could perhaps be part of some larger eternal cycle of creation and re-creation. Or maybe not. The point is that the deep future of the universe is wide open...
"Many new observations will come, not just from DESI, but also from the new Vera Rubin Observatory in the Atacama Desert, and other new telescopes in space. On data-release days for years to come, the standard model's champions and detractors will be feverishly refreshing their inboxes..." And Riess tells The Atlantic he's disappointed when complacent theorists just tell him "Yeah, that's a really hard problem." He adds, "Sometimes, I feel like I am providing clues and killing time while we wait for the next Einstein to come along."
The Milky Way Might Not Crash Into the Andromeda Galaxy After All
New simulations suggest that the long-assumed collision between the Milky Way and Andromeda galaxies is not guaranteed, with the odds now estimated at just over 50% within the next 10 billion years. Factoring in other massive galaxies like M33 and the Large Magellanic Cloud revealed that their gravitational influence significantly alters the likelihood of a merger. ScienceAlert reports: The Milky Way and Andromeda are not, however, alone in this little corner of the cosmos. They belong to a small group of galaxies within a radius of about 5 million light-years from the Milky Way known as the Local Group. The Milky Way and Andromeda are the largest members, but there are quite a few other objects hanging out that need to be taken into consideration when modeling the future. [Astrophysicist Till Sawala of the University of Helsinki] and his colleagues took the latest data from the Hubble and Gaia space telescopes, and the most recent mass estimates for the four most massive objects in the Local Group -- the Milky Way, Andromeda, the Triangulum galaxy (M33), and the Large Magellanic Cloud (LMC). Then, they set about running simulations of the next 10 billion years, adding and removing galaxies to see how that changed the results. Their results showed that the presence of M33 and LMC dramatically altered the probability of a collision between the Milky Way and Andromeda. When it is just the two large spiral galaxies, the merger occurred in slightly less than half the simulation runs. The addition of M33 increased the merger probability to two in three. Taking M33 back out and adding LMC had the opposite effect, decreasing the probability to one in three. When all four galaxies were present, the probability of a merger between the Milky Way and Andromeda within 10 billion years is slightly more than 50 percent. "We find that there are basically two types of outcomes," Sawala said. "The Milky Way and Andromeda will either come close enough on their first encounter (first 'pericenter') that dynamical friction between the two dark matter haloes will drag the orbit to an eventual merger, which very likely happens before 10 billion years, or they do not come close enough, in which case dynamical friction is not effective, and they can still orbit for a very long time thereafter." "The main result of our work is that there is still significant uncertainty about the future evolution -- and eventual fate -- of our galaxy," Sawala added. "Of course, as a working astrophysicist, the best results are those that motivate future studies, and I think our paper provides motivation both for more comprehensive models and for more precise observations." The research has been published in Nature Astronomy.
Younger Generations Less Likely To Have Dementia, Study Suggests
An anonymous reader quotes a report from The Guardian: People born more recently are less likely to have dementia at any given age than earlier generations, research suggests, with the trend more pronounced in women. According to the World Health Organization, in 2021 there were 57 million people worldwide living with dementia, with women disproportionately affected. However, while the risk of dementia increases with age, experts have long stressed it is not not an inevitability of getting older. "Younger generations are less likely to develop dementia at the same age as their parents or grandparents, and that's a hopeful sign," said Dr Sabrina Lenzen, a co-author of the study from the University of Queensland's Centre for the Business and Economics of Health. But she added: "The overall burden of dementia will still grow as populations age, and significant inequalities remain -- especially by gender, education and geography." Writing in the journal Jama Network Open, researchers in Australia report how they analyzed data from 62,437 people aged 70 and over, collected from three long-running surveys covering the US, England and parts of Europe. The team used an algorithm that took into account participants' responses to a host of different metrics, from the difficulties they had with everyday activities to their scores on cognitive tests, to determine whether they were likely to have dementia. They then split the participants into eight different cohorts, representing different generations. Participants were also split into six age groups. As expected, the researchers found the prevalence of dementia increased by age among all birth cohorts, and in each of the three regions: UK, US and Europe. However, at a given age, people in more recent generations were less likely to have dementia compared with those in earlier generations. "For example, in the US, among people aged 81 to 85, 25.1% of those born between 1890-1913 had dementia, compared to 15.5% of those born between 1939-1943," said Lenzen, adding similar trends were seen in Europe and England, although less pronounced in the latter. The team said the trend was more pronounced in women, especially in Europe and England, noting that one reason may be increased access to education for women in the mid-20th century. However, taking into account changes in GDP, a metric that reflects broader economic shifts, did not substantially alter the findings. A number of factors could be contributing to the decline. "This is likely due to interventions such as compulsory education, smoking bans, and improvements in medical treatments for conditions such as heart disease, diabetes, and hearing loss, which are associated with dementia risk," said Prof Tara Spires-Jones, the director of the Centre for Discovery Brain Sciences at the University of Edinburgh.
James Webb Space Telescope Discovers the Earliest Galaxy Ever Seen
The James Webb Space Telescope has discovered the most distant galaxy ever observed, named MoM z14. NASA estimates it existed just 280 million years after the Big Bang. Space.com reports: Prior to the discovery of MoM z14, the galaxy holding the title of earliest and distant was JADES-GS-z14-0, which existed just 300 million years after the Big Bang, or around 13.5 billion years ago. This previous record galaxy has a redshift of z =14.32, while MoM z14 has a redshift of z = 14.44. There is a wider context to the observation of MoM z14 than the fact that it has broken the record for earliest known galaxy by 20 million years, though, as [explained team member and Yale University professor of Astronomy and Physics Pieter van Dokkum]. The researchers were able to determine that MoM z14 is around 50 times smaller than the Milky Way. The team also measured emission lines from the galaxy, indicating the presence of elements like nitrogen and carbon. "The emission lines are unusual; it indicates that the galaxy is very young, with a rapidly increasing rate of forming new stars," van Dokkum said. "There are also indications that there is not much neutral hydrogen gas surrounding the galaxy, which would be surprising: the very early universe is expected to be filled with neutral hydrogen. "That needs even better spectra and more galaxies, to investigate more fully." The presence of carbon and nitrogen in MoM z14 indicates that there are earlier galaxies to be discovered than this 13.52 billion-year-old example. That is because the very earliest galaxies in the universe and their stars were filled with the simplest elements in the cosmos, hydrogen and helium. Later galaxies would be populated by these heavier elements, which astronomers somewhat confusingly call "metal," as their stars forged them and then dispersed them in supernova explosions. The research has been published on arXiv.
Scientists find immune molecule that supercharges plant growth
Within the animal kingdom, a naturally produced molecule known as itaconate serves a prominent role in the immune system as a defensive agent against viruses and inflammation. Itaconate is classified as a metabolite, a natural compound that arises when organisms convert food into energy. While itaconate is well known in animals, its presence and functions in plants has been largely unexplored. Biologists at the University of California San Diego have now undertaken the first comprehensive exploration of itaconate's functions in plants. Researchers at the School of Biological Sciences, working with colleagues at Stanford University, Peking University, Carnegie Institute of Science and Universidad Nacional Autónoma de México, used chemical imaging and measurement techniques to not only prove that itaconate exists in plants, but to reveal its significant role in stimulating plant growth. "We found that itaconate is made in plants, particularly in growing cells," said study senior author Jazz Dickinson, an assistant professor in the Department of Cell and Developmental Biology. "Watering maize (corn) plants with itaconate made seedlings grow taller, which was exciting and encouraged us to investigate this metabolite further and understand how it interacts with plant proteins."
Black holes could act as natural supercolliders -- and help uncover dark matter
As federal funding cuts impact decades of research, scientists could turn to black holes for cheaper, natural alternatives to expensive facilities searching for dark matter and similarly elusive particles that hold clues to the universe's deepest secrets, a new Johns Hopkins study of supermassive black holes suggests. The findings could help complement multi-billion-dollar expenses and decades of construction needed for research complexes like Europe's Large Hadron Collider, the largest and highest-energy particle accelerator in the world. "One of the great hopes for particle colliders like the Large Hadron Collider is that it will generate dark matter particles, but we haven't seen any evidence yet," said study co-author Joseph Silk, an astrophysics professor at Johns Hopkins University and the University of Oxford, UK. "That's why there are discussions underway to build a much more powerful version, a next-generation supercollider. But as we invest $30 billion and wait 40 years to build this supercollider — nature may provide a glimpse of the future in super massive black holes."
Millions of new solar system objects to be found and 'filmed in technicolor' -- studies predict
A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's University Belfast, have revealed new research showing that millions of new solar system objects will be detected by a brand-new facility, which is expected to come online later this year. The NSF-DOE Vera C. Rubin Observatory is set to revolutionize our knowledge of the solar system's "small bodies" -- asteroids, comets and other minor planets. The Rubin Observatory, under construction on the Cerro Pachón ridge in northern Chile, features the 8.4-meter Simonyi Survey Telescope with a unique three-mirror design capable of surveying the entire visible sky every few nights. At its heart is the world's largest digital camera -- the 3.2 gigapixel Legacy Survey of Space and Time (LSST) Camera -- covering a 9.6 square-degree field of view with six filters, roughly 45 times the area of the full moon. Together, this "wide-fast-deep" system will generate 20 terabytes of data every night -- creating an unprecedented time-lapse "movie" of the cosmos over the next 10 years, and an incredibly powerful dataset with which to map the solar system.
Scientists uncover 230 giant ocean viruses that hijack photosynthesis
Scientists have uncovered over 200 new giant viruses lurking in ocean waters that not only help shape marine ecosystems but also manipulate photosynthesis in algae. These massive viruses once nearly invisible to science are now being exposed using powerful supercomputing and a new tool called BEREN. By studying these viruses, researchers hope to predict harmful algal blooms and even explore biotech applications from the novel enzymes found in these viral genomes. Giant viruses play a role in the survival of single-celled marine organisms called protists. These include algae, amoeba, and flagellates, that form the base of ocean food webs. And since these protists form an important part of the food chain, these large DNA viruses are often responsible for various public health hazards, including harmful algal blooms. A new study from scientists at the Rosenstiel School of Marine, Atmospheric and Earth Science may help unravel the many types of viruses present in our waterways and oceans. This knowledge could help local leaders better prepare for when a harmful algal bloom may be impacting their coastline or if any other viruses are present in local bays, rivers or lakes.
Scientists say next few years vital to securing the future of the West Antarctic Ice Sheet
Collapse of the West Antarctic Ice Sheet could be triggered with very little ocean warming above present-day, leading to a devastating four metres of global sea level rise to play out over hundreds of years according to a study now published in Communications Earth & Environment, co-authored by the Potsdam Institute for Climate Impact Research (PIK). However, the authors emphasise that immediate actions to reduce emissions could still avoid a catastrophic outcome. Scientists at PIK, the Norwegian research centre NORCE and Northumbria University in the United Kingdom conducted model simulations going back 800,000 years to give an extended view of how the vast Antarctic Ice Sheet has responded in the past to the Earth's climate as it moved between cold "glacial" and warmer "interglacial" periods. "In the past 800,000 years, the Antarctic Ice Sheet has had two stable states that it has repeatedly tipped between. One, with the West Antarctic Ice Sheet in place, is the state we are currently in. The other state is where the West Antarctic Ice Sheet has collapsed," lead author David Chandler from NORCE commented.
Coastal flooding more frequent than previously thought
Flooding in coastal communities is happening far more often than previously thought, according to a new study from North Carolina State University and the University of North Carolina at Chapel Hill. The study also found major flaws with the widely used approach of using marine water level data to capture instances of flooding. "Government agencies and researchers use data from tide gauges to measure water levels in coastal areas, then use that data to estimate flood frequency in the region," says Miyuki Hino, corresponding author of a paper on the study and assistant professor of city and regional planning at UNC. "Those estimates are used both to assess how often flooding has taken place and to predict how often flooding may take place in the future. However, our study shows that this approach does not accurately capture how often flooding takes place or how long those floods last." "Due to sea-level rise, we're now seeing flooding in coastal areas outside of extreme storms like hurricanes," says Katherine Anarde, co-author of the paper and an assistant professor of coastal engineering at NC State. "There can be flooding during everyday rain showers or at high tide on sunny days. It's important that the methodology we use to monitor and predict flooding reflects this reality, since sea-level rise means these flooding events are going to become even more common.
Extreme weather is wiping out amphibians—Here’s where it’s worst
Frogs, salamanders, and other amphibians are not just battling habitat loss and pollution they're now also contending with increasingly brutal heat waves and droughts. A sweeping 40-year study shows a direct link between the rise in extreme weather events and the growing number of species landing on the endangered list. Europe, the Amazon, and Madagascar have become danger zones, with amphibians unable to adapt quickly enough. But there s hope scientists are calling for focused conservation efforts like habitat restoration and micro-refuges to help these vulnerable creatures survive.
Baboons walk in line for friendship, not survival, new study finds
Researchers at Swansea University have discovered that baboons walk in lines, not for safety or strategy, but simply to stay close to their friends. Baboons often travel in structured line formations known as 'progressions' as they move through their home range. Previous studies offered conflicting explanations for this behavior. Some proposed that the order was random, while others argued that baboons strategically positioned themselves, with vulnerable individuals walking in the center to reduce their risk of attack. Now, using high-resolution GPS tracking, researchers from Swansea University have re-examined this behavior in a group of wild chacma baboons (Papio ursinus) on South Africa's Cape Peninsula. Their findings, published in the journal Behavioral Ecology, reveal that baboon movement patterns are driven by social bonds rather than survival strategies.
Brain training game offers new hope for drug-free pain management
A trial of an interactive game that trains people to alter their brain waves has shown promise as a treatment for nerve pain -- offering hope for a new generation of drug-free treatments. The PainWaive technology, developed by UNSW Sydney researchers, teaches users how to regulate abnormal brain activity linked to chronic nerve pain, offering a potential in-home, non-invasive alternative to opioids. A recent trial of the technology, led by Professor Sylvia Gustin and Dr Negin Hesam-Shariati from UNSW Sydney's NeuroRecovery Research Hub, has delivered promising results, published in the Journal of Pain.
Being in nature can help people with chronic back pain manage their condition
Researchers asked patients, some of whom had experienced lower back pain for up to 40 years, if being in nature helped them coped better with their lower back pain. They found that people able to spend time in their own gardens saw some health and wellbeing benefits. However, those able to immerse themselves in larger green spaces such as forests felt even more positive, as they were able to lose themselves in the environment and focus more on that than their pain levels. The researchers have recommended trying to incorporate time spent in nature into people's treatments plans, and are also using their findings to develop virtual reality interventions that allow people to experience some of the benefits of being in nature without the need to travel anywhere if they are unable to do so.
Tea, berries, dark chocolate and apples could lead to a longer life span, study shows
Eating a colorful variety of flavonoid-rich foods like tea, berries, dark chocolate, and apples may significantly lower your risk of chronic diseases and even help you live longer. A major study tracking over 120,000 people for more than a decade found that it's not just the quantity but the diversity of flavonoids that offers the biggest health benefits.
Eating an array of smaller fish could be nutrient-dense solution to overfishing
To satisfy the seafood needs of billions of people, offering them access to a more biodiverse array of fish creates opportunities to mix-and-match species to obtain better nutrition from smaller portions of fish. The right combination of certain species can provide up to 60% more nutrients than if someone ate the same quantity of even a highly nutritious species, according to an analysis by Cornell University researchers. "This research hopefully highlights the importance of biodiversity, not just because of a moral quandary that we're causing a mass extinction on Earth, but also because biodiversity can lead to better outcomes for fishery sustainability," said first author Sebastian Heilpern, a postdoctoral fellow who has done previous research related to this in the Amazon River.
Why your diet might be making you sad—Especially if you're a man
New research reveals a surprising downside to calorie-cutting diets: a link to higher levels of depressive symptoms, especially in men and those who are overweight. Despite popular beliefs that healthy eating boosts mental wellness, real-life restrictive diets may be nutritionally unbalanced, potentially harming emotional and cognitive health.
Researchers develop innovative model to study sense of smell
Using a newly devised, three-dimensional model to study the regeneration of nerve tissue in the nose, researchers at Tufts University School of Medicine and the Graduate School of Biomedical Sciences (GSBS) and colleagues have discovered that one type of stem cell thought to be dormant may play a more significant role in preserving the sense of smell than originally believed. Unlike cells in the central nervous system, sensory neurons in the nasal cavity have a remarkable ability to regenerate throughout life despite near constant exposure to the outside environment. Viral infections such as COVID-19, exposure to toxins, or even aging itself can diminish their function or the ability of these cells to replicate, which can lead to a partial or complete loss of smell. The team of researchers devised a new, easy-to-create, three-dimensional olfactory tissue mouse model or organoid to help scientists better study how neurons are continually formed in the nose and why this process might decline in disease and aging.
3,500-year-old graves reveal secrets that rewrite bronze age history
The bioarchaeological investigation of the Bronze Age cemetery of Tiszafüred-Majoroshalom has shed new light on an important period in Central European history. An international research team - led by Tamás Hajdu, associate professor at the Department of Anthropology at ELTE and Claudio Cavazzuti, senior assistant professor at the University of Bologna, has shown that around 1500 BC, radical changes occurred in people's lives: they ate and lived differently, and the social system was also reorganized. The multidisciplinary research was based on the Bronze Age cemetery excavated at Tiszafüred-Majoroshalom, which was used both in the Middle Bronze Age (Füzesabony culture) and in the Late Bronze Age (Tumulus culture). These finds allowed the researchers to compare the subsistence strategies before and after the change of era. The research team, led by Tamás Hajdu and supported by the Hungarian National Research, Development and Innovation Office, sought to answer whether the spread of the Tumulus culture meant the arrival of new groups, or whether the autochtonous people continued their lives, and only the material culture changed. In addition, they also examined whether the archaeologically observed settlement changes around 1500 BC indicate a change in lifestyle: whether people began to follow a lifestyle involving mainly animal husbandry and frequent migration instead of settled farming.
New mRNA vaccine is more effective and less costly to develop
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