An anonymous reader quotes a report from the New York Times: Last year, Jaume Pellicer led a team of fellow scientists into a forest on Grande Terre, an island east of Australia. They were in search of a fern called Tmesipteris oblanceolata. Standing just a few inches tall, it was not easy to find on the forest floor. "It doesn't catch the eye," said Dr. Pellicer, who works at the Botanical Institute of Barcelona in Spain. "You would probably step on it and not even realize it." The scientists eventually managed to spot the nondescript fern. When Dr. Pellicer and his colleagues studied it in the lab, they discovered it held an extraordinary secret. Tmesipteris oblanceolata has the largest known genome on Earth. As the researchers described in a study published on Friday, the fern's cells contain more than 50 times as much DNA as ours do. [The analysis revealed the species T. oblanceolata to have a record-breaking genome size of 160.45 Gbp, which is about 7% larger than that of P. japonica (148.89 Gbp). For comparison, the human genome contains about 3.1 Gbp distributed across 23 chromosomes and when stretched out like a ball of yarn, the length of DNA in each cell only measures about 2m.] "Surprisingly, having a larger genome is usually not an advantage," notes Phys.org in a report. "In the case of plants, species possessing large amounts of DNA are restricted to being slow growing perennials, are less efficient at photosynthesis (the process by which plants convert the sun's energy into sugars) and require more nutrients (especially nitrogen and phosphates) to grow and compete successfully with their smaller-genomed neighbors. In turn, such effects may influence the ability of a plant to adapt to climate change and their risk of extinction." "In animals, some of the largest genomes include the marbled lungfish (Protopterus aethiopicus) at 129.90 Gbp and the Neuse River waterdog (Necturus lewisi) at 117.47 Gbp," reports Phys.org. "In stark contrast, six of the largest-known eukaryotic genomes are held by plants, including the European mistletoe (Viscum album) at 100.84 Gbp."

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The retraction rate for European biomedical-science papers increased fourfold between 2000 and 2021, a study of thousands of retractions has found. Nature: Two-thirds of these papers were withdrawn for reasons relating to research misconduct, such as data and image manipulation or authorship fraud. These factors accounted for an increasing proportion of retractions over the roughly 20-year period, the analysis suggests. "Our findings indicate that research misconduct has become more prevalent in Europe over the last two decades," write the authors, led by Alberto RuanoâRavina, a public-health researcher at the University of Santiago de Compostela in Spain. Other research-integrity specialists point out that retractions could be on the rise because researchers and publishers are getting better at investigating and identifying potential misconduct. There are more people working to spot errors and new digital tools to screen publications for suspicious text or data. Scholarly publishers have faced increased pressure to clear up the literature in recent years as sleuths have exposed cases of research fraud, identified when peer review has been compromised and uncovered the buying and selling of research articles. Last year saw a record 10,000 papers retracted. Although misconduct is a leading cause of retractions, it is not always responsible: some papers are retracted when authors discover honest errors in their work.

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Studies show ultraprocessed food "encourages overeating but may leave the eater undernourished," writes Ars Technica. But the food industry's response has been "a ferocious campaign against regulation." In part it has used the same lobbying playbook as its fight against labeling and taxation of "junk food" high in calories: big spending to influence policymakers. FT analysis of US lobbying data from non-profit Open Secrets found that food and soft drinks-related companies spent $106 million on lobbying in 2023, almost twice as much as the tobacco and alcohol industries combined. Last year's spend was 21 percent higher than in 2020, with the increase driven largely by lobbying relating to food processing as well as sugar. In an echo of tactics employed by cigarette companies, the food industry has also attempted to stave off regulation by casting doubt on the research of scientists like [Brazilian nutritional scientist Carlos] Monteiro. "The strategy I see the food industry using is deny, denounce, and delay," says Barry Smith, director of the Institute of Philosophy at the University of London and a consultant for companies on the multisensory experience of food and drink. So far the strategy has proved successful. Just a handful of countries, including Belgium, Israel, and Brazil, currently refer to UPFs in their dietary guidelines. But as the weight of evidence about UPFs grows, public health experts say the only question now is how, if at all, it is translated into regulation. "There's scientific agreement on the science," says Jean Adams, professor of dietary public health at the MRC Epidemiology Unit at the University of Cambridge. "It's how to interpret that to make a policy that people aren't sure of." [...] As researchers have learned more about the link between UPFs and poor health outcomes, companies have remained largely silent about these risks, leaving trade bodies that advocate on their behalf to argue loudly against the validity of the research.

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An anonymous reader quotes a report from Ars Technica: A team of physicists has discovered that it's possible to build a real, actual, physical warp drive and not break any known rules of physics. One caveat: the vessel doing the warping can't exceed the speed of light, so you're not going to get anywhere interesting any time soon. But this research still represents an important advance in our understanding of gravity. [...] In a paper accepted for publication in the journal Classical and Quantum Gravity, [an international team of physicists led by Jared Fuchs at the University of Alabama in Huntsville] dug deep into relativity to explore if any version of a warp drive could work. The equations of general relativity are notoriously difficult to solve, especially in complex cases such as a warp drive. So the team turned to software algorithms; instead of trying to solve the equations by hand, they explored their solutions numerically and verified that they conformed to the energy conditions. The team did not actually attempt to construct a propulsion device. Instead, they explored various solutions to general relativity that would allow travel from point to point without a vessel undergoing any acceleration or experiencing any overwhelming gravitational tidal forces within the vessel, much to the comfort of any imagined passengers. They then checked whether these solutions adhered to the energy conditions that prevent the use of exotic matter. The researchers did indeed discover a warp drive solution: a method of manipulating space so that travelers can move without accelerating. There is no such thing as a free lunch, however, and the physicality of this warp drive does come with a major caveat: the vessel and passengers can never travel faster than light. Also disappointing: the fact that the researchers behind the new work don't seem to bother with figuring out what configurations of matter would allow the warping to happen. The findings have been published in the journal Classical and Quantum Gravity.

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C'est impressionnant et - il faut quand même l'avouer - un peu flippant.
(Permalink)

Borrowing the idea of "bug bounties" from the technology industry could provide a systematic way to detect and correct the errors that litter the scientific literature. Malte Elson, writing at Nature: Just as many industries devote hefty funding to incentivizing people to find and report bugs and glitches, so the science community should reward the detection and correction of errors in the scientific literature. In our industry, too, the costs of undetected errors are staggering. That's why I have joined with meta-scientist Ian Hussey at the University of Bern and psychologist Ruben Arslan at Leipzig University in Germany to pilot a bug-bounty programme for science, funded by the University of Bern. Our project, Estimating the Reliability and Robustness of Research (ERROR), pays specialists to check highly cited published papers, starting with the social and behavioural sciences (see go.nature.com/4bmlvkj). Our reviewers are paid a base rate of up to 1,000 Swiss francs (around US$1,100) for each paper they check, and a bonus for any errors they find. The bigger the error, the greater the reward -- up to a maximum of 2,500 francs. Authors who let us scrutinize their papers are compensated, too: 250 francs to cover the work needed to prepare files or answer reviewer queries, and a bonus 250 francs if no errors (or only minor ones) are found in their work. ERROR launched in February and will run for at least four years. So far, we have sent out almost 60 invitations, and 13 sets of authors have agreed to have their papers assessed. One review has been completed, revealing minor errors. I hope that the project will demonstrate the value of systematic processes to detect errors in published research. I am convinced that such systems are needed, because current checks are insufficient. Unpaid peer reviewers are overburdened, and have little incentive to painstakingly examine survey responses, comb through lists of DNA sequences or cell lines, or go through computer code line by line. Mistakes frequently slip through. And researchers have little to gain personally from sifting through published papers looking for errors. There is no financial compensation for highlighting errors, and doing so can see people marked out as troublemakers.

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Microplastics have been found in human testicles, with researchers saying the discovery might be linked to declining sperm counts in men. From a report: The scientists tested 23 human testes, as well as 47 testes from pet dogs. They found microplastic pollution in every sample. The human testicles had been preserved and so their sperm count could not be measured. However, the sperm count in the dogs' testes could be assessed and was lower in samples with higher contamination with PVC. The study demonstrates a correlation but further research is needed to prove microplastics cause sperm counts to fall. Sperm counts in men have been falling for decades, with chemical pollution such as pesticides implicated by many studies. Microplastics have also recently been discovered in human blood, placentas and breast milk, indicating widespread contamination of people's bodies. The impact on health is as yet unknown but microplastics have been shown to cause damage to human cells in the laboratory. Vast amounts of plastic waste are dumped in the environment and microplastics have polluted the entire planet, from the summit of Mount Everest to the deepest oceans. People are known to consume the tiny particles via food and water as well as breathing them in. The particles could lodge in tissue and cause inflammation, as air pollution particles do, or chemicals in the plastics could cause harm. In March, doctors warned of potentially life-threatening effects after finding a substantially raised risk of stroke, heart attack and earlier death in people whose blood vessels were contaminated with microscopic plastics.

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Hopes that replacement fuels for airplanes will slash carbon pollution are misguided and support for these alternatives could even worsen the climate crisis, a new report has warned. The Guardian: There is currently "no realistic or scalable alternative" to standard kerosene-based jet fuels, and touted "sustainable aviation fuels" are well off track to replace them in a timeframe needed to avert dangerous climate change, despite public subsidies, the report by the Institute for Policy Studies, a progressive thinktank, found. "While there are kernels of possibility, we should bring a high level of skepticism to the claims that alternative fuels will be a timely substitute for kerosene-based jet fuels," the report said. Chuck Collins, co-author of the report, said: "To bring these fuels to the scale needed would require massive subsidies, the trade-offs would be unacceptable and would take resources aware from more urgent decarbonization priorities. It's a huge greenwashing exercise by the aviation industry. It's magical thinking that they will be able to do this." In the US, Joe Biden's administration has set a goal for 3bn gallons of sustainable aviation fuel, which is made from non-petroleum sources such as food waste, woody biomass and other feedstocks, to be produced by 2030, which it said will cut aviation's planet-heating emissions by 20%.

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Philip Ball reports via Scientific American: Thomas Gingeras did not intend to upend basic ideas about how the human body works. In 2012 the geneticist, now at Cold Spring Harbor Laboratory in New York State, was one of a few hundred colleagues who were simply trying to put together a compendium of human DNA functions. Their Âproject was called ENCODE, for the Encyclopedia of DNA Elements. About a decade earlier almost all of the three billion DNA building blocks that make up the human genome had been identified. Gingeras and the other ENCODE scientists were trying to figure out what all that DNA did. The assumption made by most biologists at that time was that most of it didn't do much. The early genome mappers estimated that perhaps 1 to 2 percent of our DNA consisted of genes as classically defined: stretches of the genome that coded for proteins, the workhorses of the human body that carry oxygen to different organs, build heart muscles and brain cells, and do just about everything else people need to stay alive. Making proteins was thought to be the genome's primary job. Genes do this by putting manufacturing instructions into messenger molecules called mRNAs, which in turn travel to a cell's protein-making machinery. As for the rest of the genome's DNA? The "protein-coding regions," Gingeras says, were supposedly "surrounded by oceans of biologically functionless sequences." In other words, it was mostly junk DNA. So it came as rather a shock when, in several 2012 papers in Nature, he and the rest of the ENCODE team reported that at one time or another, at least 75 percent of the genome gets transcribed into RNAs. The ENCODE work, using techniques that could map RNA activity happening along genome sections, had begun in 2003 and came up with preliminary results in 2007. But not until five years later did the extent of all this transcription become clear. If only 1 to 2 percent of this RNA was encoding proteins, what was the rest for? Some of it, scientists knew, carried out crucial tasks such as turning genes on or off; a lot of the other functions had yet to be pinned down. Still, no one had imagined that three quarters of our DNA turns into RNA, let alone that so much of it could do anything useful. Some biologists greeted this announcement with skepticism bordering on outrage. The ENCODE team was accused of hyping its findings; some critics argued that most of this RNA was made accidentally because the RNA-making enzyme that travels along the genome is rather indiscriminate about which bits of DNA it reads. Now it looks like ENCODE was basically right. Dozens of other research groups, scoping out activity along the human genome, also have found that much of our DNA is churning out "noncoding" RNA. It doesn't encode proteins, as mRNA does, but engages with other molecules to conduct some biochemical task. By 2020 the ENCODE project said it had identified around 37,600 noncoding genes -- that is, DNA stretches with instructions for RNA molecules that do not code for proteins. That is almost twice as many as there are protein-coding genes. Other tallies vary widely, from around 18,000 to close to 96,000. There are still doubters, but there are also enthusiastic biologists such as Jeanne Lawrence and Lisa Hall of the University of Massachusetts Chan Medical School. In a 2024 commentary for the journal Science, the duo described these findings as part of an "RNA revolution." What makes these discoveries revolutionary is what all this noncoding RNA -- abbreviated as ncRNA -- does. Much of it indeed seems involved in gene regulation: not simply turning them off or on but also fine-tuning their activity. So although some genes hold the blueprint for proteins, ncRNA can control the activity of those genes and thus ultimately determine whether their proteins are made. This is a far cry from the basic narrative of biology that has held sway since the discovery of the DNA double helix some 70 years ago, which was all about DNA leading to proteins. "It appears that we may have fundamentally misunderstood the nature of genetic programming," wrote molecular biologists Kevin Morris of Queensland University of Technology and John Mattick of the University of New South Wales in Australia in a 2014 article. Another important discovery is that some ncRNAs appear to play a role in disease, for example, by regulating the cell processes involved in some forms of cancer. So researchers are investigating whether it is possible to develop drugs that target such ncRNAs or, conversely, to use ncRNAs themselves as drugs. If a gene codes for a protein that helps a cancer cell grow, for example, an ncRNA that shuts down the gene might help treat the cancer.

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Carl Zimmer reports via the New York Times: Ever since the discovery of whale songs almost 60 years ago, scientists have been trying to decipher their lyrics. Are the animals producing complex messages akin to human language? Or sharing simpler pieces of information, like dancing bees do? Or are they communicating something else we don't yet understand? In 2020, a team of marine biologists and computer scientists joined forces to analyze the click-clacking songs of sperm whales, the gray, block-shaped leviathans that swim in most of the world's oceans. On Tuesday, the scientists reported that the whales use a much richer set of sounds than previously known, which they called a "sperm whale phonetic alphabet." In the study published in the journal Nature Communications, researchers found that sperm whales communicate using sequences of clicks, called codas, that exhibit contextual and combinatorial structure. MIT News reports: The researchers identified something of a "sperm whale phonetic alphabet," where various elements that researchers call "rhythm," "tempo," "rubato," and "ornamentation" interplay to form a vast array of distinguishable codas. For example, the whales would systematically modulate certain aspects of their codas based on the conversational context, such as smoothly varying the duration of the calls -- rubato -- or adding extra ornamental clicks. But even more remarkably, they found that the basic building blocks of these codas could be combined in a combinatorial fashion, allowing the whales to construct a vast repertoire of distinct vocalizations. [...] By developing new visualization and data analysis techniques, the CSAIL researchers found that individual sperm whales could emit various coda patterns in long exchanges, not just repeats of the same coda. These patterns, they say, are nuanced, and include fine-grained variations that other whales also produce and recognize. "One of the intriguing aspects of our research is that it parallels the hypothetical scenario of contacting alien species. It's about understanding a species with a completely different environment and communication protocols, where their interactions are distinctly different from human norms," says Pratyusha Sharma, an MIT PhD student in EECS, CSAIL affiliate, and the study's lead author. "We're exploring how to interpret the basic units of meaning in their communication. This isn't just about teaching animals a subset of human language, but decoding a naturally evolved communication system within their unique biological and environmental constraints. Essentially, our work could lay the groundwork for deciphering how an 'alien civilization' might communicate, providing insights into creating algorithms or systems to understand entirely unfamiliar forms of communication."

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Several large-scale, human-driven changes to the planet -- including climate change, the loss of biodiversity and the spread of invasive species -- are making infectious diseases more dangerous to people, animals and plants, according to a new study. From a report: Scientists have documented these effects before in more targeted studies that have focused on specific diseases and ecosystems. For instance, they have found that a warming climate may be helping malaria expand in Africa and that a decline in wildlife diversity may be boosting Lyme disease cases in North America. But the new research, a meta-analysis of nearly 1,000 previous studies, suggests that these patterns are relatively consistent around the globe and across the tree of life. "It's a big step forward in the science," said Colin Carlson, a biologist at Georgetown University, who was not an author of the new analysis. "This paper is one of the strongest pieces of evidence that I think has been published that shows how important it is health systems start getting ready to exist in a world with climate change, with biodiversity loss." In what is likely to come as a more surprising finding, the researchers also found that urbanization decreased the risk of infectious disease. The new analysis, which was published in Nature on Wednesday, focused on five "global change drivers" that are altering ecosystems across the planet: biodiversity change, climate change, chemical pollution, the introduction of nonnative species and habitat loss or change.

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Science Alert reports that a team of researchers found "that changes in glucose metabolism could help cancer grow by temporarily disabling a gene that protects us from tumors called BRCA2." The team first examined people who inherited one faulty copy of BRCA2. They found that cells from these people were more sensitive to methylglyoxal (MGO), which is produced when cells break down glucose for energy in the process of glycolysis. Glycolysis generates over 90 percent of the MGO in cells, which a pair of enzymes typically keep to minimal levels. In the event they can't keep up, high MGO levels can lead to the formation of harmful compounds that damage DNA and proteins. In conditions like diabetes, where MGO levels are elevated due to high blood sugar, these harmful compounds contribute to disease complications. The researchers discovered that MGO can temporarily disable the tumor-suppressing functions of the BRCA2 protein, resulting in mutations linked to cancer development... As the BRCA2 allele isn't permanently inactivated, functional forms of the protein it produces can later return to normal levels. But cells repeatedly exposed to MGO may continue to accumulate cancer-causing mutations whenever existing BRCA2 protein production fails. Overall, this suggests that changes in glucose metabolism can disrupt BRCA2 function via MGO, contributing to the development and progression of cancer... This new information may lead to strategies for cancer prevention or early detection. "Methylglyoxal can be easily detected by a blood test for HbA1C, which could potentially be used as a marker," Venkitaraman says. "Furthermore, high methylglyoxal levels can usually be controlled with medicines and a good diet, creating avenues for proactive measures against the initiation of cancer." Their research has been published in Cell.

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An anonymous reader shared this report from the Guardian: Newly deciphered passages from a papyrus scroll that was buried beneath layers of volcanic ash after the AD79 eruption of Mount Vesuvius may have shed light on the final hours of Plato, a key figure in the history of western philosophy. In a groundbreaking discovery, the ancient scroll was found to contain a previously unknown narrative detailing how the Greek philosopher spent his last evening, describing how he listened to music played on a flute by a Thracian slave girl. Despite battling a fever and being on the brink of death, Plato — who was known as a disciple of Socrates and a mentor to Aristotle, and who died in Athens around 348BC — retained enough lucidity to critique the musician for her lack of rhythm, the account suggests.... In a presentation of the research findings at the National Library of Naples, Prof Graziano Ranocchia, of the University of Pisa, who spearheaded the team responsible for unearthing the carbonised scroll, described the discovery as an "extraordinary outcome that enriches our understanding of ancient history". He said: "Thanks to the most advanced imaging diagnostic techniques, we are finally able to read and decipher new sections of texts that previously seemed inaccessible... For the first time, we have been able to read sequences of hidden letters from the papyri that were enfolded within multiple layers, stuck to each other over the centuries, through an unrolling process using a mechanical technique that disrupted whole fragments of text."

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"A leap in our ability to see the chemistry of matter in three-dimensions at the nanoscale was achieved, allowing scientists to understand how nanomaterials are chemically arranged," writes Slashdot reader Hovden: Traditionally, seeing matter at the smallest sizes requires too many high-energy electrons for 3D chemical imaging. The high beam exposure destroys the specimen before an experiment is completed. Even larger doses are required to achieve high resolution. Thus, chemical mapping in 3D has been unachievable except at lower resolution with the most radiation-hard materials. High-resolution 3D chemical imaging is now achievable near or below one-nanometer resolution. A team from Dow Chemical and the University of Michigan used a newly introduced method, called multi-modal data fusion, high-resolution chemical tomography, that provides 99% less dose by linking information encoded within both elastic and inelastic scattered signals. The researchers showed sub-nanometer 3D resolution of chemistry is measurable for a broad class of geometrically and compositionally complex materials. "Here are the pretty pictures," adds long-time Slashdot reader thoper. Phys.org also has this quote from Robert Hovden, an associate professor of materials science and engineering at the University of Michigan and corresponding author on the study published in Nature Communications. "Seeing invisible worlds, far smaller than the wavelengths of light, is absolutely critical to understanding the matter we are engineering at the nanoscale, not just in 2D but in 3D as well."

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An anonymous reader shares a report: Harvard geneticist David Sinclair, who has said his "biological age" is roughly a decade younger than his actual one, has put forward his largely unlined face as a spokesman for the longevity movement. The 54-year-old has built his brand on the idea that aging is a treatable disease. The notion has proven so seductive that legions of acolytes follow his online postings about his research and the cocktails of supplements he consumes to stave off the inevitable. His social-media accounts are a platform for assertions that his work is pushing nearer to a fountain of youth. He claimed last year that a gene therapy invented in his Harvard lab and being developed by a company he co-founded, Life Biosciences, had reversed aging and restored vision in monkeys. "Next up: age reversal in humans," he wrote on X and Instagram. On Feb. 29, in the eyes of many other scientists working to unlock the mysteries of aging, he went too far. Another company he co-founded, Animal Biosciences, quoted him in a press release saying that a supplement it had developed had reversed aging in dogs. Scientists who study aging can't even agree on what it means to "reverse" aging, much less how to measure it. The response was swift and harsh. The Academy for Health and Lifespan Research, a group of about 60 scientists that Sinclair co-founded and led, was hit with a cascade of resignations by members outraged by his claims. One scientist who quit referred to Sinclair on X as a "snake oil salesman." Days later, in a tense video meeting, the academy's five other board members pressed Sinclair to resign as president. He contended that the press release contained an inaccurate quote, according to people who were in the meeting, but he later stepped down. Sinclair's work is published regularly in top-tier scientific journals and has brought attention to an emerging field vying for credibility and funding. He has parlayed his research into hundreds of millions of dollars of investment in various companies, more than 50 patents and prominence as a longevity influencer. Along the way, his claims -- especially in his social-media posts, interviews and his book -- have drawn criticism from scientists who have accused him of hyping his research and extolling unproven products, including some from companies in which he had a financial interest. "My lab's ideas and findings are typically ahead of the curve, which is why some peers might feel the research is overstated at the time," Sinclair said to The Wall Street Journal in an email. "I stand behind my track record as a trusted scientist in one of the most competitive professions of all." He said he doesn't engage with social-media critics, including those calling him a snake oil salesman, and that many such comments are "nothing more than mischaracterizations."

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Long-time Slashdot reader lee1 shares "an interesting essay on the history of orthodoxy in quantum mechanics," published this week in Nature. Its title? "'Shut up and calculate': how Einstein lost the battle to explain quantum reality." [T]he views of Danish physicist Niels Bohr came to dominate. Albert Einstein famously disagreed with him and, in the 1920s and 1930s, the two locked horns in debate. A persistent myth was created that suggests Bohr won the argument by browbeating the stubborn and increasingly isolated Einstein into submission. Acting like some fanatical priesthood, physicists of Bohr's 'church' sought to shut down further debate. They established the 'Copenhagen interpretation', named after the location of Bohr's institute, as a dogmatic orthodoxy. My latest book Quantum Drama, co-written with science historian John Heilbron, explores the origins of this myth and its role in motivating the singular personalities that would go on to challenge it. Their persistence in the face of widespread indifference paid off, because they helped to lay the foundations for a quantum-computing industry expected to be worth tens of billions by 2040... The Einstein-Bohr dispute raised larger issues, according to the article. "What is the purpose of physics? Is its main goal to gain ever-more-detailed descriptions and control of phenomena, regardless of whether physicists can understand these descriptions? Or, rather, is it a continuing search for deeper and deeper insights into the nature of physical reality? "Einstein preferred the second answer," the articcle notes — and concluded that quantum mechanics was incomplete: Unlike Bohr, Einstein had established no school of his own. He had rather retreated into his own mind, in vain pursuit of a theory that would unify electromagnetism and gravity, and so eliminate the need for quantum mechanics altogether. He referred to himself as a "lone traveler". In 1948, U.S. theoretical physicist J. Robert Oppenheimer remarked to a reporter at Time magazine that the older Einstein had become "a landmark, but not a beacon". Subsequent readings of this period in quantum history promoted a persistent and widespread suggestion that the Copenhagen interpretation had been established as the orthodox view... When learning quantum mechanics as a graduate student at Harvard University in the 1950s, US physicist N. David Mermin recalled vivid memories of the responses that his conceptual enquiries elicited from his professors, whom he viewed as 'agents of Copenhagen'. "You'll never get a PhD if you allow yourself to be distracted by such frivolities," they advised him, "so get back to serious business and produce some results. Shut up, in other words, and calculate." The book argues that actually the physics world suffered from "a subtly different kind of orthodoxy" — an indifference to "foundational questions" outside the mainstream — but that the "myth" motivated projects and experiments. "Although the wider physics community still considered testing quantum mechanics to be a fringe science and mostly a waste of time, exposing a hitherto unsuspected phenomenon — quantum entanglement and non-locality — was not..."

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"For the first time in at least a billion years, two lifeforms have merged into a single organism," reports the Independent: The process, called primary endosymbiosis, has only happened twice in the history of the Earth, with the first time giving rise to all complex life as we know it through mitochondria. The second time that it happened saw the emergence of plants. Now, an international team of scientists have observed the evolutionary event happening between a species of algae commonly found in the ocean and a bacterium... The process involves the algae engulfing the bacterium and providing it with nutrients, energy and protection in return for functions that it could not previously perform — in this instance, the ability to "fix" nitrogen from the air. The algae then incorporates the bacterium as an internal organ called an organelle, which becomes vital to the host's ability to function. The researchers from the U.S. and Japan who made the discovery said it will offer new insights into the process of evolution, while also holding the potential to fundamentally change agriculture. "This system is a new perspective on nitrogen fixation, and it might provide clues into how such an organelle could be engineered into crop plants," said Dr Coale. Two papers detailing the research were published in the scientific journals Science and Cell. Thanks to Slashdot reader fjo3 for sharing the news.

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Noise pollution from traffic stunts growth in baby birds, even while inside the egg, research has found. From a report: Unhatched birds and hatchlings that are exposed to noise from city traffic experience long-term negative effects on their health, growth and reproduction, the study found. "Sound has a much stronger and more direct impact on bird development than we knew before," said Dr Mylene Mariette, a bird communication expert at Deakin University in Australia and a co-author of the study, published in the journal Science. "It would be wise to work more to reduce noise pollution." A growing body of research has suggested that noise pollution causes stress to birds and makes communication harder for them. But whether birds are already distressed at a young age because they are affected by noise, or by how noise disrupts their environment and parental care, was still unclear. Mariette's team routinely exposed zebra finch eggs for five days to either silence, soothing playbacks of zebra finch songs, or recordings of city traffic noises such as revving motors and cars driving past. They did the same with newborn chicks for about four hours a night for up to 13 nights, without exposing the birds' parents to the sounds.

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Nicola Davis reports via The Guardian: If every day appears to go in a blur, try seeking out new and interesting experiences, researchers have suggested, after finding memorable images appear to dilate time. Researchers have previously found louder experiences seem to last longer, while focusing on the clock also makes time dilate, or drag. Now researchers have discovered the more memorable an image, the more likely a person is to think they have been looking at it for longer than they actually have. Such images were also easier for participants to recall the next day. Prof Martin Wiener, co-author of the study who is based at George Mason University in the U.S., said the findings could help develop improve artificial intelligence that interacts with humans, while they also offer opportunities to tweak our perceptions, given research has previously shown non-invasive brain stimulation can be used to lengthen a perceived interval. The results from two groups, totaling about 100 people, revealed participants were more likely to think they had been looking at small, highly cluttered scenes -- such a crammed pantry -- for a shorter duration than was the case, whereas the reverse occurred when people viewed large scenes with little clutter, such as the interior of an aircraft hangar. The team also carried out experiments involving 69 participants that found images known from previous work to be more memorable were more likely to be judged as having been shown for longer than was the case. Crucially, the effect seemed to go both ways. "We also found that the longer the perceived subjective duration of an image, the more likely you were to remember it the next day," said Wiener. When the team carried out an analysis using deep learning models of the visual system, they discovered more memorable images were processed faster. What's more, the processing speed for an image was correlated with how long participants thought they had been looking at it. "Images may be more memorable because they are processed faster and more efficiently in the visual system, and that drives the perception of time," said Wiener. The team suggest time dilation might serve a purpose, enabling us to gather information about the world around us. The findings have been published in the journal Nature Human Behavior.

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