Five years ago, the National Institutes of Health abruptly pulled the plug on an ambitious study about the health effects of moderate drinking. The reason: The trial’s principal scientist and officials from the federal agency’s own alcohol division had solicited $60 million for the research from alcohol manufacturers, a conflict of interest and a violation […]
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The rate of suicides involving guns in the United States has reached the highest level since officials began tracking it more than 50 years ago, according to a new report from the Centers for Disease Control and Prevention. The rate increased by more than 10 percent in 2022 compared with 2019, and in some racial […]
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Penguins are champion power nappers. Over the course of a single day, they fall asleep thousands of times, each bout a few seconds long, a new study has found. Although animals have a wide range of sleeping styles, penguins easily take the record for fragmented sleeping. “It’s really unusual,” said Paul-Antoine Libourel, a neuroscientist at […]
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Ideally, such treatments can help transform the traumatic memory into one that more closely resembles ordinary sad memories. “It’s like having a block in the right place,” he said. “If I can access a memory, I know it’s a memory. I know it’s not happening to me now.” Dr. Ruth Lanius, the director of PTSD […]
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MIT geologists have found that a clay mineral on the seafloor, called smectite, has a surprisingly powerful ability to sequester carbon over millions of years. Under a microscope, a single grain of the clay resembles the folds of an accordion. These folds are known to be effective traps for organic carbon. Now, the MIT team […]
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It isn’t easy for a robot to find its way out of a maze. Picture the machines trying to traverse a kid’s playroom to reach the kitchen, with miscellaneous toys scattered across the floor and furniture blocking some potential paths. This messy labyrinth requires the robot to calculate the most optimal journey to its destination, […]
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For most metastatic cancer types, there are no reliably effective treatments. Therapies may slow the growth of tumors, but they will not eradicate them. Occasionally, however, treating a tumor in one location will cause untreated tumors elsewhere in the body to shrink or even regress completely — a dramatic but exceedingly rare phenomenon known as […]
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The practice of keeping time hinges on stable oscillations. In a grandfather clock, the length of a second is marked by a single swing of the pendulum. In a digital watch, the vibrations of a quartz crystal mark much smaller fractions of time. And in atomic clocks, the world’s state-of-the-art timekeepers, the oscillations of a […]
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Providing open access to scholarly publications is a long-running issue with new developments on the horizon. Last year, the U.S. federal government’s Office of Science and Technology Policy mandated that starting in 2026 publishers must provide open access to publications stemming from federal funding. That provides more impetus for the open-access movement in academia. Meanwhile, […]
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Astronomers have discovered six planets orbiting a bright star in perfect resonance. The star system, 100 light-years from Earth, was described on Wednesday in a paper published in the journal Nature. The discovery of the system could give astronomers a unique opportunity to trace the evolution of these worlds to when they first formed, and […]
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The Cajal Club has named Elly Nedivi, William R. and Linda R. Young Professor of Neuroscience in The Picower Institute for Learning and Memory, the 2023 recipient of the Krieg Cortical Kudos Discoverer Award. The club’s award, first bestowed in 1987, honors outstanding established investigators studying the cerebral cortex, the brain’s outer layers where circuits of neurons enable functions […]
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A Number That Sums It Up: Thousands of lives have been saved with CAR-T. CAR-T involves removing a type of white blood cell — T cells — from a patient’s blood, then genetically engineering to make proteins — chimeric antigen receptors (CAR) — which allow the T cells to attach to cancer cells and kill […]
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Living cells are bombarded with many kinds of incoming molecular signal that influence their behavior. Being able to measure those signals and how cells respond to them through downstream molecular signaling networks could help scientists learn much more about how cells work, including what happens as they age or become diseased. Right now, this kind […]
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MIT researchers and colleagues have demonstrated a way to precisely control the size, composition, and other properties of nanoparticles key to the reactions involved in a variety of clean energy and environmental technologies. They did so by leveraging ion irradiation, a technique in which beams of charged particles bombard a material. They went on to […]
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But gardening doesn’t just require a plot of land, a bit of water, a beam of sunlight. It also requires very animate ingredients: the insects, like black soldier flies, and microorganisms that keep these ecological systems in working order. A trip to Mars for a long-term stay, then, won’t just involve humans. It will also […]
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On average, more than one in three people in the United States will develop cancer at some point in their lifetime, according to the American Cancer Society. And many of those cases, they say, can potentially be prevented, including by making changes to your diet. Scientists have a good idea of what foods you should […]
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To teach an AI agent a new task, like how to open a kitchen cabinet, researchers often use reinforcement learning — a trial-and-error process where the agent is rewarded for taking actions that get it closer to the goal. In many instances, a human expert must carefully design a reward function, which is an incentive […]
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A blast shattered the stillness of a meadow in the Ozark Mountains on an autumn afternoon. Then another, and another, and another, until the whole meadow was in flames. Special Operations troops were training with rocket launchers again. Each operator held a launch tube on his shoulder, a few inches from his head, then took […]
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The motives for relocating vary, of course. Ms. Cave, 67, moved to Riderwood because “I was the daughter who had to take care of parents from afar, and I swore I’d never do that to my kids,” she said. At first, Ms. Cave recalled, “I looked around and saw the walkers and the scooters and […]
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Microbial sequence databases contain a wealth of information about enzymes and other molecules that could be adapted for biotechnology. But these databases have grown so large in recent years that they’ve become difficult to search efficiently for enzymes of interest. Now, scientists at the McGovern Institute for Brain Research at MIT, the Broad Institute of […]
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Ensuring that A.I. serves humanity was always a job too important to be left to corporations, no matter their internal structures. That’s the job of governments, at least in theory. And so the second major A.I. event of the last few weeks was less riveting, but perhaps more consequential: On Oct. 30, the Biden administration […]
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As Ridley Scott’s “Napoleon” opens for Thanksgiving holiday viewing, scenes from the film’s trailers are making waves. That was especially true of a sensational depiction of French troops led by Joaquin Phoenix as the French emperor firing cannons at the pyramids of Giza. “I don’t know if he did that,” Mr. Scott told The Times […]
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A treasure trove of metal is hiding at the bottom of the ocean. Potato-size nodules of iron and manganese litter the seafloor, and metal-rich crusts cover underwater mountains and chimneys along hydrothermal vents. Deep-sea mining companies have set their sights on these minerals, aiming to use them in batteries and electronics. Environmentalists warn that the […]
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For Professor Elsa Olivetti, tackling a problem as large and complex as climate change requires not only lab research but also understanding the systems of production that power the global economy. Her career path reflects a quest to investigate materials at scales ranging from the microscopic to the mass-manufactured. “I’ve always known what questions I […]
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A few years ago, Nicolas Fasel, a biologist at the University of Lausanne in Switzerland, and his colleagues developed a fascination with the penises of serotine bats, a species found in woodlands and the attics of old buildings across Europe and Asia. Serotine bats sport abnormally long penises with wide, heart-shaped heads. When erect, the […]
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Data is the new soil, and in this fertile new ground, MIT researchers are planting more than just pixels. By using synthetic images to train machine learning models, a team of scientists recently surpassed results obtained from traditional “real-image” training methods. At the core of the approach is a system called StableRep, which doesn’t just […]
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U.S. politics is heavily polarized. This is often regarded as a product of irrationality: People can be tribal, are influenced by their peers, and often get information from very different, sometimes inaccurate sources. Tribalism and misinformation are real enough. But what if people are often acting rationally as well, even in the process of arriving […]
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Over the last year, Sam Altman led OpenAI to the adult table of the technology industry. Thanks to its hugely popular ChatGPT chatbot, the San Francisco start-up was at the center of an artificial intelligence boom, and Mr. Altman, OpenAI’s chief executive, had become one of the most recognizable people in tech. But that success […]
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As the Israel-Hamas war flooded social media with violent content, false information and a seemingly limitless swell of opinions, lawmakers and users have accused platforms like TikTok and Facebook of promoting biased posts. Tech giants have denied the charges. TikTok, accused of elevating pro-Palestinian content, blamed “unsound analysis” of hashtag data. Some Instagram and Facebook […]
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How It Works: Doctors wait to cut the cord. The American College of Obstetricians and Gynecologists already recommends delaying clamping by 30 to 60 seconds for both full-term and preterm newborns. Preterm babies are those born before 37 weeks of gestation. In preterm infants, delayed clamping leads to improved circulation, less need for blood transfusions […]
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Diagnosing sleep disorders such as sleep apnea usually requires a patient to spend the night in a sleep lab, hooked up to a variety of sensors and monitors. Researchers from MIT, Celero Systems, and West Virginia University hope to make that process less intrusive, using an ingestible capsule they developed that can monitor vital signs […]
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