全部/知识/实时热榜

Phys.org · 实时热榜

HISTORY2026年7月23日108 不同热搜
07/2308/21 有历史数据
DAILY UNIQUE TOPICS108 个热搜
  1. 01
    No perfect job? Moving forward despite uncertainty may make work more meaningful

    People who accept that there may not always be a perfect career choice and learn to make decisions despite uncertainty are more likely to find their work meaningful, satisfying and engaging, according to research published in the Journal of Counseling Psychology.

    最高第 121:16 达到21:16 首次观测上榜当日结束时仍在榜累计约2小时30分
  2. 02
    Orcas filmed ramming one of the world's heaviest fish so hard it explodes, possibly for fun

    Orcas are known to be smart and ruthless hunters. They've been observed hunting a variety of prey, with some species, such as whales, larger than themselves. They use a wide range of strategies to hunt and kill prey, but now, in the Gulf of California, researchers have observed one that hasn't been described before.

    最高第 112:16 达到12:16 首次观测上榜当日结束时仍在榜累计约11小时30分
  3. 03
    Engineered enzyme erases a stubborn mark of aging by up to 70% in human tissue samples

    A biotech company called Revel Pharmaceuticals is looking into ways to reverse aging, and the company's science team, along with researchers from the company Calico and the University of Colorado, may be a step closer to realizing the so-called fountain of youth. The team recently published their study in Nature Communications detailing how they engineered an enzyme capable of reversing a particular form of age-related damage and demonstrated its competence with test results.

    最高第 100:46 达到00:46 首次观测上榜05:16 观测离榜累计约4小时30分
  4. 04
    Ordinary moss generates surprisingly complex electrical activity

    Moss may well be something that most of us barely give a second thought, but there is far more to this small nonvascular plant than meets the eye. A new study published in the journal Royal Society Open Science reports that it displays a surprising amount of electrical activity.

    最高第 100:00 达到当日首次采集时已在榜04:16 观测离榜累计约4小时16分
  5. 05
    Molecular clock transitions tune out the noise in the hunt for new physics

    Heavy polar molecules are some of the most sensitive tools physicists have for probing what lies beyond the Standard Model, the theory that describes the particles and forces we know about. But turning that sensitivity into precise, trustworthy measurements has long been held back by one stubborn problem: Stray electric and magnetic fields drown out the tiny signals researchers are actually looking for.

    最高第 122:16 达到22:16 首次观测上榜当日结束时仍在榜累计约1小时30分
  6. 06
    Microscale roughness breakthrough defies 80 years of fluid dynamics

    Logically, you would think a sleek surface has optimal aerodynamics—but recent research at Tohoku University turns this fundamental principle on its head. Applying an irregular microscale surface texture reduced the aerodynamic drag of a test model. The innovation has potential applications in the design of fuel-efficient vehicles. The study is published in the Journal of Fluid Mechanics.

    最高第 100:16 达到00:16 首次观测上榜04:46 观测离榜累计约4小时30分
  7. 07
    Carbon footprint of metal production could be more than 10 times higher than estimated

    New research from the University of St Andrews has found that metal production carbon footprints could be more than 10 times higher than previously estimated, with serious implications for the ambition to reach net zero.

    最高第 101:46 达到01:46 首次观测上榜07:46 观测离榜累计约6小时
  8. 08
    Antibiotic-tolerant bacteria rely on a hidden RNA-based survival strategy

    Antibiotics are a medical marvel, but many microbes are gaining the ability to resist and tolerate these therapeutics. St. Jude Children's Research Hospital scientists have uncovered how S. pneumoniae adapts to antibiotic exposure and immune pressures. Their findings reveal that changes in RNA regulation enable bacteria to enter a state of antibiotic tolerance. The results provide a deeper understanding of how pathogens survive treatment and could inform strategies to improve the effectiveness o

    最高第 102:16 达到02:16 首次观测上榜10:16 观测离榜累计约8小时
  9. 09
    Chemists develop a molecular platform for the selective control of oxygen reaction pathways

    Controlling how oxygen reacts is important for improving technologies such as batteries, fuel cells and environmentally sustainable chemical processes. A research team led by professor Seung Jun Hwang from KAIST's Department of Chemistry has developed a molecular system capable of directing oxygen activation along a selected electron-transfer pathway.

    最高第 102:46 达到02:46 首次观测上榜16:46 观测离榜累计约14小时
  10. 10
    Millennial minimalism: Living in a less material world

    Consumer behavior accounts for almost two-thirds of global greenhouse gas emissions. Research published in the International Journal of Business Excellence argues that reducing absolute consumption, rather than simply making it greener, needs to be a priority in environmental policy.

    最高第 110:16 达到10:16 首次观测上榜23:46 观测离榜累计约13小时30分
  11. 11
    Why river management is so crucial to protecting one of world's most important wetlands

    A major new study led by Swansea University has shown that upstream river management, rather than local rainfall, is the primary driver of one of the world's most important wetlands. According to the research published in Scientific Reports, which analyzed more than two decades of satellite observations, the future of Iraq's Mesopotamian Marshes depends far more on the water flowing from the Tigris and Euphrates rivers than on rainfall.

    最高第 104:16 达到04:16 首次观测上榜20:16 观测离榜累计约16小时
  12. 12
    Extreme heat wave grips Tunisia as wide power cuts fuel frustration

    In Tunisia, long power outages across the country have added to the strain of an intense heat wave, with temperatures as high as 49°C (120°F), leaving many fearing for their livelihoods.

    最高第 108:46 达到08:46 首次观测上榜23:46 观测离榜累计约15小时
  13. 13
    EU watchdog reduces safe level of exposure to 'forever chemical' TFA

    The EU's food safety agency said Wednesday it has dramatically reduced the acceptable daily intake level of the so-called forever chemical TFA, following new evidence of its effect on a key hormone that regulates the body's metabolism.

    最高第 101:16 达到01:16 首次观测上榜06:16 观测离榜累计约5小时
  14. 14
    Study of incarcerated women in Chile finds different outcomes after release

    A new study of incarcerated women in Chile reveals that women respond to imprisonment in very different ways: While most experienced little change in their involvement in crime after release, those with higher levels of past criminal involvement transitioned toward less offending. Access to employment or training played a role in their lower levels of offending following release.

    最高第 111:46 达到11:46 首次观测上榜23:46 观测离榜累计约12小时
  15. 15
    Physics-based AI could boost biomedical imaging and autonomous vehicle sensors

    A research team led by UCLA and the University of Rochester has demonstrated a promising evolution of an imaging system designed to capture details within "complex media," which scatter light, from depicting structures inside body tissue to seeing obstacles through heavy fog. The system uses physics-based machine learning to improve an existing imaging technique.

    最高第 103:16 达到03:16 首次观测上榜17:16 观测离榜累计约14小时
  16. 16
    CRISPR-Cas coordinates a layered bacterial defense network in innate immunity

    All cellular life—from humans to bacteria—possesses two layers of immunity: innate and adaptive. Scientists have long understood how these two types of immunity work together in higher organisms but not in the microbial world.

    最高第 103:46 达到03:46 首次观测上榜19:46 观测离榜累计约16小时
  17. 17
    Neural networks unlock larger quantum simulations with lower computational costs

    In recent years, research using artificial intelligence to predict material properties has advanced rapidly. Neural network quantum Monte Carlo methods have attracted attention as highly accurate simulation techniques. However, their extremely high computational cost has limited their application to small molecular systems. This study introduces a new computational method that overcomes this limitation.

    最高第 104:46 达到04:46 首次观测上榜21:46 观测离榜累计约17小时
  18. 18
    Even a slight overproduction of tubulin can tip the balance of cellular health, study shows

    For cells to function properly, they must produce the right amount of each protein. It is a delicate balance: Both too little and too much can compromise essential cellular functions. A team from the University of Geneva (UNIGE) has now shown that even a modest excess of tubulin—the protein that assembles into microtubules, the cell's internal scaffolding—is enough to disrupt tissue architecture and reduce cell viability. Published in Nature Communications, the study demonstrates that the quanti

    最高第 105:46 达到05:46 首次观测上榜22:46 观测离榜累计约17小时
  19. 19
    Water-surface vortices drive tiny rotors without electricity, magnets or chemicals

    Reliably generating controlled miniature rotations has long been a challenge: Chemical propulsion systems wear out, and methods that use electric or magnetic fields require complex setups. A team from KIT's Institute of Microstructure Technology (IMT) and the Suzhou Institute of Nano-tech and Nano-bionics (SINANO) at the Chinese Academy of Sciences has now demonstrated that flow at a water surface alone is sufficient to rotate a floating object in a fixed direction. Their research is published i

    最高第 106:16 达到06:16 首次观测上榜22:46 观测离榜累计约16小时30分
  20. 20
    Shifting weather patterns drive 55% of Europe's summer drought trend, study finds

    In a new study, researchers at Leipzig University have identified a major cause of the unusually severe summer soil drying and rising temperatures across Europe. They found that much of the trend can be attributed to changes in atmospheric circulation patterns—that is, shifts in the weather regimes that typically occur over Europe. These changes account for around 55% of the observed summer drought trend. Specifically, more frequent and persistent high-pressure systems have brought drier conditi

    最高第 105:16 达到05:16 首次观测上榜22:16 观测离榜累计约17小时
  21. 21
    Quantum internet leaves the lab with first real-world entanglement over busy telecom fiber

    Quantum information is notoriously fragile. Internet traffic is anything but. Yet Northwestern University scientists have demonstrated they can peacefully coexist inside the same fiber-optic cable.

    最高第 106:46 达到06:46 首次观测上榜22:46 观测离榜累计约16小时
  22. 22
    Marine animals first colonized empty seashells about 470 million years ago

    An international study led by researchers from the University of Tartu shows that approximately 470 million years ago, a significant ecological change took place in the world's oceans: For the first time, the interiors of empty mollusk shells began to be used as habitats. This marked the emergence of a new ecological niche and was a crucial step in the development of a marine ecosystem similar to today's.

    最高第 107:16 达到07:16 首次观测上榜23:16 观测离榜累计约16小时
  23. 23
    Genome tool places large genetic sequences precisely in rice and tobacco without DNA breaks

    Researchers at King Abdullah University of Science and Technology (KAUST) have developed a new way to add large pieces of genetic information to plants, overcoming a challenge that has limited plant biotechnology for decades. The advance could help scientists build more complex traits into plants in the future, supporting research into areas such as crop resilience, sustainable agriculture, biotechnology and the use of plants as scalable platforms for producing therapeutics and biologics.

    最高第 107:46 达到07:46 首次观测上榜23:46 观测离榜累计约16小时
  24. 24
    Portugal's ancient giant bears shrank over thousands of years and humans may be to blame

    About 22,000 years ago, a giant brown bear lumbered across what is now Portugal. The creature weighed around 385 kg (about 850 pounds), making it one of the largest of its kind ever found, dwarfing even the largest brown bears today.

    最高第 118:46 达到18:46 首次观测上榜当日结束时仍在榜累计约5小时
  25. 25
    June heat wave cost UK economy more than £1bn: Study

    Britain's record-breaking June heat wave resulted in some 24 million lost hours of work, costing the economy £1.15 billion ($1.5 billion), according to an estimate released Thursday by the London School of Economics (LSE).

    最高第 116:46 达到16:46 首次观测上榜当日结束时仍在榜累计约7小时
  26. 26
    Climate change making Europe drought 'more severe': study

    Human-caused climate change has intensified a drought across Europe, with extreme heat rather than low rainfall driving the exceptionally dry conditions, a team of international scientists said Thursday.

    最高第 117:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  27. 27
    Study spotlights human toll of abrupt U.S. foreign aid cuts

    In January 2025, the Trump administration announced a 90-day freeze on all United States government (USG) foreign aid, which subsequently became a permanent shutdown of USAID in July 2025. New research finds that the abrupt cessation of foreign aid disrupted health and humanitarian systems worldwide, with disproportionate impacts on women, girls and other marginalized populations.

    最高第 119:16 达到19:16 首次观测上榜当日结束时仍在榜累计约4小时30分
  28. 28
    Student research shows positive outcomes from summer research program

    Physician-scientists hold a unique role in the medical field. They balance patient care with conducting research. Physician-scientists spend much of their time in laboratories performing experiments to drive innovation across a wide range of medical treatments. But their numbers are declining.

    最高第 120:16 达到20:16 首次观测上榜当日结束时仍在榜累计约3小时30分
  29. 29
    New teaching method could help Aboriginal languages survive and thrive

    Curtin University-led research has unveiled a new teaching approach that could help incorporate Aboriginal languages into Australian classrooms, teach younger generations and potentially prevent important cultural connections from being lost.

    最高第 120:46 达到20:46 首次观测上榜当日结束时仍在榜累计约3小时
  30. 30
    Conditions remain 'unchanged' for young people with disability, data reveal

    The level of inequity experienced by young people with disability has remained largely unchanged since the turn of the century, according to new research led by Flinders University. Using data from the Household, Income and Labor Dynamics in Australia Survey (HILDA), researchers examined the extent of social inequity experienced by young people ages 15–29 with disability, compared with those without disability, between 2001 and 2023.

    最高第 119:46 达到19:46 首次观测上榜当日结束时仍在榜累计约4小时
  31. 31
    Fig-leaf enzyme turns tannery waste into high-value collagen

    Tanneries generate large quantities of skin trimmings before hides are tanned. These trimmings contain collagen but are commonly treated as low-value waste. An international research team has developed a method that uses ficin, a protein-digesting enzyme obtained from fig leaves, to recover type I collagen from lambskin trimming waste.

    最高第 121:46 达到21:46 首次观测上榜当日结束时仍在榜累计约2小时
  32. 32
    From one frontier to another: The quantum revolution

    Manchester's quantum researchers are building on the Ferranti Mark I legacy, using ultra-pure silicon and single atoms to move quantum computing closer to real-world impact.

    最高第 122:46 达到22:46 首次观测上榜当日结束时仍在榜累计约1小时
  33. 33
    Would you trust AI for ethical advice?

    Most people would not prefer to take ethical advice from a computer, but a new Wharton study shows how attitudes change when users see how good AI guidance can be.

    最高第 123:16 达到23:16 首次观测上榜当日结束时仍在榜累计约30分钟
  34. 34
    Drought, water shortages and crop failures: How does the medieval warm period compare with today?

    A heat wave lasting four months, followed by water shortages and crop failures. This is England in the 13th century, not the 21st. What is often called the Medieval Warm Period saw elevated temperatures in many parts of the world between the 10th and 13th centuries.

    最高第 123:46 达到23:46 首次观测上榜当日结束时仍在榜累计约0分钟
  35. 35
    JWST captures rare glimpse of early black hole growing inside network of young galaxies

    Astronomers using the James Webb Space Telescope have captured one of the clearest views yet of how an early supermassive black hole may grow within a network of young galaxies. The compact active galaxy, seen just a billion years after the Big Bang, lies beside a 12,000-parsec-long filament containing multiple galaxies that are expected to merge within a few hundred million years.

    最高第 219:46 达到19:46 首次观测上榜当日结束时仍在榜累计约4小时
  36. 36
    Striped or checkered? Magnetic field influences competing electronic patterns in a graphene-like quantum material

    In most everyday materials, such as copper, silver and silicon, the behavior of electrons is relatively predictable. In quantum materials, however, electrons can interact in complex ways, giving rise to collective electronic states with remarkable properties. Understanding how these states emerge—and, ultimately, how to control them—is one of the central challenges in quantum materials research.

    最高第 217:16 达到17:16 首次观测上榜当日结束时仍在榜累计约6小时30分
  37. 37
    Combined nanoparticle and internal laser method could make cancer therapy less invasive

    In a promising development for cancer treatment, a collaborative research team has overcome two issues that have prevented photothermal therapy, a much less invasive treatment option than surgery and/or radiation, from becoming more common.

    最高第 200:00 达到当日首次采集时已在榜03:46 观测离榜累计约3小时46分
  38. 38
    There are gaps in food access in Georgia, but not where you'd expect

    In 2023, more than 50 million people across the United States turned to food pantries and other charitable organizations for meals. But many may be unable to access the food they need, particularly if they live in a more well-off area, according to a new study from the University of Georgia published in The Professional Geographer.

    最高第 200:16 达到00:16 首次观测上榜04:16 观测离榜累计约4小时
  39. 39
    Researchers develop new AI system for highly accurate mapping and modeling of orchards

    In precision agriculture, where data is used to automate and optimize agricultural tasks for maximum yield, large-scale mapping and digital modeling of the land of interest are essential. This digital backbone enables tasks such as yield estimation, targeted spraying and phenotyping while also providing the foundation for autonomous navigation, perception and robotic operation. However, in modern commercial orchards, with their large scale, high tree density and structured layouts, achieving con

    最高第 200:46 达到00:46 首次观测上榜04:46 观测离榜累计约4小时
  40. 40
    Rescuing satellites is harder than it looks. A growing space junk problem will make doing so more important

    A commercial robotic spacecraft called LINK launched on an emergency mission to save NASA's Neil Gehrels Swift Observatory, which has been slowly falling toward Earth, on July 3, 2026. Over the coming weeks, LINK, built by Katalyst Space Technologies, will try to grasp the telescope, then spend months raising it to a safer orbit.

    最高第 201:46 达到01:46 首次观测上榜07:46 观测离榜累计约6小时
  41. 41
    New genetic approaches raise hopes for restoring the American chestnut to its former glory

    The American chestnut tree was a dominant and iconic species in many Appalachian forests until it was devastated by an introduced fungus from Asia called chestnut blight.

    最高第 202:16 达到02:16 首次观测上榜08:46 观测离榜累计约6小时30分
  42. 42
    Juno takes temperature of Jupiter's fiery moon Io

    NASA's Juno mission has provided the first measurements of the temperature below the surface of Jupiter's moon Io, revealing significant heating within the shallow subsurface of the most volcanically active world in the solar system. Collected during two close flybys, the data also show that most of Io's surface is remarkably smooth and composed of material with very low density.

    最高第 201:16 达到01:16 首次观测上榜05:46 观测离榜累计约4小时30分
  43. 43
    Q&A: Listening with light—an innovative new technology for studying the seafloor

    The seafloor plays an important ecological and societal role. Understanding the processes that shape this environment will help guide conservation policy and decision-making about underwater infrastructure and geohazards.

    最高第 203:46 达到03:46 首次观测上榜19:46 观测离榜累计约16小时
  44. 44
    France recorded 5,700 more deaths than usual during its historic June heat wave

    France recorded at least 5,700 more deaths than usual during a historic heat wave last month, the public health agency said Wednesday, sharply increasing its estimates of the feared toll from record-shattering temperatures.

    最高第 202:46 达到02:46 首次观测上榜16:46 观测离榜累计约14小时
  45. 45
    Molecular model for semiconductor surfaces developed

    Semiconductor surfaces can generally be studied only with considerable experimental effort, for example, in an ultrahigh vacuum. To more easily gain new insights into their properties and the possibilities for targeted modification, scientists at Heidelberg University have developed a molecular model for the so-called "buckled dimer" using synthetic and computational chemistry methods.

    最高第 203:16 达到03:16 首次观测上榜17:16 观测离榜累计约14小时
  46. 46
    Creating the largest-ever database on floating ocean plastic using smart cameras

    The first five years (2019–2024) of operations of The Ocean Cleanup's Automated Debris Imaging System (ADIS) have been reviewed, and the findings have been published in Environmental Research Communications. In addition to reviewing the technology's performance, the study covers the initial 14,500 km2 of global ocean surface scanned for plastic debris and the more than 20,000 large floating objects it helped identify.

    最高第 204:16 达到04:16 首次观测上榜19:46 观测离榜累计约15小时30分
  47. 47
    Plasma design rules show how to preserve attosecond flashes for observing electrons

    Researchers at Skoltech, together with a colleague from the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences, working within the joint SIOM–Skoltech laboratory, have determined how to select the thickness and density of a plasma target so that a pulse passing through it retains its attosecond duration and high intensity. The results will help improve the design of plasma-based sources of ultraviolet and X-ray radiation used to study ultrafast processes in matter

    最高第 205:16 达到05:16 首次观测上榜21:46 观测离榜累计约16小时30分
  48. 48
    Reusable magnetic invention removes microplastics plus some PFAS from water

    Microplastics are an increasing global concern, with growing evidence of their presence in water systems. RMIT University researchers have developed a water treatment material that rapidly removes micro- and nanoplastics and some PFAS (per- and polyfluoroalkyl substances), bringing the technology closer to real-world use. The invention builds on the team's 2022 breakthrough in microplastics removal, extending its performance to much smaller particles and more complex wastewater.

    最高第 205:46 达到05:46 首次观测上榜22:16 观测离榜累计约16小时30分
  49. 49
    Detecting the body's magnetic fields with a low-power Ramsey-based magnetometer

    Our bodies generate extremely weak magnetic fields as electric currents flow through the heart, brain and other tissues. These signals are used in magnetocardiography and magnetoencephalography to assess heart function and brain activity, respectively. These fields can be detected at room temperature using diamond sensors containing nitrogen-vacancy (NV) centers, in which a carbon atom is replaced by a nitrogen atom adjacent to an empty lattice site.

    最高第 204:46 达到04:46 首次观测上榜21:16 观测离榜累计约16小时30分
  50. 50
    Light-driven chemistry method could create antiviral compound libraries 10 to 100 times larger within weeks

    As the world faces new and often untreatable viral threats, Simon Fraser University researchers have found a way to cut years off the time it takes to discover antiviral drugs. The new research enables scientists to quickly create large libraries of nucleoside analogs (NAs), compounds that mimic the building blocks of DNA and RNA and are widely used to treat cancer and viral infections such as HIV and hepatitis.

    最高第 206:46 达到06:46 首次观测上榜22:46 观测离榜累计约16小时