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Phys.org · 实时热榜

HISTORY2026年8月4日103 不同热搜
07/2308/21 有历史数据
DAILY UNIQUE TOPICS103 个热搜
  1. 01
    Underground fungal networks come into 3D view without disturbing plant roots

    Symbioses between plants and fungi are essential for most plants. Fungal structures known as mycorrhizae extend the area from which plants can draw water and nutrients from the soil. In return, plants supply the fungi with carbohydrates produced through photosynthesis. Although the importance of this symbiosis has been known for decades, researchers have not previously been able to study the underground network in its natural structure.

    最高第 105:41 达到05:41 首次观测上榜23:33 观测离榜累计约17小时52分
  2. 02
    Pollen movement tracked from ground to sky with new modeling method

    Plant biologists and engineers have extended their studies to the skies to track airborne pollen once it leaves a crop. In a new study, published in Environmental Monitoring and Assessment, researchers established an accurate methodology for tracking, measuring and forecasting pollen dispersal of genetically engineered switchgrass at both ground and atmospheric levels.

    最高第 105:25 达到05:25 首次观测上榜23:01 观测离榜累计约17小时36分
  3. 03
    AI models atom movement to predict solid-state reaction pathways, including impurities, in minutes

    A research team at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has successfully demonstrated an AI modeling approach that accurately and rapidly predicts how reactions between solid materials unfold over time. It is the first predictive model that accounts for how atoms travel through materials during solid-state reactions. Importantly, its predictions provide practical insights into the best recipes for making advanced materials.

    最高第 106:13 达到06:13 首次观测上榜23:49 观测离榜累计约17小时36分
  4. 04
    Rubin Observatory opens a deep window on a famous cosmic field

    A new Vera C. Rubin Observatory image featuring hundreds of thousands of distant galaxies in and around the COSMOS field marks the observatory's first LSST Camera image and catalog release for science.

    最高第 205:41 达到05:41 首次观测上榜23:01 观测离榜累计约17小时20分
  5. 05
    Male sperm whales produce loudest communication sounds ever measured in any mammal

    Deep in the world's oceans, large male sperm whales emit slow, low-frequency clicks with the highest source levels of any animal communication sounds. These slow clicks are not the echolocation clicks the whales use to locate prey, but loud, low-frequency communication signals.

    最高第 305:25 达到05:25 首次观测上榜22:45 观测离榜累计约17小时20分
  6. 06
    New quantum encryption method prevents ciphertext from being cloned

    Digital security currently relies on difficult equations to protect data. For example, when you use a credit card online, the information is locked inside a math problem that would take a modern computer thousands of years to solve. However, if someone builds a powerful enough computer, that security breaks.

    最高第 205:25 达到05:25 首次观测上榜22:45 观测离榜累计约17小时20分
  7. 07
    Discarded rice husks capture toxic dyes, offering a reusable water filter

    Rice is the most-eaten food on the planet, and its discarded outer husk results in some 300 billion pounds of waste per year. FIU chemistry researcher Islam Ibrahim Hussein says the inedible castoffs could be the key to cleaner water.

    最高第 106:29 达到06:29 首次观测上榜23:49 观测离榜累计约17小时20分
  8. 08
    Smart bioink shields delicate neural cells during precision 3D printing

    3D bioprinting allows scientists to build custom tissue structures for medicine, but printing soft tissues like the human brain remains a major challenge. The strong pushing forces required to squeeze biological materials through tiny printer nozzles often crush and damage sensitive cells, leading to low survival rates and weak printed structures.

    最高第 206:13 达到06:13 首次观测上榜23:33 观测离榜累计约17小时20分
  9. 09
    Marine microbes point to ancient seawater source beneath Antarctica's Blood Falls

    Salty water flowing through Antarctica's Blood Falls contains a distinct community of marine-specific microorganisms, providing evidence that the brine system beneath the glacier has a marine origin, according to a paper published in Nature Geoscience. The findings offer new insights into how microbial communities can persist through major environmental transitions.

    最高第 105:09 达到05:09 首次观测上榜22:13 观测离榜累计约17小时4分
  10. 10
    Why we overestimate the positive impact of our actions on the climate

    Why is recycling waste or switching off the lights sometimes perceived as more effective for the climate than giving up air travel? A team from the University of Geneva (UNIGE) surveyed nearly 3,000 people and identified key psychological mechanisms underlying these misperceptions. Their findings pave the way for more effective communication strategies that encourage behaviors with the greatest potential to reduce greenhouse gas emissions. The study is published in Nature Sustainability.

    最高第 405:25 达到05:25 首次观测上榜22:29 观测离榜累计约17小时4分
  11. 11
    Bringing it all into focus—computational microscope captures 25.2 billion pixels per second across a wide field of view

    When designing microscopes, optical engineers have long faced a trade-off between speed, field of view and resolution. But improving one of these properties typically comes at the expense of another. Now, a UC Berkeley–led team of researchers has found a way to address this challenge, opening the door to new possibilities in the field of microscopy.

    最高第 106:45 达到06:45 首次观测上榜当日结束时仍在榜累计约17小时4分
  12. 12
    Forest floors reveal overlooked seed dispersers: Slugs, beetles and crabs spread viable seeds

    A review led by the School of Biological Sciences at The University of Hong Kong (HKU) has revealed that tiny ground-dwelling invertebrates are overlooked but important seed dispersers, challenging the traditional focus on birds and mammals and offering new insights into forest regeneration and biodiversity conservation.

    最高第 107:01 达到07:01 首次观测上榜当日结束时仍在榜累计约16小时48分
  13. 13
    Light controls nanoscale 'bubble' domains in a ferroelectric crystal

    Researchers at Flinders University have discovered an unexpected way light can control tiny electronic structures inside advanced materials, a development that could help pave the way for more energy-efficient memory devices, sensors and future computing technologies.

    最高第 104:53 达到04:53 首次观测上榜21:41 观测离榜累计约16小时48分
  14. 14
    How to keep the Earth habitable when the sun dies

    In a billion years, the sun will start to run out of fuel and expand to become a red giant. Earth's oceans and atmosphere will be burned away, and Earth will likely be engulfed by the sun altogether. The sun will then shrink to a dim white dwarf, and all light and warmth in the solar system will diminish. In a hundred trillion years, the galaxy's ability to produce stars will be exhausted, and everything will turn dark. However, there's a way for life to escape this fate—and what's more, we woul

    最高第 204:53 达到04:53 首次观测上榜21:25 观测离榜累计约16小时32分
  15. 15
    Pixel patterns harness diffraction for faster, more accurate nanoscale 3D printing

    Researchers at the George W. Woodruff School of Mechanical Engineering have developed a new approach to nanoscale 3D printing that improves both speed and fidelity, overcoming a challenge that has limited the technology's broader use in manufacturing.

    最高第 204:21 达到04:21 首次观测上榜20:53 观测离榜累计约16小时32分
  16. 16
    At risk and cut off—are other coastal communities destined to follow in Torcross's footsteps?

    It is six months since the main road into the village of Torcross, in South Devon, collapsed after a series of storms caused extensive damage to the community's sea defenses. Residents are still coming to terms with the devastation and isolation caused by the storms and awaiting the results of a £20 million investment that will see huge quantities of rock placed on the beach at Slapton Sands to bolster those defenses.

    最高第 104:21 达到04:21 首次观测上榜20:53 观测离榜累计约16小时32分
  17. 17
    Digital tools alone cannot secure food supplies, study suggests

    Digital technologies could strengthen food security in developing countries, but their impact will be limited unless governments address distrust, weak collaboration and institutional inefficiencies, according to a study focusing on Mauritius published in the International Journal of Agriculture Innovation, Technology and Globalisation.

    最高第 205:09 达到05:09 首次观测上榜21:41 观测离榜累计约16小时32分
  18. 18
    Zodiacal dust in exoplanetary systems could hinder our search for life on other worlds

    If you've ever been under a dark sky in the early morning before dawn, you may have seen a faint glow, almost like a column of light rising from the east. It's sometimes known as the false dawn because it appears before true dawn. It can also appear in the west after sunset, though it typically isn't as noticeable. The glow is caused by dust in the inner solar system. It is a diffuse plane of tiny particles that aligns with the plane of the inner planets. Since the planets move through the zodia

    最高第 304:53 达到04:53 首次观测上榜21:09 观测离榜累计约16小时16分
  19. 19
    Four labs find experimental differences can undermine AI catalyst predictions

    To turn abundant carbon dioxide into valuable fuel, we need a fast and efficient way to determine which catalysts work best over the longest time. AI models have the potential to help guide catalyst selection, but as with internet chatbots, AI models are only as good as the data you put into them.

    最高第 107:33 达到07:33 首次观测上榜当日结束时仍在榜累计约16小时16分
  20. 20
    Homo antecessor skull layers resemble modern humans and Neanderthals, fragments suggest

    A new study provides quantitative data on cranial vault thickness in Homo antecessor, based on the analysis of three parietal fragments recovered from the Gran Dolina site in the Sierra de Atapuerca, Burgos, Spain.

    最高第 204:05 达到04:05 首次观测上榜20:05 观测离榜累计约16小时
  21. 21
    World Meteorological Organization says prepare for a strong El Niño

    El Niño continues to intensify steadily and is expected to dominate global climate patterns in the August to October 2026 season, increasing the likelihood of above-normal temperatures across much of the world and driving significant shifts in rainfall patterns, according to the World Meteorological Organization.

    最高第 104:05 达到04:05 首次观测上榜20:05 观测离榜累计约16小时
  22. 22
    Mechanical shortcut' rapidly carries organic particles into the deep ocean

    The processes that capture carbon from the atmosphere and store it on the seabed are crucial for climate balance. However, assessing these mechanisms is often complicated because it requires measurements ranging from the surface to the deep ocean.

    最高第 107:49 达到07:49 首次观测上榜当日结束时仍在榜累计约16小时
  23. 23
    Stomach stone hypothesis sheds light on the evolution of dinosaur digestive systems

    An international research team led by Assistant Professor Ryuji Takasaki of the Faculty of Biosphere-Geosphere Science at Okayama University of Science has published a paper proposing a new hypothesis on the evolutionary history of dinosaur digestive systems by focusing on gastroliths—stones found within dinosaur abdominal cavities. By examining the degree of wear on these gastroliths, the team sheds light on dinosaur digestion strategies. The findings are published in the journal Paleobiology.

    最高第 103:49 达到03:49 首次观测上榜19:49 观测离榜累计约16小时
  24. 24
    Researchers develop a new catalyst to convert CO₂ into ethanol using electricity

    A research team led by Professor Hyoyoung Lee of the Department of Chemistry at Sungkyunkwan University has developed a new catalyst that converts carbon dioxide into ethanol with high selectivity. The study, titled "Atomic-scale Cu–Zn synergy directs asymmetric C–C coupling for ethanol-selective CO2 electroreduction," was published in Applied Catalysis B: Environment and Energy.

    最高第 304:21 达到04:21 首次观测上榜20:21 观测离榜累计约16小时
  25. 25
    Mechanical recycling contamination risks the circular plastics economy, but quality control analytics can help

    A study from the University of Manchester into the effects of polymer cross-contamination on the outcome of mechanically recycling plastics has found that the presence of contaminants radically alters degradation mechanisms.

    最高第 203:49 达到03:49 首次观测上榜19:33 观测离榜累计约15小时44分
  26. 26
    Ant teams beat gravity-based puzzle solvers

    Ants live in highly organized colonies and cooperate daily to tackle a wide range of problems. Their striking group behaviors have fascinated biologists for centuries and even inspired the development of various artificial intelligence (AI) systems.

    最高第 103:33 达到03:33 首次观测上榜19:01 观测离榜累计约15小时28分
  27. 27
    Astrobiologist uses Apollo lunar samples as mirror onto early Earth

    Roll back the tape of Earth's history, and geologists and astrobiologists remain perplexed about the environmental conditions on early Earth. That's because conventional pathways for understanding Earth's history have been lost to time owing to the planet's active geology and atmospheric weathering.

    最高第 103:01 达到03:01 首次观测上榜15:01 观测离榜累计约12小时
  28. 28
    Simulations hint at a hidden population of companionless black holes

    So far, almost all stellar-mass black holes detected by astronomers have been found in binary systems. However, astronomers have long suspected that these binary black holes are the exception and that, within the Milky Way, most exist on their own.

    最高第 203:33 达到03:33 首次观测上榜15:33 观测离榜累计约12小时
  29. 29
    Nanopore method improves detection of cyanobacteria toxins in lake water

    Cyanobacterial blooms, like the ones that occur in Lake Geneva, are rapid, dense growths of photosynthetic bacteria in fresh and marine waters that can threaten the health of swimmers and their pets.

    最高第 203:01 达到03:01 首次观测上榜14:45 观测离榜累计约11小时44分
  30. 30
    Research challenges assumptions about online education success

    Admissions applications, discussion posts, grades, and activity logs are among the most common signals educators use to gauge whether students will thrive in an online program. But two new Georgia Tech studies suggest those measures tell only part of the story.

    最高第 303:33 达到03:33 首次观测上榜15:01 观测离榜累计约11小时28分
  31. 31
    Tiger shark caught off Massachusetts could be sign of warming waters

    Nate Rouette and his brother Nelson went shark fishing on Cape Cod hoping for an exciting catch, but were shocked by what they reeled in—a tropical species of shark with a reputation for eating everything it can swallow.

    最高第 114:45 达到14:45 首次观测上榜当日结束时仍在榜累计约9小时4分
  32. 32
    Suspected heatstroke kills three lions at Japan zoo

    Three lions from a Tokyo zoo have died from suspected heatstroke, and others are under treatment, a spokeswoman said Tuesday, with the big cats struggling with high humidity.

    最高第 215:01 达到15:01 首次观测上榜当日结束时仍在榜累计约8小时48分
  33. 33
    Last Scottish island bird hunt banned after almost 500 years

    A centuries-old annual bird chick hunt on a remote Scottish island, known as the Guga Hunt, has been banned this year, authorities said Monday, citing conservation concerns.

    最高第 115:01 达到15:01 首次观测上榜当日结束时仍在榜累计约8小时48分
  34. 34
    US Northwest battles wildfires after Spokane neighborhoods scorched

    Wildfires supercharged by drought and intense heat tore through the northwestern U.S. city of Spokane, forcing the evacuation of 65,000 people and reducing hundreds of buildings to cinders as firefighters raced Monday to contain the flames.

    最高第 115:33 达到15:33 首次观测上榜当日结束时仍在榜累计约8小时16分
  35. 35
    Hurricane storm surge follows predictable patterns, study finds

    When a hurricane roars toward land, forecasters try to predict how high sea levels will rise to help coastal communities prepare for the worst impacts.

    最高第 102:45 达到02:45 首次观测上榜07:49 观测离榜累计约5小时4分
  36. 36
    Genetic analysis identifies a distinct Risso's dolphin population around British Isles

    Risso's dolphins around the British Isles are part of a single population—genetically distinct from those elsewhere in the Atlantic, new research shows. Scientists studied the DNA of dolphins that stranded in England, Scotland and Wales from 1992 to 2016.

    最高第 100:00 达到当日首次采集时已在榜04:53 观测离榜累计约4小时54分
  37. 37
    Kids who start social media earlier may do worse at school

    Students who open a personal social media account earlier in adolescence appear to perform worse on later standardized tests, according to a study in Nature Human Behaviour based on 5,227 Italian students. The authors speculate that these differences may be attributable to excessive social media engagement and disruptions to students' attention.

    最高第 202:45 达到02:45 首次观测上榜07:33 观测离榜累计约4小时48分
  38. 38
    Aquarium sends shark eggs to bolster wild populations

    Shedd Aquarium has sent four zebra shark eggs to contribute to a conservation effort for the endangered species, marking the Chicago nonprofit's first delivery to Raja Ampat, Indonesia. As a founding partner of ReShark, Shedd Aquarium has long contributed expertise to the StAR Project (Stegostoma tigrinum Augmentation and Recovery)—ReShark's pioneering zebra shark, or Indo-Pacific Leopard Shark, recovery initiative.

    最高第 119:01 达到19:01 首次观测上榜当日结束时仍在榜累计约4小时48分
  39. 39
    Geological evidence questions the role of Agulhas Leakage in Atlantic Ocean circulation

    For decades, scientists have asserted that the leakage of warm, salty Indian Ocean water south of South Africa into the Atlantic is a major contributor to the Atlantic Meridional Overturning Circulation (AMOC), a component of the global ocean conveyor system.

    最高第 100:05 达到00:05 首次观测上榜04:53 观测离榜累计约4小时48分
  40. 40
    #Nature isn't one-size-fits-all, study finds

    People often talk about "getting out into nature" as if all green spaces offer the same experience.

    最高第 100:21 达到00:21 首次观测上榜05:09 观测离榜累计约4小时48分
  41. 41
    Metal deposits reveal how ice ages reshaped oxygen levels across Earth's oceans

    Earth's oceans repeatedly lost oxygen and produced metal deposits during the planet's deepest ice ages. An international team of researchers analyzed manganese and other chemical signatures preserved in more than 27,000 ancient seafloor samples collected from six continents.

    最高第 100:53 达到00:53 首次观测上榜05:25 观测离榜累计约4小时32分
  42. 42
    Ten viral genome regions may explain why deadly chicken virus evades vaccines

    A highly contagious herpes virus causes Marek's disease, a deadly illness that mainly infects chickens. While it does not make people sick, the virus causes tumors and paralysis in chickens and, if unchecked, can spread rapidly through entire flocks.

    最高第 101:41 达到01:41 首次观测上榜06:13 观测离榜累计约4小时32分
  43. 43
    Spaceflight could change how astronauts swallow, eat and drink in subtle ways

    Imagine trying to swallow a sip of water while your face feels stuffed with congestion, your sense of taste is dulled and your body is floating 250 miles (400 kilometers) above Earth.

    最高第 102:29 达到02:29 首次观测上榜07:01 观测离榜累计约4小时32分
  44. 44
    New museum find shows nature can't stop inventing seahorses

    At first glance, it looks exactly like a seahorse. It has the same horse-shaped head tilted down from the body, the same curled, grasping tail and, in the males, a fully enclosed pouch for brooding the young.

    最高第 200:21 达到00:21 首次观测上榜04:53 观测离榜累计约4小时32分
  45. 45
    Some tropical butterflies live surprisingly long lives. Is it their high‑protein diet?

    Butterflies are charismatic, colorful and cherished around the world. One of the most diverse groups of insects, with more than 19,000 described species, they inspire international organizations such as the North American Butterfly Association and the Xerces Society, as well as countless websites devoted to their identification, monitoring and natural history.

    最高第 400:00 达到当日首次采集时已在榜04:21 观测离榜累计约4小时22分
  46. 46
    Wildfires: Why disposable BBQs are being banned from some parks and beaches

    There's something almost comic about the modern British summer ritual: As soon as the mercury climbs, we head to the nearest park, sit cross-legged on scorched grass and hunch over a flimsy foil tray to sear sausages over an open flame.

    最高第 200:00 达到当日首次采集时已在榜04:21 观测离榜累计约4小时22分
  47. 47
    Seven new diamond frog species reveal Madagascar's hidden amphibian diversity

    An international team of scientists has described seven new species of Madagascar's elusive diamond frogs (Rhombophryne), revealing that one of the island's most mysterious groups of amphibians is even more diverse than previously thought. The research is published in the journal Vertebrate Zoology.

    最高第 300:00 达到当日首次采集时已在榜04:21 观测离榜累计约4小时22分
  48. 48
    You can love an AI but can it love you back? Philosophy has the answer

    We often speak of loving things like a cozy sweater or new camera. But this talk is not generally taken literally. It's a kind of emotional shorthand. We use it to express our fondness for precious objects.

    最高第 101:09 达到01:09 首次观测上榜05:25 观测离榜累计约4小时16分
  49. 49
    Cells of the same age can follow sharply different biological aging paths

    New research reveals that cells of the same chronological age can follow dramatically different biological aging paths, offering new insights into cancer, neurodegeneration and the fundamental biology of aging. Rather than aging uniformly, tissues become a mosaic of biologically younger and older cells, with some individual cells aging much faster than others—a discovery that could reshape how scientists understand aging and the earliest origins of age-related disease.

    最高第 201:09 达到01:09 首次观测上榜05:25 观测离榜累计约4小时16分
  50. 50
    Higher river discharge helps young salmon

    Low river discharge reduces the likelihood of young Atlantic salmon reaching the North Sea. Fewer salmon reach the Haringvliet sluices, and their passage takes longer, making them more likely to fall prey to predators. Using so-called predation tags, researchers were able to demonstrate for the first time that this predation occurs largely before the Haringvliet sluices and is probably mainly caused by predatory fish. The results provide leads for improving the management of the Haringvliet slui

    最高第 200:53 达到00:53 首次观测上榜05:09 观测离榜累计约4小时16分