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Latest Science News -- ScienceDaily

Published: Jun 18, 2021 6:00:01 PM
  • Jun 18, 2021 1:17:03 PM
    In a bid to find or refine laboratory research models for cancer that better compare with what happens in living people, scientists report they have developed a new computer-based technique showing that human cancer cells grown in culture dishes are the least genetically similar to their human sources.
  • Jun 18, 2021 1:16:45 PM
    In a new study using variant virus recovered from one of the original travelers, researchers in the US and Japan have found that vaccination with an mRNA vaccine induces antibody responses that would protect humans from infection with the gamma/P.1 variant.
  • Jun 18, 2021 1:16:37 PM
    Researchers have found SARS-CoV-2 in the testes of infected hamsters. The authors think this may represent what could occur in men with mild to moderate COVID-19 disease.
  • Jun 17, 2021 8:37:09 PM
    A new study finds that convalescent plasma from recovered COVID-19 patients can dramatically improve likelihood of survival among blood cancer patients hospitalized with the virus. The therapy involves transfusing plasma from people who have recovered from COVID-19 into patients who have leukemia, lymphoma or other blood cancers and are hospitalized with the viral infection.
  • Jun 17, 2021 8:37:03 PM
    By cleverly combining complementary sequencing techniques, researchers have deepened our understanding of the function of known RNA molecules and discovered thousands of new RNAs. A better understanding of our transcriptome is essential to better understand disease processes and uncover novel genes that may serve as therapeutic targets or biomarkers.
  • Jun 17, 2021 8:37:01 PM
    A new article introduces a rapid assessment framework that can be used as a guide to make conservation and nature-based solutions more robust to future climate.
  • Jun 17, 2021 8:36:58 PM
    The depths of the Black Sea store comparatively large amounts of organic carbon. A research team has now presented a new hypothesis as to why organic compounds accumulate in this semi-enclosed sea and other oxygen-depleted waters. Reactions with hydrogen sulfide play an important role in stabilizing carbon compounds, the researchers posit. This negative feedback in the climate system could counteract global warming over geological periods.
  • Jun 17, 2021 8:36:55 PM
    Babies born by Cesarean section don't have the same healthy bacteria as those born vaginally, but a new study finds that these natural bacteria can be restored.
  • Jun 17, 2021 8:36:52 PM
    A research team has developed bio-inks for biosensors that could help localize critical regions in tissues and organs during surgical operations.
  • Jun 17, 2021 8:35:45 PM
    New research shows that nearly 28% of all electric scooters reported injuries were head and neck injuries.
  • Jun 17, 2021 8:35:13 PM
    Nanodecoys made from human lung spheroid cells (LSCs) can bind to and neutralize SARS-CoV-2, promoting viral clearance and reducing lung injury in a macaque model of COVID-19. By mimicking the receptor that the virus binds to rather than targeting the virus itself, nanodecoy therapy could remain effective against emerging variants of the virus.
  • Jun 17, 2021 8:34:58 PM
    With sorghum poised to become an important crop grown by Pennsylvania farmers, researchers tested more than 150 germplasm lines of the plant for resistance to a fungus likely to hamper its production.
  • Jun 17, 2021 6:58:11 PM
    Physicists have used ultrashort laser pulses to probe the dynamics of photoelectron emission in tungsten crystals.
  • Jun 17, 2021 6:58:08 PM
    A long-term passive rewilding study has shown that natural woodland regeneration could make a significant contribution to meeting the UK's ambitious tree planting targets - potentially at no cost and within relatively short timescales. The research found natural growth due to seed dispersal by birds, mammals and wind can produce biodiverse and resilient woodland.
  • Jun 17, 2021 6:36:53 PM
    The yellow fever mosquito spreads multiple untreatable viruses in humans and is primarily controlled using a pesticide called permethrin. However, many mosquitoes are evolving resistance to the pesticide. A new study identifies mutations linked to different permethrin resistance strategies, which threaten our ability to control disease outbreaks.
  • Jun 17, 2021 6:36:50 PM
    When animals are hot, they eat less. This potentially fatal phenomenon has been largely overlooked in wild animals, explain researchers.
  • Jun 17, 2021 6:36:44 PM
    Once thought to be extinct, lobe-finned coelacanths are enormous fish that live deep in the ocean. Now, researchers have evidence that, in addition to their impressive size, coelacanths also can live for an impressively long time -- perhaps nearly a century.
  • Jun 17, 2021 6:36:39 PM
    Many diseases caused by a dysregulated immune system, such as allergies, asthma and autoimmunity, can be traced back to events in the first few months after birth. To date, the mechanisms behind the development of the immune system have not been fully understood. Now, researchers show a connection between breast milk, beneficial gut bacteria and the development of the immune system.
  • Jun 17, 2021 6:36:20 PM
    A new treatment approach focused on fixing cell damage, rather than fighting the virus directly, is effective against SARS-CoV-2 in lab models. If found safe for human use, this anti-viral treatment would make COVID-19 symptoms milder and speed up recovery times.
  • Jun 17, 2021 5:38:26 PM
    The glaciers of Nanga Parbat - one of the highest mountains in the world - have been shrinking slightly but continually since the 1930s. This loss in surface area is evidenced by a long-term study. The geographers combined historical photographs, surveys, and topographical maps with current data, which allowed them to show glacial changes for this massif in the north-western Himalaya as far back as the mid-1800s.
  • Jun 17, 2021 5:38:06 PM
    A faster method for collecting pure malaria parasites from infected mosquitos could accelerate the development of new, more potent malaria vaccines.
  • Jun 17, 2021 5:38:04 PM
    Nitrogen from agriculture, vehicle emissions and industry is endangering butterflies in Switzerland. The element is deposited in the soil via the air and has an impact on vegetation -- to the detriment of the butterflies, as researchers have discovered.
  • Jun 17, 2021 5:38:01 PM
    Researchers demonstrate highly chirped pulses created by a using a spectral filter in a Kerr resonator, enabling them to widen a laser pulse wavefront by separating the beam's colors. The chirped pulses remain stable even with more than 90% energy loss.
  • Jun 17, 2021 5:37:56 PM
    Chronic stress could be one reason why some animal orphans have shorter lives and less offspring. Researchers assessed if, as orphan humans, orphan chimpanzees are exposed to chronic stress. They found that maternal loss is stressful but orphans experience little chronic stress since stress hormones return to normal after two years, possibly thanks to care provided by other chimpanzees.
  • Jun 17, 2021 5:37:51 PM
    Peatlands are an important ecosystem that contribute to the regulation of the atmospheric carbon cycle. A multidisciplinary group of researchers investigated the climate response of a permafrost peatland located in Russia during the past 3,000 years. Unexpectedly, the group found that a cool climate period, which resulted in the formation of permafrost in northern peatlands, had a positive, or warming, effect on the climate.
  • Jun 17, 2021 3:55:45 PM
    Outside the breeding season many parrots live in dynamic social systems in which individuals travel and forage. These flocks are characterized by frequent changes in composition and their dynamic nature entails a unique set of challenges, such as potential increased aggression and competition for resources. Therefore, the ability to selectively choose the right flock members may be essential to maximize individual fitness.
  • Jun 17, 2021 3:55:43 PM
    A destructive pest beetle is edging closer to Australia as biological controls fail, destroying home gardens, plantations and biodiversity as they surge through nearby Pacific islands.
  • Jun 17, 2021 3:55:36 PM
    Using neural networks, researchers have developed a new method to search the human genome for beneficial mutations from Neanderthals and other archaic humans. These humans are known to have interbred with modern humans, but the overall fate of the genetic material inherited from them is still largely unknown. Among others, the researchers found previously unreported mutations involved in core pathways in metabolism, blood-related diseases and immunity.
  • Jun 17, 2021 3:55:33 PM
    The most accurate distance measurement yet of ultra-diffuse galaxy (UDG) NGC1052-DF2 (DF2) confirms beyond any shadow of a doubt that it is lacking in dark matter. The newly measured distance of 22.1 +/-1.2 megaparsecs are based on 40 orbits of NASA's Hubble Space Telescope, with imaging by the Advanced Camera for Surveys and a 'tip of the red giant branch' (TRGB) analysis.
  • Jun 17, 2021 3:55:23 PM
    Researchers develop technology to introduce genes into single cells in a targeted manner.
  • Jun 17, 2021 3:55:20 PM
    A new species of nematode (roundworm), named Cryptaphelenchus abietis, was isolated from bark beetles from a dead log collected in Nagano, Japan. The females of this newly described species can be identified based on the size of the post-uterine sac and the conical tail with an elongate posterior part. The males have seven genital papillae and a narrow bursal flap-like extension. The culturability of this species means it may be useful in further nematode research.
  • Jun 17, 2021 3:55:15 PM
    Bacteria from an Indian landfill could help eliminate contaminated chemicals. The focus is on pesticides such as lindane or brominated flame retardants, which accumulate in nature and in food chains. Researchers used these bacteria to generate enzymes that can break down these dangerous chemicals.
  • Jun 17, 2021 3:52:32 PM
    Scientists have developed a new method that improves dispensing of viscoelastic fluids - a vital process for circuit board production, 3D printing and other industrial applications. The scientists found that twisting these liquid bridges breaks them in a quicker and cleaner way than the conventional method of stretching them.
  • Jun 17, 2021 2:36:12 PM
    Researchers have created an intelligent nanopore system sensitive enough to detect single SARS-CoV-2 virus particles. By training a machine-learning algorithm, the platform was able to identify between various coronaviruses in just five minutes. This work may lead to fast and accurate point-of-care testing for COVID and other communicable diseases.
  • Jun 17, 2021 2:12:52 PM
    Researchers have developed a prototype device that could potentially diagnose pregnancy complications by monitoring the oxygen level of the placenta. The device sends near-infrared light through the pregnant person's abdomen to measure oxygen levels in the arterial and venous network in the placenta.
  • Jun 17, 2021 2:12:50 PM
    Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the young star Elias 2-27 have confirmed that gravitational instabilities play a key role in planet formation, and have for the first time directly measured the mass of protoplanetary disks using gas velocity data, potentially unlocking one of the mysteries of planet formation.
  • Jun 17, 2021 2:12:47 PM
    Researchers now have a better understanding of the mechanism underlying how certain bacteria can transfer genetic material across taxonomic kingdoms, including to fungi and protists. Their work could have applications in changing how bacteria perform certain functions or react to changes in their environment.
  • Jun 17, 2021 2:12:44 PM
    Since 2005, the guidelines for the care of unconscious cardiac arrest patients have been to cool the body temperature down to 33 degrees Celsius. A large, randomized clinical trial has now shown that this treatment does not improve survival.
  • Jun 17, 2021 2:12:41 PM
    Conservationists have long warned of the dangers associated with bears becoming habituated to life in urban areas. Yet, it appears the message hasn't gotten through to everyone. News reports continue to cover seemingly similar situations -- a foraging bear enters a neighbourhood, easily finds high-value food and refuses to leave. The story often ends with conservation officers being forced to euthanize the animal for public safety purposes.
  • Jun 17, 2021 2:12:38 PM
    Inhibiting necroptosis, a form of cell death, could yield a new treatment approach for chronic obstructive pulmonary disease (COPD), an inflammatory lung condition also known as emphysema, new research shows. The study revealed elevated levels of necroptosis in patients with COPD. By inhibiting necroptosis activity in the lung tissue of COPD patients the researchers found a significant reduction in chronic airway inflammation and lung damage.
  • Jun 17, 2021 2:12:35 PM
    Electrons are ubiquitous among atoms, subatomic tokens of energy that can independently change how a system behaves -- but they also can change each other. An international research collaboration found that collectively measuring electrons revealed unique and unanticipated findings.
  • Jun 17, 2021 2:12:27 PM
    A new study shows that medium-sized predators all but disappeared late in dinosaur history wherever Tyrannosaurus rex and its close relatives rose to dominance. In those areas -- lands that eventually became central Asia and Western North America -- juvenile tyrannosaurs stepped in to fill the missing ecological niche previously held by other carnivores.
  • Jun 17, 2021 2:12:24 PM
    Like the movie version of Spider-Man who shoots spider webs from holes in his wrists, a little alpine plant has been found to eject cobweb-like threads from tiny holes in specialized cells on its leaves. It's these tiny holes that have taken plant scientists by surprise because puncturing the surface of a plant cell would normally cause it to explode like a water balloon.
  • Jun 17, 2021 2:12:21 PM
    Sweat bees navigate through dark tropical forests guided by canopy patterns.
  • Jun 17, 2021 2:12:19 PM
    Using a numerical model that simulates ocean currents, researchers are shedding light on the important ''motion of the ocean'' in the Straits of Florida. They have conducted a first-of-its-kind study identifying the mechanisms behind the formation of sub-mesoscale eddies, which have important environmental implications and play a significant role in the health of the Florida Keys coral reef ecosystem.
  • Jun 17, 2021 12:27:44 PM
    Scientists have identified key molecular events in the developing human embryo between days 7 and 14 -- one of the most mysterious, yet critical, stages of our development.
  • Jun 17, 2021 12:27:38 PM
    People living with obesity who attended a non-judgemental and personalized lifestyle modification program improved their cardiovascular and mental health during just 10 weeks, according to a new study. Participants lost weight and achieved benefits in anxiety and depression and physical measurements including blood pressure.
  • Jun 17, 2021 12:27:35 PM
    Engineers have developed an integrated circuit that can carry out complicated artificial-intelligence operations like face, voice and gesture recognition and cardiac monitoring. Powered by either a tiny battery or a solar panel, it processes data at the edge and can be configured for use in just about any type of application.
  • Jun 17, 2021 12:27:32 PM
    A recent study revealed that microRNAs in urine could be a promising biomarker to diagnose brain tumors. Their findings have indicated that regular urine tests could help early detection and treatment of brain tumors, possibly leading to improved patient survival.
  • Jun 17, 2021 12:27:23 PM
    Researchers have developed a new technique that keeps quantum bits of light stable at room temperature instead of only working at -270 degrees. Their discovery saves power and money and is a breakthrough in quantum research.
  • Jun 17, 2021 12:27:18 PM
    A study found that stress, anxiety and depression during the first few weeks of the pandemic were associated with less and lower quality sleep. In a survey of more than 900 twins, about half of the respondents reported no change in sleep patterns, but 32.9 percent reported decreased sleep. Another 29.8 percent reported sleeping more. The researchers found that any change in sleep was connected to self-reported mental health issues, though more strongly associated with decreased sleep.
  • Jun 17, 2021 2:06:03 AM
    The new study found that both Europeans and Australians were highly concerned about the human health impact of marine plastic pollution, ranking it top of 16 marine-related threats in terms of cause for concern, including chemical or oil spills, marine biodiversity loss and climate change related effects such as sea-level rise and ocean acidification.
  • Jun 16, 2021 11:15:33 PM
    The role of people infected with malaria without showing symptoms presents a hidden risk to efforts to control the disease after they were found to be responsible for most infections in mosquitoes, according to a new study.
  • Jun 16, 2021 11:15:28 PM
    Chemical additives used in plastic production have been found in herring gull eggs, new research shows.
  • Jun 16, 2021 11:15:25 PM
    Killer whales have complex social structures including close 'friendships', according to a new study that used drones to film the animals.
  • Jun 16, 2021 11:15:16 PM
    Entomologists have discovered more than three dozen species of ambrosia beetles -- beetles that eat ambrosia fungus -- previously unknown to science.
  • Jun 16, 2021 11:15:11 PM
    An innovative underwater robot known as Mesobot is providing researchers with deeper insight into the vast mid-ocean region known as the 'twilight zone.' Capable of tracking and recording high-resolution images of slow-moving and fragile zooplankton, gelatinous animals, and particles, Mesobot greatly expands scientists' ability to observe creatures in their mesopelagic habitat with minimal disturbance.
  • Jun 16, 2021 11:15:07 PM
    Human-caused wildfire ignitions in Central Oregon are expected to remain steady over the next four decades and lightning-caused ignitions are expected to decline, but the average size of a blaze from either cause is expected to rise, modeling suggests.
  • Jun 16, 2021 11:15:00 PM
    Researchers have determined how certain short protein fragments, called peptides, can protect neuronal cells found in the light-sensing retina layer at the back of the eye. The peptides might someday be used to treat degenerative retinal diseases, such as age-related macular degeneration (AMD).
  • Jun 16, 2021 7:42:57 PM
    Why can some people weather the stress of social isolation better than others, and what implications does this have for their health? New research found that people who felt a strong sense of purpose in life were less lonely during the COVID-19 pandemic.