Latest Science News -- ScienceDaily

11/24/2021 03:41 PM
Only alcohol -- not caffeine, diet or lack of sleep -- might trigger heart rhythm condition
New research that tested possible triggers of a common heart condition, including caffeine, sleep deprivation and sleeping on the left side, found that only alcohol use was consistently associated with more episodes of the heart arrhythmia.
11/24/2021 03:41 PM
Living walls can reduce heat lost from buildings by over 30%
Retrofitting existing masonry cavity walled buildings with a green or living wall could be a game-changer in helping countries achieve net-zero commitments.
11/24/2021 03:41 PM
Morning exposure to deep red light improves declining eyesight
Just three minutes of exposure to deep red light once a week, when delivered in the morning, can significantly improve declining eyesight, finds a pioneering new study.
11/24/2021 03:40 PM
A new way to generate electricity from waste heat: Using an antiferromagnet for solid devices
Researchers have discovered a giant thermoelectric effect in an antiferromagnet. The study shows, surprisingly, that antiferromagnets can have the same value of the anomalous Nernst effect as conventional ferromagnets, but without any stray magnetic fields that would otherwise affect surrounding devices. The newly discovered recipe for generating large Nernst voltages opens a new research direction for the development of highly efficient thermoelectric devices.
11/24/2021 03:38 PM
New ultrahard diamond glass synthesized
An international research team that synthesized a new ultrahard form of carbon glass with a wealth of potential practical applications for devices and electronics. It is the hardest known glass with the highest thermal conductivity among all glass materials.
11/24/2021 03:38 PM
Hubble witnesses shock wave of colliding gases in Running Man Nebula
Mounded, luminous clouds of gas and dust glow in this Hubble image of a Herbig-Haro object known as HH 45. Herbig-Haro objects are a rarely seen type of nebula that occurs when hot gas ejected by a newborn star collides with the gas and dust around it at hundreds of miles per second, creating bright shock waves. In this image, blue indicates ionized oxygen (O II) and purple shows ionized magnesium (Mg II). Researchers were particularly interested in these elements because they can be used to identify shocks and ionization fronts. This object is located in the nebula NGC 1977, which itself is part of a complex of three nebulae called The Running Man. NGC 1977 -- like its companions NGC 1975 and NGC 1973 -- is a reflection nebula, which means that it doesn't emit light on its own, but reflects light from nearby stars, like a streetlight illuminating fog. Hubble observed this region to look for stellar jets and planet-forming disks around young stars, and examine how their environment affects the evolution of such disks.
11/24/2021 03:38 PM
Collapse of ancient Liangzhu culture caused by climate change
Referred to as 'China's Venice of the Stone Age', the Liangzhu excavation site in eastern China is considered one of the most significant testimonies of early Chinese advanced civilization. More than 5000 years ago, the city already had an elaborate water management system. Until now, it has been controversial what led to the sudden collapse. Massive flooding triggered by anomalously intense monsoon rains caused the collapse, as geologists and climate researchers have now shown.
11/23/2021 08:09 PM
How eating less in early life could help with reproduction later on
New research shows how switching from a restricted diet to eating as much as you like could be beneficial for reproduction in later life. Researchers studied the eating and mating habits of the small fruit fly Drosophila melanogaster. They found that those that switched from a restricted diet to unlimited food, started mating and reproducing more.
11/23/2021 04:28 PM
Ultrashort-pulse lasers kill bacterial superbugs, spores
Researchers at Washington University School of Medicine in St. Louis have found that multidrug-resistant bacteria and bacterial spores can be killed by ultrashort-pulse lasers. The findings could lead to new ways to sterilize wounds and blood products without damaging human cells.
11/23/2021 04:28 PM
How moles change into melanoma
Melanoma researchers published a study that gives a new explanation of what causes moles to change into melanoma. These findings pave the way for more research into how to reduce the risk of melanoma, delay development, and detect melanoma early.
11/23/2021 04:28 PM
Microbes can provide sustainable hydrocarbons for the petrochemical industry
The petrochemical industry turns oil and gas into precursors used to synthesize lubricants and other critical products. Chemists show that bacteria can be metabolically engineered to generate similar precursors, providing a sustainable replacement for fossil fuels and using less energy. The microbes need only glucose. The medium-chain hydrocarbons they produce can be broken down into shorter chains and polymerized into plastics, or lengthened to make products such as diesel.
11/23/2021 04:27 PM
One year on this giant, blistering hot planet is just 16 hours long
Astronomers have discovered an ultrahot Jupiter with shortest orbit of any known gas giant planet.
11/23/2021 01:14 PM
Aspirin is linked with increased risk of heart failure in some
Aspirin use is associated with a 26% raised risk of heart failure in people with at least one predisposing factor for the condition.
11/23/2021 01:14 PM
Latte lovers rejoice! Study reveals drinking coffee could lower the risk of Alzheimer’s disease
Good news for those of us who can't face the day without their morning flat white: a long-term study has revealed drinking higher amounts of coffee may make you less likely to develop Alzheimer's disease.
11/23/2021 01:14 PM
Prehistoric mums may have cared for kids better than we thought
A new study has revealed the death rate of babies in ancient societies is not a reflection of poor healthcare, disease and other factors, but instead is an indication of the number of babies born in that era.
11/23/2021 01:13 PM
Can we perceive gender from children's voices?
Researchers report developing a database of speech samples from children ages 5 to 18 to explore two questions: What types of changes occur in children's voices as they become adults, and how do listeners adjust to the enormous variability in acoustic patterns across speakers? When they presented listeners with both syllables and sentences from different speakers, gender identification improved for sentences. They said this supports the stylistic elements of speech that highlight gender differences and come across better in sentences.
11/23/2021 01:10 PM
Meat-eating 'vulture bees' sport acidic guts
A little-known species of tropical bee has evolved an extra tooth for biting flesh and a gut that more closely resembles that of vultures rather than other bees.
11/23/2021 01:08 PM
Ancient human relative, Australopithecus sediba, 'walked like a human, but climbed like an ape'
The recovery of new lumbar vertebrae from the lower back of a single individual of the human relative, Australopithecus sediba, and portions of other vertebrae of the same female from Malapa, South Africa, together with previously discovered vertebrae, form one of the most complete lower backs ever discovered in the early hominid record and give insight into how this ancient human relative walked and climbed.
11/23/2021 01:07 PM
Analysis of Mars’s wind-induced vibrations sheds light on the planet’s subsurface properties
NASA's Mars mission InSight probes the geology of the Elysium Planitia, finding alternate layers of basalt and sediments. An international team of scientists compares on-the-ground data with data from models, which helps to understand, e.g., the surface's load-bearing capacity and trafficability.
11/22/2021 05:27 PM
Taking it easy as you get older? Wrong
A team of evolutionary biologists and biomedical researchers lay out evolutionary and biomedical evidence showing that humans, who evolved to live many decades after they stopped reproducing, also evolved to be relatively active in their later years. The researchers say that physical activity later in life shifts energy away from processes that can compromise health and toward mechanisms in the body that extend it. They hypothesize that humans evolved to remain physically active as they age -- and in doing so to allocate energy to physiological processes that slow the body's gradual deterioration over the years. This guards against chronic illnesses such as cardiovascular disease, type 2 diabetes, and even some cancers.
11/22/2021 05:26 PM
Snow cover critical for revegetation following forest fires
With wildfires devastating mountain ecosystems across the western United States, their successful forest revegetation recovery hinges on, among other factors, an adequate lasting snowpack, according to new research.
11/22/2021 01:55 PM
Scientist reveals cause of lost magnetism at meteorite site
A scientist has discovered a method for detecting and better defining meteorite impact sites that have long lost their tell-tale craters. The discovery could further the study of not only Earth's geology but also that of other bodies in our solar system.
11/22/2021 01:55 PM
Hurricanes expected to linger over Northeast cities, causing greater damage
By the late 21st century, northeastern U.S. cities will see worsening hurricane outcomes, with storms arriving more quickly but slowing down once they've made landfall. As storms linger longer over the East Coast, they will cause greater damage along the heavily populated corridor, according to a new study.
11/22/2021 01:55 PM
One in five galaxies in the early universe could still be hidden behind cosmic dust
Astronomers have discovered two previously invisible galaxies 29 billion light-years away. Their discovery suggests that up to one in five such distant galaxies remain hidden from our telescopes, camouflaged by cosmic dust. The new knowledge changes perceptions of our universe's evolution since the Big Bang.
11/22/2021 01:54 PM
Cause of biodiversity loss: Logistical Herculean tasks
The question of the causes of species extinction confronts science with complex tasks.
11/22/2021 01:54 PM
High-speed propeller star is fastest spinning white dwarf
A white dwarf star that completes a full rotation once every 25 seconds is the fastest spinning confirmed white dwarf, according to a team of astronomers.
11/22/2021 01:54 PM
Clear as (quasi) crystal: Scientists discover the first ferromagnetic quasicrystals
Since the discovery of quasicrystals (QCs), solids that mimic crystals in their long-range order but lack periodicity, scientists have sought physical properties related to their peculiar structure. Now, an international group of researchers report a long-range magnetic order in QCs with icosahedral symmetry that turn ferromagnetic below certain temperatures. This groundbreaking discovery opens doors to future research on these exotic materials.
11/22/2021 01:54 PM
Digital teaching: Opportunity or challenge?
Researchers explain why digital teaching cannot replace face-to-face teaching in university education, but can certainly be seen as a complementary tool. The future of teaching and learning may lie in so-called blended learning, a mix of face-to-face and online education.
11/22/2021 01:54 PM
How people understand other people
To successfully cooperate or compete with other people in everyday life, it is important to know what the other person thinks, feels, or wants. Researchers have explored which strategies people use to understand other people.
11/22/2021 01:54 PM
'Mantle wind' blows through slab window beneath Panama
Volcanic gases are helping researchers track large-scale movements in Earth's deep interior. Scientists have discovered anomalous geochemical compositions beneath Panama.
11/22/2021 01:54 PM
Feast or forage: Study finds circuit that helps a brain decide
By integrating multiple sensory inputs, a loop of mutual inhibition among a small set of neurons allows worms to switch between long-lasting behavioral states.
11/22/2021 01:54 PM
Pathway for ‘green ammonia’ opens in a combined experimental and computational study
A combined experimental and computational study shows promising results for a new class of catalysts producing ammonia under mild conditions.
11/22/2021 01:54 PM
Giving social support to others may boost your health
When it comes to your health, being willing to give social support to your spouse, friends and family may be just as important as receiving assistance, a new study suggests.
11/22/2021 01:53 PM
Gold-based cancer therapy could face competition from other substances
The gold complex auranofin has traditionally been used for treating rheumatism but is also being evaluated as a treatment for certain forms of cancer. Researchers now show that other molecules that inhibit the same biological system have a more specific effect than auranofin and therefore may have greater potential as cancer therapies.
11/22/2021 01:53 PM
Study digs up roles bacteria play in global carbon cycle
Researchers have developed an innovative technique to track microbes and understand the various ways they process soil carbon, findings that add to our knowledge of how bacteria contribute to the global carbon cycle.