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Archaeologists discover Incan tomb in Peru
Peruvian archaeologists discovered an Incan tomb in the north of the country where an elite member of the pre-Columbian empire was buried, one of the investigators announced Friday.
1h ago phys.org
EPA hits chemical maker for not notifying on new compounds
A chemical maker's North Carolina plant may have broken federal law by failing to notify the U.S. Environmental Protection Agency before it started manufacturing and repurposing new industrial compounds, the agency said this week.
2h ago phys.org
Runner recalls desperate fight with thrashing mountain lion
Fear washed over Travis Kauffman as he wrestled with a thrashing mountain lion that attacked him on a Colorado mountain trail, but then his fighting instinct took over as he found its neck with his foot and suffocated the young cat.
2h ago phys.org
Beloved rhinoceros dies at age 49 in North Carolina zoo
The North Carolina Zoo says that a beloved rhinoceros named Stanley has died.
2h ago phys.org
Graphene-based wearables for health monitoring, food inspection and night vision
Scientists have developed dozens of new graphene-based prototypes. These technologies aim to turn mobile phones into life saving devices.
9h ago sciencedaily.com
The prospects of american strawberries
A comprehensive review led by Jayesh Samtani of Virginia Tech and Curt Rom of the University of Arkansas encapsulates an understanding of the challenges, needs, and opportunities of strawberry growers across the United States. Samtani and Rom formed and gathered support from a team of 12 researchers from 10 different states as they embarked on an academic journey designed to generate an effective guideline essential for research, policy, and marketing strategies for the strawberry industry across the country, and to enable the development of general and region-specific educational and production tools.
11h ago phys.org
Study shows hope for fighting disease known as Ebola of frogs
Despite widespread infection, some frog populations are surviving a deadly disease that is the equivalent of mankind's Ebola virus. The reason —genetic diversity.
11h ago phys.org
Grazing Deer Alter Forest Acoustics
Deer populations have exploded in North American woodlands, changing forest ecology—and how sounds, like birdsong, travel through the trees. Christopher Intagliata reports. -- Read more on ScientificAmerican.com
11h ago flex.acast.com
NASA catches Tropical Cyclone Gelena's post-tropical transition
Tropical cyclones can become post-tropical before they dissipate, meaning they can become sub-tropical, extra-tropical or a remnant low pressure area.  As Tropical Cyclone Gelena transitioned into a subtropical storm, NASA's Aqua satellite provided a visible image of the storm.
11h ago phys.org
Genetic vulnerability to menthol cigarette use
A genetic variant found only in people of African descent significantly increases a smoker's preference for cigarettes containing menthol, a flavor additive. The variant of the MRGPRX4 gene is five to eight times more frequent among smokers who use menthol cigarettes than other smokers. The multi-ethnic study is the first to look across all genes to identify genetic vulnerability to menthol cigarettes.
12h ago sciencedaily.com
Drug to rejuvenate muscle cells
Researchers have developed a promising drug that has proven to significantly increase muscle size, strength and metabolic state in aged mice, according to a new study.
12h ago sciencedaily.com
Open-science model for drug discovery expands to neurodegenerative diseases
Parkinson's disease and Amyotrophic Lateral Sclerosis are the newest frontiers for open science drug discovery, a global movement led by academic scientists that puts knowledge sharing and medication affordability ahead of patents and profits.
12h ago sciencedaily.com
Hope for fighting disease known as Ebola of frogs
Despite widespread infection, some frog populations are surviving a deadly disease that is the equivalent of humankind's Ebola virus. The reason -- genetic diversity.
12h ago sciencedaily.com
The prospects of American strawberries
Researchers have embarked on an academic journey designed to generate an effective guideline essential for research, policy, and marketing strategies for the strawberry industry across the country, and to enable the development of general and region-specific educational and production tools.
12h ago sciencedaily.com
Space junk harpooned like whale in orbit-cleanup test
A harpoon flung from a satellite has successfully captured a piece of pretend space junk, like a whale.
13h ago phys.org
What rising seas mean for local economies
Impacts from climate change are not always easy to see. But for many local businesses in coastal communities across the United States, the evidence is right outside their doors—or in their parking lots.
14h ago phys.org
Faculty beliefs about intelligence predict racial achievement gaps in STEM classes
In a major analysis of university faculty and students in science, technology, engineering and math, Indiana University social psychologists found that professors' beliefs about intelligence play a measurable role in the success of all students—with the strongest effects for underrepresented students taking their first college-level STEM courses.
14h ago phys.org
Is This the Footprint of One of the Last Neandertals?
The fossilized print, found in Gibraltar, is said to date to 28,000 years ago, which might mean it belonged to a Neandertal. But not everyone agrees with that interpretation -- Read more on ScientificAmerican.com
14h ago scientificamerican.com
Biologists identify honeybee 'clean' genes known for improving survival
The key to breeding disease-resistant honeybees could lie in a group of genes—known for controlling hygienic behaviour—that enable colonies to limit the spread of harmful mites and bacteria, according to genomics research conducted at York University.
14h ago phys.org
A new study looks at ways to cut roadkill numbers for small and medium-sized mammals
Most motorists pay little attention to the amount of roadkill they drive over or past on the highway, except when swerving to avoid it.
14h ago phys.org
Illinois Democrats ask Evers to review Foxconn plant impact
Illinois congressional Democrats have asked Wisconsin's new Democratic governor to re-evaluate the environmental impact of a sprawling plant that Foxconn Technology Group plans to build near the states' border, saying they are concerned it could exacerbate flooding in Chicago's northern suburbs.
15h ago phys.org
NASA tracks Tropical Cyclone Oma as warnings remain for Vanuatu
Tropical Cyclone Oma continued to stay just west of Vanuatu in the Southern Pacific Ocean as NASA-NOAA's Suomi NPP satellite passed overhead and captured an image of the tropical storm.
15h ago phys.org
Year in space put US astronaut's disease defenses on alert
Nearly a year in space put astronaut Scott Kelly's immune system on high alert and changed the activity of some of his genes compared to his Earth-bound identical twin, researchers said Friday.
16h ago phys.org
Boil-water advisory ends in Dayton, Ohio
The city of Dayton, Ohio, is telling residents their water is OK to use again without being boiled first.
16h ago phys.org
Brexit uncorks fears for French wine industry
French wine makers may be "selling like crazy" to Britain as their clients stock up ahead of Brexit, but they say the country's looming departure from the European Union promises nothing but problems.
16h ago phys.org
US Facebook fine over privacy could be in billions: reports
A US investigation into privacy violations by Facebook could result in a record fine running to billions of dollars, media reports said Friday.
16h ago phys.org
Scientists fine-tune method to save rhinos
Only two northern white rhinos exist in the world: both are female and neither can bear calves. But scientists have not given up hope of saving the species from extinction.
17h ago phys.org
Free access to research will help save horses and ponies
Laminitis—a complex, common and often devastating disease—is the second biggest killer of domestic horses. Now a body of important research on it has been compiled and shared online for equine vets and others to access.
17h ago phys.org
Researchers discover anti-laser masquerading as perfect absorber
Researchers at Duke University have discovered that a perfect absorber of electromagnetic waves they described in a 2017 paper can easily be tweaked into a sort of "time-reversed laser" known as a coherent perfect absorber (CPA).
17h ago phys.org
Danish economist picked to be new UN environment chief
UN Secretary-General Antonio Guterres has picked Danish economist and environmentalist Inger Andersen to be the new UN environment chief, turning the page on a scandal over expenses that rocked the UN agency, according to a letter seen by AFP on Friday.
17h ago phys.org
Patients' own cells could be the key to treating Crohn's disease
A new technique using patients' own modified cells to treat Crohn's disease has been proven to be effective in experiments using human cells, with a clinical trial of the treatment expected to start in the next six months.
17h ago sciencedaily.com
Tidal tails: The beginning of the end of an open star cluster
In the course of their life, open star clusters continuously lose stars to their surroundings. The resulting swath of tidal tails provides a glimpse into the evolution and dissolution of a star cluster. Thus far only tidal tails of massive globular clusters and dwarf galaxies have been discovered in the Milky Way system. In open clusters, this phenomenon existed only in theory. Researchers have now finally verified the existence of such a tidal tail in the star cluster closest to the Sun, the Hyades. An analysis of measurements from the Gaia satellite led to the discovery.
17h ago sciencedaily.com
Bioengineers create ultrasmall, light-activated electrode for neural stimulation
Scientists have detailed a less invasive method of neural stimulation that would use an untethered ultrasmall electrode activated by light, a technique that may mitigate damage done by current methods.
17h ago sciencedaily.com
Be Kind to Extraterrestrials
We need to tread lightly if we encounter alien ecosystems -- Read more on ScientificAmerican.com
17h ago blogs.scientificamerican.com
Spare 10 minutes to make science leap forward
Today sees the launch of an innovative Citizen Science Project by Diamond Light Source, the UK's national synchrotron science facility.The project uses a crowdsourcing model to call on people of all ages around the world to help speed up the analysis of the terabytes of data that Diamond generates every day. The first task set for citizen scientists is to spend a few minutes looking at a series of screens to identify viruses. More tasks will be set for other targets over the next three years. This will help train Artificial Intelligence systems (AI) and develop new ways of segmenting data, with the aim to automate the data segmentation processes. Doing this will dramatically speed up scientists' ability to understand their research data in a matter of days rather than the current weeks, allowing for a faster path to understanding disease structures, and perhaps speeding up pathways to drug development.
17h ago phys.org
Earth first origins project seeks to replicate the cradle of life
The evolution of planet Earth and the emergence of life during its first half-billion years are inextricably linked, with a series of planetwide transformations—formation of the ocean, evolution of the atmosphere, and the growth of crust and continents—underpinning the environmental stepping stones to life. But how, and in what order, were the ingredients for life on Earth manufactured and assembled?
17h ago phys.org
Image: Jewels of the Maldives
Copernicus Sentinel-2 brings you some of the jewels of the Maldives for Valentine's week. Arguably one of the most romantic destinations in the world, the Maldives lie in the Indian Ocean about 700 km southwest of Sri Lanka. The nation is made up of more than 1000 coral islands spread across more than 20 ring-shaped atolls.
17h ago phys.org
Tide gauges capture tremor episodes in cascadian subduction zone
Hourly water level records collected from tide gauges can be used to measure land uplift caused by episodic tremor and slip of slow earthquakes in the Cascadia Subduction Zone, according to a new report in the Bulletin of the Seismological Society of America.
17h ago phys.org
New research offers insights into what keeps gay hockey players from coming out
The overriding threat of becoming a distraction is the main barrier keeping professional hockey players from identifying publicly as gay, even though such an admission would likely accelerate a more tolerant hockey culture, according to new research out of the University of Alberta.
17h ago phys.org
Light bulbs in the crosshairs of Trump administration's environmental rollbacks
The Trump administration has been on a spree of environmental rollbacks, including air and auto emissions. Its next target: light bulbs.
18h ago phys.org
Scientists Track the Source of Soot That Speeds Arctic Melt
Heat-absorbing black carbon comes from fossil fuels in winter and biomass burning in summer -- Read more on ScientificAmerican.com
18h ago scientificamerican.com
Dog burial as common ritual in Neolithic populations of north-eastern Iberian Peninsula
Coinciding with the Pit Grave culture (4200-3600 years before our era) in Southern Europe, the Neolithic communities of the northeastern Iberian Peninsula conducted ceremonial activity related to the sacrifice and burial of dogs. The high number of cases recorded in Catalonia suggests it was a general practice, and it proves the tight relationship between humans and these animals, which, apart from being buried next to them, were fed a diet similar to that of humans.
18h ago phys.org
Researchers crack mystery of past maternal mortality rates
Researchers at The Australian National University (ANU) have developed the first method for determining maternal mortality rates in prehistoric populations based on archaeological records.
18h ago phys.org
A river of stars in the solar neighborhood
Astronomy & Astrophysics publishes the work of researchers from the University of Vienna, who have found a river of stars, a stellar stream in astronomical parlance, covering most of the southern sky. The stream is relatively nearby and contains at least 4000 stars that have been moving together in space since they formed, about 1 billion years ago. Due to its proximity to Earth, this stream is a perfect workbench on which to test the disruption of clusters, measure the gravitational field of the Milky Way, and learn about coeval extrasolar planet populations with upcoming planet-finding missions. For their search, the authors used data from the ESA Gaia satellite.
18h ago phys.org
Virus-infested fungus could help cut chemical pesticides
The evidence against chemical pesticides is mounting. An estimated 7m people are at risk from exposure to pesticides globally, while a million a year suffer or die from pesticide associated diseases. And that says nothing of the damage they are thought to be doing to other wildlife. Yet when humanity needs to produce approximately two billion tons of crops every year to feed itself and the population is still increasing, it's difficult to see how we can grow the necessary food without pesticides.
18h ago phys.org
Animal populations bounce back faster in marine protected areas
A new paper in the American Naturalist discusses the significant role marine protected areas can play in preventing the extinction of commercially harvested species like abalone. MBARI Postdoctoral Fellow Charles A. Boch participated in the study, which examined abalone population models and how protected areas can ensure animals survive catastrophic events that could otherwise wipe out a population.
18h ago phys.org
How far should organizations be able to go to defend against cyberattacks?
The deluge of cyberattacks sweeping across the world has governments and companies thinking about new ways to protect their digital systems, and the corporate and state secrets stored within. For a long time, cybersecurity experts have erected firewalls to keep out unwanted traffic and set up decoy targets on their networks to distract hackers who do get in. They have also scoured the internet for hints about what cybercriminals might be up to next to better protect themselves and their clients.
18h ago phys.org
Farewell, Opportunity: Rover dies, but its hugely successful Mars mission is helping us design the next one
NASA's Opportunity rover on Mars has been officially pronounced dead. Its amazingly successful mission lasted nearly 15 years, well beyond its initial three-month goal. Opportunity provided the first proof that water once existed on Mars and shaped its surface, a crucial piece of knowledge informing both current and future missions.
18h ago phys.org
Environmental noise found to enhance the transport of energy across a line of ions
A team of researchers affiliated with several institutions in Austria and Germany has shown that introducing environmental noise to a line of ions can lead to enhanced transport of energy across them. In their paper published in Physical Review Letters, the researchers describe their experiments and why they believe their findings will be helpful to other researchers.
18h ago phys.org
New study of fossil plants shows the emergence of the Pacific Northwest's temperate forests
The iconic evergreen forests of the Pacific Northwest haven't always been here.
18h ago phys.org
The friendly extortioner takes it all
Cooperating with other people makes many things easier. However, competition is also a characteristic aspect of our society. In their struggle for contracts and positions, people have to be more successful than their competitors and colleagues. When will cooperation lead to success, and when is egoism more effective? Scientists from the Max Planck Institute for Evolutionary Biology in Ploen have developed an experiment that enables them to examine the success rate of cooperative and egoistic behaviour strategies. A strategy referred to as "extortion" is particularly successful, according to the researchers. This strategy that alternates between cooperation and egoism is difficult for the co-player to resist. The extortion strategy is especially effective when there is strong competitive pressure – that is if there can be only one winner.
18h ago phys.org
Pages and prejudice: How queer texts could fight homophobia in Australian schools
Recently, the Australian Association for the Teaching of English (AATE)—the peak professional body for Australian English teachers—published a special issue of the journal English in Australia entitled "Love in English." It addressed the continued marginalisation of some genders and sexualities within the classroom.
18h ago phys.org
Efforts to control cyber weapons ignore the agents who use them
Reports of malicious and targeted cyber attacks are becoming increasingly common around the world. In early February, for example, Australia's security agencies revealed there were investigating an attempted hack on the country's parliament, and hadn't ruled out another country being behind it.
18h ago phys.org
Protecting human heritage on the moon: Don't let 'one small step' become one giant mistake
Why did the hominin cross the plain? We may never know. But anthropologists are pretty sure that a smattering of bare footprints preserved in volcanic ash in Laetoli, Tanzania bear witness to an evolutionary milestone. These small steps, taken roughly 3.5 million years ago, mark an early successful attempt by our common human ancestor to stand upright and stride on two feet, instead of four.
18h ago phys.org
How to fight climate change in agriculture while protecting jobs
Agriculture has become a carbon-intensive endeavour. Crop, livestock and fossil fuel use in agriculture account for about 25 per cent of global greenhouse gas (GHG) emissions.
18h ago phys.org
Reduce children's test anxiety with these tips—and a re-think of what testing means
The term "test anxiety" typically conjures up images of a high school or university student obsessing over an upcoming exam.
19h ago phys.org
After 90 years, a better way to measure the composition of paper
Researchers at the National Institute of Standards and Technology (NIST), in collaboration with the U.S. Government Publishing Office (GPO), have developed a novel, nondestructive method to rapidly measure the wood and non-wood fiber components in paper.
19h ago phys.org
Tide gauges capture tremor episodes in cascadian subduction zone
Hourly water level records collected from tide gauges can be used to measure land uplift caused by episodic tremor and slip of slow earthquakes in the Cascadia Subduction Zone, according to a new report.
19h ago sciencedaily.com
A nearby river of stars
Astronomers have found a river of stars, a stellar stream in astronomical parlance, covering most of the southern sky. The stream is relatively nearby and contains at least 4000 stars that have been moving together in space since they formed, about 1 billion years ago.
19h ago sciencedaily.com
Laminitis research to help save horses and ponies
Laminitis -- a complex, common and often devastating disease -- is the second biggest killer of domestic horses. Now a body of important research on it has been compiled.
19h ago sciencedaily.com
From Chelyabinsk to Cuba: The meteor connection
On February 1, 2019 a bright meteor crossed the sky over Cuba in the middle of the day. The phenomenon, which was followed by a smoke trail (a characteristic cloud left by the burn in the atmosphere of a meteoroid) and a sonic boom, was witnessed by thousands of locals and tourists in the region of Pinar del Rio (western side of the island).
19h ago phys.org
Chemical data mining boosts search for new organic semiconductors
Organic semiconductors are lightweight, flexible and easy to manufacture. But they often fail to meet expectations regarding efficiency and stability. Researchers at the Technical University of Munich (TUM) are now deploying data mining approaches to identify promising organic compounds for the electronics of the future.
19h ago phys.org
Companies with more financial analysts produce more and better-quality patents
A recent study conducted by researchers from the Universidad Carlos III de Madrid (UC3M), in collaboration with the Universidad Autónoma de Barcelona (UAB), explores the role of financial analysts on firms' innovation strategy and outcome. This study concludes that financial analysts can help companies to invest more efficiently in innovation and therefore produce a higher number of patents of better quality.
19h ago phys.org
Biocolonizer species are putting the conservation of the granite at Machu Picchu at risk
The UPV/EHU's IBeA research group has used a non-destructive methodology to determine the role of specific algae, lichens, mosses and cyanobacteria that may be causing exfoliation and delamination processes that are degrading the Sacred Rock of Machu Picchu, one of the most important symbols in the Peruvian archaeological city.
19h ago phys.org
Carbon capture on power stations burning woodchips is not the green gamechanger many think it is
The UK's efforts to develop facilities to remove carbon emissions from power stations took a step forward with news of a demonstrator project getting underway at the Drax plant in north Yorkshire. Where most electricity carbon capture projects have focused on coal-fired power, the Drax project is the first to capture carbon dioxide (CO₂) from a plant purely burning wood chips – or biomass, to use the industry jargon.
19h ago phys.org
Laser pulses light the way to tuning topological materials for spintronics and quantum computing
Scientists at the U.S. Department of Energy's Ames Laboratory have discovered a means of controlling the surface conductivity of a three-dimensional (3-D) topological insulator, a type of material that has potential applications in spintronic devices and quantum computing.
19h ago phys.org
Electronic waste is recycled in appalling conditions in India
The world produces 50 million tonnes of electronic and electrical waste (e-waste) per year, according to a recent UN report, but only 20% is formally recycled. Much of the rest ends up in landfill, or is recycled informally in developing nations.
19h ago phys.org
Watch a harpoon successfully spear a piece of space junk
19h ago technologyreview.com
Kindness works: Teachers' helping behaviors related to better student relationships and academic confidence
Think back to your favorite teacher you had in school. Now, think about the subject they taught—you probably got a better grade in that subject than other classes.
19h ago phys.org
3-D printed nanomaterial shows different transparencies and colours
Metallic nanoparticles have been used as glass colorants since the Roman Empire. One of the most famous pieces of pottery from the period is the Lycurgus cup. The nanoparticles embedded in this cup have an optical peculiarity, presenting different colours depending on the angle of the illumination. This effect is called dichroism. Now, scientists from Wageningen University & Research have made 3-D printed objects showing this dichroic effect.
19h ago phys.org
Radio telescope gets upgrade at Brookhaven lab
A radio telescope at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory has received a significant upgrade, advancing from one dish to four. The upgrades are part of the Laboratory's ongoing effort to test the merits of a radio telescope for a potential future project between national labs and DOE-sponsored universities. The scientists' ultimate goal is to look deep into the universe and gain a better understanding of periods of accelerated expansion and the nature of dark energy.
19h ago phys.org
Video: Permafrost in the Arctic - what increasing temperatures mean for the planet
The fact is, the planet is getting warmer, and with the temperature increase comes an array of issues.
19h ago phys.org
The world has become more peaceful
Although the war in Syria is in its eighth year, statisticians have established that the world is becoming increasingly peaceful.
20h ago phys.org
Exercise might improve health by increasing gut bacterial diversity
Research has suggested that the efficiency with which we transport oxygen to our tissues (cardiorespiratory fitness) is a far greater predictor of gut microbiota diversity than either body fat percentage or general physical activity.
20h ago sciencedaily.com
'Cellular barcoding' reveals how breast cancer spreads
A cutting-edge technique called cellular barcoding has been used to tag, track and pinpoint cells responsible for the spread of breast cancer from the main tumour into the blood and other organs.
20h ago sciencedaily.com
'Seeing' tails help sea snakes avoid predators
New research has revealed the fascinating adaptation of some Australian sea snakes that helps protect their vulnerable paddle-shaped tails from predators.
20h ago sciencedaily.com
From vibrations alone, acacia ants can tell nibbles from the wind
Researchers find that the ants of the acacia tree are tipped off to the presence of herbivores by vibrations that run throughout the trees when an animal gets too close or begins to chew. As a result, the insects begin patrolling the acacia's branches more actively. Remarkably, the researchers show, the ants don't react when the trees' movements are caused only by the wind.
20h ago sciencedaily.com
On the origin of B1 cells
A new study may resolve a decades-old debate in immunology: researchers report that distinct progenitor cells are not required for the development of B1 cells. Instead, the team's experiments show that a B1-typical B-cell receptor can reprogram B2 cells into B1 cells, suggesting that B1 cells emerge as a consequence of their special B-cell receptors.
20h ago sciencedaily.com
New live-imaging technique reveals cellular repair crew plugging leaky biological barrier
Suppose you live in a brick house and notice cracks in the mortar that let in cold air, rain and insect pests. You might call a brick mason to repair those leaks and to restore the barrier that keeps the great outdoors from getting inside.
20h ago sciencedaily.com
Innovative bio-based air filter could transform air filtration, possibly reduce airborne allergens indoors
The World Health Organization estimates that 90 percent of people breathe polluted air, which causes 7 million premature deaths each year. That's why Ongenia LLC, a Purdue-affiliated startup, is developing a bio-material alternative to standard heating, ventilation and air conditioning (HVAC) units' air filters.
20h ago phys.org
Tornado fatalities continue to fall, despite population growth in Tornado Alley
The Louisiana Purchase in 1803 ushered in a movement of westward migration in the United States, and with new territory came new challenges – and weather phenomena. The rate of tornado-related fatalities increased faster than the rate of population growth until the start of the 20th century, according to a new study in the journal Weather, Climate, and Society.
20h ago phys.org
CMS gets first result using largest-ever LHC data sample
Just under three months after the final proton–proton collisions from the Large Hadron Collider (LHC)'s second run (Run 2), the CMS collaboration has submitted its first paper based on the full LHC dataset collected in 2018 – the largest sample ever collected at the LHC – and data collected in 2016 and 2017. The findings reflect an immense achievement, as a complex chain of data reconstruction and calibration was necessary to be able to use the data for analysis suitable for a scientific result.
20h ago phys.org
Is hemp the same thing as marijuana?
There's been a lot of discussion about hemp recently, since the 2018 Farm Bill made it legal for farmers to grow industrial hemp for the first time since the passage of the 1970 Controlled Substances Act (or, practically speaking, since the 1937 Marihuana Tax Act).
20h ago phys.org
Spintronics by 'straintronics': Switching superferromagnetism with electric-field induced strain
Switching magnetic domains in magnetic memory normally requires magnetic fields generated by electrical currents, hence requiring large amounts of electrical power. Now, teams from France, Spain and Germany have demonstrated the feasibility of another approach at the nanoscale: "We can induce magnetic order on a small region of our sample by employing a small electric field instead of using magnetic fields," Dr. Sergio Valencia, HZB, says.
20h ago phys.org
Preserved leaves reveal 7000 years of rainfall and drought
A study by University of Adelaide researchers and Queensland Government scientists has revealed what south-east Queensland's rainfall was like over the last 7000 years – including several severe droughts worse and longer lasting than the 12-year Millennium Drought.
20h ago phys.org
Venezuela Is Unraveling—So Is Its Science
Research has ground to a halt, and many scientists have left the country out of desperation -- Read more on ScientificAmerican.com
20h ago scientificamerican.com
In zebrafish eggs, most rapidly growing cell inhibits neighbors through mechanical signals
"The winner takes it all, the loser standing small"—that's not just true in the famous ABBA song, but also in animal development. Frequently, a group of cells starts out all being the same. But then one cell puts the brake on its neighbors, sending inhibitory signals that stop their differentiation. The "winning" cell, in the end, is different from its neighbors. So far, the only signalling mechanism known to be responsible for such a lateral inhibition was the Notch-Delta signalling pathway. Postdoc Peng Xia and Professor Carl-Philipp Heisenberg at the Institute of Science and Technology Austria (IST Austria), have now described a new mechanism for lateral inhibition in a publication in today's edition of Cell. In zebrafish ovarian follicles, granulosa cells in the envelope that surround the oocyte do not use the Notch-Delta signaling pathway for lateral inhibition, but compete mechanically—the winning cell grows more rapidly and inhibits the growth of its neighbors by mechanically compressing them, thereby becoming the sole micropyle precursor cell—a cell that later plays an important role for the fertilisation of the egg.
20h ago phys.org
How accurate are dog-activity trackers?
There are countless gadgets available these days for people to track everything from our heart rate to our stress levels. So perhaps it's no surprise that there also are quite a few products that now claim to similarly monitor your dog's activity and health, including tracking what your pet is up to all day at home while you're at work.
20h ago phys.org
The smallest skeletons in the marine world observed in 3-D by synchrotron techniques
Coccolithophores are microscopic marine algae that use carbon dioxide to grow, and release carbon dioxide when they create their miniature calcite shells. These tiny, abundant planktonic microorganisms could therefore be seriously impacted by current increasing carbon dioxide emissions. Scientists from the CNRS, Le Mans Université, Sorbonne Université, Aix-Marseille Université and the ESRF, the European Synchrotron, have revealed the nano-level 3-D structure of their calcite shells, providing new perspectives for assessment of the role of these tiny microorganisms in the global carbon cycle. A study published in Nature Communications shows new correlations between their mass and the size of the organic template around which the calcite nucleation and growth take place.
20h ago phys.org
How income and attitudes affect greenhouse gas emissions
The higher the income of individuals living in Switzerland, the higher their greenhouse gas emissions. But to what extent do differences in income actually have an effect on emissions, and to what extent do household emissions differ? The main differences were found in the areas of mobility and housing. For nutrition, the differences in individual emissions are less pronounced. These are the findings of a study conducted by social scientists at ETH Zurich.
20h ago phys.org
Carbonaceous chondrites provide clues about the delivery of water to Earth
An international study led by researchers from the Institute of Space Sciences, from the Spanish National Research Council (CSIC) and the Institut d'Estudis Espacials de Catalunya has discovered that carbonaceous chondrites, a class of meteorites, incorporated hydrated minerals along with organic material from the protoplanetary disk before the formation of planets. The researchers, who have published their results in the journal Space Science Reviews, note that these meteorites played "an important role in the primordial Earth's water enrichment" because they facilitated the transportation of volatile elements that were accumulated in the external regions of the so-called protoplanetary disk from which planets were formed.
20h ago phys.org
How proteins become embedded in a cell membrane
Many proteins with important biological functions are embedded in a biomembrane in the cells of humans and other living organisms. But how do they get in there in the first place? Researchers in the Department of Biosystems Science and Engineering at ETH Zurich have investigated the matter.
20h ago phys.org
Why seeing marginalized communities in pop culture matters
It was just four years ago that the social media hashtag #OscarsSoWhite was trending, helping to spark a national outcry regarding the lack of diversity in Oscar-nominated films and Hollywood in general. But it's not just the film and TV industry that fail to represent the diversity of our society, it's most forms of popular culture. Can this be dismissed as "identity politics"? Why should we care?
20h ago phys.org
Where is the universe hiding its missing mass?
Astronomers have spent decades looking for something that sounds like it would be hard to miss: about a third of the "normal" matter in the Universe. New results from NASA's Chandra X-ray Observatory may have helped them locate this elusive expanse of missing matter.
21h ago phys.org
Ancient Earth's Weakened Magnetic Field May Have Driven Mass Extinction
When our planet’s magnetosphere nearly disappeared 565 million years ago, it may have almost taken all life with it -- Read more on ScientificAmerican.com
21h ago scientificamerican.com
AI is reinventing the way we invent
The biggest impact of artificial intelligence will be to help humans make discoveries we couldn’t make on our own.
22h ago technologyreview.com
The Risks of Water Insecurity
It’s found all over the world and in nearly every corner of the U.S., and it’s especially dangerous for children -- Read more on ScientificAmerican.com
22h ago blogs.scientificamerican.com
China's Didi to restructure following passenger murders
Chinese ride-hailing leader Didi Chuxing will streamline operations and make cuts to non-core business units as it doubles down on safety after the murders of two passengers clobbered its image, a source familiar with the plans told AFP.
22h ago phys.org
Humpback Whale Calls Remain Constant over Decades
Whales in southeastern Alaska produce “shrieks,” “moans” and “squeegies” that persist over generations  -- Read more on ScientificAmerican.com
22h ago scientificamerican.com
Surprise findings turn up the temperature on the study of vernalization
Researchers have uncovered new evidence about the agriculturally important process of vernalization in a development that could help farmers deal with financially damaging weather fluctuations.
23h ago phys.org
Facebook is set to pay a multibillion-dollar fine to settle a US privacy probe
23h ago technologyreview.com
NASA’s new telescope will investigate the evolution of the universe
23h ago technologyreview.com
Drone disrupts flights from Dubai
Suspected drone activity briefly disrupted flight departures Friday from Dubai International Airport, the world's busiest for international traffic, the airport said.
1d ago phys.org
Alibaba takes stake in Chinese video platform Bilibili
Alibaba has bought an eight percent stake in Chinese online video sharing and entertainment service Bilibili for an undisclosed amount, state news agency Xinhua reported.
1d ago phys.org
European car sales begin 2019 in reverse
European car sales fell by 4.6 percent in January from the same month last year, an industry body said Friday, in another worrying sign of economic slowdown.
1d ago phys.org
Victory or catastrophe? Amazon's pull-out leaves New York divided
Thousands of lost jobs or a victory against a monolith: reactions were sharply divided Thursday after Amazon abandoned its plans for a new headquarters in New York.
1d ago phys.org
Tiny particles can switch back and forth between phases
Three years ago, when Richard Robinson, associate professor of materials science and engineering, was on sabbatical at Hebrew University in Israel, he asked a graduate student to send him some nanoparticles of a specific size.
1d ago phys.org
Report: Facebook, FTC discussing 'multibillion dollar' fine
A report says Facebook and the Federal Trade Commission are negotiating a "multibillion dollar" fine for the social network's privacy lapses.
1d ago phys.org
US judge rules against butterfly sanctuary opposed to Trump's wall
A US judge ruled Thursday against a butterfly sanctuary that had sued to keep President Donald Trump's proposed border wall from cutting the refuge in two.
1d ago phys.org
Facebook taps user data to defend workers from threat
Facebook gathers intelligence from its platform to identify people who threaten the firm or its workers, the social network said Thursday in response to media reports of the security tactic.
1d ago phys.org
Hong Kong seizes $1m of rhino horn in record airport haul
Two men carrying at least 24 severed rhino horns were arrested in Hong Kong airport by customs officers who said it was their largest ever seizure of rhino contraband smuggled by air passengers.
1d ago phys.org
Roblox, the game platform teaching young kids to code
With its Lego-like avatars and easy-to-learn coding for budding programmers, the online gaming app Roblox has cornered the market in younger gamers, with 80 million monthly users, many of them under 16.
1d ago phys.org
Tasmania fires may 'wipe out' ancient species
Tasmania's ancient rainforest and alpine flora species face an uncertain future, scientists have warned, after out-of-control bushfires consumed vast tracts of wild bushland.
1d ago phys.org
In America, high-speed train travel is off track
California's suspension this week of a high-speed rail project underscores the up-hill battle the modern mode of transport faces in the United States—including myriad cultural, political and economic obstacles.
1d ago phys.org
Fears flood water runoff could 'smother' Barrier Reef
Runoff from recent floods in northern Australia is flowing onto parts of the Barrier Reef, scientists said Friday, starving coral of light and providing fodder for the predatory crown-of-thorns starfish.
1d ago phys.org
Prickly pears: 'humble' cactus brings hope to Algeria
For generations Algerians like the Gueldasmi family have barely eked out a living growing prickly pear fruits, but thanks to the cactus's new found virtues their lives are steadily improving.
1d ago phys.org
NASA heading back to Moon soon, and this time to stay
NASA is accelerating plans to return Americans to the Moon, and this time, the US space agency says it will be there to stay.
1d ago phys.org
Amazon's exit could scare off tech companies from New York
Amazon jilted New York City on Valentine's Day, scrapping plans to build a massive headquarters campus in Queens amid fierce opposition from politicians angry about nearly $3 billion in tax breaks and the company's anti-union stance.
1d ago phys.org
'Seeing' tails help sea snakes avoid predators
New research has revealed the fascinating adaptation of some Australian sea snakes that helps protect their vulnerable paddle-shaped tails from predators.
1d ago phys.org
Personal and social factors impact return to work after ill-health
Support from managers and colleagues, as well as a positive attitude, are most likely to enable a more long-term return to work for employees after a sickness absence, according to a new review of research led by the University of East Anglia (UEA).
1d ago phys.org
New molecular blueprint advances our understanding of photosynthesis
Researchers at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have used one of the most advanced microscopes in the world to reveal the structure of a large protein complex crucial to photosynthesis, the process by which plants convert sunlight into cellular energy.
1d ago phys.org
Researcher designs data visualization of carbon footprints
A Columbia researcher affiliated with the Data Science Institute has created a data-visualization tool that shows the carbon footprints of hundreds of consumer products. The tool makes it easy for everyone to explore the products' carbon-emission levels and the various strategies that companies are employing to reduce emissions.
1d ago phys.org
Elephant Weight Cycles with New Teeth
Elephants have six sets of teeth over their lives, sometimes two sets at once. At those times, they can extract more nutrition from food and put on weight. -- Read more on ScientificAmerican.com
1d ago flex.acast.com
Interval training may shed more pounds than continuous moderate intensity workout
Interval training may shed more pounds than a continuous moderate intensity workout, suggests a pooled analysis of the available evidence.
1d ago sciencedaily.com
Immersive virtual reality therapy shows lasting effect in treatment of phobias in children with autism
New research shows that an immersive virtual reality environment treats 45 percent of children with autism, freeing them from their fears and phobias -- and that the treatment lasts.
1d ago sciencedaily.com
Brain connections that disadvantage night owls revealed
'Night owls' -- those who go to bed and get up later -- have fundamental differences in their brain function compared to 'morning larks,' which mean they could be disadvantaged by the constraints of a normal working day.
1d ago sciencedaily.com