A study published in Nature Food by researchers from the Politecnico di Milano and the University of California at Berkeley provides forward-thinking answers to the debate on the role of environmental stresses on migration processes. The analysis, conducted on a dataset of 40,000 cases of environmental migration in Somalia and led by Professor Maria Cristina Rulli, coordinator of the Glob3ScienCE (Global Studies on Sustainable Security in a Changing Environment) Lab, shows that the main reasons for these displacements can be attributed to water scarcity. Drought, the insufficient water content of the soil with respect to the needs of agriculture, and food insecurity caused as a result, directly affect Somalia's agricultural and pastoral communities, which represent about 80% of the national population. [...]
A study published in the Chemical Engineering Journal proposes a new approach to environmental remediation of pharmaceutical pollutants in water flows. This approach is based on a phenomenon known as "sparks," which refers to the sparks that appear on the surface of a metal when it is subjected to plasma electrolytic oxidation (PEO). [...]
Even the most remote regions of the globe are not free from plastic pollution. In a study published in Marine Pollution Bulletin, researchers from São Paulo State University (UNESP) in Brazil have detected plastic rocks on Trindade Island, the easternmost point of South America. [...]
An international team of scientists led by the University of Bath has developed a new catalyst—a substance that speeds up chemical reactions—that uses sunlight to break down so-called "forever chemicals" prevalent in the environment and known to accumulate in the human body with unknown long-term health effects. [...]
Future devices will continue to probe the frontier of the very small, and at scales where functionality depends on mere atoms, even the tiniest flaw matters. Researchers at Rice University have shown that hard-to-spot defects in a widely used two-dimensional insulator can trap electrical charges and locally weaken the material, making it more likely to fail at lower voltages. The findings are published in Nano Letters. [...]
A recent study by the University of Bonn and University Hospital Bonn and the University of Freiburg shows that the mitochondria appear to be able to influence the number of lipid droplets in the cell using a mechanism that is actually intended for a completely different purpose. Their results have now been published in the journal Nature Cell Biology. [...]
Thanks to modern therapies, a cancer diagnosis is no longer an automatic death sentence. But many patients still suffer from unwanted side effects and limited efficacy. In a recent Bioconjugate Chemistry publication, William & Mary researchers have designed an antibody-drug conjugate (ADC) with the potential to improve the potency and decrease the cost of currently approved cancer drugs. [...]
The human genome is a rich, complex record of migration, encounters, and inheritance written over thousands of millennia. Genomic research by members of Sarah Tishkoff's lab at the University of Pennsylvania are revisiting a particularly intimate chapter, suggesting that ancient mating patterns between modern humans and Neanderthals shaped why Neanderthal DNA is largely missing from the human X chromosome. [...]
The world is never really at rest. Even in a vacuum near ultracold temperatures where all classical motion should come to a halt, you'll find quantum fluctuations. In thin, two-dimensional materials, these include random vibrations that can alter electromagnetic fields, a feature that theorists have posited could be quite useful for modifying materials. [...]
Researchers studying the soft-bodied Ediacaran biotas of the world generally accept that there are three distinct assemblages. The 575–560-million-year-old (Ma) Avalon Assemblage is best known from the Ediacaran of Newfoundland, Canada, characterized by the weird and wonderful fractal Rangeomorpha like Charnia that thrived in the deep, dark waters around the ancient continent of Avalonia. The 560–550-Ma White Sea Assemblage is best known from shallow marine rocks of Australia, Russia, and China, marking the acme of Ediacaran biodiversity and including some famous animal ancestors such as Dickinsonia and Kimberella. And the 550–538-Ma Nama Assemblage is a low-diversity biota that persisted until the extinction event preceding the Cambrian Radiation event at 538 Ma. [...]
Along with forests, grasslands and wetlands are also being converted to cropland and pasture at an increasing rate around the world—often for livestock farming and the export of agricultural products. An international team of researchers, including Martin Persson from Chalmers, has now analyzed for the first time where, for what purpose, and how quickly natural non-forest ecosystems are being converted into agricultural land on a global scale. The results show that these ecologically highly valuable areas are converted at a rate almost four times faster than forests. [...]
Some computers are easy to spot. Artificial, human-built computers like those found in smartphones and laptops are abstract dynamic systems with observable computational elements like input, output, energy cost, and logical processes. Other computers aren't so readily recognized. [...]
Wildlife trafficking is one of the world's most widespread illegal trades, contributing to biodiversity loss, organized crime, and public health risks. Once concentrated in physical markets, much of this activity has moved online. Today, animals and animal products are advertised on large e-commerce platforms alongside ordinary consumer goods. This shift makes enforcement harder—but it also creates a valuable source of data. [...]
Minor changes in moisture level can promote lipid molecules to reorganize themselves in biomaterial or biomembranes. This can affect how the skin, lungs and tear film protect us from dehydration. This new discovery from Lund University in Sweden could be the inspiration for smart materials and new drug delivery techniques. [...]
Some of the universe's most extreme explosions leave behind almost no trace. The original explosion is unseen, but our observations can capture the long-lived echo it leaves behind as the shock front plows into its surrounding environment. In new research accepted for publication in The Astrophysical Journal, we have discovered what may be the clearest example yet of one of these hidden explosions: the radio afterglow of a powerful gamma-ray burst whose initial blast went unnoticed. [...]
Some single-celled organisms are known to transition to multicellularity during their lifetimes, usually either by cloning themselves or when many similar cells come together to form a larger multicellular organism. A new study published in Nature suggests that a combination of the two routes may be more common than previously thought—even in organisms distantly related to animals. [...]
Scientists have developed a new way to help understand what happens in the body when people consume a plant product and the many chemicals it contains. The Journal of Natural Products published the method to quickly analyze the effects of a natural product, developed at Emory University. [...]
Should you ever find yourself playing a trivia game on the topic of moths and butterflies, here are a few facts that might help. Collectively called Lepidoptera, moths and butterflies account for nearly 10% of all animal species. [...]
Researchers from the University of Sydney and the Centenary Institute have discovered how a promising class of experimental antibiotics disrupts the bacterium that causes tuberculosis (TB), paving the way for urgently needed new treatments. [...]
Messenger RNA (mRNA) technology is transforming medicine by providing our cells with genetic instructions to produce proteins that help the immune system prevent or fight a wide range of diseases, including cancer and other rare disorders. Before the molecule can help fight disease, mRNA is packaged into lipid nanoparticles to protect it from rapid degradation. These fatty, protective bubbles act as a delivery vehicle, ensuring the mRNA properly enters the cell to deliver instructions for protein production. [...]
In the search for climate-friendly foods, scientists have spent decades reimagining what grows in the field. But a quieter question has lingered in the background: Will anyone actually want to eat it? A new study in the journal Agricultural Economics has applied this question to intermediate wheatgrass, finding that consumers will pay more for the perennial grain if the sustainability benefits are clearly explained—as long as it tastes good, too. [...]
RIKEN researchers have discovered how an enzyme modifies gene expression by targeting certain stretches of messenger RNA (mRNA) while leaving others alone. This finding could contribute to the rational design of drugs that tweak the enzyme's activity. The paper is published in the journal Nature Communications. [...]
Thanks to Fink, a software package created by two CNRS engineers, it is now possible to track millions of transient celestial phenomena observed in the sky by the Vera C. Rubin Observatory in Chile, in real time and with unprecedented precision. Minutes after each image is taken, Fink receives, processes, enriches, and cross-references the data with existing datasets. This allows even the faintest variations in detected light to be characterized with remarkable accuracy. The data is then stored, classified, and shared with users—scientists and astronomy enthusiasts—in a concise and targeted manner. [...]
The gilthead seabream, a species of commercial interest that migrates seasonally, does not form independent local populations in the northwestern Mediterranean but instead constitutes a single, functionally connected population on a large scale. Individuals spend the summer feeding in the coastal lagoons of the Gulf of Lion and, every autumn, undertake reproductive migrations of hundreds of kilometers to shared spawning grounds in the open sea, mainly in the Marseille region, but also in areas of the Catalan coast. They repeat this pattern year after year. [...]
Researchers have found a way to fabricate film-thin membranes imbued with super strength that could extend the durability of decarbonization technologies. Chemical engineers at The University of Queensland are harnessing an intricate building technique to produce the hyper-thin film membranes that boost the reliability, efficiency, and lifespan of key clean energy systems. The research is published in Nature Synthesis. [...]
In a world-first discovery, researchers have found an electrical shark deterrent used at Cocos (Keeling) Islands was effective at reducing the number of fish taken off fishing hooks by sharks—a process known as depredation. The study, led by The University of Western Australia's Dr. Jonathan Mitchell and published in Marine and Freshwater Research, is the first of its kind globally to document the results of testing a deterrent to reduce depredation. [...]
Tiny changes at the atomic scale can determine the future of clean energy. In a new study, Tohoku University researchers have revealed how the precise coordination environment surrounding a single cobalt atom dramatically influences its catalytic behavior in the oxygen reduction reaction (ORR)—a key process in fuel cells and sustainable hydrogen peroxide production. [...]
There's a common assumption that if someone starts learning a language when they are very young, they will quickly become fluent. Many people also assume that it will become much harder to learn a language if they start later in life. [...]
Sea level can temporarily change for a variety of reasons—atmospheric pressure shifts and water accumulation from wind and storms, for example—which can cause flooding in coastal communities and affect maritime industry operations. The key to mitigating the effects of short-term sea level variation is accurate prediction that provides ample warning time to affected areas. [...]
Anyone who has seen a hummingbird poking her beak deep into a trumpet creeper blossom, or a honeyeater using its brush-tipped tongue to extract nectar from eucalyptus flowers, has witnessed something that, from a human perspective, is rather remarkable. Although many bird species avoid sugar-rich foods, others survive almost entirely on sugar-rich nectar or fruit, processing massive sugar loads without developing the diseases that such diets cause in people and other animals. [...]