Untangling magnetism

Spin-wave spectrum of CoFe₂O₄ measured on the MAPS spectrometer (left) and the corresponding spin-wave calculation (right). The large ~60 meV splitting between the two magnon branches originates from the strong imbalance of molecular fields on the A and B cation sites, as illustrated in the inset crystal structure.
Image Credit: KyotoU / Yusuke Nambu

Magnetostriction and spin dynamics are fundamental properties of magnetic materials.  Despite having been studied for decades, finding a decisive link between the two in bulk single crystals had remained elusive. That is until a research team from several institutions, including Kyoto University, sought to examine these properties in the compound CoFe2O4, a spinel oxide (chemical formula AB2O4) widely used in numerous medical and industrial applications.

Spin dynamics describe how the tiny magnetic moments of atoms in a magnetic material interact and change orientation with time, while magnetostriction describes how a material changes shape or dimensions in response to a change in magnetization. These properties are central to the operation of sensors and actuators that employ magnetoelastic materials that change their magnetization under mechanical stress.

Scientists use algae to convert food waste into sustainable ingredients

C-phycocyanin
Photo Credit: King Abdullah University of Science and Technology

Researchers at King Abdullah University of Science and Technology (KAUST) have discovered something new about a very old organism and used it to transform waste from a chocolate factory into C-phycocyanin, a valuable blue pigment that is estimated to have a global market value of over US$275 million by 2030.  

The study, published in Trends in Biotechnology, outlines how Galdieria yellowstonensis, an ancient strain of red algae, can eat the sugars found in chocolate-processing waste to grow into a protein-rich biomass containing C-phycocyanin, which is used in food, cosmetics, and pharmaceutical products. Adding to the findings was the unexpected discovery that high levels of carbon dioxide promote Galdieria growth. Normally, carbon dioxide is a waste produced by microbes eating sugar. 

Smart sensor tag protects sensitive goods

Inconspicuous: The biodegradable tag is as thin as a sheet of paper, but still able to measure the temperature and relative humidity.
Photo Credit: Empa

Researchers from Empa, EPFL and CSEM have developed a green smart sensing tag that measures temperature and humidity in real time – and can also detect whether a temperature threshold has been exceeded. In the future, this could be used to monitor sensitive shipments such as medicines or food. The sensor tag itself is completely biodegradable. 

Vast flows of goods circle the globe every day. They include particularly delicate shipments, such as certain vaccines, medicines and food products. To ensure that these products arrive safely at their destination, they must remain within a certain temperature and humidity range throughout the entire supply chain. But how do we ensure this? It is costly and unsustainable to equip every single shipment with silicon-based sensors and chips. And measurements at nodes in the supply chain tell you nothing about what has already happened to the delicate goods on their way thus far. 

Congenital muscle weakness: Muscles fail to regenerate

After a muscle injury, muscle stem cells (green) secrete laminin-α2 (magenta) into their surroundings to support their proliferation.
Image Credit: Timothy McGowan, Biozentrum, University of Basel

For more than two decades, researchers at the University of Basel have been investigating a severe form of muscular dystrophy in which muscles progressively degenerate. The research team has now discovered that the muscles’ ability to regenerate is also impaired. Future therapies should therefore aim not only to strengthen muscles but also to promote their regeneration. 

Roughly eight in every million children are born with a particularly severe form of muscle weakness known as LAMA2-related muscular dystrophy. In Switzerland, 18 cases are currently known. This rare hereditary disease is still incurable. The muscles of affected children gradually become weaker, including the respiratory musculature. In many cases, children do not reach adulthood. 

Helium leak on the exoplanet WASP-107b

Artist's view of WASP-107b. The planet’s low density and the intense irradiation from its star allow helium to escape the planet and form an asymmetric extended and diffuse envelope around it.
Image Credit: © University of Geneva/NCCR PlanetS/Thibaut Roger

An international team including UNIGE observed with the JWST huge clouds of helium escaping from the exoplanet Wasp-107b. 

An international team, including astronomers from the University of Geneva (UNIGE) and the National Centre of Competence in Research PlanetS, has observed giant clouds of helium escaping from the exoplanet WASP-107b. Obtained with the James Webb Space Telescope, these observations were modeled using tools developed at UNIGE. Their analysis, published in the journal Nature Astronomy, provides valuable clues for understanding this atmospheric escape phenomenon, which influences the evolution of exoplanets and shapes some of their characteristics. 

Sometimes a planet’s atmosphere escapes into space. This is the case for Earth, which irreversibly loses a little over 3 kg of matter (mainly hydrogen) every second. This process, called ‘‘atmospheric escape’’, is of particular interest to astronomers for the study of exoplanets located very close to their star, which, heated to extreme temperatures, are precisely subject to this phenomenon. It plays a major role in their evolution. 

The shape of the cell nucleus influences the success of cancer treatment

Photo Credit: Thor Balkhed

Cancer cells with a cell nucleus that is easily deformed are more sensitive to drugs that damage DNA. These are the findings of a new study by researchers at Linköping University. The results may also explain why combining certain cancer drugs can produce the opposite of the intended effect. The study has been published in the journal Nature Communications. 

A few years ago, a new type of drug was introduced that exploits deficiencies in cancer cells’ ability to repair damage to their DNA. These drugs, called PARP1 inhibitors, are used against cancers that have mutations in genes involved in DNA repair, such as the breast cancer gene 1 (BRCA1). This gene has such a central role in the cell’s ability to repair serious DNA damage that mutations in it greatly increase the risk of developing cancer, often at a young age. The risk is so high that some women with a mutated BRCA1 gene choose to have their breasts and ovaries surgically removed to prevent cancer. 

Probiotics and Prebiotics Offer Safer Alternatives to Antibiotics in Animal Agriculture

Livestock producers face multiple challenges when adopting probiotics and prebiotics, from selecting effective microbial strains to ensuring product safety, viability, and cost efficiency.
Photo Credit: Joachim Süß

Probiotics, prebiotics, and synbiotics enhance livestock gut health, immunity, and growth while reducing dependence on antibiotics 

A new study by researchers at Shinshu University highlights the essential role of gut microbiota in livestock health and productivity. The researchers show how probiotics, prebiotics, and synbiotics can safely enhance growth and immunity, and balance the growth of intestinal microbes, offering practical alternatives to antibiotics. As global restrictions on antibiotic use intensify, the findings support sustainable livestock management and contribute to reducing antimicrobial resistance risks. 

FastStone Capture

Image Credit: Scientific Frontline

In the modern digital ecosystem, precise visual communication is often more valuable than text. Whether for technical documentation, customer support, or creative design, the ability to instantly capture, annotate, and share what is on your screen is a daily necessity. However, users frequently face a frustrating dichotomy: built-in operating system tools are often too rudimentary, while full-featured suites can be bloated, expensive, and resource-heavy.

FastStone Capture positions itself as the optimal middle ground—a lightweight yet feature-rich utility designed to handle everything from simple screenshots to complex screen recordings. This review examines the technology, features, and overall value of FastStone Capture to determine if it truly delivers professional-grade functionality in such a compact package.

Material Science: In-Depth Description

Image Credit: Scientific Frontline / stock image

Materials Science is the interdisciplinary field dedicated to understanding and manipulating the relationship between the atomic or molecular structure of a material, its macroscopic properties, and how it is processed.

At its core, this discipline seeks to uncover why materials behave the way they do and how to engineer new materials with specific, tailored characteristics to solve complex technological challenges. It bridges the gap between the fundamental theory of physics and chemistry and the practical applications of engineering.

What Is: An Ecosystem

The Holocoenotic Nature of the Biosphere
Image Credit: Scientific Frontline / stock image

The Genesis of a Paradigm 

The concept of the ecosystem represents one of the most significant intellectual leaps in the history of biological science. It is not merely a label for a collection of living things, but a sophisticated framework that integrates the chaotic multiplicity of the natural world into a coherent, functional unit. To understand the ecosystem is to understand the fundamental architecture of life on Earth. This report provides an exhaustive analysis of the ecosystem concept, tracing its historical lineage, dissecting its thermodynamic and biogeochemical engines, exploring its diverse manifestations across the globe, and evaluating its resilience in the face of unprecedented anthropogenic pressure. 

When Quantum Gases Refuse to Follow the Rules

The team  Frederik Møller, Philipp Schüttelkopf and Jörg Schmiedmayer
Photo Credit: © Technische Universität Wien

At TU Wien, researchers have created a one-dimensional “quantum wire” made from a gas of ultracold atoms, where mass and energy flow without friction or loss. 

In physical systems, transport takes many forms, such as electric current through a wire, heat through metal, or even water through a pipe. Each of these flows can be described by how easily the underlying quantity—charge, energy, or mass—moves through a material. Normally, collisions and friction lead to resistance causing these flows to slow down or fade away. But in a new experiment at TU Wien, scientists have observed a system where that doesn’t happen at all. 

By confining thousands of rubidium atoms to move along a single line using magnetic and optical fields, they created an ultracold quantum gas in which energy and mass move with perfect efficiency. The results, now published in the journal Science, show that even after countless collisions, the flow remains stable and undiminished, thus revealing a kind of transport that defies the rules of ordinary matter. 

Later than expected: domestic cats arrived in Europe only 2000 years ago

Cat in the old town of Şanlıurfa (southeastern Anatolia, Turkey).
Photo Credit: © Nadja Pöllath, SNSB

Cats are among the most successful domestic mammals; they are widespread throughout the world, even in the most remote areas around the globe. Their estimated number is around one billion. Earlier studies have shown that the domestic cat Felis catus descended from the North African wildcat Felis lybica lybica. 

Archaeological remains also prove that cats joined humans almost 10,000 years ago, but the complex evolution of their domestication, particularly the geographical region, the timing and the circumstances of their spread, remain largely unclear to this day. This is partly due to the scarcity of feline remains in archaeological contexts and the difficulty of attributing skeletal fragments to wild or domesticated forms. 

Stars defy the black hole: research in Cologne shows stable orbits around Sagittarius A*

Image Credit: NASA

New observations made with the ERIS instrument at the Very Large Telescope facility disprove from the assumption that the supermassive black hole at the center of the Milky Way devours nearby dust objects. 

An international research team led by PD Dr Florian Peißker at the University of Cologne has used the new observation instrument ERIS (Enhanced Resolution Imager and Spectrograph) at the Very Large Telescope (VLT) facility in Chile to show that several so-called ‘dusty objects’ follow stable orbits around the supermassive black hole Sagittarius A* at the center of our galaxy. Earlier studies had surmised that some of these objects could be swallowed up by the black hole. New data refutes this assumption. The findings have been published under the title ‘ABCD’ in the journal Astronomy & Astrophysics. 

The study focused on four of these unusual celestial bodies, which have been the subject of much discussion in recent years. In particular, G2 was long regarded as a pure dust and gas cloud. It was thought to have been initially elongated by the gravitational pull of Sagittarius A*, a process known as 'spaghettification', before being destroyed. However, the specific observations made with ERIS, which captures radiation in the near-infrared range, show that G2 follows a stable orbit. This is an indication that there is a star inside the dust cloud. These results confirm that the center of the Milky Way is not only destructive but can also be surprisingly stable. 

Researchers identify key molecular mechanism in cell communication

Albert Lu (left) and Carles Enrich (right).
Photo Credit: Courtesy of University of Barcelona

A new study describes a key molecular mechanism that explains how cells exchange information through extracellular vesicles (EVs), small particles with great therapeutic potential. The results, published in the Journal of Extracellular Vesicles, reveal that the Commander protein complex, previously known for its role in membrane recycling, also coordinates the entry and internal destination of vesicles within the cell. This finding sheds light on the process of intercellular communication, which is fundamental to the development of new therapies and diagnostic tools.

The study was led by Professor Albert Lu, from the Faculty of Medicine and Health Sciences of the UB and the CELLEX Biomedical Research Centre (IDIBAPS-UB), and María Yáñez-Mó, from the Severo Ochoa Centre for Molecular Biology (CSIC-UAM). Carles Enrich, professor at the same faculty (IDIBAPS-UB), also participated. 

According to Albert Lu, “understanding how receptor cells capture and process extracellular vesicles is essential to understanding how our body communicates at the molecular level.” “Furthermore — he continues — this knowledge is key to harnessing the therapeutic and diagnostic potential of these vesicles, since their effectiveness depends on being able to direct them and have them captured by the appropriate target cells.” 

Marine Biology: In-Depth Description

Photo Credit: Neeraj Pramanik

Marine Biology is the scientific study of organisms in the ocean and other brackish bodies of water. This discipline encompasses a vast spectrum of life forms, ranging from microscopic picoplankton to the blue whale, the largest animal on Earth. It is an integrative field that combines elements of geology, chemistry, physical oceanography, and biology to understand the physiology, behavior, and ecological roles of marine organisms, as well as their complex interactions with the high-salinity environment.