Egg yolk may appear runny and uniform, but on the nanoscale, it is one of the most crowded biological fluids in nature. Packed with proteins and fats, it serves as a dense storage reservoir for a developing embryo. Yet the tiny particles responsible for transporting these nutrients—low-density lipoproteins (LDLs)—must remain mobile enough to reach their destinations. How they navigate this complex "nanoscale traffic jam" has long puzzled scientists.

A technology has been developed that uses robots rather than humans to evaluate the performance of newly developed catalysts. By operating 45 times faster than manual work while also improving precision, it is expected to significantly shorten catalyst development timelines. A research team led by Dr. Ji Chan Park of the Clean Fuel Research Laboratory at the Korea Institute of Energy Research has developed a system that fully automates complex and repetitive catalyst performance evaluation experiments.

Extracellular vesicles (EVs) are tiny biological bubbles that carry nucleic acids and proteins between cells, playing an essential role in tissue repair, neuroprotection and immune health. By isolating the surface proteins of these bubbles, researchers can understand more about their biology and build tools to transform extracellular vesicles into next-generation drugs for cancer, neurological conditions and other diseases.

At Rice University, a research lab's signature keepsake has helped perfect a method for growing patterned diamond surfaces that could help decrease operating temperatures in electronics by 23 degrees Celsius. The paper is published in the journal Applied Physics Letters.

New observations of Ganymede reveal a striking similarity between the auroras on the largest moon in the solar system and those on Earth. The international team of astrophysicists, led by researchers from the University of Liège, has produced new results indicating that, despite different conditions, the fundamental physical processes that generate auroras are common to different celestial bodies, and not just planets.

Researchers at the Indian Institute of Technology Gandhinagar (IITGN), in collaboration with international partners, have shown that ocean temperature patterns help limit the global spread of droughts. Published in Communications Earth & Environment, the study analyzed climate data from 1901–2020 and found that synchronized droughts affected between 1.8% and 6.5% of global land, far lower than earlier claims that one-sixth of the planet could dry out at once.

An archaeological study reveals how ancient hunter-gatherer groups lived—and survived—more than a thousand years ago in the transition zone between the Pampas and Patagonia in Argentina. The research, carried out by Martínez and colleagues, focuses on the Zoko Andi 1 site (ZA1), located on the lower basin of the Colorado River, a key location for understanding the daily life of these early settlers in the south. The work is published in the journal Latin American Antiquity.

Natural muscle fibers are made up of spring-like proteins that can contract and stretch without losing their original form, dissipate mechanical energy as heat and maintain incredible tensile strength for all sorts of physical functions. Engineers at Washington University in St. Louis have replicated these proteins using synthetic biology approaches to create a new category of biomaterials for use in medicine, textiles and agriculture.

Scientists have observed a new microscopic mechanism enabling precise control of the magneto-optical properties of excitons in alloys of two-dimensional semiconductors. This discovery opens up tangible prospects for technological applications in devices exploiting valleytronics. The research findings were published in the journal Physical Review Letters.

What makes one bat take risks and venture far from its roost in search of food, while another stays close to familiar, safer areas? A new study from Tel Aviv University's School of Zoology reveals that the environment in which a bat is raised during the first months of its life largely determines how it will behave in the wild, sometimes even more than its innate personality.