125 articles from FRIDAY 9.9.2022

Light-sensitive molecule helps marine animals synchronize their reproductive cycle

How animals are able to interpret natural light sources to adjust their physiology and behavior is poorly understood. The labs of Kristin Tessmar-Raible (Max Perutz Labs Vienna, Alfred Wegener Institut, University of Oldenburg) and Eva Wolf (Johannes Gutenberg University and Institute of Molecular Biology Mainz) have now revealed that a molecule called L-cryptochrome (L-Cry) has the biochemical...

A quantum network of entangled atomic clocks

For the first time, scientists at the University of Oxford have been able to demonstrate a network of two entangled optical atomic clocks and show how the entanglement between the remote clocks can be used to improve their measurement precision, according to research published this week by Nature.

Is climate change disrupting maritime boundaries?

Coral reef islands and their reefs—found across in the Indo-Pacific—naturally grow and shrink due to complex biological and physical processes that have yet to be fully understood. Now, climate change is disrupting them further, leading to new uncertainties for legal maritime zones and small island states.

Spectroscopy used to look for life on Mars by rovers capable of probing deeper sediments

An international team of researchers has found evidence indicating that despite the hostile environmental conditions on Mars, the equipment used by rovers on its surface should be capable of detecting evidence of life if it ever existed there. In their paper published in the journal Science Advances, the group describes how they subjected sample materials to Mars-like conditions and then tested...

Why do we mourn people we don't know?

The death of Queen Elizabeth II has prompted public displays of grief around the world—from public gatherings at Buckingham Palace in London, and condolences from world leaders, to individuals reflecting on social media about what she meant to them.

Not just a backup—the dual specificity of UBA6

Researchers at the Rudolf Virchow Center of the University of Würzburg have unveiled the crystal structures of UBA6 in complex with either ATP or the ubiquitin-like protein FAT10. These results provide the foundation to study the individual roles of UBA6 towards the attachment of either ubiquitin or FAT10 to target proteins and the downstream cellular pathways with possible implications for the...

Risk factors for heart disease and stroke largely similar in men and women globally

Women and men share most of the same risk factors for cardiovascular disease (CVD), a large international study has found -- the first such study to include people not only from high income countries, but also from low- and middle-income countries where the burden of CVD is the greatest. The global study assessed risk factors, including metabolic (such as high blood pressure, obesity and...

Astronomy: Is over-eating to blame for bulges in Milky Way bar?

A new simulation conducted on the world's most powerful supercomputer dedicated to astronomy has produced a testable scenario to explain the appearance of the bar of the Milky Way. Comparing this scenario to data from current and future space telescopes will help clarify the evolution of our home Galaxy.

A little strain goes a long way in reducing fuel cell performance

Researchers report that strain caused by just a 2% reduction in the distance between atoms when deposited on a surface leads to a whopping 99.999% decrease in the speed at which the materials conduct hydrogen ions, greatly reducing the performance of solid oxide fuel cells. Developing methods to reduce this strain will help bring high-performance fuel cells for clean energy production to a wider...

Sex-determination mechanisms in birds

Scientists have known that sex-determination in vertebrates happens in the germ cells, a body's reproductive cells, and the somatic cells, the cells that are not reproductive cells. Yet they have not fully understood the mechanisms by which it happens. To better grasp the process of the germ cell's sex determination, a research team has analyzed germ cells in chickens using RNA-sequencing to...

Unique ferroelectric microstructure revealed for first time

A team of researchers have observed and reported for the first time the unique microstructure of a novel ferroelectric material, enabling the development of lead-free piezoelectric materials for electronics, sensors, and energy storage that are safer for human use. This work was led by the Alem Group at Penn State and in collaboration with research teams at Rutgers University and the University of...

Lattice distortion of perovskite quantum dots induces coherent quantum beating

A research group led by Prof. Wu Kaifeng from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS), in collaboration with Dr. Peter C. Sercel from the Center for Hybrid Organic Inorganic Semiconductors for Energy, recently reported the utilization of lattice distortion in lead halide perovskite quantum dots (QDs) to control their exciton fine structure.

A plastic film that can kill viruses using room lights

Researchers at Queen's University Belfast have developed a plastic film that can kill viruses that land on its surface with room light. The self-sterilizing film is the first of its kind—it is low cost to produce, can be readily scaled and could be used for disposable aprons, tablecloths, and curtains in hospitals. It is coated with a thin layer of particles that absorb UV light and produce...

A warm intrusion in the Arctic causes extreme pollution levels

During the MOSAiC research expedition, conducted in the Arctic pack ice between 2019 and 2020, EPFL scientists observed an atmospheric perturbation triggered by the intrusion of a highly polluted warm air-mass. A first study providing further insight into the phenomenon and its potential implications has just been published.