Articles by Paul Arnold
Phys.org / The way you walk can reveal your true feelings
Whether you're striding with purpose, swaggering with confidence, or trudging slowly along the street, the way you walk can reveal how you're feeling, according to new research published in the journal Royal Society Open ...
Phys.org / The fish species that knows when you are watching them
Emperor cichlids, large fish native to Lake Tanganyika in Africa, don't like being stared at, especially if someone's gaze is directed at their offspring. Those are the findings of a new study published in the journal Royal ...
Phys.org / New DNA evidence reveals the complex origin of Palau's first settlers
A new genetic study published in the journal Cell is filling in some important details about the earliest inhabitants of Palau, an island nation in the western Pacific Ocean consisting of approximately 340 islands.
Phys.org / Earth's toughest microbes could help save the planet and find life on other worlds
Extremophiles may well be tiny, but they are making a huge contribution to the health of our planet and our lives. A new review of these microorganisms, published in the journal Frontiers in Microbiology, explains how they ...
Medical Xpress / A new digital imagery program can help students reduce anxiety levels
With exams looming and a lot potentially riding on their future, many university students suffer from anxiety. This pressure can often create a cycle of worry that is difficult to break without the right tools. A new study ...
Phys.org / Turning mosquitoes into flying vaccine carriers to protect against bat-borne viruses
Bats are reservoirs for several zoonotic viruses, such as Ebola and coronaviruses. These pathogens can spread to humans through direct contact with the flying mammals or their bodily fluids, or indirectly through contaminated ...
Tech Xplore / New chip lets robots see in 4D by tracking distance and speed simultaneously
Current vision systems for robots and drones rely on 3D sensors that, although powerful, do not always keep up with the fast-paced, unpredictable movement of the real world. These systems often struggle to measure speed instantly ...
Phys.org / Huge dinosaur bone may reveal the origins of T. rex
Tyrannosaurus rex is one of the most recognizable names of the dinosaur world, a hulking and terrifying meat-eating behemoth. While fossil remains have been extensively studied, not much is known about its family history ...
Tech Xplore / How an acid found in grapes could help recycle battery metals
Cobalt and nickel are vital components for batteries, superalloys and catalysts, used in technologies ranging from smartphones to jet engines. But when it comes to recycling, they are notoriously difficult to separate because ...
Phys.org / Palm-sized superconducting magnet achieves 42 tesla, rivaling the world's biggest
When we think of powerful magnets used in particle accelerators or for NMR (nuclear magnetic resonance), we often envision bulky machines, sometimes the size of buildings. But in an extraordinary breakthrough for physics, ...
Phys.org / Dolphin mass strandings in Patagonia linked to killer whales
In 2021 and 2023, hundreds of dolphins were stranded in shallow waters in San Antonio Bay in northern Patagonia. Some died, but many were returned safely to the sea. But what remained a mystery until now was how they ended ...
Phys.org / Queen bees survive winter flooding by breathing underwater
Hibernation is a risky endeavor for many animals, as they can be taken away by the elements or predators. For several months of the year, queen bumblebees enter a dormant state underground called diapause. While this keeps ...
Phys.org / Japanese scientists discover how falling cats almost always make perfect landings
When cats fall, they usually land on their feet. This uncanny ability to right themselves before hitting the ground has long puzzled scientists. Now, a team from Yamaguchi University in Japan has the answer, and it's all ...
Phys.org / Glacial lakes in Alaska are expanding rapidly and could quadruple in size
Alaska's glacial lakes are growing faster than in previous decades. They expanded by more than 150 square kilometers between 2018 and 2024, and could eventually grow to more than four times their current size as glaciers ...
Phys.org / How a shift in the Gulf Stream could signal the collapse of a major ocean current system
Changes in the Gulf Stream, a strong ocean current in the Atlantic, could serve as an early warning of the imminent collapse of the Atlantic Meridional Overturning Circulation (AMOC). The AMOC is a massive system of ocean ...