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Paul Arnold

Paul Arnold

Author

Paul is a versatile freelance writer with a BSc in Biology from the University of London. He worked at the BBC producing science and medical documentaries, traveling the world interviewing scientists in places like Antarctica and the Canadian High Arctic. He now freelances from sunny southern Spain.

Articles by Paul Arnold

Phys.org / Leading AI models struggle to solve original math problems

Mathematics, like many other scientific endeavors, is increasingly using artificial intelligence. Of course, math is the backbone of AI, but mathematicians are also turning to these tools for tasks like literature searches ...

Feb 9, 2026
Phys.org / The evolutionary trap that keeps rove beetles alive

Rove beetles have evolved a neat trick to survive. They cloak themselves in ant pheromones, allowing them to enter and remain undetected within ant colonies. But it comes with a catch. Once a rove beetle lineage evolves this ...

Feb 6, 2026
Medical Xpress / Nasal spray for flu prevention shows promising trial results

Researchers have developed a nasal spray for flu prevention that has shown promising results in preliminary human trials. Seasonal influenza (the flu) is an acute respiratory infection that affects up to one billion people ...

Feb 5, 2026
Phys.org / Scents of the afterlife: Identifying embalming recipes by 'sniffing' the air around Egyptian mummies

If you have ever stood close to an ancient Egyptian mummy, you may remember a distinctive, lingering odor. For a long time, it was assumed that this was simply due to age and decay. However, scientists have discovered that ...

Feb 5, 2026
Phys.org / Why snakes can go months between meals: A genetic explanation

Snakes may well be one of nature's greatest predators, capable of eating whole deer or even crocodiles, but just as impressive is that they can go months, or even a whole year, without a single meal. And now an international ...

Feb 4, 2026
Phys.org / Poop as medicine? A Roman vial's chemistry backs up ancient medical texts

When some ancient Romans were feeling a little under the weather, they were treated with human feces. While this practice was mentioned in ancient Greco-Roman medical texts by figures such as Pliny the Elder, there was no ...

Feb 4, 2026
Phys.org / How play and social connection may help some dogs understand words

Some dogs are seemingly more talented than others. So-called gifted word learners (GWL) are rare canines that can rapidly learn the names of toys, a skill that most dogs don't possess. To understand why this is so, researchers ...

Feb 3, 2026
Phys.org / Open-access software tool helps researchers spot fake journals

Research papers in peer-reviewed academic journals are at the heart of academic integrity. New ideas and discoveries are vetted and checked by experts in the field as the boundaries of scientific knowledge are pushed forward. ...

Feb 3, 2026
Phys.org / Ancient Alaskan site may help explain how the first people arrived in North America

New evidence has emerged that sheds light on the possible first people to populate the Americas. Dating of stone and ivory tools found at an archaeological site in Alaska suggests that these early pioneers traveled through ...

Feb 2, 2026
Medical Xpress / How sleep loss can damage your brain's wiring

Sleep loss damages the fatty insulation protecting the nerve cells in our brain, according to a paper published in the journal Proceedings of the National Academy of Sciences. The research also explains why we often feel ...

Feb 2, 2026
Phys.org / Tropical weather cycles linked to faster Arctic ice loss in autumn

When it comes to global warming and climate change, we often hear news stories about tipping points where Earth's systems shift into a new and dangerous state. One such may have been reached in the year 2000 that caused tropical ...

Feb 1, 2026
Phys.org / New 3D map of the sun's magnetic interior could improve predictions of disruptive solar flares

For the first time, scientists have used satellite data to create a 3D map of the sun's interior magnetic field, the fundamental driver of solar activity. The research, published in The Astrophysical Journal Letters, should ...

Jan 31, 2026
Tech Xplore / A smelly snapshot of the current state of electronic noses for robots

Robots are getting better at sniffing out smells thanks to improvements in electronic noses (e-noses). A comprehensive review of the state of robot olfaction, published in the journal npj Robotics, has surveyed recent advances ...

Jan 31, 2026
Medical Xpress / The brain's protein cleanup process may play a role in dementia

Microglia are the brain's immune cells that clean out debris, such as damaged proteins and old cell parts, to keep the organ healthy. But the very properties that make these cells so useful might also be a driving factor ...

Jan 29, 2026
Tech Xplore / A new flexible AI chip for smart wearables is thinner than a human hair

The promise of smart wearables is often talked up, and while there have been some impressive innovations, we are still not seeing their full potential. Among the things holding them back is that the chips that operate them ...

Jan 29, 2026