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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

Medical Xpress / Meditation changes brain activity quickly with a noticeable peak at 7 minutes, research reveals

Meditation is widely recognized for its extensive range of mental and physical health benefits, from reducing stress and anxiety to boosting cognitive and emotional health. What was considered a fringe activity is now a mainstream ...

Apr 9, 2026
Phys.org / The lengths male octopuses go to protect the arm they need to mate

For mating male octopuses, one limb is more important than all others. That is the third right arm or hectocotylus, which is used to transfer sperm to the female because the penis cannot do it directly. Losing the limb can ...

Apr 8, 2026
Phys.org / AI uncovers hidden immune defenses inside bacteria

Researchers at the Massachusetts Institute of Technology (MIT) have discovered thousands of new proteins that protect bacteria from virus attacks using an AI system called DefensePredictor. What would usually take months ...

Apr 8, 2026
Medical Xpress / Virus from seafood is linked to a persistent eye disease in humans

A virus that typically infects marine animals, such as shrimp and fish, has jumped to humans and is causing chronic eye disease in some people, according to a study published in the journal Nature Microbiology. In recent ...

Apr 7, 2026
Tech Xplore / New AI video tool removes objects without breaking the laws of physics

When movie and TV directors want to tinker with their footage in post-production, they have an array of tools at their disposal to perfect a scene if it wasn't shot exactly how they liked. That includes removing objects like ...

Apr 7, 2026
Phys.org / How the female baboon body has the final say in sperm selection

Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring. According to a new study published in PLOS Biology, mate selection continues long after copulation as ...

Apr 6, 2026
Phys.org / A new equation may help baristas produce the perfect espresso shot every time

Everyone's idea of the perfect cup of coffee is different. Whether you have yours black, with a splash of milk or extra sweet, you like it your way. But is there a universal law that governs how that flavor gets into your ...

Apr 6, 2026
Phys.org / SimCells successfully target and kill drug-resistant bacteria

We are continually in an evolutionary arms race with bacteria. As we develop new antibiotics, they develop resistance, and so it goes on until some of our treatments no longer work. Superbugs and antimicrobial resistance ...

Mar 31, 2026
Medical Xpress / Premature and small births are linked to lifelong learning problems

Being born early or at a lower weight is linked to lower IQ scores and poorer educational outcomes in school and beyond, according to a new study published in the journal JAMA Pediatrics. Researchers from the UK and the Netherlands ...

Mar 31, 2026
Phys.org / AI writes a research paper that passes peer review

To date, the main role of AI in scientific research has been to assist with narrow tasks such as discovering chemical structures, analyzing data or predicting protein shapes. But now, the technology has broken new ground ...

Mar 30, 2026
Phys.org / What's inside a masterpiece? Laser scans and AI map paint layers molecule by molecule

Paintings are far more than dabs of oil on canvas. They are complex works of art composed of multiple layers, from primer and glues to the pigments and protective varnishes applied by the artists. Being able to see into these ...

Mar 30, 2026
Medical Xpress / First functional brain atlas shows how communication networks change from infancy to old age

If you want to know more about how the human brain matures and changes over time, you can now consult the first comprehensive atlas that maps brain organization from infancy all the way through to advanced old age. To create ...

Mar 29, 2026
Phys.org / Ancient Neanderthal genome reveals isolated, distinct populations

Neanderthals split into distinct regional groups that developed genetic differences far sooner than modern human populations typically did, according to a study published in Proceedings of the National Academy of Sciences. ...

Mar 29, 2026
Tech Xplore / AI benchmark helps robots plan and complete their chores in the real world

No matter how sophisticated they are, robots can often be indecisive and struggle with multi-step chores in the real world. For example, if you tell a robot to tidy a messy room, it might understand the goal but not know ...

Mar 29, 2026
Phys.org / How lifetime stress drives abnormal behaviors in lab monkeys

It is not unusual for laboratory monkeys to engage in abnormal repetitive behaviors (ARBs), such as pacing and hair-plucking. Conventional thinking is that these actions are linked to recent stresses or current housing conditions. ...

Mar 27, 2026