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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

Tech Xplore / It only takes one fake web page to fool AI shopping bots, study finds

AI shopping assistants are popping up all over the internet, changing how we browse, compare and discover products. However, these helpful tools appear to have a serious security flaw. According to a paper published on the ...

9 hours ago
Phys.org / Thirsty desert lizards inspire a new water-harvesting system

When the desert horned lizard (Phrynosoma platyrhinos) is thirsty, it cannot just lap up water or scoop it up like a bird because it lives in environments where water is extremely scarce. Typically, it's found in damp soil ...

12 hours ago
Medical Xpress / Uneven cerebellum aging may partly explain why some older adults stay mentally sharp

Scientists may have discovered a new role for the cerebellum, the part of the brain that sits at the base of the skull. A new paper published in the journal Nature Neuroscience reports that different parts of the cerebellum ...

Jun 24, 2026
Phys.org / Why female guppies prefer rare males and how this might shape evolution

When it comes to choosing a partner, some species prefer males that stand out from the crowd. Evolutionary biologists call the resulting process negative frequency-dependent selection. It means that a male has a huge mating ...

Jun 24, 2026
Medical Xpress / Hope for spinal injuries as pigs walk again after experimental gel treatment for severed spinal cords

In humans and other mammals, spinal cord injuries can be devastating, leading to permanent loss of movement, sensation and bladder control. When severed axons (the long fibers that carry messages between nerve cells) cannot ...

Jun 23, 2026
Phys.org / White barn owls may use moonlight to startle prey

White barn owls are effective killing machines. They fly silently through the night air and swoop down on unsuspecting prey with their sharp talons. But they have something you would think goes against being a stealth predator: ...

Jun 23, 2026
Phys.org / How languages recycle parts of words to avoid confusion

Many languages recycle words, giving them different meanings. For example, in English, "run" can mean to move quickly but also to manage something, like "run a company." In Spanish, "lengua" is both the word for tongue and ...

Jun 22, 2026
Phys.org / How oxygen sneaks into a corked wine bottle long before the first pour

The main reason for sealing wine bottles with a cork is to protect the liquid from oxygen. However, it is not an impermeable barrier, and a small amount of air leaks in, which is not always entirely bad news. The gas helps ...

Jun 22, 2026
Tech Xplore / Sound waves could power a new kind of chip inspired by the human brain

Neuromorphic computing is a computing approach that mimics how the human brain works. Our gray matter is a marvel of nature, capable of handling huge volumes of data with incredible energy efficiency. While modern AI hardware ...

Jun 20, 2026
Tech Xplore / Shake-powered capsule tests and disinfects unsafe drinking water

It is a sobering fact that in the 21st century, 1 in 4 people still lack access to safe, clean drinking water, according to the World Health Organization (WHO). The figures increase slightly during natural disasters, when ...

Jun 20, 2026
Tech Xplore / Three-armed Sashimi-Bot learns to slice and serve fish like a pro

If you ever need help in the kitchen cutting fish into appetizing bites, a new three-armed robot may be able to help. And that's no easy feat for robots. While they are generally good at picking up rigid objects, something ...

Jun 19, 2026
Phys.org / Pigeons' eyes are almost perfectly still when they're flying, study finds

When pigeons are flying through the air, they lock their eyes in a near-fixed position instead of moving them around. Researchers from Harvard University discovered this after attaching a lightweight rig of cameras and mirrors ...

Jun 18, 2026
Phys.org / AI could be trapped in a 'Carbon Valley' unless action is taken soon

AI is growing fast, and keeping up means building more data centers, manufacturing advanced chips and powering the tech behind it. All of that comes with a carbon cost. AI advocates claim that in the long run, AI will save ...

Jun 17, 2026
Phys.org / Goats listen to human voices to find hidden food treats

Goats appear to have a rare ability not shared by many in the animal kingdom, and that is being able to follow the direction of a human voice to locate hidden objects. While dogs have been shown to do this, even our closest ...

Jun 17, 2026
Phys.org / Dolphins know how to avoid troublesome males by listening for their 'names'

When female bottlenose dolphins want to avoid males known for pushy mating behaviors, they listen out for their unique signature whistles. That's the suggestion of a study published in Proceedings of the National Academy ...

Jun 16, 2026