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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 / Alkaline-loving microbes could help safeguard nuclear waste buried deep underground for thousands of years

Billions of alkaline-loving microbes could offer a new way to protect nuclear waste buried deep underground. This approach overcomes the limitations of current cement barriers, which can crack or break down over time.

Dec 5, 2025
Medical Xpress / Gut bacteria's hidden toxin acts as DNA glue, fueling colorectal cancer risk

Colibactin is a powerful toxin produced by Escherichia coli and other bacteria living in the human gut. This highly unstable bacterial product causes mutations in DNA that have been linked to colorectal cancer. Because it ...

Dec 5, 2025
Tech Xplore / Scientists develop a glasses-free 3D system with a little help from AI

Watching 3D movies and TV shows is a fun and exciting experience, where images leap out of the screen. To get this effect, you usually have to wear a special pair of glasses. But that could soon be a thing of the past as ...

Dec 4, 2025
Phys.org / Glaciers speed up and slow down at predictable times according to the first global map of ice movement

The speed at which glaciers move changes predictably each year, according to the first-ever global map of how glacier and ice sheet speeds vary with the seasons. Knowing this yearly rhythm could help us better predict sea-level ...

Dec 4, 2025
Phys.org / Smart material instantly changes colors on demand for use in textiles and consumer products

Scientists have developed a revolutionary technique for creating colors that can change on command. These are structural colors that don't rely on dyes or pigments and can be used for display signage, adaptive camouflage ...

Dec 3, 2025
Phys.org / Interstellar object covered in 'icy volcanoes' could rewrite our understanding of how comets formed

Analysis of the second confirmed interstellar comet to visit our solar system suggests that the alien body could be covered in erupting icy, volcano-like structures called cryovolcanoes. Researchers also discovered that the ...

Dec 3, 2025
Phys.org / Ancient stalagmite provides insights into how climate affected early communities in cradle of civilization

The Fertile Crescent, a boomerang-shaped region spanning modern-day Middle Eastern countries, is considered the cradle of civilization and where farming first emerged. But little is known about how climate change influenced ...

Dec 2, 2025
Phys.org / Cats adjust their communication strategy by meowing more when greeting men

As many cat owners will testify, their pets are often mysterious creatures, independent, cunning and sometimes aloof. And now it appears that when it comes to communication, they might be playing favorites. A new study published ...

Dec 2, 2025
Phys.org / New digital state of matter could help build stable quantum computers

Scientists have taken another major step toward creating stable quantum computers. Using a specialized quantum computer chip (an essential component of a quantum computer) as a kind of tiny laboratory, a team led by Pan Jianwei ...

Dec 1, 2025
Phys.org / Monkeys have rhythm and can tap along to the beat (with a little help from the Backstreet Boys)

They may not yet be kings of the swingers, but macaque monkeys can keep time to music and move to the beat. Well, at least two adult macaques can, who were trained by researchers to tap along to different kinds of music. ...

Dec 1, 2025
Phys.org / Asteroid loaded with amino acids offers new clues about the origin of life on Earth

One of the most elegant theories about the origins of life on our planet is that it was kick-started by a delivery from outer space. This idea suggests that prebiotic molecules—the building blocks of life—were transported ...

Nov 29, 2025
Phys.org / New universal law predicts how most objects shatter, from dropped bottles to exploding bubbles

When a plate drops or a glass smashes, you're annoyed by the mess and the cost of replacing them. But for some physicists, the broken pieces are a source of fascination: Why does everything break into such a huge variety ...

Nov 28, 2025
Medical Xpress / Prototype device restores lost smell by teaching the brain to feel odors

There is new hope for people who have lost their smell. Scientists have successfully tested a breakthrough device that lets people detect the presence of certain odors. This innovative system helps them "smell" again by translating ...

Nov 28, 2025
Phys.org / Dating a North American rock art tradition that lasted 175 generations

The Pecos River murals are a stunning collection of monumental, multicolored rock paintings in limestone rock shelters across southwest Texas and northern Mexico. They depict human-like figures that reach up to eight meters ...

Nov 28, 2025
Phys.org / Modern life explains why people in Chile are taller and have larger heads than their ancestors

Modern Chileans are significantly taller and have larger heads than their ancestors. That's the central finding of new research looking at how intracranial volume (ICV) has changed across thousands of years in northern Chile. ...

Nov 26, 2025