Articles by Paul Arnold
Phys.org / Rivers may be carrying more microplastics into the world's oceans than previously thought
Microplastics are a modern environmental menace and a potential threat to human health. These tiny pieces of plastic, measuring from 1 to 5,000 micrometers, come mainly from larger plastics as well as sources such as paints ...
Phys.org / The surprising history of woolly rhinos: They weren't always creatures of the frozen north
Woolly rhinoceroses (Coelodonta antiquitatis) were fascinating creatures: giant, lumbering Ice Age beasts with thick fur and massive horns that died out about 11,000 years ago. Previous genetic studies had left open the question ...
Phys.org / Scientists discover a strange new form of ice that could help explain the interiors of Neptune and Uranus
Scientists have discovered that there is ice deep inside planets like Neptune and Uranus and want to find out what form it takes and how it behaves. They cannot dig for it and transport it all the way back to Earth, so they ...
Medical Xpress / Drinking very hot tea and coffee is linked to a greater risk of esophageal cancer
That morning brew may be doing you more harm than good. A study of almost 1 million tea and coffee drinkers has linked very hot drinks to a threefold greater risk of developing one type of esophageal cancer.
Phys.org / Blue light breaks long-standing chemistry rule, unlocking 3D drug building blocks
For more than a century, pharmaceutical companies have relied on flat structures called aromatic rings, which can help drugs bind to target sites in the body. They include benzene rings and other flat, nitrogen-containing ...
Phys.org / How atmospheric events at the top of the world could have triggered two devastating California floods
In early 2017 and 2023, California experienced two catastrophic and record-breaking floods that caused billions of dollars in damage, triggered mudslides and forced thousands of people to evacuate. Why this happened left ...
Phys.org / The surprising place where giant dinosaurs incubated their eggs
Finding a fossilized dinosaur egg is exceptionally rare, but finding a stash of more than 250 shell fragments in the chilly southern reaches of the planet is even more surprising. The discoveries come from southernmost Patagonia ...
Phys.org / Ancient bones reveal that cannibalism took different forms in Neolithic Spain
Cannibalism was sometimes on the Neolithic menu, as numerous archaeological discoveries have revealed. But while ancient human bones show the practice took place, far less evidence exists about the forms it may have taken ...
Medical Xpress / Regular ketamine infusions offer new hope for treatment-resistant bipolar depression
People living with treatment-resistant bipolar disorder still have options to manage their condition. However, the choices are often limited, may take weeks to work or fail to provide full relief. That has led to a search ...
Medical Xpress / How music helps the stressed brain bounce back
You've had a tough day and want nothing more than to flop on the sofa and listen to some soothing music. After a few minutes, you feel peaceful and calm. Anecdotally, music has long been known to relieve stress, but the scientific ...
Tech Xplore / AI digital twins struggle to predict human behavior, creating 'funhouse mirror' distortions
While many fear artificial intelligence will replace humans, using AI to take over some human roles has benefits. Companies can use the technology to conduct surveys and polls, while behavioral scientists can run experiments ...
Phys.org / Critically endangered pygmy raccoons observed making their own paper toys
Some of the most intriguing scientific breakthroughs happen when researchers aren't explicitly looking for them. Take, for example, the pygmy raccoon (Procyon pygmaeus), a critically endangered species that lives only on ...
Phys.org / Why doesn't Venus have a moon? A new study may have the answer
Venus is one of the solar system's most unusual planets. It may sometimes be called "Earth's twin" because of its similar size and density, but it rotates on its axis in the opposite direction of most planets, has surface ...
Phys.org / Away from grand temples, a recycled Bronze Age burial mound became the focus of a Roman religious complex
The Romans were master engineers, building sprawling road networks, towering aqueducts and arenas across their empire. They were also good at recycling. New research has revealed that they turned the remains of a 4,000-year-old ...
Medical Xpress / Scientists discover how fructose may help drive obesity
High-fructose corn syrup is just one of many food additives linked to obesity. It is typically found in sweetened beverages and processed foods and is added to enhance flavor and sweetness. However, exactly how it contributes ...
