Paul Arnold

Sounds have shapes. That might sound strange since sound waves are invisible, but a famous psychological experiment in the 1920s showed that our brains naturally link spoken sounds to visual forms. According to new research ...

When drugmakers want to improve on compounds they have already created, they can replace a carbon atom with a nitrogen atom. While effective, the techniques they use to perform this chemical swap, known as skeletal editing, ...

It's no secret that an ever-increasing number of scientists use AI to help with their papers. While tasks such as polishing text are generally permissible if declared, using the technology to write papers, or parts of papers, ...

The fate of our solar system is written in the stars—well, one star to be precise: the sun. Estimates of what the end will look like once the sun sheds much of its mass and ultimately dies vary widely. New research published ...

Whether you're a quick or slow thinker depends on several factors, such as the efficiency of the brain's wiring and the amount of gray matter in specific control centers. But there may be another, rather surprising influence, ...

In general, people who eat a healthy diet give themselves a significantly better chance of avoiding some major diseases than those who don't. The Nordic diet, also known as a northern version of the Mediterranean diet, is ...

Fragmented bones and skull pieces found in hearths, beneath floors and in other domestic settings in early Scandinavian settlement sites are providing fresh insights into Iron Age and Viking Age violence.

There is even more evidence that Neanderthals were far from the simple cave dwellers we once thought them to be. The discovery of a clublike artifact and other wooden tools from an archaeological site near Barcelona, Spain, ...

What may have looked like a cross between a platypus and a beaverlike rodent and lived around 120 million years ago? Dongoconodon platycauda, a newly discovered fossil mammal from northeastern China. Beyond its unusual features, ...

Some of the best engineers and inventors are copycats. They look at how the natural world solves complex problems and use those mechanisms as the basis for innovations. But Mother Nature doesn't always give up her secrets ...

Our oceans are becoming more acidic, which could have major consequences for marine life. Of particular concern is what this could mean for phytoplankton, the microscopic photosynthetic organisms that form the basis of marine ...

Thousands of meters below the waves off Australia's east coast, far beyond where sunlight can reach, a stunning light show takes place in the dark. The cause? Two species of long-legged creatures emitting a blue glow.

Favorite songs can stay with us for a lifetime, but their shelf life on the music charts is fleetingly short. Tracks that shoot up the U.S. Billboard charts may flood the airwaves for a short while, but just a few weeks later, ...

One of the unresolved mysteries about the history of the Americas is when the first people arrived. Despite extensive debate centering on genetic, archaeological and environmental evidence, there is still no consensus or ...

Primordial black holes (PBHs) don't exist as far as we know. But if they did, these hypothetical objects would have formed in the early universe rather than from dying stars, and they may even make up dark matter. That's ...