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Medical Xpress / Serotonin spikes may worsen tinnitus by directly activating the brain's auditory circuit

The same neurotransmitter commonly leveraged to relieve symptoms of depression and anxiety also may exacerbate a vexing condition known as tinnitus, according to new research published in the Proceedings of the National Academy ...

Apr 20, 2026
Tech Xplore / AI can give as good as it gets—or better: The moral dilemma of combative chatbots

AI systems can "learn to seek revenge" because they are able to grasp reciprocating verbal violence when exposed to conflict, new research from Lancaster University shows. In short, AI can give as good as it gets and, eventually, ...

Apr 22, 2026
Phys.org / A hidden property of light could power future nanomachines

Light does more than illuminate the world—it can also push and twist matter. It was back in the 1870s that James Clerk Maxwell first predicted that light carries momentum and can exert pressure on objects. Nearly a century ...

Apr 20, 2026
Phys.org / Crabs' iconic sideways walk evolved from common ancestor, study suggests

Researchers have provided new insights into the evolutionary origin of sideways walking in crabs. Their study, published today as a Reviewed Preprint in eLife, presents the largest comparative dataset on crab locomotion to ...

Apr 21, 2026
Medical Xpress / Large international study confirms similar efficacy and safety of common fluid treatments for pediatric sepsis

A major study, led by researchers at Children's Hospital of Philadelphia, Nemours Children's Health, and Children's National Hospital and involving an extensive network of medical centers across the United States and abroad, ...

Apr 24, 2026
Phys.org / Deep-rooted grass stores significantly more carbon, says new study

Soil biologist Eric Slessarev has some advice for conservationists, landscapers, and farmers with fallow fields: Go touch deep-rooted grass. Or better yet, go plant some. Slessarev, an assistant professor of ecology and evolutionary ...

Apr 21, 2026
Phys.org / Hubble dazzles with young stars in Trifid Nebula

This shimmering region of star-formation, a close-up of the Trifid Nebula about 5,000 light-years from Earth, was captured in intricate detail by NASA's Hubble Space Telescope. The colors in Hubble's visible light image, ...

Apr 20, 2026
Phys.org / Astronomers precisely date rare brown dwarf companion, offering new test for how these objects cool

Astronomers at the University of Hawaiʻi have precisely measured the age of a nearby sun-like star and its unusual companion, known as a brown dwarf, an object that falls between a planet and a star. The discovery offers ...

Apr 21, 2026
Phys.org / Cambrian microfossils reveal earliest known ringed worms from 535 million years ago

Scientists have uncovered the earliest fossil evidence of annelids (ringed worms) in Cambrian microfossils dating back approximately 535 million years ago. This discovery offers fresh insights into the origin and early evolution ...

Apr 20, 2026
Phys.org / Why ultrashort laser pulses could make low-power electron sources far more practical

A new theoretical study finds shorter laser pulses achieve higher quantum efficiency for photoemission from a solid surface without increasing power or intensity. Using light to knock electrons loose from a surface—known ...

Apr 20, 2026
Phys.org / Australia's truffle industry may owe part of its success to a surprising underground secret

Imagine ordering a truffle dish in a fancy restaurant, and you might picture pricey gourmet mushrooms from France or Italy. But recent decades have seen an upstart on the truffle scene. Today, one of the world's largest producers ...

Apr 20, 2026
Medical Xpress / Tourette's tics are not just motor misfires—an emotion-linked brain circuit may open a new treatment frontier

While tics have been considered to result from an aberrant function of the brain's motor cortex, a Kobe University mouse study has now discovered a connection to the brain's emotional functions. The result promises a new ...

Apr 22, 2026