New study identifies differences between human and AI-generated text

robot typing
Credit: Pixabay/CC0 Public Domain

A team of Carnegie Mellon University researchers set out to see how accurately large language models (LLMs) can match the style of text written by humans. Their findings were recently published in the Proceedings of the National Academy of Sciences.

“We humans, we adapt how we write and how we speak to the situation. Sometimes we’re formal or informal, or there are different styles for different contexts,” said Alex Reinhart, lead author and associate teaching professor in the Department of Statistics & Data Science.

“What we learned is that LLMs, like ChatGPT and Llama, write a certain way, and they don’t necessarily adapt to the writing style...

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Geysers on Saturn’s icy moon Enceladus may form from a ‘mushy zone’

Geysers on Saturn's icy moon Enceladus may form from a 'mushy zone'
Saturn’s moon Enceladus captured by the Cassini spacecraft’s orbit in 2008. Credit: NASA/JPL/Space Science Institute.

Searching for life on other celestial bodies, or at the very least the necessary components to support it, has been fascinating scientists and enthusiasts for centuries. While planets are the obvious choice, their moons can also harbor the chemical ingredients for life.

Saturn is orbited by 146 moons, with Enceladus being the sixth largest at approximately 500km in diameter. This small, icy moon is characterized by its highly reflective white surface and geyser-like jets releasing ice and water vapor hundreds of kilometers into space from its south pole.

NASA’s Cassini spacecraft identified these jets in 2005, before going on to sample them in 2008, 2009 and 2015...

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New study identifies unique white matter astrocytes with regenerative potential

New study identifies unique white matter astrocytes with regenerative potential
Characterization of proliferative white matter astrocytes. Credit: Nature Neuroscience (2025). DOI: 10.1038/s41593-025-01878-6

A research team has identified different subtypes of white matter (WM) astrocytes, including a unique type with the ability to multiply and potentially aid in brain repair. Using single-cell RNA sequencing and spatial transcriptomics, the scientists mapped astrocyte diversity across different brain regions and species, providing the first detailed molecular profile of WM astrocytes.

The team was led by Dr. Judith Fischer-Sternjak from Helmholtz Munich and Ludwig-Maximilians-Universität (LMU) München, alongside Prof. Magdalena Götz from Helmholtz Munich, LMU and the Munich Cluster for Systems Neurology (SyNergy)...

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Scientists reveal key to affordable, room-temperature quantum light

Synthesized quantum dots suspended in solvents under laser irradiation.
Synthesized quantum dots suspended in solvents under laser irradiation. Photo by Jonathan Kyncl.

Quantum light sources are fickle. They can flicker like stars in the night sky and can fade out like a dying flashlight. However, newly published research from the University of Oklahoma proves that adding a covering to one of these light sources, called a colloidal quantum dot, can cause them to shine without faltering, opening the door to new, affordable quantum possibilities. The findings are available in Nature Communications.

Quantum dots, or QDs, are so small that if you scaled up a single quantum dot to the size of a baseball, a baseball would be the size of the moon...

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