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Yesterday โ€” 15 April 2025Latest Science News -- ScienceDaily

New study finds surprising way to curb college-aged drinking harms -- without cutting alcohol

14 April 2025 at 20:22
Researchers have developed and tested an intervention called Counter-Attitudinal Advocacy and compared it to to the well-established Personalized Normative Feedback (PNF) to evaluate their effectiveness in decreasing drinks per week, peak blood alcohol concentration and alcohol-related consequences relative to a control group.

Archaeologists compared the size of 50,000 ancient houses to learn about history of inequality, they found that it's not inevitable

14 April 2025 at 20:20
We're living in a period where the gap between rich and poor is dramatic, and it's continuing to widen. But inequality is nothing new. In a new study researchers compared house size distributions from more than 1,000 sites around the world, covering the last 10,000 years. They found that while inequality is widespread throughout human history, it's not inevitable, nor is it expressed to the same degree at every place and time.

New plant molecule encourages plant-fungi symbiosis to improve crops

14 April 2025 at 20:20
Scientists use small peptides to enhance symbiosis between plants and fungi, offering a sustainable alternative to artificial fertilizers. Plant biologists discover new plant molecule, CLE16, as well as a fungal CLE16 mimic, that encourage the beneficial symbiotic relationship between plants and fungi. CLE16 supplementation in crop fields could help reduce harmful chemical fertilizer use by replacing it with sustainable, long-lasting symbiotic plant-fungus relationships for important crops like soy, corn, and wheat.

Scientists identify key enzyme in Alzheimer's disease that links brain inflammation to memory loss

14 April 2025 at 16:48
A research team has identified a previously unknown enzyme, SIRT2, that plays a key role in memory loss associated with Alzheimer's disease (AD). The study provides critical insights into how astrocytes contribute to cognitive decline by producing excessive amounts of the inhibitory neurotransmitter GABA.

Photonic computing needs more nonlinearity: Acoustics can help

14 April 2025 at 16:47
Neural networks are one typical structure on which artificial intelligence can be based. The term neural describes their learning ability, which to some extent mimics the functioning of neurons in our brains. To be able to work, several key ingredients are required: one of them is an activation function which introduces nonlinearity into the structure. A photonic activation function has important advantages for the implementation of optical neural networks based on light propagation. Researchers have now experimentally shown an all-optically controlled activation function based on traveling sound waves. It is suitable for a wide range of optical neural network approaches and allows operation in the so-called synthetic frequency dimension.

New method for detecting nanoplastics in body fluids

14 April 2025 at 16:47
Microplastics and the much smaller nanoplastics enter the human body in various ways, for example through food or the air we breathe. A large proportion is excreted, but a certain amount remains in organs, blood and other body fluids. Scientists have now been able to develop a method for detecting and quantifying nanoplastics in transparent body fluids and determining their chemical composition.

Pioneering research reveals Arctic matter pathways poised for major shifts amidst climate change

14 April 2025 at 16:47
A new study has shed unprecedented light on the highly variable and climate-sensitive routes that substances from Siberian rivers use to travel across the Arctic Ocean. The findings raise fresh concerns about the increasing spread of pollutants and the potential consequences for fragile polar ecosystems as climate change accelerates.

Sleep matters: Duration, timing, quality and more may affect cardiovascular disease risk

14 April 2025 at 16:47
Healthy sleep includes multiple components, such as number of hours of sleep per night, how long it takes to fall asleep, daytime functioning and self-reported sleep satisfaction, and addressing these different dimensions of sleep may help to reduce cardiometabolic health and related risk factors, according to a new scientific statement.
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