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Medical Xpress / Women who hit menopause early see faster brain aging and earlier Alzheimer's diagnosis
Menopause is more than just the end of a woman's reproductive years. It brings a cascade of hormonal changes that can affect overall well-being, giving rise to a range of physical and emotional symptoms. A recent study published ...
Phys.org / The 'costly son' hypothesis: Why bigger sons may make births riskier across species
A new comparative review, published in The Anatomical Record, examines factors that may lead to birth complications among humans and other mammals. The study suggests that fetal sex may play an important role in risky births ...
Phys.org / Water isotopes reveal early drought signals in Central Amazon rainfall
The historic droughts of 2023 and 2024 in the Amazon reduced river flows and altered the region's rainfall composition. Daily monitoring in Manaus, the capital of the Brazilian state of Amazonas, revealed these changes through ...
Phys.org / Ultrathin silicon structures can tune mid-IR light in billionths of a second
Light in the mid-infrared (mid-IR) portion of the electromagnetic spectrum plays a key role in modern sensing. Because molecules interact with this kind of light in specific ways, researchers use technologies like mid-IR ...
Phys.org / A cellular threshold can determine whether herpesvirus becomes active or lies dormant
During the COVID-19 pandemic, we wore masks and kept 2 meters (6.6 feet) apart in an effort to reduce the spread of the tiny droplets we release into the air with every breath, conversation or cough. The main goal was to ...
Phys.org / A fake spider at the tip of this snake's tail helps it lure birds: Scientists get their first look inside it
Lots of animals use mimicry to survive. Some copy the appearance of threatening predators, and others have evolved to resemble plants or rocks so they can blend into the background and avoid being attacked. But a viper from ...
Tech Xplore / Brain-inspired computing: Using noise to regulate information flow in neural networks
Researchers have developed a learning mechanism that uses the natural variability of neural activity—often dismissed as random "noise"—to understand how synapses buried deep inside brain networks—or brain-inspired devices—can ...
Phys.org / How sex with multiple mates can help save species from extinction
Allowing females to mate with multiple males, rather than just one, could help make species more resistant to extinction, University of East Anglia research shows. A new study reveals that when females have multiple males ...
Phys.org / 'Peculiar' new species of Jurassic squid found in Wyoming
A "peculiar" new species of Jurassic squid-like animal has been unearthed in Wyoming, U.S., following the discovery of two exceptionally rare fossils dating to around 160 million years ago.
Medical Xpress / How the brain keeps its options straight at decision time
A new study by neuroscientists at MIT's Picower Institute for Learning and Memory shows how the brain encodes information throughout the decision-making process to keep options clearly in mind and ensure that chosen and unchosen ...
Phys.org / Chinese cave traces Denisovan hunting and adaptation across 120,000 years
An ancient cave in southwestern China has revealed new evidence about how Denisovans—an ancient human relative—lived, survived and adapted over more than 100,000 years.
Medical Xpress / Novel immunotherapy leads to complete regression of chemotherapy-resistant liver cancer in 3-year-old
A new report in the New England Journal of Medicine by researchers at Baylor College of Medicine, Texas Children's Hospital and Seattle Children's describes a complete regression of hepatoblastoma, the most common pediatric ...
