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science/health

Light-Powered Microbots Target Bacteria with Precision

A team of researchers has developed microscopic robots capable of hunting down and collecting bacteria from liquid environments. These light-powered devices can navigate rapidly through fluids, grab bacteria, and deposit them at designated locations—functioning essentially as microscopic cleaners or collectors. The technology leverages light as an energy source, eliminating

RAND Proposes Defense-in-Depth Framework for AI-Era Biosecurity Risks

The RAND Corporation has released a research report examining how organizations and governments should approach biosecurity in the age of artificial intelligence. The study advocates for a "defense-in-depth" strategy—a concept borrowed from cybersecurity—where multiple independent layers of protection are established rather than relying on a single

FDA Charts New Regulatory Path for AI-Enabled Medical Devices

The U.S. Food and Drug Administration is actively working on regulatory approaches for AI-enabled medical devices that can perform assessments traditionally done by physicians. This effort comes as AI-powered diagnostic and monitoring tools become increasingly sophisticated and prevalent in healthcare settings. The agency is exploring how to evaluate these

AI and Biosecurity: Navigating the Dual-Use Challenge in Biotechnology

The Convergence of AI and Biology The intersection of artificial intelligence and biotechnology is generating significant concern among security experts and bioscientists alike. As AI tools become more sophisticated at designing proteins, predicting molecular interactions, and optimizing biological systems, questions about their potential misuse for creating bioweapons have moved from

AI Model Predicts Gene Mutations and Biomarkers Across 32 Cancer Types

A new AI model has been developed that can predict gene mutations and biomarkers across 32 different cancer types. This advancement could help clinicians identify specific genetic alterations without relying solely on traditional sequencing methods, potentially speeding up diagnostic workflows and supporting more tailored treatment strategies. The model leverages patterns

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Gut Bacteria Metabolite May Contribute to Alzheimer's Disease Progression

The Gut-Brain Connection Grows Stronger Researchers have identified a specific metabolite produced by gut bacteria that appears to play a role in weakening the brain's protective barrier, a mechanism that may contribute to Alzheimer's disease progression. The study focused on how certain gut bacteria produce metabolites

Why Walking Becomes Harder with Age: The Stability-Efficiency Trade-off

Aging affects nearly every aspect of movement, and walking is no exception. Scientists studying biomechanics have uncovered a key reason why mobility tends to decline over time: the body makes a trade-off between stability and efficiency. The Ankle Stiffening Effect With each step, older adults tend to stiffen the ankle