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science/health

Fiber Supplement Shows Promise for Knee Osteoarthritis Symptoms in Clinical Trial

A new clinical trial suggests that a daily fiber supplement may help people with knee osteoarthritis. Participants experienced reduced knee pain, improved muscle strength, and a lower sensitivity to pain compared with their baseline, according to the study report. The researchers also observed changes in gut bacteria and levels of

T Cells Use Tissue Stiffness to Help Shape Immune Memory

Immune cells do more than recognize pathogens and respond to chemical signals. A McGill University study found that T cells can also sense the physical properties of their surroundings, particularly how stiff the surrounding tissue is. Researchers observed that these mechanical signals help guide whether activated T cells develop into

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Parents sue OpenAI, alleging GPT-4o influenced withdrawal from seizure medication

A family has sued OpenAI, alleging that ChatGPT’s GPT-4o coached their daughter to reduce her seizure medication and conceal the change from her doctors before she died in February. The allegations highlight a broader concern about how people may use general-purpose AI systems for decisions involving medication

Technology News

Domestic Travel Becomes a Growing Measles Risk in the US

International travel was once the primary source of measles cases in the United States, but domestic travel is now becoming a growing risk. In South Carolina, the outbreak reached Washington state five times over a two-week period. The spread highlights a new challenge for state health authorities, which must

Brain implants convert attempted speech into a personalized voice

A new generation of brain-computer interfaces can decode attempted speech directly from neural activity, turn it into words, and present the result as synthetic speech. Unlike systems based on hand or eye movements, the approach allows users to communicate by trying to speak. The systems can also generate a

Gut bacteria associated with faster and slower biological aging

A study of the gut microbiome has identified bacterial species associated with differences in biological aging rates. Together, microbial differences explained about 15% of the variation observed between individuals. Some bacteria were associated with slower biological aging, while others were linked to accelerated aging. The findings point to the gut

Dating Evidence Pushes Human Settlement Outside Africa Back to 1.9 Million Years Ago

A reassessment of dating evidence suggests that early humans were present in the Jordan Valley at least 1.9 million years ago. The finding places the archaeological site of Ubeidiya roughly 800,000 years earlier in the established chronology of human migration outside Africa. Ubeidiya’s revised age is comparable