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Social robots that promise companionship and stimulation for older people and those with dementia are attracting investment, but some question their benefits.
Unusual microbial communities in a person’s lower airways could influence the onset and progression of lung cancer and other conditions, and might point the way to therapies.
Researchers are cautiously optimistic that the neglected tropical disease could be gone by 2030, but new barriers — including antibiotic resistance and primate reservoirs — might stand in the way.