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Ask a chatbot the same question enough different ways, and the biggest AI models start doing something strange: they hand back less variety, not more. A new study covering 27 popular AI systems and 70 ...

Voices of people with dementia may sound older than they are, at least to a computer. In a study of nearly 3,000 Spanish speakers, software guessed each person’s age from speech alone, and the guesses ...

Stroke, not mouth cancer, turns out to be the single biggest health consequence of chewing tobacco, according to a massive new global study that tracked the habit across 204 countries. Researchers ...

Spotting just one brown recluse in the house might lead you to start thinking about moving. The Barger family of Lenexa, Kansas, found more than 2,000 of them in six months, and kept living there.

A collapsed fruit fly colony in a New Jersey lab has led researchers to a smell that sends one of fruit farming’s most destructive pests packing. Two scent compounds tied to a yeast found during the ...

Billions of years ago, rain may have fallen on Mars carrying the raw material for sugar. A new computer simulation maps where that rain came down hardest. The landing sites of NASA’s Curiosity and ...

Night owls exit the workforce early about 70% more often than early risers. In a Finnish study of more than 5,600 people followed from age 46 to 57, night owls were granted disability pensions at that ...