An H.I.V. awareness poster displayed in Suva, Fiji, in April. The nation recorded more than 2,000 new cases in 2025, 16 times as many as in 2019, officials said.
So-called little red dots, astronomical objects that date back about a billion years after the Big Bang, may be precursors to black holes, a new study has found.
The animals may help reveal the causes of brain disease in people and point the way to treatments. But researchers already are calling for new ethical guidelines.
“Recursive self-improvement” is the idea that artificial intelligence could learn to build and train itself, creating exponential new progress — and risk.
Jeff Clune a computer scientist and researcher at the University of British Columbia in Canada and founder of Recursive Superintelligence, one of two $4-billion start-ups chasing recursive self-intelligence.
Kent Hups, a high school science teacher in Colorado, discovered a 23-foot trackway of fossilized dinosaur footprints, which offer a glimpse of how the apex predator moved 66 million years ago.
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