After 26 years, the US has lost its measles elimination status
The US has lost its measles elimination status after 26 years. The available information does not explain why. (cnn.com)
A study from the University of São Paulo tested whether cats meow to communicate a problem to people, rather than merely vocalizing out of frustration. Researchers observed 38 pet cats that their owners described as especially vocal around food. Each cat was presented with a treat inside a perforated plastic box it could smell but could not open, first with a person present and attentive, then without a person in the room. The cats produced 86 meows when a human was present, compared with 20 when alone; statistical analysis found the odds of meowing were more than 16 times higher in the person’s presence.
The cats often looked toward the human while meowing, sometimes shifting their gaze between the person and the box, as if directing attention to the obstacle. When alone, they spent more time standing still and watching the door. These differences suggest that cats adjust their behavior to the audience and that meowing can function as a targeted signal intended to prompt human help. The findings do not prove cats consciously understand that people can solve the problem, or that every meow is a deliberate request. The study was small and selected cats already known to be food-focused vocalizers, so its results may not generalize to quieter cats. Further research could examine whether cats use distinct meows for different needs.
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The US has lost its measles elimination status after 26 years. The available information does not explain why. (cnn.com)
SpaceX plans to shift from Falcon 9 to Starship, but Falcon 9 currently launches the only U.S. spacecraft carrying NASA astronauts to the International Space Station. With NASA contracted for only three more Dragon flights, the agency may need new crew-transport options before the station retires in 2030. (text.npr.org)
Metal-eating bacteria and corrosion are weakening the Titanic’s wreck, with parts of the ship already collapsing on the deep-sea floor. Its remains will gradually disintegrate, though the process is expected to take decades or longer. (bbc.com)
Women lost more weight than men while taking GLP-1 drugs, according to a meta-analysis of six trials involving nearly 20,000 participants. Results were similar across age, race, BMI, and blood-sugar groups, while hormones and body composition may help explain the sex difference. (medpagetoday.com)
A 12-year study of more than 440 female Asian elephants in Sri Lanka found that population losses have made their social networks smaller and more isolated. Researchers warn that crossing a social tipping point could threaten the animals’ future. (today.ucsd.edu)
Quantum computing uses quantum bits, or qubits, to process information in ways that differ from classical computers. Its software relies on quantum algorithms and is designed for specialized problems rather than replacing everyday computing. (makingsoftware.com)
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