A new study finds urban birds consistently fly faster when approached by women than by men, a pattern seen across multiple European countries and several bird species. Researchers say the birds may be picking up subtle human cues that are still unidentified. The findings point to unexpectedly sharp sensing abilities in city wildlife and could reshape how scientists think about human-animal interactions in urban spaces.
A new study suggests the universe may not expand forever. Researchers say dark energy could evolve over time, potentially reversing the force driving space outward. That scenario, known as the Big Crunch, would pull galaxies closer as expansion slows and reverses. Scientists stress this is only a theory and requires further evidence.
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