What if a distant dinosaur-ruled world still shapes how fast we age today? A surprising scientific idea suggests our lifespan may have been limited long before humans even existed. What if humans are not meant to age this fast? One scientist suggests the answer might go back to the time of dinosaurs, when survival pushed mammals to favor speed over longevity. The idea comes from João Pedro de Magalhães, a microbiologist at the ... [2930 chars]