For sixty years, paleontologists suspected that Tyrannosaurus rex was something more than a cold-blooded giant — and now, through the patient chemistry of fossilized teeth, they have their answer. Researchers at UCLA have measured the dinosaur's body temperature at 97 degrees Fahrenheit, placing it firmly among the warm-blooded, metabolically active creatures of its age. The finding, drawn from a 66-million-year-old skeleton in Los Angeles, does not merely settle an old debate — it redraws the portrait of one of history's most iconic predators as an enduring, wide-ranging hunter rather than a