Paleontologists have gone back and forth over the years on whether dinosaurs were warm-blooded or cold-blooded. During the late 19 th century, some scholars aptly guessed that dinosaurs were agile ...

Scientists once thought of dinosaurs as sluggish, cold-blooded creatures. Then research suggested that some could control their body temperature, but when and how that shift came about remained a ...

Yet, if that's true, why aren't birds cold-blooded like most modern-day reptiles? The answer is straightforward: Most dinosaurs were probably warm-blooded, too. Birds are descended from a diverse ...