Were dinosaurs warm-blooded or cold-blooded? Yes, say scientists.

Were dinosaurs warm-blooded or cold-blooded? Yes, say scientists. Researchers say that, dinosaurs’ blood was neither hot nor cold, but somewhere in between, a rarity in the modern animal kingdom. Dinosaurs may not have been cold-blooded like modern reptiles or warm-blooded like mammals and birds — instead, they may have dominated the planet for 135 million … Read more

Why are some fish warm-blooded? A speedy advantage may be the key

A great white shark. Image: © ramoncarretero/Stock.adobe.com Lucy Harding of Trinity College Dublin explains how her team tackled the mystery of why some fish are warm-blooded. A version of this article was originally published by The Conversation (CC BY-ND 4.0) For over 50 years now, scientists have known that, despite their reputation, not all fish … Read more