Can Eggshells Crack the Case of Whether Dinosaurs Ran Hot or Cold?

Some like it hot, some like it cold. Which did the dinosaurs prefer? New study aims to find out if dinosaurs ran hot or cold blooded by analyzing their eggshells.


One of the hottest debates surrounding the dinosaurs is temperature: Were these “terrible lizards” who stalked, tromped and flew around the ancient world​ warm or cold blooded? A new study of dinosaur eggshells​ supports a third option—both.