Add Yahoo as a preferred source to see more of our stories on Google. Like mammals, birds are warm-blooded, or endothermic, meaning they internally regulate their own body temperature. Endothermic ...

Were dinosaurs "warm-blooded" like present-day mammals and birds, or "cold-blooded" like present day lizards? The implications of this simple-sounding question go beyond deciding whether or not you'd ...

It’s rare to find someone who hasn’t heard about Megalodon, a massive shark species that inhabited various regions of the world approximately 15-3.6 million years ago. Long-gone now, scientists are ...

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A reanalysis by UC Davis paleontologists challenges the conclusions of a study published last year that assessed metabolic rates of dinosaurs based on traces of biomolecules from fossils. Monitor ...

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From museums to Hollywood films, dinosaurs are portrayed as highly active animals, but how they maintained this lifestyle isn’t clear. For decades, palaeontologists have debated whether the physiology ...

Were dinosaurs endothermic (warm-blooded) like present-day mammals and birds or ectothermic (cold-blooded) like present-day lizards? Reporting in PLoS ONE, Herman Pontzer at Washington University in ...