Summary: A global study of vertebrates reveals that body temperature is the key driver behind brain size evolution.

When Peter Benchley set out to write his novel of a beachfront town under attack from a killer shark, there was only one living species that really fit the bill. There’s something about a great white ...

Vertebrates have extremely different brain sizes: even with the same body size, brain size can vary a hundredfold. As a rule, ...

DALLASDALLAS — 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 ...

Warm-bloodedness may have first arisen in dinosaurs some 180 million years ago. Dinosaurs were once thought to have been cold-blooded like their modern-day reptilian cousins. Recent findings suggest ...

Were dinosaurs warm-blooded like birds and mammals or cold-blooded like reptiles? It’s one of paleontology’s oldest questions, and gleaning the answer matters because it illuminates how the ...

This illustration provided by the University of Vigo and University College London, depicts a dromaeosaur incubating its eggs as snow falls. The raptor, along with other select dinosaurs, may have ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DALLAS (AP) — Scientists once thought of ...