World Topics

Jun 14, 2016

Bird brain? Study shows avian brains packed with neurons

Scientists have long been baffled by the smarts displayed by some birds with tiny brains. But a new explanation may turn the term “bird brain” on its head: Birds have more densely packed neurons in their brains than other animals, contributing to cognitive ability ...

Mammals thrived long before the dinosaurs died: teeth study

Jun 9, 2016

Mammals thrived long before the dinosaurs died: teeth study

The prevailing theory that mammals only flourished after an asteroid strike wiped out the dinosaurs 66 million years ago is doubly wrong, according to a study published Wednesday. Our warm-blooded predecessors thrived and spread over millions of years even as Tyrannosaurus and other flesh-ripping ...