A new analysis supports the previously overlooked "brain lag" hypothesis—the idea that, in some primate lineages, the evolution of larger body size preceded the evolution of larger brain size—while ...

New research shows how physical changes in the skull affected the mechanics of the way birds move and use their beaks to eat and explore their habitats -- adaptations that helped them evolve into the ...

Space messes with astronauts' brains – and that might be a big challenge for missions beyond the Moon. With four billion or so years of evolution behind us, humans are well suited to life at normal ...

The neurobiologist Erich Jarvis studies the few species capable of speech. He has long hoped to genetically engineer an animal that can make new calls. Why some birds learn to create their own ...