Grunt, hoo, pant, scream: Chimps use complex vocal communica

WASHINGTON (Reuters) - Scientists exploring the evolutionary origin of language have detected a vocal communic...

Related Keywords

Coted Ivoire , France , Washington , United States , French , Ivory Coast , Rosalba Obrien , Institute For Cognitive Science , Communications Biology , Reuters , National Park , West Africa , Cognitive Science , Will Dunham , Rosalbao Brien ,