Animal hybrids may hold clues to Neandertal-human interbreeding

Physical changes in the bodies of other species could give insights into hominid history

illustration of two skulls

THE HYBRID FACTOR  To understand signs of interbreeding among humans, Neandertals and other ancient hominids, scientists are studying physical changes in the bodies of various animal hybrids. 

James Carey

Neandertals are the comeback kids of human evolution.