A team of anthropology researchers has found significant differences in facial features between all seven pre-Columbian peoples they evaluated from what is now Peru -- disproving a longstanding perception that these groups were physically homogenous. The finding may lead scholars to revisit any hypotheses about human migration patterns that rested on the idea that there was little skeletal variation in pre-Columbian South America. Skeletal variation is a prominent area of research in New World bioarchaeology, because it can help us understand the origins and migration patterns of various pre-Columbian groups through the Americas... The recently-published findings may affect a lot...