
Insights into Human Migration: Modern Genome Data Reveals Multiple Groups in Africa and a 30,000 Year Arabian Standstill.
A new study using genome data from modern-day African populations suggests that many ancestral groups moved across geographic areas and mixed with each other over hundreds of thousands of years. It also found that everyone alive today can connect their ancestry to at least two different populations that were present in Africa about a million years. These results differ from an earlier explanation about our species. That idea suggested Homo sapiens developed in only a single area or mixed with a related species.

