Kristina Killgrove is an archaeologist with specialties in ancient human skeletons and science communication. Her academic research has appeared in numerous scientific journals, while her news stories and essays have been published in venues such as Forbes, Mental Floss and Smithsonian.
After waves of Homo sapiens left Africa, they left few traces of their whereabouts until they reappeared in Eurasia 20,000 years later. So where did they go in the intervening time? A study proposes that Homo sapiens outside of Africa made their home on the Persian plateau during that mysterious period.
The researchers previously looked at information from paleolithic Eurasian genomes and correlated these data with archaeological evidence for changes in stone tool technology. From this, they found that modern humans likely congregated in a population hub that served as the base for multiple migrations throughout Eurasia. But inferring the homeland of the population hub required the addition of a paleoclimate model, which is included in the new study.
During this key period of human evolution and expansion, Homo sapiens were hunter-gatherers, Vallini explained. But within this area, people likely traded key information. The hub"might have served as an incubator for the development of cultural innovations" such as rock art and projectile weapons, the researchers wrote in the study.
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