🔄FROM THE ARCHIVE As ancient remains are uncovered and dated, archeologists expand their search for the evolutionary birthplace of Homo sapiens, and debate whether such a place exists.
back to a region south of the Zambezi River in northern Botswana, once a luscious, green area bordering enormous lakes. The study finally answered one of the eternal questions — Where do we come from? — and made headlines around the world.
“Because it's inherited only maternally, it always coalesces to a single place,” says Bence Viola, a paleoanthropologist at the University of Toronto. “You will always get a single place in mitochondrial DNA, even if there's no such thing in reality.”Recent studies have cast doubt on the very premise that modern humans have a single origin.
“There was no single group ... there were all different groups in different areas,” Viola says. “There were likely more populations in the south of Africa, in the east of Africa, and probably also in the west of Africa. But we don't have any fossils from there, because the climate is just not good for preserving fossils. ”she was half Neanderthal and half Denisovan — another archaic human species believed to have gone extinct around 40,000 years ago.
The ubiquity of these human-made items was either a coincidence caused by independent development in different groups that led to the same result, or they were spread from one group to another. The latter is Hubin’s preferred conclusion.Hard evidence connecting the Morocco specimens to those in Ethiopia has not been found. But “absence of evidence is not evidence of absence,” Hubin says. To find the missing link, researchers must change their approach.
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