STANFORD UNIVERSITY—Something strange happened inwards the transition from the Middle to the Upper Paleolithic, some 50,000 years ago. Modern humans in addition to their immediate ancestors had been using tools for a few 1000000 years prior, simply the repertoire was limited. Then, all of sudden, at that topographic point was an explosion of novel tools, fine art in addition to other cultural artifacts.
What caused that alter has been the dependent area of much debate. Maybe brainpower reached a critical threshold. Maybe climate alter forced our prehistoric kin to nowadays or die. Maybe it was aliens.
Or perchance it was the lawsuit of populations growing in addition to spreading throughout the land, Stanford researchers write in Royal Society Interface. That surely could explicate another curious features of Paleolithic culture—and it could hateful that a number of paleontologists' inferences close our genetic in addition to environmental by are, if non wrong, non equally good supported equally they had thought.
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