Ancient humans were surprisingly creative, structured, and geometrical in their thinking some 60,000 years ago, according to some intricately engraved ostrich eggshells found across southern Africa. Ancient humans were surprisingly creative, structured, and geometrical in their thinking some 60,000 years ago, according to some intricately engraved ostrich eggshells found across southern Africa. The surviving fragments from these decorated shells... [3494 chars]
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