Perforated shells found at South Africa's Blombos Cave appear to have been strung as beads about 75,000 years ago-making them 30,000 years older than any previously identified personal ornaments.
Critics are drilling holes in the theory, saying there isn’t enough proof the beads were handmade. Humans living in coastal South Africa about 75,000 years ago may have fashioned snail shells into the ...
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