Earliest Human Engraving or Trash From an Ancient Lunch?

Scientists have discovered enigmatic markings on an ancient shell that's been sitting in a museum for more a century — and they believe this may be the oldest known example of a deliberate geometric engraving made by a human hand.

The carved zigzag marks, described in this week's issue of the ...Read More

Source: NPR Science - ingested into KQED

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