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146,000-Year-Old Bone Crystals Rewrite the Origins of Human Innovation

146,000-Year-Old Bone Crystals Rewrite the Origins of Human Innovation

Calcite crystals found inside a butchered animal rib have pushed the timeline of the Lingjing archaeological site back by 20,000 years. The discovery proves early humans engineered complex stone tools to survive a brutal ice age, not a period of climate abundance....

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