Recycled flint tools from Qesem Cave, Israel Ran Barkai

Humans Have Been Recycling for Half a Million Years, Israeli Archaeologists Show

Before our species even evolved, archaic hominins were reusing flint tools left behind by even earlier hominins, and then the trail went cold — until archaeologists found recycled flints from the Neolithic and Bronze Age in Israel

Almost half a million years ago, archaic humans picked up conveniently shaped flints that required only a few more whacks to shape into a perfect tool. The convenient shape was not coincidence: They were...

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