AUSTRALIA

Around the World March 1, 2011

In a rock shelter archaeologists discovered the world's oldest known ground-edge tool, a basalt axe from 35,000 years ago.
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AUSTRALIA: Grinding the edge of a stone tool can make it sharper and last longer. In a rock shelter archaeologists discovered the world's oldest known ground-edge tool, a basalt axe from 35,000 years ago. It predates the next oldest examples by at least a few thousand years and promises new insights into the evolution of human behavior and technological advancement.

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