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1.5 million-year-old bone tools crafted by human ancestors in Tanzania are oldest of their kind
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Archaeologists uncovered a cache of 1.5 million-year-old bone tools. They’re trying to ...
These simple tools were made between 2.7 million and 1.5 million years ago. The hand ax emerged during a shift in early human innovation about 1.7 million years ago in a time called the Acheulean age ...