Tools May Have Been First Money

VANCOUVER, British Columbia — Hand axes, small handheld stone tools used by ancient humans, could have served as the first commodity in the human world thanks to their durability and utility.

The axes may have been traded between human groups and would have served as a social cue to others, Mimi Lam, a researcher from the University of British Columbia, suggested in her talk at the American Association for the Advancement of Science annual meeting here on Feb. 18.

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