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Blake Edgar is co-author of From Lucy to Language and other books and a contributing editor at Archaeology Magazine. He is a senior acquisitions editor at the University of California Press.

More by Blake Edgar
大众科学 Magazine Vol 290 Issue 2This article was originally published with the title “Good with Their Feet” in 大众科学 Magazine Vol. 290 No. 2 ()
doi:10.1038/scientificamerican022004-1gArfEOCmVcGDnkJkMps6V
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