March 17, 2010
Chip Clark / Smithsonian Institution
Handaxes -- multipurpose tools used to chop wood, butcher animals, and make other tools -- dominated early human technology for more than a million years. Left to right: Africa (1.6 million years old), Asia (1.1 million years old), and Europe (250,000 years old).
Photo Credit: Chip Clark, Smithsonian Institution
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