A close look at 7,000-year-old grinding stones left in ancient firepits shows wandering herders in northern Saudi Arabia carried heavy tools for working on bones, plants and rocks.
Academic rigor, journalistic flair
Articles on Tools
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Two glass researchers explain how glass is made, the unique properties of glass and how those properties have allowed it to be a useful material to humans for thousands of years.
We studied people’s brains while they held tools correctly and incorrectly.
With caregivers’ faces covered, infants and young children will miss out on all the visual cues they’d normally get during stages of rapid developmental growth.
Top contributors
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Lecturer in Psychology, University of East Anglia
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Professor of Materials Science and Engineering, Penn State
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Professor in Psychology, University of Florida
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Senior Researcher, Institute of Heritage Science, National Research Council (CNR)
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Director, Australian Research Centre for Human Evolution, Griffith University
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Postdoctoral Researcher, Max Planck Institute of Geoanthropology
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PhD Candidate in Materials Science, Penn State
