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.
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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.
Kontributor teratas
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Professor in Psychology, University of Florida
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Lecturer in Psychology, University of East Anglia
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PhD Candidate in Materials Science, Penn State
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Professor of Materials Science and Engineering, Penn State
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Director, Australian Research Centre for Human Evolution, Griffith University
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Researcher, Institute of Heritage Science, National Research Council (CNR)
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Postdoctoral Researcher, Max Planck Institute of Geoanthropology
