Harvesting of wild grains may have begun more than 100,000 years ago.
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Mercader, J. Science 326, 1680-1683 (2009).
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Borrell, B. Stone Age sorghum found in African cave. Nature (2009). https://doi.org/10.1038/news.2009.1147
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DOI: https://doi.org/10.1038/news.2009.1147