Daphne Gallagher, University of Oregon (IMAGE)
Caption
Daphne Gallagher, an anthropologist at the University of Oregon, has pushed back the history of harvesting shea tree nuts by local populations in West Africa to A.D. 100. Her research in Burkina Faso focused on layers of households that had been built atop one another from some 1,600 years.
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Photo by Charlie Litchfield
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