The soil of the Ledi-Geraru valley, in the Afar region of Ethiopia, is a mosaic of ochre and grey tones, covered by dry channels and sprinkled with basalt fragments. When the wind combs the sand, it sometimes exposes what a trained eye immediately identifies: tiny tooth enamel chips that have remained buried for almost three million years. It was so, combing the sediment with the patience of a watchmaker, as the members of the Ledi-Geraru Resear…
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The soil of the Ledi-Geraru valley, in the Afar region of Ethiopia, is a mosaic of ochre and grey tones, covered by dry channels and sprinkled with basalt fragments. When the wind combs the sand, it sometimes exposes what a trained eye immediately identifies: tiny tooth enamel chips that have remained buried for almost three million years. It was so, combing the sediment with the patience of a watchmaker, as the members of the Ledi-Geraru Resear…