The study questions the long-held belief that northern Africa became arid around 3 million years ago, which coincides with the appearance of the earliest known hominids in the fossil record. A study led by researchers at Brown University found that rainfall patterns across northern Africa stayed mostly consistent between 3.5 and 2.5 million years ago. […]



Summary

A recent Brown University study challenges the established timeline of North African aridification, suggesting it didn’t occur around 3 million years ago as previously thought. This timeline is significant because it coincides with the emergence of early hominids, leading to the hypothesis that climate change drove their evolution. However, the study’s findings indicate that rainfall patterns in northern Africa remained relatively stable between 3.5 and 2.5 million years ago, casting doubt on the direct link between increased aridity and early hominid development in the region. This prompts a re-evaluation of the factors influencing early human evolution.

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