Science Friday Science Friday

Telling the tale of human origins, one fossil tooth at a time

Sep 16, 2026 · 25m

Summary

Paleoanthropologist Dr. Johannes Haile-Selassie discusses his journey from history to discovering key hominid fossils like Ardi and Arti. He explains the fieldwork of surveying the East African Rift, where geological erosion exposes ancient sediments, and emphasizes the importance of training one’s eye to spot small fossils. The conversation highlights the shift toward data sharing and community engagement in the field, as well as how modern genetic analysis is revealing "ghost" ancestors and deepening our understanding of human evolution.

Topics discussed

Sponsors and introduction to human origins Guest bio: Dr. Johannes Haile-Selassie From history to paleoanthropology Life in the field: camping and fossil hunting The skill and luck of finding fossils Why the East African Rift is a fossil hotspot Collaboration and data sharing in science Defining what it means to be human Genetics, ghost ancestors, and the missing link Decolonizing paleoanthropology and community engagement Recent genetic discoveries and Denisovans Dr. Haile-Selassie's evolving research dreams Relevance of ancient history to climate and future Closing remarks and call to action
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