Deep in the Rising Star Cave system lies a mystery of paleoanthropology: a chamber filled with the bones of Homo naledi. How this species evolved, how it’s related to us and other human relatives, and how it got so deep in the caves are among the many open questions researchers are trying to answer, and what they’re starting to uncover might mean changing our minds about what behaviors we think of as uniquely human.

Eons: Mysteries of Deep Time is produced by Complexly for PBS.

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