![Popular Science Radio show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/052/small/popular-science-radio.png)
Summary: The discovery of Homo naledi in a supposed mass grave located in South Africa is an exciting discovery! Does this suggest a burial ritual or some other complex behavior? Becca Peixotto says its too early to know, and describes the dangers of climbing into a confined cave.