The world’s oldest home — nearly 2 million years old — discovered in South African cave

Researchers say they’ve found evidence of a nearly two-million-year-old home in a cave in South Africa’s Kalahari Desert. Archaeologists and paleoanthropologists were able to date sediment using a process called magnetostratigraphy and cosmogenic aging techniques to determine that occupants of that cave used it for shelter, made fire and were involved in tool-making some 1.8 million years ago. Marco Werman talks about the importance of this discovery with Michael Chazan, professor of anthropology at the University of Toronto and co-director of the Wonderwerk Cave Research Project.