New Homo Naledi Cave Discoveries Upend What We Know About Being Human

Discoveries from a subterranean cave system in South Africa are prompting paleoanthropologists to rethink what makes us human. New findings reveal a small-brained human relative known as Homo naledi buried its dead and carved symbols on walls inside the system. Both these behaviors were previously associated with our species or the big-brained Neanderthals with which we interbred.

“We’re looking at cultural behavior that is very human in a species that has a brain a third the size of ours,” said John Hawks, a University of Wisconsin-Madison paleoanthropologist and co-author of the research released Monday, which will soon be published in the journal eLife as reviewed preprints. “It is going against the idea that brain size is what made us human.”