In science, we look at the evidence and try to find the theory that best explains it. And that's what happened when it came to figuring out evolution.
Meet the brawny bug with a concoction so caustic it'll make a toad vomit.
The big question being asked is: where does Homo naledi fit in the evolutionary tree? Assessing the similarity or dissimilarity between fossil skulls has provided a possible clue to the answer.
Despite claims about its age, puzzling combinations of features from Homo naledi gives it an uncanny resemblance to human beings.