A scientist holds a replica of the skull of a newly discovered ancient species, named "Homo naledi", during its unveiling outside Johannesburg September 10 2015. At least 15 skeletons of the species - named Homo Naledi - were found hidden deep in a cave dubbed the 'Star Chamber' in which is thought to be the earliest form of ritual burial ever discovered. The early humans stood just five foot tall and weighed 100 pounds. Their hips were similar to our earliest ancestor, the hominid Lucy, but their shoulders were well designed for climbing but legs and feet were human like. Their skulls are like early humans, but their brains are tiny, just the size of an orange. (Photo/Agencies)
