http://www.scientificamerican.com/article/debate-erupts-over-strange-new-human-species/

When scientists unveiled the fossil remains of a newly discovered human species from South Africa called Homo naledilast September, the find electrified audiences around the world. It was an astonishing haul: some 1,550 specimens representing at least 15 individuals, recovered over just a few weeks of intensive excavation from the Rising Star Cave system outside Johannesburg. But it was the researchers’ favored explanation for how the remains ended up in the cave, more than the fossils themselves, that captured the public imagination and jolted the paleoanthropology community. They proposed that this read more