Renowned paleoanthropologist Lee Berger drew sharp criticism for hypothesizing Homo naledi was deliberately placing its dead in a dark, dangerous underground chamber in the Rising Star caves just outside Johannesburg, South Africa."And the reason they didn't believe it was because Homo naledi, with its tiny little brain just bigger than a chimpanzee, couldn't have had fire," Berger told CBS News.The controlled use of fire was supposedly unique to humans, and for nearly 10 years Berger's team found no evidence the species used fire — until Berger lost over 50 pounds so he could squeeze through the narrow corridors himself for the very first time in August.The same day, lead investigator and paleoanthropologist Keneiloe Molopyane was making another remarkable find nearby: "Pieces of bone ... burnt bone," she said, which indicated they were eating there.For Molopyane, a South African woman, it's not just about a groundbreaking discovery."