HumansAncient lead exposure may have influenced how our brains evolved Lead poisoning isn't just a modern phenomenon: fossil teeth show signs that it affected ancient hominids, and Homo sapiens may have coped better than our close relatives News
HumansWhy a mysterious group of ancient humans doesn’t have a species name An extinct group of humans that were once widespread in Asia don’t have an official species name – part of the reason is archaeological, and part is a legal question News