A study published in PNAS reveals that in addition to Neanderthals and Denisovans, modern humans also interbred with two previously unknown hominin species, named EH1 and EH2. EH1 was genetically equally distant from Neanderthals and Denisovans, and traces of its DNA (2.6-3.4%) are present in the genomes of Aborigines, Andaman Islanders and East Asians, suggesting introgression in India. EH2 probably interbred with humans on the island of Flores, although the evidence is less clear. All in all, modern humans have a complex genetic heritage resulting from multiple episodes of interbreeding with archaic hominins during migrations from Africa to Asia and Oceania.