(POPULAR SCIENCE) December 25, 2018 — The story of how modern humans came to be is still complicated and murky, but there’s one thing that’s become very clear over the last decade of research: humans loved to get down, even with other species—that’s why nearly everyone whose ancestors migrated out of Africa possesses at least some lingering bits of Neanderthal DNA.

Source: https://www.popsci.com/human-neanderthal-sex