@CNN: Neanderthals, Denisovans and our ancestors were mixing and mingling a long time ago — and some of our genetics can be traced back to these archaic humans https://t.co/2zddGNMGZF

@CNN: Neanderthals, Denisovans and our ancestors were mixing and mingling a long time ago — and some of our genetics can be traced back to these archaic humans https://t.co/2zddGNMGZF