IT IS sobering to think that if the Neanderthals had continued for 2000 more generations, they would still be sharing the planet with us today. Our other close relatives, the mysterious Denisovans, came even closer to surviving to modern times, and would have needed just 750 more generations of their lineage.
Instead, we Homo sapiens find ourselves alone, the sole survivors out of the seven or more types of human that we once shared a planet with. It is easy to assume that we killed the others off, but the most likely explanation for their demise is that dramatic …
Source: Humans - newscientist.com