A thought ~ Toba killed off the big cats as well as their game making it possible for humans to re-enter the area without much competition or risk of being eaten.
Eventually the big cats returned but the human population was enough to more than match them.
Same idea I have about the Younger Dryas event ~ before the event humans could not readily move permanently into verdant grasslands full of game because of the high population of big cats. After the event, humans owned the place because the cats were gone.
"has published his rebuttal of this theory. In doing so, they have been able to draw on a much greater body of DNA evidence than was available for the earlier article."
Funny how a small typographical error can completely change the meaning of a sentence.