I was wondering about the Mongoloid adaptations to cold weather: the smaller ears and nose compared with, say, the Caucasian group, plus the "slitted" eyes and the protective aspects of the epicanthic fold.
If the large nose of the Neanderthal is, IIRC, to help warm incoming air. This seems contrary, unless the windchill factor was more important in the colder parts of Asia than Europe (keep forgetting just how cold it gets in Japan and N. Korea, let alone Mongolia itself and high in the Asian mountains.)
Caucasians seem to fall between Negroid and Mongolian in some respects of head morphology, especially the nose?
Whatever works will survive! Could be more than one solution to a problem.