Quote Originally Posted by Vesuvian Sky View Post
yeah, I think what's cited concerning this issue is a study that postulates a Neolithic origin for lite eyes and hair. However there is much debate about this alone and another study came out this year already showing results more compatible with a pre-neolithic occurrence for such traits.
You can ask her and see what she says, but if you remember the titles of the study i can check the bibliography?

Also, another complimentary book on the subject from a cultural/Linguistic side of PIE, but focusing on Iran, Central and South Asian more so then Europe: