As to the influence of climate on head form.
In two quite different geographical regions--Moçambique and Hierro (an island of the Canaries)--observations have been made which point to an influence of climatic conditions on head dimensions: In localities of higher altitude or/and with colder climate maximum head breadth, minimum frontal breadth and auricular height proved to show higher dimensions compared with localities of milder (more hot) climate.
D000810:Angola; D001827:Body Height; D002508:Cephalometry; D002980:Climate; D005006:Ethnicity; D005145:Face / Q000033:anatomy & histology; D005260:Female; D006257:Head / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D009073:Mozambique