Poems and Thoughts    by Frank Maurer

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The Morphology and Selection of Hair Types. I lived and taught in Lesotho, Africa, for five years. Of course I was surrounded by Africans all the time. My thoughts often strayed as to why we humans Were different in some ways. Hair was an outstanding varying feature. Tightly coiled, Afro-textured hair has been studied And revealed to be a crucial evolutionary adaptation. The coiled hair morphology helped early equatorial humans Stay cool and protect their brains from intense solar radiation. The primary adaptive benefit of tightly coiled hair Is its role in thermoregulation and water conservation. This structure acts as a natural sun shield, Blocking direct sun from the scalp More effectively than straight hair. The air gaps among the curls create a layer near the scalp Of cooler, dry air, which provides the needed insulation. The human brain is sensitive to heat and also generates its own, Thus this hair structure is a passive mechanism, Helping to keep the brain from trapping heat. Some hypotheses suggest that this type of hair mass May have provided some protection during conflicts Or from predators. This adaptation allowed for larger brain development. As humans migrated out of Africa into cooler climates, This allowed for the selection of other hair textures, Due to random variation Such as wavy or straight hair which became More common in the north. Frank Maurer 25 February 2026 1715 Hours.