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Inuit meat cache, Kazan River (source: Library and Archives Canada / PA-101294). Because of their high meat diet, hunters produce more body heat than farmers do. Natural selection has thus favored certain mtDNA sequences over others in humans with this profile of heat production. A change in selection pressure may therefore explain, at least in... Read More
The skin color is about right. Not so sure about the eyes (source: Spanish National Research Council (CSIC)). There seems to have been a succession of changes to hair, eye, and skin color within a relatively restricted area of Europe. These changes then spread outward, the changes to eye color being apparently the earliest. Ancient... Read More
Venus of Willendorf (30,000 – 27,000 BP). Is that a special headdress … or peppercorn hair? (source: Matthias Kabel) Europeans already had blue eyes while still hunter-gatherers. This is what we’ve learned after retrieving ancient DNA from two Mesolithic individuals, one from Luxembourg, dated to 8,000 years ago, and another from Spain, dated to 7,000... Read More
Reconstructed Mesolithic roundhouse near Northumberland, Great Britain (source: Andrew Curtis) At different times and in different regions, humans have entered larger social environments that are no longer limited to close kin. Because there is less interaction with any one person and more interaction with non-kin, correct behavior can no longer be enforced by the to... Read More