Sociologists are treading more boldly on ground that once was the sacred domain of Christianity. In recent years sociologists have tried to explain why certain universals exist among human beings. They are puzzled, for example, by the fact that a smile or a look of grief looks the same in every culture in the world.

REF.: Rensberger, Boyce. 1983. On becoming human. Science 83, April. p. 38. Photo: Children of the World by Alexas Foto_Pixabay.com