This article focus on Euthenics, which is a science concerned with bettering the condition of human beings through the improvement of their environment. Affecting the “improvement” through altering external factors such as education and the controllable environment, including the prevention and removal of contagious disease and parasites, environmentalism, education regarding employment, home economics, sanitation, and housing. Euthenics is the term proposed for the preliminary science on which Eugenics must be based.